Set shellflags to a reasonable default if it's not set already.

[make.git] / ChangeLog.1

Tue Oct 29 20:57:36 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.62.

        * remake.c (update_file_1): Check for deps still running before
        giving up if any dep has failed.

Sat Oct 26 16:20:00 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * make.h [uts]: #undef S_ISREG and S_ISDIR if defined.

Fri Oct 25 19:50:39 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.17.

Thu Oct 24 16:58:36 1991  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)

        * job.c (start_job): Don't check for empty cmds before tweaking the
        command_ptr.  Just let construct_command_argv do it.

Tue Oct 22 20:21:03 1991  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)

        * remake.c, arscan.c [POSIX]: <fcntl.h> instead of <sys/file.h>.

        * make.h [POSIX]: Declare vfork as pid_t.

Mon Oct 21 15:37:30 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.16.

        * job.c (construct_command_argv, construct_command_argv_internal):
        Take new 2nd arg RESTP.  If non-NULL, stop parsing at newline, and
        store addr of the NL in *RESTP.
        (start_job): Don't chop expanded cmd lines up; use above code to do it.
        * function.c (expand_function: `shell'): Pass RESTP==NULL.

Sat Oct 19 15:36:34 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.15.

Fri Oct 18 15:26:55 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * job.c (start_job): If on the same cmds->command_lines elt, look
        at cmds->lines_recurse[CHILD->command_line - 1] instead of
        [CHILD->command_line].

        * dir.c [sgi]: <sys/dir.h>, not ndir or anything else.

Thu Oct 17 16:28:55 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * file.c (print_file_data_base): Remove unused var.

        * make.h [NeXT]: No #define ANSI_STRING.

Tue Oct 15 20:08:41 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * Version 3.60.14.

Fri Oct 11 16:23:52 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * make.h: Use PATH_MAX for getwd defn.

        * make.h: Move getcwd/getwd outside of #ifndef POSIX, and make it
        #if USG||POSIX.

Thu Oct 10 11:53:31 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * Version 3.60.13.

        * read.c (read_all_makefiles): When processing MAKEFILES, save the
        malloc'd ptr to be freed, instead of freeing part-way thru it.

        * remake.c (update_file_1): Don't tweak FILE->also_make.
        (update_file): Do it here.  After calling update_file_1, set the
        command_state, update_status, and updated members of each also_make
        elt to FILE's values.

Tue Oct  8 14:56:04 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * Version 3.60.12.

        * remake.c (notice_finished_file): Set command_state of FILE and
        its also_make chain to cs_finished here.
        * commands.c (execute_file_commands), job.c (child_handler),
        remake.c (remake_file): Don't set it before calling
        notice_finished_file.

        * file.h (struct file): Changed `also_make' to struct dep *.
        * job.c (delete_child_targets), file.c (print_file_data_base),
        remake.c (notice_finished_file), implicit.c (pattern_search):
        Use dep chain instead of array of file names.

Mon Oct  7 17:04:33 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * Version 3.60.11.

        * arscan.c: Declare open.
        * misc.c: Declare {get,set}{re,}[ug]id.
        * variable.c (target_environment): Declare getenv.

Sat Oct  5 15:13:03 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * make.h [NeXT]: <string.h> instead of <strings.h>.

Fri Oct  4 16:05:41 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * default.c (default_suffixes, defualt_suffix_rules): Add .texi
        just like .texinfo.

        * Version 3.60.10.

        * job.c: Move vfork decl into make.h.

Fri Sep 27 18:45:30 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * compatMakefile (glob/libglob.a): Pass CC value to submake.

Thu Sep 26 00:08:15 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * load.c (load_average): Made not static.

        * load.c [ultrix && vax]: Define LDAV_TYPE and LDAV_CVT for Ultrix 4.2.

Tue Sep 24 00:17:20 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.9.

        * read.c (record_files): Warn about extra cmds even if the target's
        name begins with a dot.  I think the lusers can handle this.

Mon Sep 23 22:33:26 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * make.h, arscan.c: Don't declare bcmp, bzero, or bcopy if they're
        #define'd.
        * make.h: Declare write and open.

        * default.c (default_suffixes, default_suffix_rules,
        default_variables): Add .C just like .cc.
        * make.texinfo (Catalogue of Rules): Document .C.

        * make.man (-w): Fix gramo.

Fri Sep 20 17:18:16 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * make.h: No text after #endif.

Sun Sep 15 16:20:46 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * Version 3.60.8.

        * implicit.c (pattern_search): In the second pass, recurse on rule
        deps that don't have a %.  Why did I make it not do this?

Fri Sep 14 18:29:39 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * read.c (record_files): For extra cmds, use the last ones given.
        If the target's name doesn't begin with a dot (bletch!!), emit a
        two-line warning, one line giving the old cmds' location and the
        other the new cmds' location.

        * misc.c (makefile_error, makefile_fatal): New fns.
        * make.h: Declare them.
        * Use them instead of error/fatal for all msgs including a file
        name and line number.

Thu Sep 13 16:35:54 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * make.h: Declare define_default_variables.
        Declare ar_parse_name, instead of ar_name_parse (M-t).

Mon Sep 10 18:35:40 1991  Roland McGrath  (roland@wookumz.gnu.ai.mit.edu)

        * Version 3.60.7.

        * make.texinfo (Variables: Setting): Say whitespace is removed if
        "immediately after =", rather than simply "after =".

        * job.c: Don't declare wait #ifdef POSIX.

        * make.h [__GNUC__]: #undef alloca and then #define it.

        * main.c (main): When pruning makefiles which might loop from the
        read_makefiles chain, look at all `prev' entries of double-colon rules.

Fri Sep  7 00:41:53 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * main.c (main): Only remove makefiles with cmds but no deps from
        the list of makefiles to be rebuilt if they are :: targets.
        : targets with cmds and no deps are not dangerous.

Wed Sep  5 17:35:51 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * compatMakefile (defines): Add comment that some compilers take
        ENUM_BITFIELDS but produce bogus code.
        (LOAD_AVG): Fix examples to \ "s.
        (LOADLIBES): Add comment that SGI Irix needs -lmld for nlist.

Tue Sep  4 20:26:26 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.6.

Fri Aug 30 19:34:04 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * remake.c (update_file_1): When checking the command_state of
        deps, check through the prev chain.
        (update_goal_chain): When a target is finished, start checking its
        prev (if it has one) instead.

Wed Aug  7 17:32:03 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * rule.c (convert_to_pattern): Allow files with deps to define
        suffix rules (really this time).

Mon Aug  5 17:09:21 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * misc.c (user_access, make_access): Do saved-IDs (USG) flavor
        #ifdef POSIX.

        * file.c (enter_file): Strip ./s here.
        * read.c (parse_file_seq): Not here.

Tue Jul 23 23:34:30 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * compatMakefile: Added comment that -lPW alloca is broken on HPUX.

Thu Jul 18 03:10:41 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.5.

        * read.c (read_makefile): Ignore lines containing chars that are
        all isspace, not just all isblank.

        * make.texinfo (Copying): @include gpl.texinfo, rather than copying
        the text.
        * gpl.texinfo: New file (symlink to /gd/gnu/doc/gpl.texinfo).
        * GNUmakefile: Put gpl.texinfo in distribution.

Tue Jul 16 12:50:35 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * make.h: #define _GNU_SOURCE before including headers.
        Include <ctype.h> and define isblank if <ctype.h> doesn't.
        * commands.c: Don't include <ctype.h> here.
        * *.c: Use isblank instead of explicit ' ' || '\t'.

Mon Jul 15 17:43:38 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * function.c (expand_function: `filter'/`filter-out'): Fixed to not
        loop infinitely.

Fri Jul 12 12:18:12 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * function.c (expand_function: `filter'/`filter-out'): Rewritten to
        handle filter-out of multiple patterns properly.  Also no longer
        mallocs and reallocs for temp array; uses alloca and a linked-list
        instead.

Wed Jul 10 22:34:54 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.4.

        * make.texinfo: Moved some @groups that were outside @examples to
        be inside them.

        * load.c [apollo] (load_average): Define using special syscall for
        Apollo DOMAIN/OS SR10.n.

Thu Jul  4 12:32:53 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * make.texinfo (Missing): Added Unix excessive implicit rule
        search; mention that POSIX.2 doesn't require any of the missing
        features.
        (Top): Updated printed manual price to $15.

Wed Jul  3 18:17:50 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * file.c (rename_file): Carry over last_mtime when merging files.
        * remake.c (f_mtime): Tail-recurse after renaming VPATH file, to
        check for saved date in existing renamed-to file.

        * remote-cstms.c (start_remote_job): Use PATH_VAR.

        * commands.c [POSIX || __GNU_LIBRARY__]: Don't declare getpid.

        * compatMakefile (glob-{clean,realclean}): Run clean/realclean in glob.
        (clean, realclean): Require those.

        * make.h: Always declare environ.
        Don't declare old glob functions.

        * GNUmakefile: Make no-lib deps for load.c and remote.c.

Tue Jul  2 18:35:20 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * Version 3.60.3.

Mon Jul  1 16:58:30 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * read.c (multi_glob): Don't pass GLOB_QUOTE flag to glob.

        * make.h [POSIX]: Include <unistd.h>, and don't declare things that
        should be there.

        * main.c (main) [USG && sgi]: malloc a buffer for broken sgi stdio.

Sat Jun 29 11:22:21 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * function.c (expand_function: `shell'): Use alloca for the error
        msg buffer, instead of assuming an arbitrary max size.

Fri Jun 28 18:15:08 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * job.c [POSIX] (search_path): Do real 1003.1 goop to get NGROUPS_MAX.

Wed Jun 26 11:04:44 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * default.c (define_default_variables): New fn.
        (install_default_implicit_rules): Code for above fn moved there.
        * main.c (main): Do define_default_variables before reading the
        makefile.

Tue Jun 25 17:30:46 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * main.c (main): Quote ; in MAKEOVERRIDES.

Tue Jun 18 13:56:30 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * compatMakefile: Fixed typo in comment.

Tue Jun 11 00:14:59 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * Version 3.60.2.

Mon Jun 10 14:46:37 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * make.h: Always include <sys/types.h>.
        [POSIX]: Include <limits.h> and #define MAXPATHLEN to be PATH_MAX.

        * default.c (default_suffix_rules: .texinfo.dvi): Use $(TEXI2DVI).
        (default_variables): Define TEXI2DVI.

Thu Jun  6 16:49:19 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * Version 3.60.1.

        * make.h (SIGNAL): Cast handler arg to SIGHANDLER type.

Wed Jun  5 06:00:43 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * read.c (multi_glob): Use POSIX.2 `glob' function.
        If a glob pattern matches nothing, leave it as is (a la sh, bash).
        Also, if can't find USER for ~USER, leave it as is (a la bash).

Mon Jun  3 16:36:00 1991  Roland McGrath  (roland@albert.gnu.ai.mit.edu)

        * compatMakefile: Rewrote comments about -Ds to be easier to use.

        * make.h, arscan.c, remake.c, main.c, dir.c, job.c: Changed tests
        of _POSIX_SOURCE to POSIX.

        * job.c: Take getdtablesize out of #ifdef __GNU_LIBRARY__.
        Put separately #ifdef USG.

        * COPYING: Replaced with version 2.
        * Changed copyright notices to refer to GPL v2.

Thu May 30 00:31:11 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * make.h: Don't declare sigblock for POSIX.

        * main.c (main, log_working_directory) [USG]: Get getcwd failure
        mode from errno, not passed buffer like BSD getwd.

        * misc.c (child_access): New fn to set access for a child process;
        like user_access, but you can't change back.
        * make.h: Declare it.
        * job.c (exec_command): Use it in place of user_access.

Wed May 29 23:28:48 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * default.c (default_variables) [pyr]: PC = pascal.

Tue May 28 20:24:56 1991  Roland McGrath  (roland@churchy.gnu.ai.mit.edu)

        * variable.c (print_variable): Put a newline before `endef'.

Sat May 25 02:39:52 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * Version 3.60.

Wed May 22 19:41:37 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * Version 3.59.5.

Thu May 16 13:59:24 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * main.c (main): Do USGr3 setvbuf behavior #ifdef APOLLO.
        Don't handle SIGCHLD #ifdef USG (Apollo is USG but defines SIGCHLD).

Fri May 10 14:59:33 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * remake.c [sgi]: Don't include <sys/file.h>.

Wed May  8 01:54:08 1991  Roland McGrath  (roland@geech.gnu.ai.mit.edu)

        * make.h (SIGHANDLER): #define as (void *) #if __STDC__,
        else (int (*)()).
        (SIGNAL): Use it to cast return value.
        * main.c (main): Cast SIG_IGN to SIGHANDLER when comparing.
        * job.c (block_signals, unblock_signals): Use SIGNAL instead of signal.

        * main.c: Declare mktemp to return char*, not int.

        * job.c (new_job): Don't increment files_remade.
        * remake.c (notice_finished_file): Do it here.

        * read.c (do_define): Don't clobber DEFINITION[-1] on empty defns.
        Free storage that is no longer needed.

Wed Apr 24 20:49:48 1991  Roland McGrath  (roland at churchy.gnu.ai.mit.edu)

        * misc.c (message): New fn to print informational msgs with
        leading "make: " or "make[N]: ".
        * make.h: Declare it.
        * remake.c (update_file): Use it instead of printf.

Fri Apr 19 05:52:45 1991  Roland McGrath  (roland at churchy.gnu.ai.mit.edu)

        * main.c (main): When there are no targets, if there were no
        makefiles, print a different error message, which mentions makefiles.

Tue Apr 16 03:22:45 1991  Roland McGrath  (roland at geech.gnu.ai.mit.edu)

        * remake.c (update_file): Print "nothing to be done" instead of "is
        up to date" if FILE->cmds == 0.

        * job.c [!WIFEXITED]: Define if not already defined.

Thu Apr 11 18:00:50 1991  Roland McGrath  (roland at wookumz.gnu.ai.mit.edu)

        * arscan.c (ar_name_equal): Fixed truncation comparison.

Tue Apr  2 16:17:35 1991  Roland McGrath  (roland at churchy.gnu.ai.mit.edu)

        * glob.c: Use common version from djm.
        * dir.c: Snarfed #ifdef mess for <dirent.h> or whatever from glob.c.
        (dir_file_exists_p): Ignore directory entries with d_ino==0.

Mon Apr  1 20:49:45 1991  Roland McGrath  (roland at albert.gnu.ai.mit.edu)

        * Version 3.59.4.

Fri Mar 29 19:16:18 1991  Roland McGrath  (roland at albert.gnu.ai.mit.edu)

        * job.c (free_child): Free CHILD->environment and its elts.

Sat Mar 23 14:08:09 1991  Roland McGrath  (roland at albert.gnu.ai.mit.edu)

        * read.c (read_makefile): Don't ignore lines containing only
        comments if they start with a tab.  Such lines should be passed to
        the shell for it to decide about the comments.

        * job.c (free_child): Free CHILD->command_lines and its elts, not
        CHILD->commands (which is obsolete).
        * job.h, job.c: Remove obsolete `commands' member of `struct child'.

Sun Mar 17 18:40:53 1991  Roland McGrath  (roland at albert.ai.mit.edu)

        * remake.c (update_file): Print a msg for a top-level up-to-date
        phony target (a different one than for a real file).

        * read.c (conditional_line): Boundary check so we don't check the
        value of the -1th elt of the stack (which is bogus).

Sat Mar 16 16:58:47 1991  Roland McGrath  (roland at albert.ai.mit.edu)

        * read.c (conditional_line): Don't evaluate an if* when we're
        already ignoring.  Instead, just push a new level, with a value of
        1, to keep ignoring.

Tue Mar 12 00:16:52 1991  Roland McGrath  (roland at geech.ai.mit.edu)

        * Version 3.59.3.

Mon Mar 11 23:56:57 1991  Roland McGrath  (roland at geech.ai.mit.edu)

        * job.c (construct_command_argv_internal): Quote backslashes
        when building the shell -c line.

Fri Mar  8 01:40:18 1991  Roland McGrath  (roland at geech.ai.mit.edu)

        * job.c (exec_command): Call user_access rather than setgid(getgid()).

        * misc.c (remove_comments): Renamed from collapse_line; took out
        collapse_continuations call.
        * make.h: Change decl.
        * read.c (read_makefile): Collapse continuations on the line buffer
        immediately after reading it.  Call remove_comments rather than
        collapse_line (which is now defunct).

Thu Feb 21 18:06:51 1991  Roland McGrath  (mcgrath at cygint.cygnus.com)

        * misc.c (user_access, make_access): New fns to toggle btwn permissions
        for user data (files and spawning children), and permissions for make
        (for taking the load average, mostly).
        * make.h: Declare them.
        * job.c (start_job): Call make_access before wait_to_start_job, and
        user_access after.
        * main.c (main): Call user_access before doing much.

Mon Feb  3 15:02:03 1991  Roland McGrath  (roland at albert.ai.mit.edu)

        * Version 3.59.2.

Tue Jan 29 20:30:50 1991  Roland McGrath  (roland at cygint.cygnus.com)

        * read.c (read_all_makefiles): Use allocated_variable_expand to expand
        `$(MAKEFILES)', since the results are used across calls to
        read_makefile, which could clobber them.

Wed Jan 23 00:24:10 1991  Roland McGrath  (roland at cygint.cygnus.com)

        * main.c (main): Call install_default_implicit_rules after reading
        makefiles, not before.
        * default.c (install_default_implicit_rules): If a suffix-rule file
        entry has cmds, don't give it any from default_suffix_rules.

Fri Jan 17 17:39:49 1991  Roland McGrath  (roland at albert.ai.mit.edu)

        * arscan.c: Added support for AIX archives.

        * remake.c: Don't include ar.h.
        * main.c: Removed unused atol decl.
        * arscan.c (ar_scan): Declare arg FUNCTION to return long int.
        * ar.c (ar_touch): Don't perror for an invalid archive.
        * make.h: Declare lseek as long int.

        * job.c [hpux]: Define getdtablesize a la USG.

Sun Jan 12 21:08:34 1991  Roland McGrath  (roland at albert.ai.mit.edu)

        * Version 3.59.1.

Fri Jan 10 03:48:08 1991  Roland McGrath  (roland at albert.ai.mit.edu)

        * job.c (search_path): Take new arg, place to put full pathname (rather
        than mallocing it).
        (exec_command): Pass it, using auto storage.

        * main.c (print_version): Updated copyright years.

Wed Jan  8 19:46:19 1991  Roland McGrath  (roland at albert.ai.mit.edu)

        * job.c [_POSIX_SOURCE]: Just #include <sys/wait.h>, and define macro
        WAIT_NOHANG in terms of waitpid.
        [!_POSIX_SOURCE && (HAVE_SYS_WAIT || !USG)]: Don't #include <signal.h>
        (make.h does).
        Define macro WAIT_NOHANG in terms of wait3.
        (child_handler): #ifdef on WAIT_NOHANG, not HAVE_SYS_WAIT || !USG.
        Use WAIT_NOHANG macro instead of wait3.

        * file.h (struct file.command_state): Remove unused elt.

Wed Dec 26 18:10:26 1990  Roland McGrath  (roland at albert.ai.mit.edu)

        * commands.c (set_file_variables): If FILE got its commands from
        .DEFAULT, make $< == $@ (4.3 BSD/POSIX.2d11 compat).

Mon Dec 24 17:36:27 1990  Roland McGrath  (roland at albert.ai.mit.edu)

        * default.c (default_variables): Rename 2nd LINK.s defn to LINK.S.

Fri Dec 14 15:05:25 1990  Roland McGrath  (roland at albert.ai.mit.edu)

        * vpath.c (selective_vpath_search): Check for makefile-mentioned before
        checking for actual existence.  The old order loses if the containing
        directory doesn't exist (but a rule might make it).

        * make.h [__GNUC__]: Don't #define alloca if already #define'd.

        * rule.c (convert_to_pattern): Don't look at the target constructed for
        the empty rule when making the null-suffix rule.  Construct it over
        again, since the former may have been freed already.

Thu Dec 13 17:21:03 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * make.h [__GNU_LIBRARY__]: Include <unistd.h> to get random fn decls.

Wed Dec 12 17:12:59 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * make.h, arscan.c, glob.c: Only include <memory.h> #ifdef USG.

        * variable.c (define_variable_in_set): Replace env_overrides check that
        wasn't really redundant (undoing Sep 28 change).  Add comment saying
        why this check is necessary.

        * job.c, main.c [DGUX]: Needs siglist like USG.

Mon Dec 11 01:19:29 1990  Roland McGrath  (roland at albert.ai.mit.edu)

        * default.c [M_XENIX]: For rules that are different for Xenix, use the
        generic Unix version #ifdef __GNUC__.

        * main.c [M_XENIX]: Use USGr3-style setvbuf call.

        * read.c (find_percent): Do backslash folding correctly, not leaving
        extra crud on the end of the string.

Sun Dec 10 21:48:36 1990  Roland McGrath  (roland at albert.ai.mit.edu)

        * job.c: Don't declare wait3 if it's #defined.

        * GNUmakefile, compatMakefile, make.texinfo: Change make-info
        to make.info.

Thu Dec  7 21:20:01 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * make.h [STDC_HEADERS || __GNU_LIBRARY__ || _POSIX_SOURCE]: Use
        ANSI <string.h> and names for str/mem functions.
        Use <stdlib.h> to declare misc fns rather than explicit decls.
        [_POSIX_SOURCE]: Don't declare kill (<signal.h> will).
        Include <sys/types.h> before <signal.h> because some braindead
        nonconformant 1003.1 implementation needs it.
        * misc.c: Don't declare malloc, realloc.  Do it in make.h.
        * arscan.c, glob.c: Use sequence for string fns from make.h verbatim.
        * make.h (S_ISDIR, S_ISREG): Declare if necessary.
        * commands.c (delete_child_targets), job.c (search_path), read.c
        (construct_include_path): Use S_ISfoo(m) instead of
        (m & S_IFMT) == S_IFfoo.
        * dir.c, glob.c [_POSIX_SOURCE]: Use dirent.

Wed Nov 29 22:53:32 1990  Roland McGrath  (roland at geech.ai.mit.edu)

        * Version 3.59.

Tue Nov 28 16:00:04 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * arscan.c (ar_name_equal) [APOLLO]: Don't do `.o' hacking.  On Apollos
        the full file name is elsewhere, and there is no length restriction (or
        so I'm told).

Thu Nov 23 17:33:11 1990  Roland McGrath  (roland at albert.ai.mit.edu)

        * load.c [hp300 && BSD] (LDAV_CVT): Define for this system.

Tue Nov 21 07:58:40 1990  Roland McGrath  (roland at albert.ai.mit.edu)

        * read.c (record_files): Fix trivial bug with deciding to free storage
        for a file name.

Thu Nov 16 06:21:38 1990  Roland McGrath  (roland at geech.ai.mit.edu)

        * compatMakefile ($(bindir)/make): Install it setgid kmem.

Thu Nov  1 16:12:55 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * GNUmakefile (make-*.tar.Z): Use `h' option to tar (dereference
        symlinks), to grab texinfo.tex from wherever it lives.

Tue Oct 30 16:15:20 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * Version 3.58.13.

Fri Oct 26 14:33:34 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * GNUmakefile: make-*.tar.Z: Include texinfo.tex.

Tue Oct 23 19:34:33 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * main.c (define_makeflags): When there are no flags to write, make
        sure the array has two leading nulls, since `MAKEFLAGS' is defined from
        &flags[1].

        * main.c (default_keep_going_flag): New variable (constant one).
        (command_switches: -k, -S): Use above for default value.
        (define_makeflags): Only write flag/flag_off switches if they are on,
        and either there is no default value, or they are not the default.

Mon Oct 22 16:14:44 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * main.c (struct command_switch): New member `no_makefile'.
        (command_switches: -n, -q, -t): Set no_makefile == 1.
        (define_makeflags): Take new arg MAKEFILE: if nonzero, don't use
        options whose `no_makefile' flags are set.
        (main): Call define_makeflags with MAKEFILE==1 before remaking
        makefiles, and again with MAKEFILE==0 before remaking goals.

Tue Oct  2 17:16:45 1990  Roland McGrath  (roland at geech.ai.mit.edu)

        * Version 3.58.12.

Mon Oct  1 15:43:23 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * arscan.c [HPUX]: Use PORTAR==1 format.

Sat Sep 29 16:38:05 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * make.h, remake.c, arscan.c: Don't declare `open'.

Fri Sep 28 04:46:23 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * variable.c (define_variable_in_set): Remove redundant -e check.

Wed Sep 26 00:28:59 1990  Roland McGrath  (roland at geech.ai.mit.edu)

        * job.c (start_job): Set RECURSIVE from the right elt of
        CHILD->file->cmds->lines_recurse.

        * commands.c (chop_commands): Don't botch the line count for allocating
        CMDS->lines_recurse.

        * Version 3.58.11.

        * job.c (start_job): Don't always increment CHILD->command_line!  Only
        do it when CHILD->command_ptr has run out!  (Dumb bug.  Sigh.)

Thu Sep 20 02:18:51 1990  Roland McGrath  (roland at geech.ai.mit.edu)

        * GNUmakefile [ARCH]: Give explicit rule for remote.{c,dep} to use
        variable `REMOTE' for more flags.
        ($(prog)): Link in $(LOADLIBES).

Wed Sep 19 02:30:36 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * commands.h (struct commands): New member `ncommand_lines', the number
        of elts in `command_lines' et al.
        * commands.c (chop_commands): Set `ncommand_lines' elt of CMDS, and
        don't put a nil pointer at the end of `command_lines'.
        * job.h (struct child): New member `command_lines' to hold
        variable-expanded command lines.
        * job.c (new_job): Store expanded command lines in `command_lines'
        member of new child.  Don't clobber FILE->cmds.
        (start_job): Use CHILD->command_lines in place of
        CHILD->file->cmds->command_lines.

        * variable.h, variable.c, job.c, expand.c: Undo yesterday's change,
        which is no longer necessary since we have cleverly avoided the issue.

        * job.c (start_job): Don't variable-expand each command line.
        (new_job): Do them all here, storing the expansions in the array.

Tue Sep 18 01:23:13 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * variable.h (struct variable): Remove `expanding' member.
        * variable.c (define_variable_in_set): Don't initialize it.
        * expand.c (struct variable_expanding): New type, a linked list
        containing `struct variable' pointers.
        (variables_expanding): New variable, the chain of variables currently
        being expanded.
        (recursively_expand): Don't test and set `expanding' member.
        Instead, run through the `variables_expanding' chain looking for a link
        referring to V to find self-reference.  Add a new link to the chain,
        describing V, before recursive expansion, and pop it off afterward.
        * job.c (child_handler): Save `variables_expanding' and clear it before
        calling start_job, and restore it afterward.  This avoids major lossage
        when the SIGCHLD comes in the middle of variable expansion.

Mon Sep 17 14:46:26 1990  Roland McGrath  (roland at geech.ai.mit.edu)

        * job.c, commands.c: Don't define sigmask.
        * make.h: Put it here instead.

        * variable.c (target_environment): If `.NOEXPORT' was specified as a
        target, only export command-line and environment variables, and
        file-origin variables that were in the original environment.

        * make.man: Add missing ?roff control for `-I' option description.

Thu Sep 13 14:10:02 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * load.c [UMAX]: Move #include <sys/sysdefs.h> to [not UMAX_43].

Wed Sep 12 15:10:15 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * expand.c (recursively_expand): Don't use `reading_filename' and
        `reading_lineno_ptr' if they're nil.

Thu Aug 30 17:32:50 1990  Roland McGrath  (roland at geech)

        * Version 3.58.10.

Tue Aug 28 04:06:29 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * job.c [USG] (unknown_children_possible): New variable, set nonzero
        when it's possible for children not in the `children' chain to die.
        (block_signals) [USG]: Set it.
        (unblock_signals) [USG]: Clear it.
        (child_handler) [USG]: Don't complain about unknown children if
        `unknown_children_possible' is set.

        * read.c (do_define): Make sure there's enough space for the newline,
        so we don't write off the end of allocated space.

        * arscan.c (ar_name_equal): Fixed to work when MEM is AR_NAMELEN-1 but
        NAME is not the same length.

Sat Aug 25 16:17:14 1990  Roland McGrath  (roland at geech)

        * job.c (construct_command_argv_internal): Use a static char array for
        a constant, since old C has no auto aggregate initializers.

Thu Aug 23 16:11:03 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * job.c (search_path): If PATH is nil or "" use a default path.

Wed Aug 22 01:05:32 1990  Roland McGrath  (roland at churchy.ai.mit.edu)

        * Version 3.58.9.

        * job.c (exec_command): Don't take PATH and SHELL args.  Get them from
        ENVP.
        (child_execute_job): Don't take FILE arg, and don't pass path and shell
        to exec_command.
        (start_job): Don't pass FILE arg to child_execute_job.
        * function.c (expand_function: `shell'): Ditto.
        * main.c (main): Don't pass path and shell to exec_command.

Fri Aug 17 23:17:27 1990  Roland McGrath  (roland at geech)

        * job.c (construct_command_argv_internal): New fn broken out of
        construct_command_argv.  Takes strings SHELL and IFS instead of doing
        variable expansion for them.  Recurse to make an argv for SHELL,
        passing SHELL==0.  When SHELL==0, don't recurse for shell argv; make a
        simple one using /bin/sh.
        (construct_command_argv): Do the variable expansions and call above.

Thu Aug 16 19:03:14 1990  Roland McGrath  (roland at geech)

        * read.c (multi_glob): For ~USER/FILE, if USER isn't found, don't
        change the file name at all.

Tue Aug  7 18:33:28 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * function.c (expand_function: `suffix'/`notdir'): Don't kill the last
        space if we never wrote one.

        * function.c (expand_function: `suffix'): Retain the dot, like the
        documentation says.

Mon Aug  6 14:35:06 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.58.8.

        * main.c (decode_switches): For positive_int and floating cases, move
        SW past the arg (and don't set it to ""), so another switch can follow.

Fri Aug  3 00:43:15 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * job.c (child_execute_job): Use unblock_signals instead of
        push_signals_blocked_p (0).

        * main.c (fatal_signal_mask): New variable, mask of signals caught with
        fatal_error_signal.
        (main): Set it.
        * job.c ({block,unblock}_children): Renamed to {block,unblock}_signals.
        Block/unblock both child signal and signals in fatal_signal_mask.
        (children_blocked_p_{stack,max,depth}, {push,pop}_children_blocked_p):
        Renamed from children to signals.  Use {block,unblock}_signals instead
        of {block,unblock}_children.
        * commands.c (fatal_error_signal), job.c (wait_for_children, new_job,
        child_execute_job, main, log_working_directory), function.c
        (expand_function: `shell'), job.h: Rename {push,pop}_children_blocked_p
        to {push,pop}_signals_blocked_p.
        * job.c (child_handler): Call {block,unblock}_signals instead of just
        {block,unblock}_remote_children.  We need to block the fatal signals.

Thu Aug  2 22:41:06 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * main.c, function.c: Fixed typos in comments.

        * file.c (print_file_data_base): Fix computation of avg files/bucket.

Tue Jul 31 22:11:14 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.58.7.

Wed Jul 25 16:32:38 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * arscan.c (ar_name_equal): Fixed to really do it right.
        (ar_member_pos): Fixed order of args.
        * ar.c (ar_member_date_1): Ditto.

Fri Jul 20 15:30:26 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * arscan.c (ar_name_equal): Rewritten.  Accounts for a possible
        trailing slash in MEM.

        * remake.c (f_mtime): Keep track of whether ARNAME is used and free it
        if not.  Also free MEMNAME.
        * ar.c (ar_member_date, ar_touch): Ditto.

        * arscan.c (arscan) [HPUX or hpux]: Treat same as USGr3 PORTAR==1.

        * make.h: If NSIG is not defined, but _NSIG is, #define NSIG _NSIG.

        * compatMakefile: Don't use $* in explicit rules.

        * default.c (default_variables: "PREPROCESS.S"): Include $(CPPFLAGS).

        * remake.c (f_mtime): If FILE is an ar ref, get the member modtime.

        * function.c (string_glob): Terminate the string properly when it's
        empty.

Wed Jul 18 11:26:56 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.58.6.

        * commands.c (set_file_variables): Fixed computation for ^F/?F elt len.

Sat Jul 14 13:41:24 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * job.c (construct_command_argv): Always use
        allocated_variable_expand_for_file instead of variable_expand_for_file
        because we might be called from inside a variable expansion (for the
        `shell' function).

        * function.c (expand_function: `shell'): Free the arglist's storage
        correctly.  construct_command_argv only allocates ARGV and ARGV[0].

        * job.c (children_blocked_p_idx): Renamed to children_blocked_p_depth.
        (push_children_blocked_p, pop_children_blocked_p): Use ..._depth
        instead of ..._idx, and do it right!

Wed Jul 11 15:35:43 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * make.h (SIGNAL): New macro to replace `signal' calls.  Does arg and
        ret value casts to (void *) #ifdef __STDC__ to avoid conflicts btwn
        ANSI and BSD `signal' and handler types.
        * main.c (main), job.c (child_handler): Use it.

Fri Jul  6 00:00:38 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * ar.c (ar_member_date, ar_touch): Pass 2nd arg to f_mtime.

        * read.c (read_makefile): Search the include path for MAKEFILES
        variable makefiles (TYPE == 1), like it says in the manual.

        * file.h (struct file), main.c (struct command_switch): Remove trailing
        commas from enums.

        * commands.c (execute_file_commands): Remove unused variables.
        * commands.h: Declare chop_commands.
        * make.h: Declare uniquize_deps.
        * main.c (main): Remove unused variable.
        (decode_switches): Remove unused label.
        * remake.c: Include "ar.h" for ar_parse_name decl.
        * implicit.c (try_implicit_rule): Remove unused variable.
        * function.c (expand_function: `shell'): Declare fork, pipe.
        * ar.c: Declare ar_name_equal.

        * GNUmakefile: If using gcc, add warning flags to CFLAGS.

        * remake.c: Remove decl of ar_member_date, since it's done in make.h.

        * remake.c (f_mtime): For ar refs, allow the archive to be found via
        VPATH search if we're searching, and change the ar ref accordingly.

        * ar.c (ar_parse_name): New global fn to parse archive-member
        references into the archive and member names.
        (ar_member_date, ar_touch): Use it.
        * make.h: Declare it.

        * remake.c (f_mtime): After doing rename_file, do check_renamed instead
        of assuming rename_file will always set FILE->renamed (which it won't).

        * vpath.c (selective_vpath_search): Only accept prospective files that
        don't actually exist yet are mentioned in a makefile if the file we are
        searching for isn't a target.

Wed Jul  4 04:11:55 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * remake.c (update_goal_chain): Do check_renamed after calling
        file_mtime.
        (check_dep): Ditto after update_file.

        * file.c (rename_file): Prettied up long message for merging cmds.

        * remake.c (update_file_1): Get each dep file's modtime, and allow for
        it being renamed, before checking for a circular dep, since a renaming
        may have introduced one.

Tue Jul  3 18:15:01 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * ar.c (ar_touch): Don't free ARNAME since enter_file holds onto the
        storage.

        * function.c (string_glob): Don't leave a trailing space.

        * read.c (do_define): Allow leading whitespace before `endef'.

Mon Jul  2 14:10:16 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * implicit.c (pattern_search): No longer take NAME arg.  Instead take
        ARCHIVE flag.  If ARCHIVE is nonzero, FILE->name is of the form
        "LIB(MEMBER)"; rule for "(MEMBER)" is searched for, and LASTSLASH is
        set to nil.  Since NAME was only non-nil when it was the archive member
        name passed by try_implicit_rule, this change easily allows turning off
        LASTSLASH checking for archive members without excessive kludgery.
        (try_implicit_rule): Pass ARCHIVE flag instead of file name.

        * Version 3.58.5.

        * commands./c (set_file_variables): Don't kill last char of $(^D) elts.

Sat Jun 30 00:53:38 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * ar.c (ar_member_date): Don't free ARNAME since enter_file holds onto
        the storage.

        * arscan.c (ar_scan) [sun386 && PORTAR == 1]: Treat like USGr3.

Wed Jun 27 14:38:49 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * main.c (main): Put a newline on the debugging message when deciding
        not to remake a makefile to avoid a possible loop.
        Only decide not to remake makefiles that have commands (as well as
        being targets and having no deps).

Fri Jun 22 12:35:37 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * default.c (default_variables): Define `LINK.s' and `LINK.S'.
        (default_suffix_rules): Define .S.o rule.

        * job.c (construct_command_argv): If we decide to go the slow route,
        free all storage for the chopped args.
        (start_job): Free the argument list's storage correctly.
        construct_command_argv only allocates ARGV and ARGV[0].

Tue Jun 19 18:27:43 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.58.4.

Fri Jun 15 21:12:10 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * glob.c: New version from ai-lab which doesn't do [^abc].

Thu Jun  7 00:30:46 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * dir.c: Copied dirent vs direct et al mess from glob.c.

        * glob.c: Replaced with updated version from djm.
        * glob.c: Check macro DIRENT instead of _POSIX_SOURCE for <dirent.h>.
        __GNU_LIBRARY__ implies DIRENT and STDC_HEADERS.

Thu May 31 22:19:49 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * vpath.c (vpath_search): Don't stop the loop if a pattern matches but
        the search fails.  All matching patterns have their paths searched
        (like it says in the manual).

        * make.texinfo (Rules: Directory Search: Selective Search): Say that
        multiple `vpath' directives with the same pattern DO accumulate, not
        supersede earlier ones.

        * vpath.c (print_vpath_data_base): Increment the count of vpaths on
        each loop iteration, rather than letting it stay zero.

        * Version 3.58.3.

        * job.c (block_children, unblock_children): Made static.
        (push_children_blocked_p, pop_children_blocked_p): New functions to
        push and pop whether children are blocked or not.
        * job.h: Declare push_children_blocked_p, pop_children_blocked_p and
        not block_children, unblock_children.
        * commands.c (fatal_error_signal), job.c (wait_for_children, new_job,
        child_execute_job), main.c (main, log_working_directory): Use sequences
        of push_children_blocked_p (1) and pop_children_blocked_p () instead of
        explicitly blocking and unblocking children.
        * function.c (expand_function: `shell'): Don't unblock children.  The
        push-pop sequence in wait_for_children makes it unnecessary.

Tue May 29 21:30:00 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * read.c (do_define): Don't include the last newline in the definition.

        * function.c (expand_function: `shell'): Call construct_command_argv
        before forking and don't fork if it returns nil.  Free the argument
        list's storage before finishing.

        * job.c (start_job): Free the storage for the child's argument list
        in the parent side of the fork after the child has been spawned.

        * job.c (start_job): If construct_command_argv returns nil, go to the
        next command line.

        * job.c (construct_command_argv): Use the shell if the command contains
        an unterminated quote.

Wed May 23 19:54:10 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.58.2.

        * read.c (read_makefile): Parse "override define" correctly.

Thu May 17 15:25:58 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * arscan.c [USG]: Don't declare memcpy and memcmp.  <memory.h> should
        do this anyway (and lack of declarations is harmless).

        * remote-customs.c: Renamed to remote-cstms.c for System V.
        * remote.c [CUSTOMS]: Changed accordingly.

Sun May 13 14:38:39 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * GNUmakefile: Use same cmds for doc tar.Z as for dist tar.Z (so the
        contents go in make-N.NN).

Thu Apr 26 19:33:25 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.58.1.

Wed Apr 25 20:27:52 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * job.c (init_siglist): Don't do SIGUSR1 and SIGUSR2 if they are the
        same as SIGIO and SIGURG (true on Cray).

Tue Apr 24 20:26:41 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * arscan.c (ar_scan): Do behavior for PORTAR == 1 and USGr3 also
        #ifdef APOLLO.

Wed Apr 11 10:00:39 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * job.c (exec_command): Set the effective GID to the real GID.  Somehow
        this code got lost.

        * implicit.c (pattern_search): Use the right index variable when
        seeing if we need to expand FILE->also_make.

Sun Mar  4 09:18:58 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.58.0.

        * remake.c (remake_file): Treat non-targets without commands under -t
        the same as anything else without commands.

Sat Feb 24 17:46:04 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * default.c (default_variables: PREPROCESS.S): Removed $< from defn.

        * main.c (main): Ignore arguments that are the empty string, rather
        than feeding them to enter_file and barfing therein.

Wed Feb 14 16:28:37 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * main.c (main): Call construct_include_path after doing chdirs.

Thu Feb  8 13:43:44 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.58.

Sat Feb  3 22:06:55 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.57.7.

        * make.texinfo (Implicit: Catalogue of Rules): For RCS, noted that
        working files are never overwritten by the default rule.

Thu Feb  1 17:27:54 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * rule.c (count_implicit_rule_limits): Redid loop control to not run
        twice on freed rules.

        * GNUmakefile: Made `.dep' files be architecture-specific too.

        * main.c (main, log_working_directory) [USG]: Block children around
        calls to `getwd' (actually `getcwd' on USG), because that function
        sometimes spawns a child running /bin/pwd on USG.

Tue Jan 30 14:02:50 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * function.c (subst_expand): Pay attention to SUFFIX_ONLY, putz.

Wed Jan 24 21:03:29 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * make.man: Fixed repeated word.

        * make.texinfo (Missing): Reworded a buggy sentence.

Mon Jan 22 12:39:22 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * main.c (print_version): Added 1990 to copyright notice.

        * Version 3.57.6.

Sat Jan 20 11:52:01 1990  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * file.c (rename_file): Don't free the storage for the old name, since
        it might not have been malloc'd.

        * job.c (construct_command_argv): Call
        allocated_variable_expand_for_file instead of variable_expand_for_file
        to expand `$(SHELL)'.

        * make.texinfo (Bugs): Change address from roland@wheaties.ai.mit.edu
        to roland@prep.ai.mit.edu.

Tue Jan 16 19:22:33 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.57.5.

Sun Jan 14 16:48:01 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * job.c (start_job): Only call wait_to_start_job for the first command
        line in each sequence.

Thu Jan  4 14:27:20 1990  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * load.c [LDAV_BASED] (wait_to_start_job): Loop while job_slots_used >
        0, not > 1.

        * job.c (search_path): Don't return a pointer to local storage.
        Allocate data space for the pathname instead.

        * function.c (expand_function: `shell'): Don't write garbage if the
        child wrote no output.

Wed Jan  3 15:28:30 1990  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.57.4.

        * file.h (struct file): New member `renamed', a `struct file *' that is
        the place this file has been renamed to (or nil).
        (check_renamed): Macro to check for a file having been renamed.
        Dereferences the renaming and sets the given variable.
        * file.c (rename_file): Completely rewritten.  Renames in place if
        possible, or moves FILE to a different hash bucket if there is no
        existing file with the new name.  If there is an existing file with the
        new name, FILE is merged into it and FILE->renamed is set to point to
        it.
        * variable.c (merge_variable_sets): New fn to merge two variable sets.
        (merge_variable_set_lists): New fn to merge two variable set lists.
        * variable.h: Declare merge_variable_set_lists.
        * remake.c (update_file_1, check_dep): Run `check_renamed' after
        calling file_mtime, check_dep.
        (update_file): Same after update_file_1.
        (update_goal_chain, update_file_1, check_dep): Same after update_file.

        * read.c (uniquize_deps): New fn, broken out of record_files, to remove
        duplicate deps from a chain.
        (record_files): Use it.
        * implicit.c (pattern_search): Use uniquize_deps.

        * file.h (file_mtime_1): New macro, like file_mtime, but take second
        arg, passed to f_mtime.
        (file_mtime): Implement as file_mtime_1 (file, 1).
        (file_mtime_no_search): New macro: file_mtime (file, 0).
        * remake.c (f_mtime): Take new arg SEARCH.  Only do VPATH and `-lNAME'
        searching if it is nonzero.
        * main.c (main): Use file_mtime_no_search for makefiles.
        * remake.c (update_goal_chain): Use file_mtime_no_search if MAKEFILES.

        * main.c (printed_version): New variable, init'd to zero.
        (print_version): Set it to nonzero before returning.
        (die): If -v and !printed_version, call print_version before clean up
        and death.

        * main.c (log_working_directory): Keep track of whether or not the
        "Entering" message has been printed, and return without printing the
        "Leaving" message if not.

        * main.c (decode_switches): Don't complain about missing args before
        checking for a noarg_value elt in the command_switch structure.

Tue Jan  2 15:41:08 1990  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.texinfo (Commands: Recursion: Options/Recursion): Document
        special case of -j.

        * make.texinfo, main.c, job.c: Changed copyright notices to include
        1990.

        * make.texinfo (Top): Fixed introductory paragraph, which said that
        `make' itself (instead of the manual) has various chapters.
        (Variables: Advanced: Substitution Refs): When pxref'ing about
        `patsubst', use node `Text Functions', not `Functions'.
        Add an xref about `patsubst' after description of $(var:a%b=c%d).
        (Functions: Syntax of Functions): Explain why mixing delimiters in
        function/var refs is unwise.  Clarify fn arg evaluation order.
        (Options): Reworded sentence about `-e'.
        (Implicit: Implicit Variables): Don't say `RM' is unused.
        Say the dflt values for the flag vars is empty unless otherwise noted,
        since some have defaults.
        (Implicit: Pattern Rules: Pattern Examples): Clarified use of $< and $@
        in first example.
        (Implicit: Last Resort): Don't say the .DEFAULT example creates files
        "silently".  It's automatic, but not silent.
        (Implicit: Search Algorithm): Fixed confusing ungrammatical sentence
        for item 5.1.
        (Archives: Archive Update): Added missing `next' pointer.
        (Archives: Archive Symbols): Note that GNU `ar' deals with this
        automatically.

        * job.c (search_path): New fn, to search for an executable file in a
        search path (broken out of exec_command).
        (exec_command): Take fourth arg, the shell program to use (if
        necessary).  Use search_path for the program, and the shell program.
        Pass args "file args ..." to shell program (with no -c), where FILE is
        the full pathname of the program (script) to be run.
        (child_execute_job): Pass shell program to exec_command.
        * main.c (main): Ditto.

        * main.c (main): Don't write a message if exec_command returns, because
        it will never return.

Fri Dec 22 16:19:58 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

        * default.c (default_variables: "LINK.cc"): Use $(C++FLAGS) instead of
        $(CFLAGS).

Wed Dec 20 09:58:48 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

        * job.c (new_job): If start_job set the child's `command_state' to
        `cs_finished', call notice_finished_file.

Sun Dec 17 19:45:41 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

        * Version 3.57.3.

Wed Dec 13 17:57:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * rule.c (convert_to_pattern): Accept files with dependencies as
        suffix rules.

Thu Nov 30 15:47:13 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.57.2.

        * function.c (expand_function: `shell'): Don't clobber BUFFER and then
        try to free it.

        * remake.c (update_file_1): Took code to force remake of nonexistent
        deps out of #if 0, and changed the test to nonexistent non-intermediate
        deps.  In version 4, I think removing this test completely will
        implement the new feature that if a: b and b: c and c is newer than a,
        b need not be remade.

Sun Nov 26 16:12:41 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * compatMakefile (load.o, remote.o): Use $*.c instead of explicit file
        names so that using VPATH works.

Tue Nov 21 14:57:18 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.57.1.

Fri Nov 10 03:28:40 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * remake.c (check_dep): Set *MUST_MAKE_PTR if FILE does not exist after
        being updated.  (The exact opposite test was here before; why???)
        (update_file_1): Set a dep's `changed' member after updating it if it
        is phony and has commands (because they will then always be executed).

Thu Nov  9 13:47:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * load.c [UMAX]: #ifdef UMAX_43 include different headers for the
        `inq_stats' call.
        * compatMakefile (LOAD_AVG): Document UMAX_43.

        * Version 3.57.0.

        * commands.c (chop_commands): New function to chop commands into lines.
        * job.c (new_job): Break that code out, and call chop_commands.
        * remake.c (remake_file): Call chop_commands before looking at
        FILE->cmds->any_recurse.

        * make.texinfo (Running: Goals): Don't say that the default target
        won't be taken from an included makefile.

        * remake.c (update_file_1): #if 0 out setting MUST_MAKE if a dep
        doesn't exist.

Fri Nov  3 15:53:03 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.57.

        * variable.c (try_variable_definition): Don't calculate useless value.

        * main.c (define_makeflags): Fixed -j propagation.

        * commands.c (execute_file_commands): Removed unused variable.

Sun Oct 29 11:11:15 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (execute_file_commands): If the commands are empty, call
        notice_finished_file before returning.

Sat Oct 28 23:06:32 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * remake.c (update_file_1): Don't always update a target that has no
        deps.  Only do this for double-colon targets.

Wed Oct 25 16:36:16 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * main.c (main) [hpux]: hpux == HPUX.
        * compatMakefile (defines): Document that HPUX should be defined.

Tue Oct 24 19:19:48 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.56.8.

        * job.c (exec_command): Fixed what mode bits are checked.

        * remake.c (update_file_1): "No cmds and no deps actually changed"
        loses if ! FILE->is_target.

        * make.texinfo (Variables: Setting): Don't say that spaces after a
        variable definition are ignored (since they aren't).

Mon Oct 23 14:34:23 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.56.7.

        * remake.c (update_file_1): If, after being updated, any dependency
        does not exist, remake the target.

        * remake.c (update_file_1): Always update if FILE has commands but no
        deps.

        * commands.c (execute_file_commands): If we return early because there
        are no commands, set FILE->updated.

Thu Oct 19 18:47:37 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * arscan.c (ar_scan) [M_XENIX]: Don't run atoi or atol on the
        `struct ar_hdr' members that are int or long int on Xenix.

Sat Oct 14 10:43:03 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * arscan.c (ar_scan): Cosmetic clean ups.
        (ar_name_equal): New function to compare names, handling truncated
        member names and special `.o' truncation.
        (ar_member_pos): Use ar_name_equal.
        * ar.c (ar_member_date_1): Use ar_name_equal.

        * Version 3.56.6.

        * file.h (struct file): Made `update_status' a `short int', and moved
        it before `command_state' so the bitfields can be packed better.

        * remake.c (files_remade): Made global.
        (notice_finished_file): Don't increment files_remade.
        * job.c (new_job): Do.

        * job.c (start_job): Don't return a value.  Always set
        CHILD->file->command_state to either cs_running or cs_finished.
        (new_job, child_handler): Don't expect start_job to return a value.
        Instead, look at the file's command_state.

        * commands.c (chop_commands): Merged into job.c (new_job).
        * commands.h: Don't declare chop_commands.

        * job.c (start_job): Made static.
        (new_job): New function to create a `struct child' and call start_job.
        (free_child): New function to free a `struct child'.
        (child_handler, new_job): Call it.
        * job.h: Don't declare start_job.  Do declare new_job.
        * commands.c (execute_file_commands): Call new_job.

        * commands.c (execute_file_commands): Don't set FILE->update_status if
        start_job fails.

        * function.c (expand_function): Don't use `reading_filename' and
        `reading_lineno_ptr' if they're nil.

Fri Oct 13 18:16:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * read.c (find_semicolon): New function to look for an unquoted ; not
        preceded by an unquoted # in a string.
        (read_makefile): Call it before expanding the line.  If it finds a ;,
        cut the line short there before expanding it.  If not, call it again
        after expanding.

        * commands.c (execute_file_commands): Don't check FILE->command_state.
        We won't get called unless it's cs_not_started.

        * read.c (read_makefile): Call collapse_line on the variable-expanded
        rule line after checking for ; and #.

        * job.c (start_job): When there are no more commands, always return 0.
        * commands.c (execute_file_commands): Don't put the new child in the
        `children' chain unless FILE->command_state is cs_running.

        * read.c (read_makefile): Rewrote ;-handling to only do it once (why
        did I do it twice??) and to check for a # before the ;.

        * job.c (start_job): Set CHILD->file->update_status to 0 when we run
        out of commands.  Set it to 1 before returning failure.
        (child_handler): Don't set C->file->update_status to 0 when start_job
        returns success and commands are not running.

        * read.c (read_makefile): If there is a # before the ; for commands,
        forget the ; and commands.

Thu Oct 12 15:48:16 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * job.c (child_execute_job): Pass -c to the shell.

Wed Oct 11 18:41:10 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.56.5.

        * main.c (define_makeflags): Cleaned up to keep better track of dashes
        written, etc.

        * function.c (expand_function: `shell'): When converting newlines to
        spaces in output, search with `index' calls rather than a simple loop.

        * main.c (main): Make sure stdout is line-buffered.

        * main.c (decode_switches): Always check for missing switch arg.

Mon Oct  9 17:17:23 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.56.4.

Sat Oct  7 00:32:25 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (set_file_variables): #ifdef NO_ARCHIVES, still set $@ and
        $%.

        * commands.c (set_file_variables): Include a trailing slash in the
        directory variables (@D, etc.).

        * job.c (child_handler): Call notice_finished_file after changing a
        child's state to `cs_finished'.
        * remake.c (update_file_1): Don't call notice_finished_file if
        FILE->command_state == cs_finished.

Wed Oct  4 16:09:33 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.56.3.

Tue Oct  3 21:09:51 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * read.c (read_all_makefiles): When setting elements of MAKEFILES from
        the contents of read_makefiles, make sure we're using the right
        element.

        * dir.c, glob.c [USGr3 || DIRENT]: Don't define d_ino as d_fileno.

        * Version 3.56.2.

        * remake.c (update_file_1): Return zero after calling remake_file if
        FILE->command_state != cs_finished.  Test update_status thoroughly.

        * commands.c (execute_file_commands): Don't call notice_finished_file.

        * remake.c (remake_file): Return immediately after calling
        execute_file_commands.

Sat Sep 30 14:57:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.56.1 (alpha).

        * file.h (struct file): Made `update_status' not be a bitfield, since
        some broken compilers don't handle it right.

        * function.c (expand_function: `join'): Don't clobber the pointers and
        then try to free them.

        * job.c (exec_command): Fixed & vs = precedence problem.

Thu Sep 28 17:29:56 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * remake.c (update_file_1): Fixed typo in debugging output.

        * remake.c (library_file_mtime): Search for /usr/local/lib/libLIB.a
        after /usr/lib/libLIB.a.

Tue Sep 26 16:07:58 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * read.c (conditional_line): For `ifeq (a, b)', swallow space after the
        comma.

Sun Sep 24 13:25:32 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * function.c (patsubst_function): If BY_WORD and the match is not a
        full word, update the text pointer correctly.

        * function.c (expand_function: `word'): Don't lose track of the second
        arg's expansion and free something else instead.

Fri Sep 22 16:15:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.56.

Thu Sep 21 14:28:42 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * main.c (main): Make an array of the mtimes of the makefiles before
        updating them, and compare their file_mtimes against this later.  Don't
        re-exec if a makefile was successfully updated but didn't change.  If a
        makefile failed to be remade and no longer exists, die.  If a makefile
        failed to be remade, but changed anyway, re-exec.  If a makefile failed
        to be remade, but is unchanged, continue on.

Wed Sep 20 18:02:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.55.6.

        * implicit.c (pattern_search): Maintain an array CHECK_LASTSLASH of the
        CHECK_LASTSLASH flag values used to match each member of TRYRULES.
        When making FILE->stem, if CHECKED_LASTSLASH[FOUNDRULE], prepend the
        part of FILENAME before LASTSLASH.

Tue Sep 19 17:44:08 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * dir.c (dir_file_exists_p): Check for FILENAME being nil before
        checking for it being "".

        * main.c (define_makeflags): Fixed test for whether a flag/flag_off
        option was non-default.  Also changed to generate a string that Unix
        Make will grok (except for FP/int values and new flags).

        * job.c (child_execute_job): Don't use the shell's -c option.
        Also fixed an off-by-one bug in the ARGV -> shell arg list copying.

Mon Sep 18 15:17:31 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.55.5.

        * read.c (parse_file_seq): Check the beginning of the file name for a
        `./', not the two chars after the end of the name (Q rather than P).

        * job.c (child_execute_job): Include all of ARGV in the arg list for
        the shell.

        * main.c (define_makeflags): Don't include floating and positive_int
        options in !PF.

        * job.c (exec_command): Set the effective gid to the real gid before
        execing.

        * job.c (child_execute_job): Don't clobber the arg list when execing
        the shell.

Sun Sep 17 15:27:19 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * main.c (define_makeflags): Moved all the checking inside the switch.

        * load.c [LDAV_BASED] (load_average): When we can't get the load
        average, return zero instead of running off the end.

        * file.c: Include variables.h.
        * job.c: Declare dup2 and {block,unblock}_remote_children.
        * file.h: Declare f_mtime.
        * job.c: Don't declare construct_command_argv, since job.h does.
        * function.c, main.c, load.c, remake.c: Include job.h.
        * load.c [LDAV_BASED] (load_average): Declare nlist.
        * variable.h: Declare print_file_variables.
        * job.c [!USG]: Don't declare sigsetmask.
        [!USG]: Declare getdtablesize.
        Don't declare load_average.  Do declare wait_to_start_job.
        Declare vfork, gete[gu]id, execve.
        * commands.c: Declare remote_kill, getpid.
        * make.h: Declare kill, exit, sigblock, pipe, close, ctime, open,
        lseek, read.
        * make.h [not USG]: Declare sigsetmask.
        * job.h: Declare wait_for_children and {block,unblock}_children.

        * dir.c (dir_file_exists_p): If FILENAME is nil, read in the whole
        directory.
        (find_directory): When we want to read in the whole directory, call
        dir_file_exists_p with nil instead of "".

        * file.h (struct file), job.h (struct child),
          variable.h (struct variable): Use bitfields for flags.
        * make.h (ENUM_BITFIELD): If GCC or #ifdef ENUM_BITFIELDS, define as
        :BITS, else empty.
        * compatMakefile (defines): Document ENUM_BITFIELDS.

Sat Sep 16 12:38:58 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.55.4 (alpha).

        * GNUmakefile (dist): Depend on default and doc.

        * load.c [LDAV_BASED]: Include <nlist.h> rather than <a.out.h>; #ifdef
        NLIST_NAME_UNION, use n_un.n_name instead of n_name.
        * compatMakefile (LOAD_AVG): Document NLIST_NAME_UNION.

        * job.c [USG-ish]: Don't redefine WIF{SIGNALED,EXITED} if they're
        already defined.

Fri Sep 15 13:59:42 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * glob.c, dir.c [USGr3 or DIRENT]: If neither d_ino, nor d_fileno is
        defined, define d_ino as d_fileno.

Thu Sep 14 18:29:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * job.c: Don't declare exec_command static.

        * make.texinfo (Name Index): Changed title to include directives.

        * Version 3.55.3 (alpha).

        * make.texinfo (Running: Options): Document -e.

        * main.c (main): Always give imported environment variables origin
        `o_env'.
        * variable.c (define_variable_in_set): Under -e, if ORIGIN, or an
        existing variable's origin, is `o_env', make it `o_env_override'.

        * load.c: Use the symbol KERNEL_FILE_NAME instead of KERNEL_FILE.
        * compatMakefile: Changed the comment for `LOAD_AVG' accordinly.

Thu Sep  7 16:46:26 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.55.2 (alpha).

        * variable.c (print_variable_set), rule.c (print_rule_data_base),
        file.c (print_file_data_base): If NO_FLOAT is defined, don't use
        floating-point for printing statistics.
        * compatMakefile (defines): Document NO_FLOAT.

        * make.h (HASH): New macro to add the hashing value of one char to a
        variable.c.
        * file.c (lookup_file, enter_file, rename_file): Use it.
        * dir.c (find_directory, dir_file_exists_p, file_impossible_p): Ditto.
        * variable.c (define_variable_in_set, lookup_variable): Same here.

        * variable.c, file.c, dir.c: Don't define *_BUCKETS if they are already
        defined.

        * compatMakefile (defines): Added comment about defining NO_ARCHIVES.
        (ARCHIVES, ARCHIVES_SRC): New variables for {ar,arscan}.[oc].
        (objs, srcs): Use $(ARCHIVES) and $(ARCHIVES_SRC).
        * commands.c (set_file_variables), dir.c (file_exists_p),
        remake.c (touch_file, name_mtime), implicit.c (try_implicit_rule,
        pattern_search), make.h: If NO_ARCHIVES is #defined, don't do any
        archive stuff.

        * commands.c (set_file_variables): Don't kill the last char of
        directory names in $([@*<%?^]D).

Wed Sep  6 15:23:11 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * default.c (default_terminal_rules {%:: %,v}, {%:: RCS/%,v}): Don't
        run co if the target exists.

        * glob.c (glob_match): [!xyz], rather than [^xyz], means none of [xyz].

        * glob.c: Misc minor cosmetic changes.

Tue Sep  5 14:49:56 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

        * load.c [LDAV_BASED] (load_average): Check for == -1, rather than < 0
        to see if lseek fails.  On some systems, `avenrun' is at an offset >
        (2**31)-1, and lseek succeeds, returning a negative value.

Mon Sep  4 11:07:58 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

        * rule.c (new_pattern_rule): Return `int' instead of `void': nonzero if
        the passed rule was used, zero if not.
        (install_pattern_rule): Pay attention to the return from
        new_pattern_rule, and don't set the rule's `terminal' flag or give it
        commands unless it's used.
        (create_pattern_rule): Same idea.

        * dir.c (find_directory): Removed unused variable.

        * commands.c (execute_file_commands): Removed unused variable.

        * read.c (record_files): Don't use NAME after freeing it.

Sat Sep  2 00:33:19 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

        * Version 3.55.1 (alpha).

        * function.c (string_glob): Don't add spaces after file names that
        aren't added.  (Also means don't add spaces without checking the size
        of the buffer.)

        * remake.c (update_goal_chain): Don't remove makefiles with cmds and no
        deps from the chain.
        * main.c (main): Do it here, before calling update_goal_chain.

        * remake.c (update_goal_chain): When updating fails, change STATUS even
        if MAKEFILES is set.  Also stop remaking when updating fails if not
        under -k and MAKEFILES is not set.

        * remake.c (remake_file, update_file_1, notice_finished_file),
        commands.c (execute_file_commands), make.h, commands.h: The functions
        remake_file, notice_finished_file, and execute_file_commands no longer
        return values, and their callers no longer expect values returned.

        * remake.c (notice_finished_file): Don't set FILE's modtime to now if
        it is a non-target with no commands.

Fri Sep  1 00:04:39 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

        * read.c (read_all_makefiles): After freeing each element on MAKEFILES,
        replace it with the name stored in read_makefiles by read_makefile.

        * remake.c (update_file_1): Don't decide not to remake if FILE has no
        cmds and no deps actually changed if FILE doesn't have any deps.

        * file.c (remove_intermediate): Remove precious files that also have
        the `dontcare' flag set.

        * remake.c (update_file_1): Don't always remake if FILE has cmds but no
        deps; only if FILE is double-colon.  (I don't know why this should be
        done for double-colon targets, but that's what Unix make does.)

        * load.c [LDAV_BASED] (load_average): Write error messages if the
        various system calls fail.  Keep track of if we've failed before.
        The first time we fail, write a message saying -l won't be enforced.
        The first time we succeed after having failed, write a message saying
        -l will be enforced again.

        * remake.c [USG]: Don't #include <sys/file.h>

        * load.c [generic Unix LDAV_BASED]: #include <fcntl.h> #ifdef USG,
        else <sys/file.h> instead.

        * job.c [USG && !USGr3 && !HAVE_DUP2]: Remove redundant
        #include <errno.h> and declaration of `errno'.
        [...] (dup2): Fixed so it won't always lose.

        * default.c (default_suffix_rules: .texinfo.dvi): Copy, rather than
        move, the aux and index files, so the TeX run can use them.

        * compatMakefile: Remove redundant comment.

        * load.c [generic Unix LDAV_BASED]: Include <a.out.h> instead of
        <nlist.h>, since the `struct nlist' declaration in <nlist.h> varies
        more than the one in <a.out.h>.
        (load_average): Use the `n_un.n_name' field of the `struct nlist',
        since the <a.out.h> declaration uses the union.

        * main.c (main): For the temporary files made for stdin makefiles, set
        the `intermediate' and `dontcare' flags.
        * file.c (remove_intermediates): Don't print any messages for files
        whose `dontcare' flag is set.  (The only files that will be
        intermediate and `dontcare' will be the temporary files made for stdin
        makefiles.)

        * job.c (exec_command): Made global.
        * job.h: Declare it.
        * main.c (main): Use exec_command when re-execing.

        * make.h: Declare environ.
        * make.c: Don't.

        * job.c (child_execute_job): New function to perform everything done in
        the child side of a fork (for a job or `shell' function).
        (start_job): Call it.
        * job.h: Declare construct_command_argv and child_execute_job.
        * function.c (expand_function: `shell'): Use child_execute_job.

Thu Aug 31 18:42:51 1989  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

        * function.c (expand_function: `shell'): Remove a trailing newline
        instead of turning it into a space.

        * main.c (main): Do init_siglist #ifdef HAVE_SIGLIST.

        * job.c [WTERMSIG || (USG && !HAVE_SYS_WAIT)]: Test each W* macro
        separately and define all those that aren't defined.

Sat Aug 26 15:13:21 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * ar.c (ar_name): Return zero for `(foo)'.

        * Version 3.55.

        * make.texinfo (Rules: Multiple Targets): Make this node's `next'
        pointer point to `Static Pattern'.
        * make.texinfo (Makefiles: MAKEFILES Variable): Make this node's `prev'
        pointer point to `Makefile Names'.

        * make.1: Renamed to make.man.
        * compatMakefile: Define `mandir' and `manext'.
        (install): Depend on $(mandir)/make.$(manext).
        ($(mandir)/make.$(manext)): Depend on make.man and copy it to $@.
        ($(bindir)/make): Use `make' rather than $<; so Unix make can grok it.

Thu Aug 24 03:35:48 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * variable.c (target_environment): Allow variables that start with
        underscores.

Wed Aug 23 22:50:32 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * variable.c (target_environment): Reject variables that don't start
        with letters.

Tue Aug 22 04:14:29 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * GNUmakefile (make-$(version).tar.Z): Put make.1 (the Unix manual
        page) in the tar file.

        * variable.c (target_environment): Don't write variables with origin
        o_default (i.e., ones from default.c).
        * make.texinfo (Commands: Recursion: Variables/Recursion): Document
        that default variables are not put in the environment.

        * remake.c (update_file_1): Remake all targets with commands but no
        deps.

Sat Aug 19 06:03:16 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * remake.c (update_file_1): In the final loop, set the deps'
        `changed' members if they are newer than FILE.

        * remake.c (update_goal_chain): Under -d, print a message if we decide
        not to remake a makefile so as to avoid a possible infinite loop.

Fri Aug 18 20:30:14 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * remake.c (remake_file): Cleaned up.

        * commands.c (execute_file_commands): If the commands are empty, set
        FILE->update_status to zero before returning.

        * remake.c (notice_finished_file): Set `last_mtime' fields to zero
        instead of calling name_mtime; file_mtime will do that later if anybody
        cares.

Thu Aug 17 10:01:11 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * make.texinfo (Rules: Wildcards: Wildcard Examples): Give this node a
        `prev' pointer.

        * Version 3.54.9 (alpha).

        * make.texinfo: Fixed some @nodes.

        * remake.c (check_dep): Don't set *MUST_MAKE_PTR if FILE doesn't exist
        after running update_file.

        * remake.c (notice_finished_file): If FILE has no commands, pretend its
        modtime is now.

        * remake.c (update_file_1): In the loops that call update_file on the
        deps, compare modtimes before and after (unless deps are still being
        made) and set the deps' `changed' members.  Do not set the `changed'
        members in the loop that prints the newer/older debugging messages.
        * remake.c (update_file_1): If no deps changed and FILE has no
        commands, decide it doesn't need remaking.

        * remake.c (update_file_1): Print a debugging message if we take
        commands from default_file.

        * make.texinfo (Rules: Directory Search: Selective Search): Removed
        note about warning for `vpath' with a constant pathname, since it isn't
        warned about anymore.

        * remake.c (update_goal_chain): If MAKEFILES, remove makefiles which
        are targets and have no deps.
        * make.texinfo (Makefiles: Remaking Makefiles): Document that makefiles
        will not be remade if they are targets but have no dependencies.

Tue Aug 15 00:00:08 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

        * remake.c (notice_finished_file): Increment files_remade for non-phony
        files if they didn't exist before (even if they still don't).

        * job.c: Include <errno.h> and declare errno.

        * job.c (exec_command): If the execve fails with ENOEXEC (Exec format
        error), return instead of exiting the child process.

        * job.c (start_job): In the child side, if exec_command fails, try
        using the shell.

        * job.c (start_job): In the child side, call unblock_children instead
        of sigsetmask.

        * remake.c (notice_finished_file): Under -n or -q, always increment
        files_remade for non-phony files.

        * rule.c (intall_pattern_rule): Use find_percent.

        * vpath.c (vpath_search): Pass the `percent' members to
        pattern_matches.

Mon Aug 14 23:30:24 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

        * vpath.c (struct vpath): New member `percent', to hold a pointer into
        the pattern where the % is.
        (construct_vpath_list): Call find_percent on the pattern and set the
        new `percent' member.
        * read.c (read_makefile): Don't run find_percent on `vpath' directive
        patterns.

        * function.c (pattern_matches): Take new arg PERCENT, a pointer into
        PATTERN where the % is.  If PERCENT is nil, copy PATTERN into local
        space and run find_percent on it.
        (expand_function: `filter', `filter-out'): Pass new arg to
        pattern_matches.
        * read.c (record_files): Pass PATTERN_PERCENT to pattern_matches for
        static pattern rules.  Save the percent pointer into implicit rule
        targets, and pass them to create_pattern_rule.
        * rule.c (convert_to_pattern): Pass new arg to create_pattern_rule.
        (create_pattern_rule): Take new arg TARGET_PERCENTS, nil or an array of
        pointers into the corresponding elements of TARGETS, where the %s are.

Sun Aug 13 00:29:19 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * Version 3.54.8.

        * README.templatate, README-doc.template: New files, turned into README
        and README-doc to go into the two distribution tar files.
        * GNUmakefile: Added a rule to edit the version number in
        README.template and README-doc.template, producing README and
        README-doc.

        * remake.c (update_goal_chain): If -n or -q is in effect for a
        makefile, and it got updated, don't change STATUS, so we can still
        return -1 (meaning nothing was done).  This avoids an infinite loop on
        "make -n Makefile".

Sat Aug 12 23:14:24 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * remake.c (notice_finished_file): Treat -q the same as -n.

        * remake.c (update_goal_chain): Fixed handling of return from
        update_file.  If -n or -q is in effect, ignore it.

        * job.c (start_job): Don't test for -t.  We should never get called in
        that case.

Fri Aug 11 04:09:14 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * function.c (expand_function): Removed unused variables.
        (handle_function): Removed unused variable.

        * main.c (main): Removed unused variable.

Wed Aug  9 09:37:10 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * Version 3.54.7.

        * remake.c (notice_finished_file): If FILE's modtime actually changed,
        increment files_remade.
        (remake_file): Don't increment files_remade.

        * remake.c (update_file): Don't print "up to date" messages for
        phony files.

        * job.c (child_handler): Don't set C->file->update_status to 1 if
        start_job returns nonzero under -n or -t.

        * expand.c (variable_expand): Count parens in $(foo:a=b) refs.

        * main.c: Removed old declaration of `glob_tilde' (which hasn't existed
        for a few months).

Tue Aug  8 23:53:43 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * job.c (exec_command): Fixed to not ignore the last path component and
        to do the right thing with an empty path.

Fri Aug  4 15:58:19 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * remake.c (library_file_mtime): Look for libLIB.a, not /libLIB.a.
        Do VPATH search on libLIB.a, not /usr/lib/libLIB.a

Thu Aug  3 20:42:00 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * job.c [HAVE_SYS_WAIT or not USG]: If WIFSIGNALED is not defined by
        <sys/wait.h>, define it as (WTERMSIG != 0).

Tue Aug  1 19:25:34 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * remake.c (remake_file): If FILE has no commands and is a target,
        don't set its time to now.  The time gets reset by notice_finished_file
        anyway, and it isn't needed since check_dep checks for nonexistence.

        * Version 3.54.6.

        * read.c (read_makefile): Don't read off the end of the string after an
        `include'.

        * job.c (exec_command): New function to search the path for a file and
        execute it.
        (start_job): Use exec_command rather than execvp.

        * read.c (read_makefile): Expand `include' directive args before
        parsing them.  Allow trailing whitespace after filename.

        * variable.c (target_environment): Put makelevel + 1, rather than
        makelevel, in the `MAKELEVEL' envariable.

Sat Jul 29 10:27:04 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * remake.c (notice_finished_file): Don't get the new modtime of phony
        files.

        * remake.c (remake_file): Run commands instead of touching under -t if
        FILE->cmds->any_recurse is set.

        * commands.h (struct commands): Add new member `any_recurse', to be set
        nonzero if any `lines_recurse' element is nonzero.
        * commands.c (chop_commands): Set the `any_recurse' member.

        * commands.c (execute_file_commands): Split chopping of commands into
        lines into new function chop_commands.
        * commands.h: Declare chop_commands.

        * read.c (read_makefile): Test for a line beginning with a tab after
        checking for conditional lines, but before all other checks.

Fri Jul 28 18:10:29 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * read.c (read_makefile): Match directives against collapsed line
        and use that for their args.

        * read.c (read_makefile): Warn about extra text after `include'.

Tue Jul 25 14:34:25 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * make.texinfo (Rules: Directory Search: Selective Search): Fixed
        example to use correct `vpath' syntax.

Mon Jul 24 12:10:58 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * Version 3.54.5.

        * job.c (start_job): In the child side, unblock SIGCHLD.

Fri Jul 21 18:25:59 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * make.h: Don't include <sys/types.h> #ifdef sun.

Mon Jul 17 14:29:10 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * implicit.c (pattern_search): If ar_name (FILENAME), don't check for
        directory names.

        * job.c (wait_for_children): Changed "waiting for children" message to
        "waiting for unfinished jobs".

Fri Jul 14 13:17:13 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * load.c (load_average): Use an unsigned offset into kmem.

Thu Jul 13 18:44:49 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * variable.c (pop_variable_scope): Don't free the head of the chain of
        variables in each bucket twice.

Tue Jul 11 06:45:24 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * GNUmakefile: Include COPYING in the doc tar file.

        * variable.c, read.c, misc.c, job.c, function.c: Replace some identical
        "for" loops with next_token or end_of_token calls.

Mon Jul 10 16:55:08 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * Version 3.54.4.

        * compatMakefile: Documented new conditionals.

        * job.c: Don't define sys_siglist if HAVE_SIGLIST is defined.
        Don't define dup2 if HAVE_DUP2 is defined.

        * job.c (child_handler): Interpret the return from start_job correctly.

        * remake.c (update_file_1): Don't write "target not remade because of
        errors" message under -n or -q.

        * read.c: Declare getpwnam.

        * glob.c: Use <dirent.h> if DIRENT is defined.
        [USG]: Don't declare memcpy, since <memory.h> does.

Fri Jul  7 20:53:13 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * misc.c (collapse_line): Copy the line over in the right place.

Fri Jul  7 18:33:24 1989  Roland McGrath    (fsf at void.ai.mit.edu)

        * remake.c: Conditionalize inclusion of <sys/file.h> on not
        USG, since HP-UX defines a `struct file' there.

Fri Jul  7 12:11:30 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * job.c: If WTERMSIG is defined by <sys/wait.h>, define WAIT_T as int,
        and don't define other macros; this covers HP-UX.
        If WTERMSIG is not defined, use int or union wait based on USG and
        HAVE_SYS_WAIT; this covers BSD and SysV.

        * Version 3.54.3 (alpha).

        * job.c [USG and not USGr3]: Include <errno.h> and declare errno.

        * job.c (unblock_children [USG]): Declare child_handler.

        * job.c: Renamed WRETCODE to WEXITSTATUS.
        [HAVE_SYS_WAIT or not USG]: Undefine WTERMSIG, WCOREDUMP, and
        WEXITSTATUS before defining them.  The HP-UX <sys/wait.h> defines them.

        * main.c (main): If there are no goals, fatal AFTER printing the data
        base under -p.

Thu Jul  6 22:43:33 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

        * glob.c [USG]: #define rindex as strrchr.

        * job.c [USG]: Include <sys/param.h> and #define getdtablesize() as
        NOFILE.

Wed Jul  5 09:36:00 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * Version 3.54.2 (alpha).

        * expand.c (variable_expand): When expanding recursive variable
        references (${${a}}), use the correct delimiters in the constructed
        variable reference.

Mon Jul  3 18:29:26 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

        * compatMakefile: Clear out and redefine the .SUFFIXES list because
        silly Sun 4 make defines .cps.h.

        * compatMakefile: Fix comment about -DNO_MINUS_C_MINUS_O.

        * remake.c: Include <sys/file.h> for O_* on 4.2.

        * commands.c: Define sigmask if it's not defined.

Fri Jun 30 07:33:08 1989  Roland McGrath  (roland at apple-gunkies.ai.mit.edu)

        * remake.c (remake_file): Don't always increment files_remade.

        * variable.c (push_new_variable_scope): Zero the new variable hash
        table.

Thu Jun 29 17:14:32 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * expand.c (variable_expand): When terminating the variable expansion
        buffer, use variable_buffer_output instead of a simply zero store,
        because the buffer may need to be enlarged.

Wed Jun 28 16:53:47 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * Version 3.54.

        * default.c (default_suffixes): Added `.ln'.
        (default_suffix_rules): Changed lint rules to use -C.

Thu Jun 22 20:49:35 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * job.c (start_job): Set `environ' to CHILD->environment before execing
        in the child process!

Tue Jun 20 17:23:13 1989  Roland McGrath  (roland at spiff.ai.mit.edu)

        * compatMakefile: Put job.h and rule.h in `srcs'.

        * Version 3.53.

Mon Jun 19 16:25:18 1989  Roland McGrath  (roland at spiff.ai.mit.edu)

        * job.c (start_job): If there are no more commands, return nonzero
        under -n or -t.

        * compatMakefile (make): Pass `-f' to mv.

        * GNUmakefile: If `ARCH' or `machine' is defined, make $(ARCH)/*.o and
        $(ARCH)/make instead of *.o and make.

        * function.c (string_glob): Don't try to use freed storage!

        * read.c (readline): If there is only one byte of space in the buffer,
        enlarge the buffer before reading more.

        * arscan.c [M_XENIX]: Miscellaneous minor changes for Xenix.

Sun Jun 18 13:07:45 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * GNUmakefile (depend): Split commands into two lines so they won't be
        so long when variable-expanded.

        * compatMakefile: Documented MINUS_C_MINUS_O meaning.  The line
        describing it got removed when the USG/wait stuff was documented.

Sat Jun 17 22:56:54 1989  Roland McGrath  (roland at hobbes.ai.mit.edu)

        * Version 3.52.

Mon Jun 12 17:45:11 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * remake.c (check_dep): Drop circular dependencies instead of fataling.
        (update_file_1 already does this.)

        * default.c (default_suffix_rules): For .s -> .o, put the -o flag to
        the assembler before the source file name.

Sun Jun 11 12:00:52 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.51.

        * make.texinfo (Features): Noted 1003.2 requirement of `+' meaning.

        * file.c (remove_intermediates): If !SIG, write a single "rm" command
        line, listing all files.

        * read.c (read_makefile): Don't free the storage for the passed
        filename, since it might not be malloc'd.  When doing an included
        makefile, free the name's storage.
        (read_all_makefiles): Use variable_expand to find the value of
        `MAKEFILES'.  Free the storage for the names of -f makefiles.
        (read_makefile): Allocate storage for the makefile name in the
        `struct file' in read_makefiles.

        * make.texinfo (Running: Instead of Execution): Document the effect of
        + and $(MAKE)/${MAKE}.

        * make.texinfo (Functions: Foreach Function): Document that if the
        iteration variable was undefined before the `foreach' call, it will be
        undefined after the call.

        * commands.c: Split into commands.c, job.h, and job.c.

        * rule.c (try_implicit_rule, pattern_search): Moved to new file
        implicit.c.

        * rule.c: Split into rule.h, rule.c, and default.c.
        * default.c (install_default_pattern_rules): Renamed to
        install_default_implicit_rules.
        * make.h, main.c (main): Renamed uses.

        * make.c: Renamed to misc.c.

        * make.c (main, log_working_directory, decode_switches,
        decode_env_switches, define_makeflags, die, print_version,
        print_data_base): Moved to new file main.c.

        * commands.c (execute_file_commands): Don't collapse backslash-newlines
        here.  When chopping the commands up into lines, don't chop at
        backslash-newlines.
        (start_job): Collapse backslash-newlines after printing the line.

        * commands.c (start_job): Don't collapse backslash-newlines here.
        (execute_file_commands): Collapse backslash-newlines before chopping
        the commands up into lines.

        * commands.c (set_file_variables): Initialize the length counters for
        $^ and $? to zero!

        * commands.c (start_job): Use vfork instead of fork.  Someone else says
        the child and parent DO have separate file descriptors.

        * variable.c: Split internals into variable.c, function expansion into
        function.c, and variable expansion into expand.c.
        * function.c (handle_function): New function to check for a function
        invocation and expand it.
        * expand.c (variable_expand): Use handle_function.
        * variable.c (push_new_variable_scope): New function to push a new
        empty variable set onto the current setlist.
        (pop_variable_scope): New function to pop the topmost set from the
        current setlist and free its storage.
        * function.c (expand_function: `foreach'): Push a new variable scope
        for the iteration variable and pop the scope when finished.
        * variable.h: Declare new functions.
        * variable.c (initialize_variable_output): New function to return a
        pointer to the beginning of the output buffer.
        (save_variable_output): New function to save the variable output state.
        (restore_variable_output): New function to restore it.
        * expand.c (variable_expand): Use initialize_variable_output.
        (allocated_variable_expand): Use {save,restore}_variable_output.
        * variable.c (current_setlist): Renamed to current_variable_set_list
        and made global.

Sat Jun 10 00:11:25 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * remake.c (library_file_mtime): Check for libNAME.a in the current
        directory before doing VPATH search.

        * variable.c (print_variable_set): Don't write "# Variables", and write
        fewer blank lines.
        (print_variable_data_base): Precede the variables with "# Variables".

        * make.c (main): Print the data base under -p after doing everything
        else, just before exitting.  This way it gets info determined in
        updating the goal targets.

        * variable.c (print_variable_data_base): Split into print_variable,
        which prints one variable, and print_variable_set, which prints a set.
        Replaced with a call to print_variable_set for the global set.
        (print_file_variables): New function to print a given file's local
        variables.

        * file.c (print_file_data_base): Call print_file_variables to print
        each file's local variables.

        * commands.c (set_file_variables): Actually define the values for
        the $^ and $? variables!!!

        * make.texinfo (Implicit: Pattern Rules: Automatic): Document new D and
        F versions of $^ and $?.

        * commands.c (start_job): In the child fork, use getdtablesize and a
        loop to close all file descriptors other than 0, 1, and 2.  We need to
        do this since not only the bad stdin pipe, but also some directories,
        may be open.

        * commands.c (start_job): Use fork instead of vfork, because a vfork
        parent and child share file descriptors, and our child needs to diddle
        with stdin.

        * variable.c (initialize_file_variables): When created a new variable
        set, zero out the hash table.

        * variable.c (target_environment): Don't use variables whose names are
        not made up of alphanumerics and underscores.

        * remake.c (update_file_1): Set the `parent' member of each dependency
        to FILE before updating it.

        * file.h (struct file): Add `parent' member.

        * variable.c (initialize_file_variables): Don't take second arg PARENT.
        Use FILE->parent instead.  If FILE->parent->variables is nil, recurse
        to initialize it.

        * variable.h: Declare {allocated_}variable_expand_for_file.

        * variable.c (allocated_variable_expand): Now
        allocated_variable_expand_for_file, calling variable_expand_for_file,
        and taking second arg FILE.
        (allocated_variable_expand): New function, a wrapper around
        allocated_variable_expand_for_file, passing a nil second arg.

Fri Jun  9 12:11:45 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (start_job): On the child side of the fork, always close
        the bad stdin file descriptor.

        * commands.c (struct child): New member `environment', to hold the
        environment for the child.
        (execute_file_commands): Set the new childs `environment' member to nil
        before calling start_job.
        (start_job): Set up CHILD->environment before running the commands if
        it is nil.

        * make.c (main): Don't call new_environ.  `shell' functions will now be
        run with the environment make was called with.

        * commands.c (child_handler): Don't check C->command_ptr before calling
        start_job since we now have to check C->file->cmds->command_lines and
        it's easier to let start_job handle all that.

        * commands.c (struct child): New member `command_line', to hold an
        index into file->cmds->command_lines.
        (execute_file_commands): Set the new child's `command_line' to 0 and
        its `commands' and `commands_ptr' to nil.
        (start_job): When CHILD->command_ptr runs out, increment
        CHILD->command_line and run the corresponding line from
        CHILD->file->cmds->command_lines.  Run it even under -t, -q, or -n if
        the CHILD->file->cmds->lines_recurse element for that line is set.

        * commands.c (execute_file_commands): Chop CMDS up into lines, setting
        its `command_lines' and `lines_recurse' members, if it wasn't already
        chopped.

        * commands.h (struct commands): New members `command_lines' and
        `lines_recurse'.  The first is an array of chopped-up lines; the second
        is an array of flags, each nonzero if the corresponding line is
        recursive.

        * variable.c (variable_expand_for_file): If FILE is nil, just do a
        vanilla variable_expand.
        (expand_function: `shell'): Pass second arg (as nil) to
        construct_command_argv.

        * commands.c (construct_command_argv): Use variable_expand_for_file on
        `$(SHELL)' and `$(IFS)' instead of lookup_variable to check those
        variables.  This handles file-local and recursive values correctly.
        To support this, take an additional argument FILE.

        * variable.c (initialize_file_variables): New function to initialize
        FILE's variable set list from PARENT's setlist.  PARENT is the
        immediate dependent that caused FILE to be remade, or nil if FILE is a
        goal.  (When user-level per-file variables are implemented, PARENT
        should be passed as nil when defining per-file variables.)

        * variable.c (variable_expand_for_file): New function to expand a line
        using the variable set of a given file, and reporting error messages
        for the file and line number of that file's commands.

        * variable.h: Don't declare lookup_variable_for_file.

        * variable.c (lookup_variable_*): Turned back into lookup_variable.  It
        now uses current_setlist.
        (global_setlist): New static `struct variable_set_list', a setlist
        containing global_variable_set.
        (current_setlist): New static `struct variable_set_list *', a pointer
        to the current variable set list.
        (define_variable): Define in the current top-level set, not the global
        set.

        * commands.c (set_file_variables): New function to set up the automatic
        variables for a file in its own variable set.
        (execute_file_commands): Use set_file_variables.

        * variable.c (new_environ): Replaced with target_environment, taking an
        argument FILE, and returning an environment for FILE's commands.

        * variable.c, variable.h: Remove all global special variable pointers.

        * variable.c (define_variable_for_file): New function like
        define_variable, but takes additional arg FILE, and defines the
        variable in the variable set at the top of FILE's chain.
        (lookup_variable_for_file): New function like lookup_variable, but
        takes additional arg FILE, and looks the variable up in all of FILE's
        variable sets.

        * file.h (struct file): New member `variables', a `struct
        variable_set_list' containing the list of variable sets used in the
        expansion of the file's commands.

        * variable.c (variables): Replaced with static `struct variable_set'
        global_variable_set.
        (define_variable): Now define_variable_in_set, taking additional
        argument SET, the `struct variable_set' to define it in.
        (define_variable): Use define_variable_in_set with global_variable_set.
        (lookup_variable): Now lookup_variable_in_set, taking additional
        argument SET, the `struct variable_set' to look it up in.
        (lookup_variable): Use lookup_variable_in_set with global_variable_set.
        (lookup_variable_in_setlist): New function to look up a variable in a
        `struct variable_set_list' using lookup_variable_in_set.

        * variable.h (struct variable_set): New structure, containing a hash
        table and the number of hash buckets.
        (struct variable_set_list): New structure, containing a link for a
        linked-list, and a `struct variable_set'.

        * commands.c (start_job): Under -n, return what the recursive start_job
        call returns, since it might actually start a child.

        * make.texinfo (Rules: Wildcards): Document ~ and ~USER expansion.

        * commands.c (execute_file_commands): If start_job returns
        failure, but -t is set, set FILE->update_status to success.
        (start_job): If -t is set, and the commands are not recursive, return
        failure (is is done for -q).

        * remake.c (touch_file): New function to touch FILE.
        (remake_file): Use touch_file.  When touching a file, still do
        execute_file_commands.

        * remake.c (remake_file): Don't check question_flag (-q), since we
        can't know here if the commands are recursive.

        * commands.c (start_job): Don't use the `recursive' member of
        CHILD->file->cmds.  Instead, check for leading +s and $(MAKE) or
        ${MAKE} in the command line here.

        * commands.h (struct commands): Remove `recursive' member.

        * rule.c (install_default_pattern_rules): Remove use of `recursive'
        member.

        * read.c (record_files): Don't check commands from $(MAKE) and set
        their `recursive' member.

        * commands.c (fatal_error_signal): Treat SIGQUIT like SIGINT, SIGHUP,
        and SIGTERM, but don't send it to ourselves because it will cause a
        core dump.

Thu Jun  8 20:30:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.50.

        * variable.c (variable_expand): Use allocated_variable_expand instead
        of expand_argument in a few places.

        * variable.c (allocated_variable_expand): Do static variable shuffling
        here instead of using expand_argument.
        (expand_argument): Use allocated_variable_expand.

        * variable.c (recursively_expand): New function to recursively expand
        its argument (a `struct variable'), returning the malloc'd value.
        (variable_expand): Use recursively_expand.

Sun May 28 12:49:27 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (main): Fixed buggy fix in deciding to increase space for
        command-line variable definitions.  (First it never did it, then it
        always did it; now it does it when necessary.)

Sat May 27 14:01:54 1989  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

        * make.c (main): Fixed bug in deciding to increase space for
        command-line variable definitions.

Fri May 26 15:48:01 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * read.c (multi_glob): Use allocated_expand_variable for checking
        `HOME' variable for ~ expansion, since this may be called from inside a
        `wildcard' function expansion.

        * variable.h: Declare allocated_expand_variable.

        * variable.c (allocated_expand_variable): New function to do variable
        expansion in an allocated buffer, rather than the static one.

        * make.c (main): Don't set glob_tilde (it no longer exists).

        * variable.c (string_glob): Use multi_glob and parse_file_seq.

        * read.c (multi_glob): Do ~ expansion here.

        * glob.c (glob_tilde, glob_filename): Removed ~ expansion.

        * variable.c (define_variable, lookup_variable): Use a smarter hashing
        algorithm (the same one used for files and directories).
        (VARIABLE_BUCKETS): Increased to 523.

        * file.c (enter_file, lookup_file, rename_file): Use a smarter hashing
        algorithm, spreading the bits about somewhat.

        * make.c (log_working_directory): Under `-p', precede the directory
        message with a `#'.

        * make.c (print_version): Under `-p', precede each line with a `#'.
        (print_data_base): Precede the header line with a `#' and include the
        date and time on it.

        * vpath.c (print_vpath_data_base): Precede non-directive
        lines with `#'s.

        * commands.c (print_commands): Precede the non-command line with a `#'.

        * rule.c (print_rule_data_base), file.c (print_file_data_base): Precede
        non-rule lines with `#'s.

        * dir.c (print_dir_data_base): Precede all lines with `#'s.

        * variable.c (print_variable_data_base): Changed format so that it can
        be makefile input.  Lines that are not variable definitions are
        preceded with `#'.  Nonrecursive variable definitions are made with all
        dollar signs doubled to reproduce the initial value.  Recursive
        variable definitions containing newlines are done with `define'
        directives.  Nonrecursive variable definitions containing newlines, and
        variable names containing :, =, or newlines, will come out garbled.

Wed May 24 00:20:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.49.

Tue May 23 19:18:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * variable.c (expand_function: `filter'/`filter-out'): Use
        find_percent instead of pattern_p.

        * variable.c (expand_function: `patsubst'): Pass new args (both nil)
        to patsubst_expand.
        (variable_expand): For $(var:pat%=rep%) references, pass new args to
        patsubst_expand so as to avoid find_percent and thus disallow
        quoting the %s.

        * read.c (record_files): Pass new args to patsubst_expand.

        * variable.c (patsubst_expand): Take two new args: PATTERN_PERCENT
        and REPLACE_PERCENT.  Each of these, if non-nil, means that PATTERN
        (or REPLACE) has already been run through find_percent, and
        PATTERN_PERCENT (or REPLACE_PERCENT) is the result.

        * make.h: Declare find_percent instead of pattern_p.

        * read.c (pattern_p): Changed to find_percent, returning a pointer
        to the %, or nil if there is none.
        (record_files): Take another arg, PATTERN_PERCENT, a pointer to the
        % in PATTERN.
        (read_makefile): Pass PATTERN_PERCENT to record_files.

        * make.texinfo (Rules: Static Pattern: Static Usage,
        Rules: Directory Search: Selective Search,
        Functions: Text Functions): Documented that `%' can be quoted.

        * variable.c (expand_function: `filter'/`filter-out'): Use pattern_p
        to allow quoted %s in patterns.

        * variable.c (patsubst_expand): Use pattern_p on PATTERN and REPLACE
        to allow quoted %s.  Quoting backslashes are removed from REPLACE
        even if PATTERN contains no unquoted %.

        * read.c (pattern_p): Made global.
        * make.h: Declare pattern_p.

        * read.c (pattern_p): New function to search for an unquoted % in a
        string.  Backslashes quote %s and backslashes.  Quoting backslashes
        are removed from the string by compacting it into itself.  Returns
        nonzero if an unquoted % was found, zero if not.
        (record_files): Use pattern_p to check for implicit rules.
        (read_makefile): Use pattern_p to check for static pattern rules.
        Also use it to allow quoted %s in `vpath' patterns; warn about
        `vpath' patterns with no %s.

Mon May 22 16:31:52 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * glob.c (glob_filename): Replace a `1' with the `l' that should
        have been there.  This incidentally stops it from dumping core.

        * glob.c (glob_filename): If the path is just a directory, with no
        file name pattern, return the directory alone.

        * glob.c (glob_tilde): New global variable (int), defaults to zero.
        (glob_filename): If glob_tilde is nonzero, expand ~ or ~USER.

        * variable.c (string_glob): Keep a static allocated buffer for file
        names taken from the list, instead of allocating and freeing one
        every time.

Fri May 19 18:06:26 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * make.c (decode_switches): Get floating numbers from the right string.

Sun May 14 13:48:04 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * commands.c (delete_child_targets): When deleting `also_make'
        files, include the target's name in the message:
                make: *** [foo] Deleting file `bar'

Sat May 13 17:34:26 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (max_load_average, default_load_average): Default to -1.

        * load.c (wait_to_start_job): Return if max_load_average is < 0.0,
        not equal.

Fri May 12 16:08:05 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * variable.c (variable_buffer_output): Don't try to do pointer
        arithmetic between objects not in the same array.

Wed May 10 15:55:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * rule.c [M_XENIX] (default_suffix_rules, default_variables): Minor
        changes to allow for strange compiler syntax.

        * rule.c (default_variables): Don't include "> $@" in
        $(PREPROCESS.S), since it's already in the .S.s rule.

        * file.c (enter_file): Make a new double-colon file the `prev'
        member of the bottom `prev' file (the one whose `prev' is nil).

        * read.c (do_define): Append newlines after copying the lines into
        the value buffer, so we end up with a trailing newline.

        * make.c (print_version): If the global variable
        `remote_description' is not nil or "", append "-%s" (its value) to
        the version number.
        * remote-*.c: Define remote_description appropriately.

Sun May  7 15:15:53 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (error_status): Converted to new function child_error,
        taking new arguments TARGET_NAME and IGNORED, and writing an error
        message: "*** [target] Error 1" (or signal #, etc.), appending
        " (ignored)" if IGNORED is nonzero.
        (child_handler): Use child_error instead of error_status.

        * compatMakefile (all): Don't depend on `doc'.

        * compatMakefile (clean): Don't remove make-info*.
        (realclean): New rule, depends on `clean', removes tags, TAGS,
        and all Info and TeX files.

Thu May  4 17:00:46 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * variable.c (print_variable_data_base), file.c
        (print_file_data_base), rule.c (print_rule_data_base),
        Use floating-point for averages and percentages.

        * make.c (print_data_base): Print messages before and after the data
        base information.

        * commands.c (print_commands): Changed output format to separate
        lines in commands and prefix them with tabs.

        * dir.c (print_dir_data_base): Changed output format slightly.

        * vpath.c (struct vpath, construct_vpath_list,
        selective_vpath_search): Remove the `exists' member and its uses.

        * vpath.c (print_vpath_data_base): New function to print all
        selective and general VPATH search paths (for -p).

        * make.c (print_data_base): Call print_vpath_data_base.

        * file.c (print_file_data_base): Changed format to look more like a
        makefile rule.  Now reports all information in the `struct file'.

        * rule.c (print_rule_data_base): Changed format of display from:
          %: (terminal)
           depends on: RCS/%,v
        to:
          %: RCS/%,v
            is terminal.
            references nonexistent subdirectory.
        Also include number and percent that refer to nonexistent
        subdirectories.

Thu Apr 27 15:45:40 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * make.c (main): Figure out the level of recursion before writing
        the `Entering directory' message.
        * variable.c (define_automatic_variables): Don't figure out the
        level of recursion from `MAKELEVEL'.  It's now done in main.

        * Version 3.48.

Wed Apr 26 16:39:17 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (child_handler): Set `update_status' to zero when there
        are no more commands.

        * make.c (log_working_directory): If MAKELEVEL > 0, indicate the
        recurson in the message (make[1]: ...).

        * commands.c (child_handler): Change status to `cs_finished' when
        commands fail.

        * commands.c (start_job): Return 0 (success) if there were no more
        commands for the child.
        (child_handler): Change the status to `cs_finished' when start_job
        fails to start the commands.

        * make.c (main): Don't handle SIGEMT if it's not defined.
        Do handle SIGDANGER if it is defined.

        * commands.c (child_handler): Reorganized inner loop so that it
        doesn't try to inspect the child before finding it.

Tue Apr 25 16:28:24 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * make.c (end_of_token): Fixed bug wherein backslashes caused
        immediate return.

        * Version 3.47.

        * make.texinfo (Implicit: Pattern Rules: Automatic): Document
        setting of `$*' for explicit rules.  Add note clarifying that
        automatic variables, though referred to in the documentation as
        `$<', etc. are no different than `$(<)', etc.

Fri Apr 21 18:00:12 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * file.c (enter_file): Don't strip leading `./'s.

        * read.c (parse_file_seq): Strip leading `./'s.

Thu Apr 13 17:26:41 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * make.texinfo (Commands: Parallel, Running: Options): Document that
        -l with no argument removes a previous load limit.

        * make.c (struct command_switch): New member `default_value'.
        (default_job_slots): Default value (of 1) for -j.
        (default_load_average): Default value (of 0, unlimited) for -l.
        (command_switches): Use default values for -j and -l.
        Also, -l without an arg now means no load limit.
        (define_makeflags): Don't write positive_int or floating options
        whose values are their defaults.

        * make.c (main): Under -w, write a `Leaving directory' message
        before re-execing.

Tue Apr 11 16:46:29 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.46.

        * Makefile: Provide an easy place for system-specific definitions
        (-DUSG, etc.) and extra object files (for whatever).

        * make.texinfo: Miscellaneous fixes from RMS.

Mon Apr 10 19:31:34 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * rule.c (pattern_search): Put rules with `subdir' flags set in
        TRYRULES, since these might be valid with VPATHs.  In the TRYRULES
        loop, don't do lookup_file or file_exists_p calls for dependencies
        of rules with `subdir' flags set, but still do vpath_search calls
        and intermediate-file searches.

Thu Apr  6 16:33:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * make.texinfo (Implicit: Pattern Rules: Automatic): Document the
        new definition of $* for explicit rules.

        * commands.c (execute_file_commands): If FILE->stem is nil, figure
        out if FILE->name ends in a suffix in the .SUFFIXES list; if so,
        store the name sans suffix in FILE->stem (and $*).

Wed Apr  5 15:24:48 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * file.c (remove_intermediates): Don't use `file_exists_p' to check
        for the existence of intermediate files, because the hashed
        directories will probably be out of date.

        * commands.c (child_handler): Free the good stdin before running the
        next command line.

        * commands.c [USG] (init_siglist): Don't case SIGEMT if it's not
        defined.  Do case SIGDANGER (for IBM RT) if it is defined.

        * commands.c: Changed `SYS_WAIT' to `HAVE_SYS_WAIT'.
        (child_handler): Use `wait3' if HAVE_SYS_WAIT is #defined.

        * file.c (enter_file): If any `./'s are stripped off, allocate a new
        copy of the shortened name.

        * rule.c (pattern_search): Allocate the right length strings for
        `also_make' members.

Sat Apr  1 13:28:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.45.

        * GNUmakefile: Make a separate tarfile of the DVI and info files.

        * make.c (define_makeflags): If a switch that takes an argument has
        its default value, put the switch in MAKEFLAGS with no arguments.

        * make.c (command_switches): Pass `-l' in MAKEFLAGS.

Wed Mar 29 17:50:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * GNUmakefile: Don't include the DVI and info files in the dist.

        * commands.c (child_handler): Don't call
        check_changed_{directories,vpaths}.

        * make.h: Don't declare check_changed_{directories,vpaths}.

        * vpath.c (check_changed_vpaths): Removed this function.

        * dir.c (struct directory): Remove `modtime' member.
        (find_directory): Don't set `modtime' member.
        (check_changed_directories): Removed this function.

        * remake.c (update_file_1): Set FILE->command_state to cs_finished
        if it didn't need to be remade.

        * remake.c (update_file): Only write the "up to date" message if the
        target went from `not_started' state to `finished' state without
        incrementing the count of files remade.

        * commands.c [USG] (init_siglist): If both SIGCHLD and SIGCLD are
        defined, don't put them both in the `switch'.

Tue Mar 28 15:37:02 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * file.c (rename_file): Change FILE's name!!!

        * rule.c (create_pattern_rule): Set the `terminal' member of the new
        rule after calling new_pattern_rule, which zeros it.

        * rule.c (default_variables): Use $(C++) in $(COMPILE.cc)!

Sun Mar 26 15:52:30 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Makefile: Added a `clean' target.

Fri Mar 24 15:08:46 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * Version 3.44.

        * file.c (rename_file): If a `struct file' for the renamed-to name
        exists, and it is a target or has deps or commands, barf.
        If not just remove the old one for put in the new one.

        * remake.c (update_file_1, check_dep): Changed it back so that equal
        modtimes to NOT make dependencies be considered newer.  RCS checks
        out files with equal modtimes as the RCS files, so this screws it.

        * make.h, glob.c: If __GNUC__ is defined, use __builtin_alloca.

        * Makefile: Use variables `ALLOCA' and `ALLOCASRC' so systems
        without a good standard alloca can get it from the Emacs
        distribution (or somewhere).

        * dir.c: Don't include <sys/stat.h>, since make.h does.

        * make.c: Removed debugging version of getwd.

Thu Mar 23 16:16:27 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.43.

        * remake.c (update_file_1): If a dependency loop is found, don't
        fatal.  Emit an error message and remove the dependency.

        * remake.c (library_file_mtime): Fixed to use the right names.
        (update_file_1, check_dep): Consider a dependency "newer" than its
        dependent if they have the same modification time.

Wed Mar 22 19:31:35 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * file.c (remove_intermediates): Don't try to remove nonexistent files.

Mon Mar 20 10:21:22 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.42.

        * rule.c (default_variables): Set F77 to $(FC) and F77FLAGS to
        $(FFLAGS) so explicit rules expecting these (which are in System V)
        will work.  However, there is no way to make setting these affect
        the implicit rules, unless we trash FC and FFLAGS (which BSD uses).
        [USG]: Set GET to `get' rather than `/usr/sccs/get'.

Sun Mar 19 20:00:27 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * vpath.c (construct_vpath_list): Don't replace VPATH[ELEM] with
        dir_name (V), because the latter may get freed.

Sat Mar 18 15:01:39 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.41.

        * make.texinfo: Cleaned-up edition 0.1 Beta from RMS and Bob Chassell.

        * file.c (rename_file): If a file with the new name already existed,
        use the same storage space, after freeing the old file's name, deps,
        and `also_make' member, preserving the link in the chain.
        Also write an error message telling the user to report the incident;
        I don't think this should be able to happen, but I'm not sure.

        * file.c (rename_file): Don't add the hash values of the old and new
        names together!  Reset HASHVAL before computing the second value.

        * dir.c (check_changed_directories): Zero the new file hash table
        after allocating it.

        * dir.c (dir_file_exists_p): If FILENAME is "", return 1 if the
        directory exists.

        * vpath.c (check_changed_vpaths): New function to run through the
        search paths of all VPATHs, making the `exists' members correspond
        to reality.

        * commands.c (child_handler): Call check_changed_vpaths.

        * make.h: Declare check_changed_vpaths.

        * vpath.c (struct vpath): New element `exists', an array of char
        flags; exists[N] is nonzero if searchpath[N] exists.
        (construct_vpath_list): Set the `exists' member.
        (selective_vpath_search): Don't search directories whose `exists'
        elements are zero.

        * read.c (read_makefile): Set the `dontcare' flag of makefiles
        from the MAKEFILES variable if they were not mentioned anywhere but
        in the MAKEFILES variable.

        * read.c (read_makefile): Don't write an error message if fopen
        fails for a makefile from the MAKEFILES variable.

        * dir.c (struct directory): Add `modtime' member to record the
        modification time of the directory when it was opened.
        (check_changed_directories): New function to check all known
        directories; if their modtimes have changed since they were opened,
        their file tables are cleared and they are reset to be read in.

        * commands.c (child_handler): Call check_changed_directories before
        returning.
        make.h: Declare check_changed_directories.

Tue Mar 14 20:07:13 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.40.

        * make.c (print_version): Made the copyright say 1988, 1989.

        * read.c (read_all_makefiles): Don't set *MAKEFILES to the name of
        the end of the read_makefiles chain, since the latter may be from an
        included makefile.  (Why did I do this before?)

        * make.c (main): Set argv[0] to "" if it was nil.  Don't put the
        command-line variable definitions into argv[0], only into the MAKE
        variable!

Sun Mar  5 20:44:08 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * ar.c (ar_member_date, ar_touch): Remove the trailing ) from the
        member name.

Fri Mar  3 18:15:15 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (construct_command_argv): Initialize NEW_ARGV to 0.  At
        `slow' label, if NEW_ARGV is not 0, free it; then allocate 4 strings.

Tue Feb 28 14:29:39 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.39.

        * COPYING, make.texinfo: New GNU General Public License, version 1.

        * *.c, *.h, Makefile: New copyright notices for the new GNU General
        Public License, version 1.

        * commands.c [USG]: Define WRETCODE correctly (again).

        * variable.c (expand_function: `shell'): Don't capture the standard
        error output of the shell command.

        * ar.c (ar_touch, ar_member_date): Allocate MEMNAME with the right
        length.

        * load.c [not UMAX] (load_average): Don't clobber the first nlist
        member when trying to set the second!

Thu Feb 23 13:13:53 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * commands.c (child_handler): Really ignore errors under -i and for
        - lines, don't just print a different message.

        * make.c (decode_switches): Fixed handling of arguments (or lack
        thereof) to switches.

Wed Feb 22 16:25:39 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * commands.c (construct_command_argv): Don't clobber LINE when
        checking the IFS variable.

Sun Feb 19 11:17:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * load.c [UMAX, not NO_LDAV] (load_average): Return 0.0 rather than
        randomness when calls fail.

        * Version 3.38.

        * commands.c (fatal_error_signal): If handling a user kill signal
        (TERM, INT, HUP), wait for the children without printing the
        "Waiting for children" message, since they will die quickly.

        * Version 3.37.

        * remote-stub.c (remote_status): Take another arg, BLOCK.  If this
        is nonzero block waiting for remote children.  If not, return 0 if
        we would have to block.

        * commands.c (child_handler) [not USG]: If called as a signal
        handler, use wait3 and don't block.
        [USG]: If called as a signal handler, return after handling one child.

Sat Feb 18 13:37:04 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * file.c (snap_deps): Process all double-colon entries of each file,
        not just the first one.

        * Version 3.36.

        * remote-stub.c: remote.c renamed.
        remote.c: Just include remote-stub.c

        * commands.c (child_handler): If we were called as a signal handler,
        return after handling one child.

        * commands.c [not USG]: Include <signal.h> and define `sigmask' if
        <signal.h> doesn't.
        (block_children, unblock_children): Use sigmask rather than
        bitshifting explicitly (and incorrectly).

        * remote.c (remote_kill): New function to send a signal to a
        remote child.

        * commands.c (fatal_error_signal): If we get a SIGTERM, send one to
        each living child.  If we get a SIGTERM, SIGINT, or SIGHUP, delete
        all pending targets before waiting for children.
        (struct child): Add new member `deleted'.
        (start_job): Initialize `deleted' member to 0.
        (delete_child_targets): New function to delete a given child's
        targets, unless the `deleted' flag in the `struct child' says they
        have already been deleted.  Sets this flag before returning.

Thu Feb 16 18:32:07 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c [USG]: Define `WRETCODE' correctly (X & 0xff00).

Tue Feb 14 16:05:00 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (construct_command_argv): Don't make the 0th element of
        the argument list be "sh" when executing /bin/sh, because start_job
        uses the 0th element as the program name.

Sun Feb 12 17:42:05 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.35.

        * read.c (readline): Put a null in the beginning of the buffer
        before starting the reading loop.

        * read.c (read_makefile): Made main reading loop while
        !feof (infile), and removed EOF check after calling readline.

Sun Feb  5 19:52:38 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * remote.c (block_remote_children, unblock_remote_children): New
        (stub) functions to block and restore asynchronous notification of
        remote child death.

        * commands.c (block_children): Call block_remote_children.
        (unblock_children): Call unblock_remote_children.
        (child_handler): If called as a signal handler, block remote
        children on entry and unblock them before returning.

        * commands.c (child_handler): For unknown children, if they are
        remote, give their remote ID; if local, give their PID and make's.

        * commands.c (execute_file_command): Don't put a new child in the
        chain unless start_job succeeds.  Block children before calling
        start_job, and unblock them after putting the child in the chain and
        incrementing `job_slots_used' (if start_job succeeded).

        * commands.c (block_children, unblock_children): Make these globally
        visible (not `static').
        commands.h: Declare block_children and unblock_children.

        * variable.c (expand_function: `shell'): Use
        `shell_function_completed'.  Block children before forking and
        unblock after `shell_function_pid' is set properly and
        `shell_functon_completed' is reset to 0.

        * commands.c (child_handler): When the child of the `shell' function
        completes, set `shell_function_completed' to 1 if it actually ran,
        or -1 if it didn't (due to fork or exec failure).

        * commands.c (block_children, unblock_children): New functions to
        block and unblock the child termination signal.
        (wait_for_children): Use block_children and unblock_children.
        (execute_file_commands): Block children around the critical section
        wherein a new child is put on the chain.

        * make.c (main): Change the environment to contain the correct
        MAKELEVEL before re-execing.

Sat Feb  4 18:28:48 1989  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.34.

Fri Feb  3 16:36:49 1989  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * rule.c (default_variables): Fixed $(LINK.c).

Wed Feb  1 18:05:07 1989  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

        * Version 3.33.

        * version.c: Removed copyright notice, since this is a one-line file.

        * commands.c (error_status): Made it return BUF, rather than running
        off the end (this apparently worked on Sun 3s for some reason).

        * ar.c, commands.c, dep.h, load.c, make.c, make.h, read.c, remake.c,
        rule.c, variable.c, Makefile: Changed copyrght notices to cover 1989.

Mon Jan 30 15:51:28 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.32.

Fri Jan 27 20:09:24 1989  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * remake.c (remake_file): Don't touch phony targets.

        * rule.c (convert_to_pattern): Fixed an incorrect length passed to
        savestring.

        * variable.c (expand_function: `shell'): Close the read side of the
        pipe on the parent side of the fork.

        * commands.c (start_job): On the child of the fork, close the
        BAD_STDIN fd if we're not using it.

        * read.c (record_files): A file beginning with a dot can be a
        default target if it also contains a slash (as in `../foo').

        * commands.c (wait_for_children): For BSD, block SIGCHLD rather than
        ignoring it to avoid a race condition when child_handler is returning.

        * commands.c (child_handler): Do blocking waits.
        (error_status): Return a string describing exit status.  (Split out
        of child_handler).

        * read.c (multi_glob): Change VECTOR to VEC for Alliant.

Thu Jan  5 00:06:51 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.31.

        * make.texinfo (Features): Noted $(foo:PAT=SUB) from SunOS 4.0.

        * make.texinfo (Options/Recursion): -d and -p go in the environment.

        * load.c: Include "commands.h".

Wed Jan  4 17:49:25 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * make.c (switches): -d and -p can come from the environment and are
        put into it.

        * read.c (record_files): Fixed the checking for duplicate deps so it
        doesn't clobber the first one.

        * make.texinfo: Documented default implicit rule changes.

        * rule.c: Revamped default suffix rules.  They now use Sun's style
        of using variables `COMPILE.c', `LINK.c', etc. for each suffix, and
        use `TARGET_ARCH' and `TARGET_MACH' variable where appropriate.
        Also support Modula-2 compilation (suffixes .sym, .def, and .mod).
        Ratfor Yacc support is gone, since nobody has yacc -r.
        All EFL support is gone, since nobody uses EFL.

        * ar.c, arscan.c: Don't assume `long int' and `int' are the same.

        * commands.c [USG]: Fixed wait status bit encoding.
        [USG and not USGr3] (dup2): Define this for SysVr2.

        * make.h, dep.h, make.c [iAPX286]: Make allowances for this
        brain-damaged compiler.

        * make.texinfo (Variables: Flavors): Fixed a typo.

Tue Jan  3 18:09:31 1989  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * ar.c (ar_member_date, ar_touch): Truncate member names to 15 chars.

        * Version 3.30.

        * commands.c [SYS_WAIT]: If this is defined, use BSD <sys/wait.h>
        and wait3 even if USG.

        * read.c (record_files): Defining .DEFAULT with no deps or commands
        clears its commands.

        * rule.c (default_suffixes): Added `.sh'.
        (default_suffix_rules): Added single-suffix .sh rule, copies source
        to target and makes target executable.
        make.texinfo (Catalogue of Rules): Documented .sh rule and its use
        in conjunction with SCCS.

        * rule.c (set_default_suffixes): Define variable `SUFFIXES' to the
        default list ("" under -r).
        make.texinfo (Suffix Rules): Document `SUFFIXES' variable.

        * rule.c (default_variables), make.texinfo (Implicit Variables):
        Variable AR defaults to `ar', ARFLAGS to `rv', and RM to `rm -f'.

        * rule.c (install_default_pattern_rules): Default variables are made
        recursive.
        (default_variables): Added "CPP", defined to "$(CC) -E".
        (default_suffixes): Added `.S', before `.s'.
        (default_suffix_rules): New rule for .S to .s, runs CPP.
        All rules that use CPP now include "$(CPPFLAGS)".
        make.texinfo (Catalogue of Implicit Rules, Implicit Variables):
        Documented above changes.

        * commands.c [USG] (sys_siglist): Don't define.
        [USG] (init_siglist): New function to initialize sys_siglist.

        * make.texinfo (Variables: Reference): Documented `$(foo:PAT=SUB)'
        references.

        * variable.c (variable_expand): A reference `$(foo:PAT=SUB)' is
        equivalent to `$(patsubst PAT,SUB,$(foo))'.

        * variable.c (variable_expand): Free the storage for the expansion
        of a recursive variable when it is nod longer needed.

        * variable.c (variable_expand): When checking for `$($(foo))', use
        lindex so as not to search for the second `$' outside the parens.

        * make.c (struct stringlist, main, decode_switches): Changed `index'
        member to `idx'.

Sat Dec 24 16:02:32 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (wait_for_children [USG]): Handle SIGCLD with SIG_DFL,
        rather than SIG_IGN.  Ignoring SIGCLD reportedly makes wait return -1.

        * arscan.c [USGr3]: Define PORTAR to 1 (as with sun386).
        (ar_scan [USGr3]): Remove trailing slashes from member names.

Thu Dec 22 17:54:05 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * make.texinfo (Makefiles: Overriding Makefiles): New node
        documenting use of .DEFAULT to have one makefile defer unmakeable
        targets to another.

        * make.texinfo (Implicit: Using Implicit, Implicit: Last Resort):
        Mention empty commands and xref node `Empty Commands'.

Wed Dec 21 20:12:40 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.29.

        * make.c (struct command_switch, command_switches, et al): New
        member `noarg_value', if not nil, ptr to value to use if no arg is
        given to a switch that would otherwise require one.  The -j option
        can now be given w/o an arg, to mean infinite jobs.
        * commands.c: If job_slots is zero, infinite jobs.

        * read.c (read_all_makefiles, read_makefile): Make makefiles precious.

        * make.c (decode_switches): For a positive_int or floating option,
        if we moved to the next argument word, but found no argument for the
        option, move back to the correct word.

        * make.c (decode_switches): If we got any unknown options, die after
        processing all arguments.

        * GNUmakefile: Moved `include depend' to the end, so the default
        goal will be set before then.

        * load.c (wait_to_start_job [Unix, UMAX]): Merged into one version
        under #ifdef LDAV_BASED.  Only loop while we have jobs running.
        Sleep for increasing amounts (increase one second per iteration)
        before checking the load average (after the first check).
        Get the load average from function load_average.
        (wait_to_start_job [not LDAV_BASED]): Always return.
        (load_average [UMAX]): Fetch load average for Encore UMAX.
        (load_average [not NO_LDAV]): Fetch load average from /dev/kmem.
        [not NO_LDAV]: Define LDAV_BASED.

Tue Dec 20 18:54:50 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.28.

        * commands.c (wait_for_children): Take second arg, ERROR.  If
        nonzero, and there are children, print a message on stderr.
        (execute_file_commands, fatal_error_signal): Pass second arg.
        * make.c (die), remake.c (update_goal_chain), variable.c
        (expand_function: `shell'): Ditto.

Sat Dec 17 01:05:38 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * commands.c (start_job): Call wait_to_start_job before forking.

        * load.c (load_average): Converted to wait_to_start_job.

        * remote.c: New file for remote execution functions.
        (start_remote_job_p): Return nonzero if the next job should be run
        remotely.
        (start_remote_job): Start a remote job and return an ID for it.
        (remote_status): Get status of dead remote children.

Fri Dec 16 16:51:07 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

        * commands.c (start_job): If start_remote_job_p () returns nonzero,
        call start_remote_job to start the job rather than fork and exec.
        (child_handler):

        * commands.c (execute_file_commands): Moved load average checking to
        start_job.

        * commands.c (child_handler: USG): Record the pid wait returns.

        * load.c (UMAX): Added some #include's needed for UMAX.

        * read.c (multi_glob), variable.c (string_glob): Ignore a (char **)
        -1 return from glob_filename.

        * variable.c (variable_expand): Make sure we don't increment past
        the end of the string we were passed.

        * variable.c (variable_expand): Terminate the expansion.

        * file.c (rename_file): If there is already a file under the new
        name, set its contents equal to FILE's (ick).

        * variable.c (define_automatic_variables): Pass all the args to
        define_variable when defining MAKELEVEL!

        * commands.c (execute_file_commands): If max_load_average > 0, and
        we have children running, don't start up another child until the
        load average goes below max_load_average.

        * make.c: New variable `max_load_average'.
        (struct command_switch, decode_switches, decode_env_switches):
        Handle floating-point (double) args.
        (command_switches): Added `-l' switch to set `max_load_average'.

        * load.c (load_average): New file and function to return a double
        that is the current load average (1.00 scale).
        * GNUmakefile, oldMakefile: Pass flags in $(LOAD_AVG) for load.c.

Thu Dec 15 15:22:08 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Makefile: Renamed to oldMakefile.
        * GNUmakefile: Make Makefile from oldMakefile and depend.

        * read.c (read_all_makefiles): When putting the default makefiles in
        the read_makefiles chain so they will be remade, put them in the
        right order.

        * remake.c (update_goal_chain): If MAKEFILES is nonzero, always make
        in serial, and return as soon as one goal whose `changed' member is
        nonzero  is successfully remade.

        * commands.c: Don't include <sys/fcntl.h>.

        * commands.c (construct_command_argv): Added ` to sh_chars.

        * make.h: Don't declare construct_makeflags.

        * make.c (main): Set up MAKEFLAGS and MFLAGS and make an environment
        both before and after reading the makefiles, so the makefiles can
        use them and possible change them, and later children will get the
        right information.
        (construct_makeflags): Replaced with define_makeflags (static void),
        which defines the two variables.
        * variable.c (define_automatic_variables): Don't define MAKEFLAGS
        and MFLAGS.

Mon Dec 12 14:40:31 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * Version 3.27.

        * commands.c (child_handler): Reset the handler to ourselves when
        called for USG, since it has no safe signals.

        * commands.c: For USG, use an int rather than a `union wait' for
        wait calls, and dissect it with bitmasks.
        (child_handler): No wait3 system call in USG.  Since we can't
        protect from hanging, always return immediately if we have no
        children we know about and we're not running a `shell' function.
        (There is still the danger of hanging waiting for a child that died
        without our being notified.)

        * remake.c: Include <fcntl.h> instead of <sys/file.h>.  What we need
        is really in <fcntl.h>, and while BSD <sys/file.h> includes
        <fcntl.h>, USG doesn't.

        * make.c (main): Figure out the program name before doing anything
        which might need it (in a call to error or fatal).

        * dir.c, glob.c: Use `struct dirent' and <dirent.h> for USGr3.

        * arscan.c (ar_scan): Added missing & before buf (which is an int)
        if SARMAG is not defined (SysV).

Fri Dec  9 18:44:13 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

        * Version 3.26.

        * dir.c (find_directory, dir_file_exists_p): Keep track of how many
        directories we have open and don't let it be more than
        MAX_OPEN_DIRECTORIES (currently 10).

        * variable.c (expand_function: `foreach'): Use expand_argument
        rather than variable_expand so each repetition doesn't clobber the
        last!!!

Mon Dec  5 15:58:46 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

        * Version 3.25.

        * Makefile: Define `install' target.

        * GNUmakefile: Don't include GNUmakefile or depend in the
        distribution file.

Wed Nov 30 15:53:42 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * commands.c (execute_file_commands): Don't clobber a null into
        random storage if there were no $^ and/or $? words.

        * remake.c (check_dep): Set *MUST_MAKE_PTR nonzero if a dependency
        doesn't exist.

        * ar.c (ar_member_date, ar_touch): Make sure the modtime of the
        archive file itself is known before we fetch or change the modtime
        of one of its members.

        * read.c (read_makefile): Expand variable and function references
        before parsing rules so variable can contain special characters
        (colons and semicolons).

Sat Nov 26 11:36:31 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * variable.c (expand_function: `filter', `filter-out'): Fixed so
        that filter-out works right.

        * variable.c (expand_function: `filter', `filter-out'): Made these
        functions use each word of their first argument as a pattern.

Fri Nov 25 10:51:47 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.24.

        * read.c (record_files): If a target is listed more than once in a
        single rule (that defines commands), give a warning message rather
        than the counter-intuitive message saying commands were already
        defined (in the same place).

        * make.c (fatal, error): Made them both take 6 args since there is
        at least one error message that need that many.  Too bad vfprintf is
        not universal!

        * Version 3.23.

        * read.c (read_makefile): Moved the construction of the `struct
        commands' into record_files.  Call record_files before recursing for an
        included makefile so the higher-up will determine the default goal.
        (record_files): Take arguments COMMANDS, COMMANDS_IDX and
        COMMANDS_STARTED and construct a `struct commands.

Thu Nov 24 14:36:33 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.22.

        * make.c (main): Made it a fatal error if we can't move back to the
        directory we started in before re-execing.

        * make.c (main): Get the current directory before doing anything
        else, so we know it even if we don't need it for the value of
        `MAKE', since we might want it when re-execing.

Wed Nov 23 13:34:44 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.21.

        * read.c (record_files): Eliminate duplicate deps in a chain.

        * variable.c (expand_function: `sort'): Pass the right number to
        qsort, not one less.

        * remake.c (remake_file): Always call notice_finished_file if
        FILE->command_state == cs_finished.

        * commands.c (execute_file_commands): Call notice_finished_file to
        set FILE's status correctly when start_job fails (because it's out
        of commands or running under -n).

Fri Nov 18 15:31:12 1988  Roland McGrath  (mcgrath at saffron.Berkeley.EDU)

        * Version 3.20.

        * remake.c (update_file_1): Set the `update_status' of FILE to
        nonzero and set FILE's `updated' bit if we have decided to give up
        on remaking FILE because of errors in the dependencies.

        * rule.c (pattern_search): Debugging messages use `dependency' (vs.
        `dependent') properly.

        * make.texinfo (Conditionals: Conditional Syntax): Function index
        entries for `ifndef' and `ifneq'.

        * variable.c (define_automatic_variables): Define `MAKELEVEL' to the
        decimal number of the makelevel, since it may be malformed or blank.

        * remake.c (remake_file): Call notice_finished_file after touching.

Sat Nov 12 19:29:34 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.19.

        * GNUmakefile (dist): Pass the `-f' flag to compress.

        * vpath.c (build_vpath_lists): Check for VPATHS being nil after
        constructing the general VPATH list from the `VPATH' variable.

Fri Nov 11 08:02:26 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (fatal, error): Made error messages for recursive runs be
        shorter.

Thu Nov 10 16:51:36 1988  Roland McGrath  (mcgrath at basil.Berkeley.EDU)

        * Version 3.18.

        * read.c (read_makefile): Made it eat leading spaces and formfeeds
        (but not tabs), like it's documented to.

        * read.c (read_makefile): Let included makefiles determine the
        default goal, as is done by System V Make.

Tue Nov  1 19:03:08 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * variable.c (new_environ): Don't increment VCNT when a variable is
        rejected.

Fri Oct 28 16:54:15 1988  Roland McGrath  (mcgrath at basil.Berkeley.EDU)

        * Version 3.17.

        * rule.c (convert_to_pattern): Don't use the same storage for a name
        in two rules since new_pattern_rule may free this storage when a
        rule is discarded.

        * rule.c (new_pattern_rule): Undid useless change I made Oct 25.

Thu Oct 27 19:17:53 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.16.

        * GNUmakefile, Makefile: Fixed a typo in a comment.
        * Makefile: Removed malloc.o from object file list.

        * variable.c: Removed old debugging #define's for xmalloc and
        xrealloc so non-ANSI cpp's won't barf.

        * make.c (main): Made local array for temp file name static so
        compilers that don't do auto aggregate initialization won't barf.

        * read.c: Removed static declaration of copy_dep_chain since it is
        no longer static.

Tue Oct 25 16:59:30 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

        * rule.c (new_pattern_rule): If we threw out the new rule because it
        matched an old one and OVERRIDE was zero, don't put the freed
        pointer in the chain!

Wed Oct 19 15:07:43 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

        * Version 3.15.

        * variable.c (expand_function: `sort'): Don't do the sorting and
        writing out if there were no words in the first place.

        * remake.c (remake_file): Only fail with a "no way to make" message
        for a dependency (non-target) file.  If we don't know how to remake
        a target file, pretend it was successfully remade and is very new.

        * remake.c (remake_file): Don't increment `files_remade' for a
        non-target file we don't know how to remake.

        * read.c (record_files): Don't die with "both : and :: entries" for
        a file whose `is_target' flag is not set.

Tue Oct 18 17:24:11 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * variable.c (expand_function: `patsubst', `subst'): Free the right
        things!

        * variable.c (expand_function: `subst'): Don't clobber the
        pointer to the end of the second arg and then try to use it!!!

Mon Oct 17 16:44:45 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

        * variable.c (expand_function: `patsubst'): Don't clobber the
        pointer to the end of the second arg and then try to use it!!!

        * variable.c (expand_function: `word' function): Made it parse its
        second argument correctly.

        * ar.c (ar_touch): Return 1 rather than -1 for on errors.

Sat Oct 15 15:12:16 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.14.

        * GNUmakefile: Removed explicit rule for make.dvi since the built-in
        implicit rule now works.

        * rule.c (default_suffix_rules): Fixed .texinfo.dvi rule yet again
        so that it really works, now that parens are counted.

        * remake.c (update_file_1): Set FILE's `updated' flag after calling
        remake_file if it failed or finished immediately.

        * remake.c (update_file): Use the `updated' flag rather than the
        command state to decide if a file was fully considered, and
        therefore might give an "up to date" message.

        * variable.c (expand_function): Made all functions that take more
        than one argument count parens of the appropriate flavor in their
        args and ignore commands nested in parens.

Fri Oct 14 18:35:00 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * read.c (read_all_makefiles): Pass second arg to read_makefile for
        default makefiles.

Thu Oct 13 16:40:08 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.13.

        * GNUmakefile: Added an explicit rule for make.dvi since the
        built-in .texinfo.dvi implicit rule is screwed up.

        * rule.c (default_suffix_rules): Added a comment that the
        .texinfo.dvi rule does not work because of an ahem, feature of Make
        that at some point will be fixed--er, enhanced to alleviate this
        difficulty.

        * rule.c (default_suffix_rules): Fixed Texinfo -> DVI rule (again).

        * make.texinfo (Commands: Execution): Documented new competing for
        standard input among children.

        * commands.c (struct child): Added `good_stdin' flag to tell if this
        child has the stdin that doesn't point into nirvana.
        (good_stdin_used): New variable to tell if any child has the good
        standard input.
        (child_handler): Reset `good_stdin_used' if a dead child's
        `good_stdin' flag is set.
        (start_job): Give the new child the good standard input if
        `good_stdin_used' is no set, and set the child's `good_stdin' flag
        appropriately.

        * rule.c (default_suffix_rules): Changed Texinfo -> DVI rule to work
        better (I hope).

        * read.c (read_all_makefiles): Stop reading default makefiles after
        one is found.

        * read.c (read_makefile): Reset `reading_filename' and
        `reading_lineno_ptr' after recursing for an included makefile.

        * GNUmakefile: New GNU Make-specific makefile that does everything
        Makefile does plus distribution stuff, and doesn't contain any hacks
        to try to work with Unix make.

        * Makefile: Removed distribution stuff.

        * make.c (main): Use mktemp to construct the names of temporary
        files used for standard input makefiles.

        * make.c (main): Don't turn standard input into a broken pipe.

        * commands.c (start_job): Keep two extra file descriptors around: a
        good standard input, and a bad one that reads from a broken pipe.
        On the child side of the fork, if there are other children, give
        this one the broken pipe so they won't compete; if this is the only
        one, give it the good standard input.

        * make.h: Declare notice_finished_file.

        * commands.c (execute_file_commands): Use noticed_finished_file
        after waiting for the child when there is only one job slot.

        * remake.c (notice_finished_file): New function to re-check mtime's
        and such things to be done when commands finish.
        (update_file_1): Use notice_finished_file.

        * commands.c (child_handler, execute_file_commands): Use new
        variable `job_slots_used' to record the number of jobs currently
        running, rather than diddling with `job_slots'.
        (execute_file_commands): Increment `job_slots_used' before calling
        start_job and decrement it on failure to avoid race condition.
        If there is only one job slot, wait for the child to finish and
        return its status so commands are run in linear order, as if there
        were no parallelism.

Wed Oct 12 15:59:03 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * remake.c (remake_file): Don't print a "No way to make" message for
        targets whose `dontcare' flags are set.

        * read.c (read_all_makefiles): Set the `dontcare' flag of the
        `struct file' each default makefile added to the chain.

        * file.h (struct file): Add `dontcare' member.

        * read.c (read_all_makefiles): When no default makefiles are found,
        put the names of all those tried in the `read_makefiles' chain so
        they will be updated if possible, giving their `struct dep's'
        `changed' members the value of 0 so we won't care if they cannot be
        found or remade.

        * make.texinfo (Makefiles: Remaking Makefiles): Documented that
        default makefiles will be remade if not found.

        * read.c (read_all_makefiles): If no default makefiles can be found,
        go through the list of default names, trying to make one, stopping
        if one is made.

        * remake.c (remake_file): Set STATUS to 0 after successfully touching.

        * dir.c (file_impossible, file_impossible_p): Don't clobber FILENAME
        to "" and then try to to a strcmp on it!!!

Mon Oct 10 16:09:18 1988  Roland McGrath  (mcgrath at cinnamon.Berkeley.EDU)

        * make.c (main): Don't do `dir_load (".")'.

        * rule.c (count_implicit_rule_limits), vpath.c
        (construct_vpath_list): Test the existence of a given directory by
        `dir_file_exists_p (DIR, ".")' and assume that if this returns zero,
        it means the directory really does not exist.

        * dir.c (struct dirdata): Replaced with `struct directory' for
        directories, each containing a chain of `struct dirfiles', one for
        each file (real or impossible).
        (dir_load): Removed.
        (find_directory): New function to find the `struct directory' for a
        named directory and return it (possibly creating a new one).
        (dir_file_exists_p): Read the directory on the fly if its stream is
        still valid (and ever was) if the file we're looking for is not
        already in the hash tables.
        (file_impossible, file_impossible_p, dir_name, print_dir_data_base):
        Use the new directory/file scheme.

        * make.texinfo: Miscellaneous editorial changes and clarifiactions.

        * commands.c (struct child): Remove `environ' member.
        (child_handler, start_job, execute_file_commands): Remove use of
        `environ' member and new_environ.

        * make.c (main): Call new_environ after reading makefiles.

        * variable.h: Declare `new_environ' to return void.

        * variable.c (new_environ): Put the environment in `environ' and
        return void.

Fri Oct  7 15:48:39 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

        * Version 3.12.

        * Makefile: Don't make the uncompressed tar file.

        * variable.c (expand_function: `shell' function): Made it not expect
        read to null-terminate the buffer.

        * Makefile: Made it use a temporary symlink to . rather than a
        temporary directory to make the distribution tar file.

Thu Oct  6 17:52:35 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.11.

        * make.texinfo: Fixed a line that got garbaged somehow.

Mon Oct  3 16:14:39 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * make.c (main): Try to move back to the directory we started in
        before re-exec ourself.

        * remake.c (update_file_1): A double-colon target with no deps
        always needs to be remade.

        * remake.c (remake_file): Changed "No way to make" message to say
        `target' rather than `file'.

Sun Oct  2 12:50:47 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

        * remake.c (update_file_1): Set FILE->update_status to the return
        value of remake_file.

        * rule.c (convert_to_pattern): Fixed swapped lengths passed to
        xmalloc for source/target suffixes.

        * make.texinfo: Documented that MAKEFLAGS and MFLAGS are read in
        from makefiles.  Updated the `Features' section a bit.

        * make.c (main): Read switches from MAKEFLAGS and MFLAGS variables
        after reading in makefiles.

        * make.c (main): Put a line "/tmp/foo:;" rather than ".PHONY:
        /tmp/foo" in front of temp files made for stdin makefiles.

        * remake.c (update_file): Test the state of the right `struct file'
        for double-colon files.

        * make.c (main): Put a ".PHONY: /tmp/foo" line in front of temp
        files made for stdin makefiles so they won't be remade when we
        re-exec.  Kludge-o-matic!!

        * remake.c (update_goal_chain): Judge files as being finished based
        on their `updated' flag, not their state.

        * read.c (read_makefile): Don't check for FILENAME being "-".
        (read_all_makefiles): Set each element of MAKEFILES to the name put
        in READ_MAKEFILES by read_makefile, since read_makefile may free the
        storage for the name it is passed, and someone might want to look at
        the elements of MAKEFILES again.

        * make.c (main): For each `-f' flag with arg `-' (standard input),
        read standard input into a temp file and pass the temp file's name
        to read_all_makefiles, after making sure it will not be remade.

        * make.c (construct_makeflags): Always put out `-j1'.

Sat Oct  1 00:19:59 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * commands.c (execute_file_commands): If commands are nothing but
        whitespace, set the state to `cs_finished' before returning 0.

        * make.c (decode_switches): Allocate space for args in stringlists
        so they can be freed later.

        * make.h: Declare `makelevel'.

        * variable.c (makelevel): Moved to make.c (and made global).

        * make.c (fatal, error): Print the makelevel if it's > 0.
        (perror_with_name): Use error rather than calling fprintf directly.
        (pfatal_with_name): Use fatal rather than fprintf and die.

        * variable.c (new_environ): Don't put default variables (origin
        `o_default') into the environment; they just take up space.

        * read.c (read_makefile): Don't add FILENAME to the chain of read
        makefiles if it's "-" (standard input).

        * remake.c (update_goal_chain): Set STATUS correctly when nothing
        happens (as well as in all other situations).

        * make.c (construct_makeflags): Put a `-' before each switch and
        spaces between them.

        * Version 3.10.

        * commands.c (wait_for_children): Don't check if `children' is nil.
        This is the case when waiting for the child of a `shell' function.

        * dir.c (dir_load): Don't add a hash-table entry for directory
        DIRNAME and filename "" if DIRNAME doesn't exist.

        * commands.c (execute_file_commands): Return 0 after start_job
        returns 1 (failure) under the -n flag.

        * remake.c (remake_file): Set the state to `cs_finished' when not
        calling execute_file_commands.

        * remake.c (update_goal_chain): Second arg is now MAKEFILES, nonzero
        meaning to disable -t, -q, and -n for each target unless the target
        was also given on the command-line.

        * read.c (read_makefile): Enter the `struct file's for the makefiles
        added to the `read_makefiles' `struct dep' chain.

        * remake.c (update_goal_chain): Made it not enter the files for the
        goals in the chain.  It will already have been done.

        * rule.c (convert_to_pattern): Null-terminate the names of targets
        and deps of the pattern rules properly.

Fri Sep 30 18:56:20 1988  Roland McGrath  (mcgrath at nutmeg.Berkeley.EDU)

        * make.c (main): Call install_default_pattern_rules.

        * make.h: Declare copy_dep_chain.

        * read.c (copy_dep_chain): Moved to make.c (and made global).

        * make.c (main): Call update_goal_chain to update goals.
        Update read makefiles and re-exec self if they change.

        * remake.c (update_file): Make this function static.
        (update_goal_chain): New function to update a `struct dep' chain of
        goals, waiting until they are all finished before returning.

        * make.h: Don't declare update_file.  Declare update_goal_chain.

        * make.c (main): Call snap_deps, etc. that were in read_all_makefiles.

        * read.c (find_makefile): Removed this function.
        (read_all_makefiles): Don't update makefiles, don't diddle with
        pattern rules, don't call snap_deps, etc.  Return a `struct dep'
        chain of all makefiles read.
        (read_makefile): Now takes two args: FILENAME and TYPE, which is 0
        for a normal makefile, 1 for MAKEFILES variable or 2 for an included
        makefile.  Add a `struct dep' containing the name of the makefile
        (as it was found in the search path for type 2s), and TYPE in the
        `changed' member to the global `read_makefiles' chain.

        * make.h, rule.c (displace_pattern_rules,
        add_displaced_pattern_rules): Removed these functions.

        * read.c (read_makefile): Variable-expand the name of an `include'd
        makefile before calling find_makefile on it.

        * file.c (snap_deps): If the `struct file' for a `struct dep'
        already exists, free the `struct dep's `name' member before setting
        it to nil (since this info is in the `struct file').

        * read.c (copy_dep_chain): Made it copy each name rather than
        leaving multiple `struct dep's with the same pointers.

Thu Sep 29 19:08:13 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

        * make.c (decode_switches): Fixed second decode_env_switches call to
        use correct length of "MFLAGS" (6, not 5).

        * read.c (read_makefile): Don't stop reading when readline returns
        zero lines read.  Only stop when the stream reaches EOF.  This makes
        it recognize the last line of a makefile without a newline.

        * remake.c (remake_file): If we don't know how to make FILE, set its
        command state to `cs_finished'.

        * remake.c (update_file): Don't write the "up to date" message if
        update_file_1 returned a nonzero status.

Wed Sep 28 16:30:07 1988  Roland McGrath  (mcgrath at catnip.Berkeley.EDU)

        * commands.c (child_handler): Set the `update_status' member
        properly for ignored errors.

        * rule.c (convert_to_pattern): Made it not care about if the target
        suffix comes before the source suffix in the .SUFFIXES list.

        * make.texinfo: Misc editorial changes.

        * commands.c (wait_for_children): Return immediately if `children'
        is nil (there are no children).

Tue Sep 27 15:33:14 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

        * Version 3.09.

        * commands.c (struct child): New member `command_ptr' to hold the
        current position in the commands.  The `commands' member is never
        changed.
        (start_job, child_handler, execute_file_commands): Use new method
        for `commands' and `command_ptr' members.

        * make.c (decode_env_switches): Skip past an invalid letter (instead
        of looping forever).

        * commands.c (struct child): Add `environ' member to hold the
        environment for this child.
        (execute_file_commands): Get a new environment from new_environ and
        put in the the new `struct child's `environ' member.
        (child_handler): When freeing a child, free its `commands' member, the
        elements of its `environ' array and its `environ' member itself.
        (start_job): Set `environ' to the child's `environ' member before
        exec'ing the command.

        * variable.h, variable.c (new_environ): Made it return the new
        environment, not putting it in `environ'.

        * remake.c (update_file): Don't give a "is up to date" message
        unless no files were remade and the state went from `cs_not_started'
        to `cs_finished', so repeat calls to finish jobs won't get the message.

Mon Sep 26 16:26:08 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * Version 3.08.

        * make.texinfo (Commands: Execution): Documented that children will
        be waited for rather than killed.

        * commands.c (fatal_error_signal): Wait for children.
        (kill_children): Removed this function.

        * make.c (main, die): Wait for children to die, don't kill them.

        * variable.c (expand_function): Use wait_for_children.

        * make.c (main): Use wait_for_children rather than child_handler.

        * commands.c (wait_for_children): New function to block waiting for
        children, insuring that child_handler is not called recursively.
        (execute_file_commands, kill_children): Use wait_for_children.

        * commands.c (child_handler): Start up additional commands in a
        sequence after an ignored error.

        * remake.c (update_file): Don't print "`foo' is up to date" messages
        when update_file_1 returns while commands are executing.

        * remake.c (update_file_1): Pass the file name to name_mtime, not
        the bloody `struct file', dammit!!

        * commands.c (child_handler): Print out the "*** ..." error message
        when not under -i.  (I somehow forgot this.)

        * remake.c (update_file_1): Use name_mtime rather than file_mtime to
        re-get the mtime of a file whose commands have finished.

        * make.c (command_switches, decode_switches, decode_env_switches):
        Make all switches that take string args allow them right after the
        switch letter.

        * commands.c (child_handler): Check for a child being the `shell'
        function's command returning and set the global variable for
        expand_function to check.

        * variable.c (expand_function): For the `shell' function, instead of
        waiting for the child shell ourselves, let child_handler do it and
        loop around waiting for something to happen.

        * make.c (print_version): Made the copyright year static, not dynamic.

        * make.h, make.c: Remove construct_argv function.

        * make.c (main): Say "no goal target" instead of "no target".

        * make.texinfo (Commands: Parallel): Don't send SIGKILL.

        * commands.c (kill_children): Don't send SIGKILL to children that
        aren't killed by the first signal.

        * make.c (main), commands.c (kill_children): Decide between SIGCHLD
        and SIGCLD based on whether or not SIGCHLD is defined, not on USG.

        * Makefile: Link make with $(LOADLIBES).

        * read.c (construct_include_path): Fixed another bad xrealloc call.

        * make.c (decode_switches): Fixed an xrealloc call with no first arg.

Sat Sep 24 01:16:21 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * Version 3.07.

        * remake.c (update_file_1): If deps are running, set state to
        `cs_deps_running' and return 0.  If deps are done, run commands.

        * commands.c (child_handler): Made it delete non-precious targets
        killed by fatal signals.

        * make.texinfo: Documented parallelism.

Fri Sep 23 16:52:27 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * remake.c (update_file_1): Don't return if FILE's state is
        `cs_deps_running'.  In that case, we need to run through and check
        the states of all our dependencies.

        * commands.c (execute_file_commands): Decrement `job_slots' after
        starting a new job to run file commands.

        * commands.c (start_job): Made it set the state to `cs_running'.

        * make.c (main): Fixed usage of `g', `lastgoal', and `goals' in the
        goal-making loop.

        * commands.c (child_handler): When commands finish, set the
        corresponding file's `update_status' and `updated' flags as
        appropriate, and reset the modtimes of the file and any `also_make'
        files it has.

        * remake.c (remake_file): Don't re-set `last_mtime' and set `updated'.

        * commands.c (fatal_error_signal): Don't swallow all the children
        with a loop around `wait ((union wait *) 0)'!!!

        * make.c (struct command_switch): Added `positive_int' type.
        (switches): Added -j (job_slots).
        (construct_makeflags, decode_switches, decode_env_switches):
        Handle`positive_int'-type switches.

        * glob.c (glob_vector): Rename local variable `vector' to `VeCtOr'.
        This is said to avoid a conflict with some system's global `vector'
        variable.

        * variable.c (expand_function): Made the `shell' function use
        construct_command_argv and do its own child control and piping.

        * make.c (main): Turn standard input into a broken pipe after
        reading in all makefiles (the last time it will be needed).

        * commands.c (struct child): Remove `pipe_fd' member.  We don't use
        pipes any more.
        (start_job): Return 0 for success, 1 or failure (rather than void).
        Don't use pipes.  Don't turn the child's stdin into a broken pipe.
        (child_handler): Print "*** Error" messages when necessary.
        Die on failed commands when -k was not given.
        (execute_file_commands): Check the return of start_job and remove
        the child from the chain and return failure if it is nonzero.

        * make.c (die): New function to clean up and exit.
        (fatal, pfatal_with_name): Use die.

Thu Sep 22 14:27:11 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * commands.c (struct child): Added `commands', `pipe_fd', and
        `noerror' members to keep track of info about a command thread.
        (start_job): New function to start a job and update the argument
        `struct child' to reflect its status.
        (execute_file_commands): Merged run_file_commands back in.
        Made it use new start_job function.

        * rule.c (freerule): Don't free the `struct commands' of the
        discarded rule.  It may be used in more than one place.

        * commands.c (execute_command_line): Made it not try to delete the
        possibly partly-made file.  The child_handler function will do this.
        (fatal_error_signal): Ditto + call kill_children.

        * make.h: Declare job_slots.

        * make.c (main): Collect goals in a dep chain and run through this
        chain waiting for a child, eliminating finished goals, updating all
        remaining goals, and quitting if they fail and not -k.

        * commands.c (child_handler): If called with SIG < 0, - SIG is the
        max number of children to bury.

        * commands.c (child_handler): If called with SIG as zero,
        block waiting for running children.
        (kill_children): Call child_handler with zero rather than SIGCHLD.

        * remake.c (update_file_1): Use the `command_state' member of FILE
        and its dependencies to determine what commands are running, what to
        do, etc.  If commands or dep commands are running when we are
        called, return success (0).  If commands finished since the last
        time we were called, return their status.

        * commands.h: Declare kill_children.

        * commands.c: Define `struct child' to keep track of child
        processes, with the chain in `children'.
        (child_handler): New function to catch child-termination signals
        (SIGCHLD, or SIGCLD for USG), store the returned status in the
        appropriate structure, take the now-obsolete `struct child' out of
        the chain, and free its storage.
        (execute_file_commands): Put all of the stuff invloving running the
        commands into new function run_file_commands.  Execute_file_commands
        now does process management for the commands, while
        run_file_commands (which is run in a subprocess) runs the commands.
        (kill_children): New function to kill all running children by
        sending them signal SIG.  If there are any children still living
        after they are all sent SIG, they are all sent SIGKILL.

        * make.c (main): Catch SIGCHLD (SIGCLD for USG) with child_handler.

        * commands.h: Declare child_handler function.

        * commands.c (execute_file_commands): Check the `command_state'
        member of FILE and return 0 if it is `cs_running' or
        `cs_deps_running' and return the stored status if it is `cs_finished'.

        * file.h (struct file): Added `command_state' member.

        * commands.c (execute_command_line): Add `$' to the list of
        characters special to the shell.

Wed Sep 21 15:57:41 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * read.c (read_all_makefiles): Call convert_to_pattern before
        recomputing the limits after adding the displaced rules.

        * make.c (main): Move calls to snap_deps, convert_to_pattern, and
        build_vpath_lists to read_all_makefiles.

        * read.c (read_all_makefiles): Install the default pattern rules
        before checking to remake the makefiles, displace these rules before
        reading in the makefiles, and then add the displaced rules to the
        chain after reading in all the makefiles.

        * make.c (main): Don't call install_default_pattern_rules or
        count_implicit_rule_limits.

        * make.h: Declare displace_pattern_rules and
        add_displaced_pattern_rules.

        * rule.c (displace_pattern_rules, add_displaced_pattern_rules): New
        functions to stow the chain and add the stowed chain on the end of
        the current chain.

        * make.texinfo (Implicit: Search Algorithm): Fixed PREV reference.

        * make.c (main): Call construct_include_path right after decoding
        the switches.

        * read.c (find_makefile): Use rename_file.

        * file.h: Declare rename_file.

        * file.c (rename_file): New function to rename a `struct file' and
        put it in the correct hash bucket.

        * read.c (find_makefile): New function to find and update a makefile.
         (read_all_makefilese): Use find_makefile.
         (read_makefile): Don't do updating.  Removed UPDATEIT arg.

        * remake.c (update_file_1): Took out setting the `updated' member to
        -1 rather than 1 sometimes.

        * make.c (main): Made it print version info before doing anything else.

        * remake.c (library_file_mtime, f_mtime): Removed use of last two
        arguments to vpath_search.

        * rule.c (pattern_search): Removed use of last two arguments
        to vpath_search.

        * vpath.c (vpath_search, selective_vpath_search): Removed unused
        DIRPREFIX and DPLEN args.

        * read.c (read_makefile): Also turn off -n when updating makefiles.

Tue Sep 20 17:01:10 1988  Roland McGrath  (mcgrath at pepper.Berkeley.EDU)

        * Makefile: Put tags files in the tarfile.

        * read.c (read_makefile): Get the modtime of the makefile via a stat
        call so that a later file_mtime call won't do VPATH search for it.

        * read.c (read_makefile): Don't turn off -t and -q if the makefile
        was a command-line target.

        * make.c (main): Enter command-line targets as files and set their
        `cmd_target' members.

        * file.h (struct file): Added `cmd_target' member.

        * read.c (read_makefile): Temporarily turn off -t and -q while
        updating makefiles.

        * make.c (main): Don't use arg 0 from other_args (which is now
        argv[0]; i.e., the program's name).

        * read.c (read_makefile): Only return nonzero if commands were
        actually run to remake the makefile.

        * remake.c (update_file_1): Set FILE->updated to -1 if no commands
        were actually run (because no update was done or -t was given).

        * make.c (decode_switches): Fixed bug wherein xrealloc was passed
        bad args if it tried to expand other_args->list.

        * read.c (read_all_makefiles): Made it not look at the `MAKE'
        variable, just use argv[0].

Sun Sep 18 17:34:11 1988  Roland McGrath  (mcgrath at paris.Berkeley.EDU)

        * read.c (rerun_make): New function to re-exec make.

        * make.c (construct_makeflags, construct_argv): New functions to
        construct the `MAKEFLAGS' variable and to construct an arg list from
        parsed info.

        * read.c (read_makefile): New arg UPDATEIT, if nonzero, says to
        update the makefile as a target before reading it in.  When reading
        included makefiles, pass this as zero.  Now returns nonzero if the
        makefile was updated, zero if not.
        (read_all_makefiles): Pass a nonzero UPDATEIT arg to read_makefile
        for all default and -f makefiles and all makefiles from the
        `MAKEFILES' variable.  If any of the makefiles has changed, re-exec
        self to re-read them.

        * remake.c (update_file): Print a "File `foo' up to date'" message
        under -p.

        * commands.c (execute_file_commands): Allocate one byte for each of
        $^ and $< rather than zero if they are to be empty.

Fri Sep 16 13:59:59 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Version 3.06.

        * make.c (command_switches): Fixed entry for `-o' switch.

        * make.texinfo: Renamed -c switch to -C.

        * make.c: Renamed -c switch to -C.

        * Miscellaneous de-linting.

        * read.c (record_files): Made it not free the storage for the name
        if it started with `./' and was therefore not quite the same as in
        the `struct file'.

        * read.c (record_files): If commands were specified twice, the error
        message specifies in what files and at what line numbers.

        * make.c (main): If any of the signals we usually fatal on were
        ignored by the parent (probably a shell), ignore them.

        * make.c (main): Print version info for -v, -p, or -d.
        (print_data_base): Don't print version info.  It will be done in main.

        * variable.c: Increased number of hash buckets to 257.

        * file.c: Increased number of hash buckets to 1007.

        * rule.c (count_implicit_rule_limits): Moved comptation of
        `maxsuffix' to convert_to_pattern, since that function uses
        `maxsuffix', and must be called before count_implicit_rule_limits.

        * rule.c (pattern_search): If an existent (non-intermediate)
        dependendency was found via a terminal rule, set its
        `tried_implicit' flag, so it will never have implicit rule search done.

        * glob.c: Bug fix to avoid alloca(0).

        * arscan.c: USG and Sun386i fixes.

Thu Sep 15 19:40:26 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * make.texinfo: Fixed some typos and spelling errors.

Wed Sep  7 14:20:39 1988  Roland McGrath  (mcgrath at helen.Berkeley.EDU)

        * make.c (decode_switches): Fixed bug wherein a bad option would
        give a useless error message and loop forever.

Tue Sep  6 14:36:02 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.texinfo: Documented `shell' function.

        * variable.c (expand_function): New function `shell', does
        backquote-style command expansion of its arg.

        * commands.c (execute_command_line): Second arg OUTBUF, if not nil,
        gets filled in with a malloc'd buffer containing the piped stdout of
        the command.
        (execute_file_commands): Use above (pass nil).

Mon Sep  5 17:03:49 1988  Roland McGrath  (mcgrath at hecuba.Berkeley.EDU)

        * Makefile: Added copyright notice.
        Added a comment about defining `NO_MINUS_C_MINUS_O' if necessary.

        * Version 3.05.

        * rule.c (default_suffix_rules): Don't pass `-o' switches with `-c'
        switches if `NO_MINUS_C_MINUS_O' is #define'd.

        * make.texinfo: Documented `GNUmakefile'.

        * read.c (read_all_makefiles): Made it try default makefile
        `GNUmakefile' before others.

        * make.texinfo: Added new-style Texinfo header thingies.

Sat Sep  3 18:09:39 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * Version 3.04.

        * make.texinfo (Chained Rules): Added a @cindex about using
        .PRECIOUS to preserve intermediate files.

        * remake.c (update_file_1): Made it not just return before executing
        commands under -p.

        * rule.c (default_pattern_rules, default_variables): Made it use
        `$(AR)' for `ar r' (to put files in archives).

        * vpath.c (build_vpath_lists): Made it recursively expand the
        `VPATH' variable (by using variable_expand instead of lookup_variable).

        * read.c (conditional_line): Made it not swallow whitespace after
        the comma in an `ifeq' using the `(a,b)' syntax.

        * rule.c (count_implicit_rule_limits): Made it not crash if a
        pattern rule dep begins with `/'.

Sun Aug 28 15:51:12 1988  Roland McGrath  (mcgrath at homer.Berkeley.EDU)

        * make.texinfo: Clarified that the arg to the `origin' function is a
        variable *name*, not a reference.

        * make.texinfo: Clarified that both -Idir and -I dir are allowed.

Sat Aug 27 13:49:28 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * remake.c (remake_file): Made touching phonies work right.

Wed Aug 24 20:40:48 1988  Roland McGrath  (mcgrath at nutmeg.Berkeley.EDU)

        * make.texinfo: Removed reference to `RANLIB' variable.

        * Version 3.03.

        * variables.c (expand_function): Added `origin' function.
        * make.texinfo: Documented same.

        * read.c (record_files): Made double-colon entries work.

Sat Aug 20 21:09:39 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (collapse_continuations): Bug fix from RMS.

        * rule.c (install_default_pattern_rules): Made it set the
        `in_use' flag of the created rules to zero, rather than letting
        it be random garbage.

        * rule.c (pattern_search): Fixed putting `also make' targets into
        file strucutres.

        * read.c (record_files): Fixed bug which made double-colon entries
        make it read off into space.

        * make.c (decode_switches): Made it understand `ignored' switches
        rather than dumping core.

Sun Aug 14 16:49:00 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * read.c (read_makefile): Made `include' filenames be
        variable-expanded.

        * read.c (read_makefile): Fixed an error message.

        * read.c (read_makefile): Made it accept ^L's as whitespace.
        * make.c (next_token, end_of_token): Ditto.

        * vpath.c (vpath_search): Fixed it so that the general VPATH (from
        the variable) is always checked, even if a selective VPATH (from a
        directive) matched the filename.

Sat Aug 13 14:20:46 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (decode_switches, main): Made the command switches be
        processed from a table of switches, variables, and types.  No
        functions are passed argc and argv any more.  They are passed arrays
        of strings they need to process.
        * read.c (read_all_makefiles): Made it take an array rather than
        argc and argv.
        (construct_include_path): Ditto.

        * make.c (collapse_continuations): Made it work right (I hope).

        * make.texinfo: Minor editorial changes.

        * read.c (read_makefile): Minor speed improvement by freeing and
        then mallocing something rather than reallocing it to avoid the
        unnecessary bcopy.

Thu Aug 11 00:10:43 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.texinfo: Fixed some unquoted @'s.

        * make.texinfo: Documented multiple-target pattern rules.
        Miscellaneous minor editorial changes and corrections.

        * make.texinfo (Implicit: Catalogue of Rules): Removed the list of
        variables.  That's what the next section is for.
        (Implicit: Implicit Variables): Made it agree with reality.

Wed Aug 10 00:55:39 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * variable.c (print_variable_data_base): Fixed bug which made -p
        dump core.  (This was a really idiotic bug.)

        * rule.c (pattern_search): Fixed a bug which made it make the
        `also_make' member of the file in question nil if the first of
        the successful rule's targets was the matching one.
        Made it use only as much storage as necessary in the `also_make'
        member.
        (create_pattern): Made it use only as much storage as necessary in
        the `lens' and `suffixes' members of the created rule.

        * remake.c (library_file_mtime): Made it `static'.

        * file.c: Added a declaration for `errno', which is declared in some
        <errno.h>'s, but not all.

        * file.h (struct file): Added `also_make' member for multiple-target
        implicit rules.
        * rule.c (pattern_search): Made it put the names of files updated by
        the given file's commands in its `also_make' member.
        * remake.c (update_file_1): Made it mark the files in a file's
        `also_make' member as updated when the file is updated.

        * variable.c (try_variable_definition): Fixed a bug which made it
        define a variable with the name of the whole definition when there
        was no space before the = or :=.

        * make.texinfo (Features): Made the changes which were made in RCS
        revision 2.7 but somehow lost since then.  Added -W.

Tue Aug  9 10:04:50 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * variable.h: Added `o_default' to `enum variable_origin'.
        * variable.c (print_variable_data_base): Made it print the origins of
        the variables.
        * rule.c (install_default_pattern_rules): Made it define the default
        variables with origin `o_default'.

        * make.texinfo: Documented -W.

        * make.c (decode_switches, main): Added the -W flag to give files a
        time-stamp of now, for a `what if' effect when used with -n.

        * commands.c (print_commands): Made it say `(built-in)' for commands
        that are built into the default ruleset.

        * read.c (record_file): Made .SUFFIXES get its deps frontwards (again).
        * rule.c (set_default_suffixes, convert_to_pattern): Made it read
        .SUFFIXES's deps frontwards, so the converted rules will not be in
        reverse order.

        * rule.c (new_pattern_rule): Fixed a bug wherein it would keep
        searching after it had removed a matching rule and ended up diddling
        with freed storage.

        * rule.c (freerule): Made it take the given rule off the chain.
        (new_pattern_rule, count_implicit_rule_limits): Use freerule to
        remove rules from the chain.

        * vpath.c (construct_vpath_list): Made it return after cleaning out
        all previous searchpaths when given a nil DIRPATH arg, so it won't
        go into the construction code and dump core dereferencing a nil
        pointer.

        * variable.c (patsubst_expand): Fixed a bug which made it not match
        correctly and sometimes dump core.

Mon Aug  8 16:35:48 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * rule.c (default_suffix_rules): Made the .texinfo.dvi rule remove
        the files used in the comparison to determine whether or not a
        second TeX run is necessary.

        * make.texinfo: Fixed some overfull TeX hboxes.

        * make.texinfo (Implicit: Catalogue of Rules): Fixed a Texinfo error.

        * rule.c (create_pattern_rule): Fixed bug wherein index was not
        being passed its second arg.

        * read.c (getline): Merged back into readline.

        * rule.c (default_suffixes, default_suffix_rules,
        default_variables): Added .texinfo.info rule.
        * make.texinfo (Implicit: Catalogue of Rules): Documented
        .texinfo.dvi and .texinfo.info rules.

        * make.texinfo (Top): Changed `last updated' date to be correct (for
        the last time it was updated, not today).  Changed `for version
        3.00' since it's not going to be called that.

Sat Aug  6 19:51:10 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * commands.c (print_commands): Added this function to print the
        contents of a `struct commands' for -p.
        * rule.c (print_rule_data_base): Use above.
        * file.c (print_file_data_base): Ditto.

        * rule.c (count_implicit_rule_limits, new_pattern_rule,
        install_pattern_rule, print_rule_data_base): Made it understand the
        changed `struct rule' and act accordingly.
        (freerule): Added this function to free all the storage used by a rule.

        * rule.c (pattern_search): Made it grok multiple targets of pattern
        rules.  The matching is done properly, but at present, only the
        matching pattern's target is used to give deps and commands.

Fri Aug  5 18:00:29 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * rule.c (struct rule): Changed name, namelen, and patsuffix members
        to targets, lens, and suffixes, which are arrays, for multiple targets.
        (create_pattern_rule): Now takes first arg TARGETS, a nil-terminated
        array of targets, rather than a single target and patsuffix pointer.

        * read.c (record_files): If it finds an implicit pattern rule, it
        collects all the targets into an array and passes the whole thing to
        create_pattern_rule.  If there are non-pattern targets, it is a
        fatal error.

Tue Aug  2 15:06:38 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (readline): Split backslash-newline checking from reading
        and buffer-expanding.
        (getline): Created to do the reading and buffer-expanding formerly
        done in readline.

        * rule.c (pattern_search): Made it reject nonterminal match-anything
        rules when a specific rule has matched, rather than rejecting
        terminal match-anything rules in this case.

        * rule.c (convert_to_pattern): Fixed a bug caused when the change to
        make it only recognize two-suffix rules whose target suffixes
        precede their dependency suffixes which made it work in the opposite
        direction (even worse than it started out).

        * rule.c (pattern_search): Made it reject nonterminal match-anything
        rules as intermediate targets when searching for both real and
        intermediate dependencies, rather than only when searching for
        intermediate ones.

Sun Jul 31 00:33:56 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * rule.c (convert_to_pattern): Made it only recognize two-suffix
        rules whose target suffix comes before the dependency suffix in the
        .SUFFIXES list.

        * variable.c (define_automatic_variables): Made all automatic
        variables be defined with origin `o_automatic'.

        * variable.h: Added `o_automatic' to `enum variable_origin'

        * file.c (remove_intermediates): Made it not print an error message
        if the error was that the file does not exist.

        * rule.c: Removed `recursive' member from `struct rule'.

        * remake.c (library_file_mtime): Made it not use the directory hash
        functions, as reading in and hashing /usr/lib and /lib is slow and
        most likely unnecessary.

        * remake.c (remake_file): Changed message from ``No specification
        for making'' to ``No way to make'' so it will be short enough that
        most filenames will fit on a line.
        Made it look at the `recursive' member of the `struct commands',
        rather than of the `struct file' (which no longer has one).

        * commands.c (execute_file_commands): Made it look at the
        `recursive' member of the `struct commands', rather than of the
        `struct file' (which no longer has one).

        * file.h: Removed `recursive' member from `struct file'.

        * commands.h: Added `recursive' member to `struct commands'.

        * dep.h: Removed unused `quotedparen' member from `struct nameseq'
        and `struct dep'.

        * read.c (dequote): Removed this function.
        (multi_glob): Removed reference to `quotedparen' member of
        a `struct nameseq' and calls to dequote.

        * read.c (record_files): Made it set the stem for $* for all static
        pattern rules, not just those with commands given at that time.
        Removed check for recursive commands.
        Made it check for pairs of .SUFFIXES dependencies to reject as
        default goals as well as single ones (that don't start with dots).
        (read_makefile): Added checks for recursive commands to set
        the `recursive' flag in the `struct commands'.

Sat Jul 30 15:47:23 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (find_next_token): Made the LENGTHPTR arg optionally nil.

        * make.c: Removed `files_made' variable which is defined static in
        remake.c and used only there.
        (main): Cleaned up somewhat.
        (decode_switches): Cleaned up a bit.  Made an unknown option be a
        non-fatal error.
        (decode_env_switches): Made LEN arg unsigned.  Cleaned up.
        (print_version): Made it say ``see the source'' rather than ``see
        the source file'', since there is more than one.

        * file.h: Made `num_intermediates' declared unsigned.

        * file.c: Made `num_intermediates' variable unsigned.
        (remove_intermediates): Removed unused FORMAT arg.
        (enter_file): Made it handle double-colon files properly, adding the
        new entry as the old entry's prev pointer.

        * dir.c: Re-indented the `struct dir' definition to be right.
        (dir_load): Cleaned up slighty.
        (file_exists_p): Removed comment saying we could use `access', since
        that is a bad idea (except for setuid programs).  Cleaned up slightly.

        * commands.c: Changed some comments slightly.
        (execute_file_commands): Cleaned up a bit.  Changed some comments,
        added others.  Moved freeing of storage for $^ and $? to the same
        place as for the other automatic variables.
        (execute_command_line): Made `#' trigger a shell.
        Added some comments.  Cleaned up a bit.  Put all the special chars
        that trigger shells into an array easily changeable at the top.

        * ar.c: Added comments explaining each function.
        (ar_scan_1): Merged into ar_member_date.
        (ar_member_date): Changed call to ar_scan_1 to the body of that
        function.
        (ar_member_date_1): Simplified to a ?: expression rather than an
        if-else statement.
        (ar_member_touch): Changed error handling around a bit.
        None of these errors are fatal now.

        * variable.c (subst_expand): Added a new arg BY_WORD, to do substs
        only on full words.
        (patsubst_expand): Fixed bug which made calls whose patterns
        contained no `%' to not work correctly, by using above.
        (variable_expand): Pass extra arg to `subst_expand'.

        * variable.c (expand_function): Fixed bug which made `foreach' calls
        with one-word lists run off into never-never land.

Fri Jul 29 20:12:36 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * variable.c (expand_function): Made a very minor speed improvement
        by avoiding an unnecessary strlen call.

Wed Jul 27 16:01:47 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * rule.c (default_suffixes): Rearranged the list somewhat; added
        `.el' and `.elc' to speed things up (especially when building
        Emacs), for the same reason `.h' is there.

        * read.c (record_files): Changed `lineno' from `long' to
        `unsigned int'.

Sun Jul 24 02:15:30 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * variable.c (expand_function): Eliminated use of `wstok'
        because it is non-reentrant and unreliable.
        Fixed a minor bug which would cause something not to be freed.
        * make.c (wstok): Removed `wstok' because it is no longer used.

        * variable.c (expand_function): Made `foreach' function put
        spaces between output texts like it's supposed to.

Sat Jul 23 17:32:55 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * rule.c (default_suffixes, default_suffix_rules): Added rule
        to make %.dvi from %.texinfo.

        * dir.c (print_dir_data_base): Made it say a bit more.

Fri Jul 22 23:13:16 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * make.c (print_data_base): Split this function up into one
        for each thing.
        * variable.c (print_variable_data_base): One of the above.
        * rule.c (print_rule_data_base): Ditto.
        * file.c (print_file_data_base): Ditto.
        * dir.c (print_dir_data_base): Ditto.

        * rule.c (install_pattern_rule): Fixed a bug which caused the
        terminal and recursive flags to always be zero for rules
        entered by this function.

        * make.texinfo (Rules: Double-colon): Added a paragraph
        explaining the purpose of double-colon rules.

        * make.texinfo (Implicit: Catalogue of Rules): Updated to
        reflect new C++, TeX, Web, and Texinfo rules.  Other slight
        editorial changes.

        * commands.c (execute_file_commands): Fixed a bug wherein
        random memory could get written for files with no deps.

Wed Jul 20 19:30:31 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * read.c (readline): Fix bug wherein it would not recognize a
        backslash-newline if the buffer filled up and was enlarged
        right before reading the newline.

Tue Jul 19 19:55:02 1988  Roland McGrath  (mcgrath at chilli.Berkeley.EDU)

        * read.c: Added default suffix rules for .cc (using $(C++),
        which defaults to `g++', and $(C++FLAGS)), .tex, .dvi, .web
        and .cweb (using $(TEX), $(WEAVE), $(TANGLE), $(CWEAVE) and
        $(CTANGLE)).

Sat Jul 16 21:24:28 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Made error formats use %u rather than %ld for line numbers,
        which are now unsigned int's rather than long's.

        * read.c (conditional_line): Fixed some bugs caused by use of
        unsigned int rather than int in one place.

        * read.c (conditional_line): Put the info about active
        conditionals in a struct.
        (read_makefile): Make a new struct of info about conditionals
        for included makefiles and restore the old one after the
        included makefile has been read.

        * read.c (read_makefile): Don't try to read a makefile with
        name "" after giving an error message because an `include'
        directive gave no filename.

        * read.c (read_makefile): Give an error message for
        non-whitespace text after the filename in an `include' directive.

        * make.c (error): Take five args, like `fatal'.  It managed to
        lose with only two.  Is there a better way to do this without vfprintf?

        * read.c (read_makefile): Commands consisting of only
        whitespace are not the same as no commands.  I thought I'd
        fixed this bug months ago; it seems to have come back.

        * make.c (collapse_continuations): All whitespace around a
        backslash-newline combination is turned into a single space.

        * Added COPYING file and copyright notices to all files.

        * make.texinfo (Running: Goals): Fix a typo.

        * read.c (do_define): Take an arg for the origin of the
        variable being defined.
        (read_makefile): Grok `override define'.

        * make.texinfo (Variables: Override Directive, Defining):
        Document the `override define' combination directive.

        * ar.c (ar_member_date): Make a 0 return from `ar_scan' return
        (time_t) -1 (nonexistent file), rather than (time_t) 0, which,
        when put in the `struct file', makes `file_mtime' try to get
        the mtime over and over again.

        * variable.c (pattern_matches): Fix a bug that made patterns
        not beginning with `%' never match.

Fri Jul 15 21:01:44 1988  Roland McGrath  (mcgrath at tully.Berkeley.EDU)

        * Took Make out of RCS.

        * Split the monolithic `make.c' into several smaller files.

\f

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