1 # Process this file with autoconf to produce a configure script.
3 # Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
4 # 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
5 # This file is part of GNU Make.
7 # GNU Make is free software; you can redistribute it and/or modify it under
8 # the terms of the GNU General Public License as published by the Free Software
9 # Foundation; either version 3 of the License, or (at your option) any later
12 # GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
13 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
17 # You should have received a copy of the GNU General Public License along with
18 # this program. If not, see <http://www.gnu.org/licenses/>.
20 AC_INIT([GNU make],[3.82.90],[bug-make@gnu.org])
23 AC_REVISION([[$Id: configure.in,v 1.157 2010/08/29 23:05:27 psmith Exp $]])
26 AC_CONFIG_AUX_DIR(config)
27 AC_CONFIG_SRCDIR(vpath.c)
28 AC_CONFIG_HEADERS(config.h)
31 AM_INIT_AUTOMAKE([1.9])
33 # Checks for programs.
38 AC_CHECK_PROG(AR, ar, ar, ar)
39 # Perl is needed for the test suite (only)
40 AC_CHECK_PROG(PERL, perl, perl, perl)
42 # Specialized system macros
48 # Enable gettext, in "external" mode.
50 AM_GNU_GETTEXT_VERSION(0.14.1)
51 AM_GNU_GETTEXT([external])
53 # This test must come as early as possible after the compiler configuration
54 # tests, because the choice of the file model can (in principle) affect
55 # whether functions and headers are available, whether they work, etc.
58 # Checks for libraries.
59 AC_SEARCH_LIBS(getpwnam, [sun])
61 # Checks for header files.
66 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
67 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h)
69 # Set a flag if we have an ANSI C compiler
70 if test "$ac_cv_prog_cc_stdc" != no; then
71 AC_DEFINE(HAVE_ANSI_COMPILER, 1,
72 [Define to 1 if your compiler conforms to the ANSI C standard.])
76 # Determine what kind of variadic function calls we support
77 AC_CHECK_HEADERS(stdarg.h varargs.h, break)
85 # Find some definition for uintmax_t
87 AC_CHECK_TYPE(uintmax_t,,[
88 uintmax_t="unsigned long"
89 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
90 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
91 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
93 # Find out whether our struct stat returns nanosecond resolution timestamps.
95 AC_STRUCT_ST_MTIM_NSEC
96 AC_MSG_CHECKING([whether to use high resolution file timestamps])
97 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
98 make_cv_file_timestamp_hi_res=no
99 if test "$ac_cv_struct_st_mtim_nsec" != no; then
100 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
102 # include <inttypes.h>
104 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
105 [make_cv_file_timestamp_hi_res=yes],
108 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
109 if test "$make_cv_file_timestamp_hi_res" = yes; then
114 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
115 [Use high resolution file timestamps if nonzero.])
117 if test "$make_cv_file_timestamp_hi_res" = yes; then
118 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
119 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
120 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
121 if test "$ac_cv_search_clock_gettime" != no; then
122 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
123 [Define to 1 if you have the clock_gettime function.])
127 # Check for DOS-style pathnames.
130 # See if we have a standard version of gettimeofday(). Since actual
131 # implementations can differ, just make sure we have the most common
133 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
134 [ac_cv_func_gettimeofday=no
135 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
138 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
139 exit (gettimeofday (&t, 0) != 0
140 || t.tv_sec < 0 || t.tv_usec < 0);
142 [ac_cv_func_gettimeofday=yes],
143 [ac_cv_func_gettimeofday=no],
144 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
145 if test "$ac_cv_func_gettimeofday" = yes; then
146 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
147 [Define to 1 if you have a standard gettimeofday function])
150 AC_CHECK_FUNCS( strdup strndup mkstemp mktemp fdopen fileno \
151 dup2 getcwd realpath sigsetmask sigaction \
152 getgroups seteuid setegid setlinebuf setreuid setregid \
153 getrlimit setrlimit setvbuf pipe strerror strsignal \
154 lstat readlink atexit)
156 # We need to check declarations, not just existence, because on Tru64 this
157 # function is not declared without special flags, which themselves cause
158 # other problems. We'll just use our own.
159 AC_CHECK_DECLS([bsd_signal], [], [], [[#include <signal.h>]])
161 AC_FUNC_SETVBUF_REVERSED
163 # Rumor has it that strcasecmp lives in -lresolv on some odd systems.
164 # It doesn't hurt much to use our own if we can't find it so I don't
165 # make the effort here.
166 AC_CHECK_FUNCS(strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp)
168 # strcoll() is used by the GNU glob library
174 AC_FUNC_CLOSEDIR_VOID
178 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
179 # doesn't. So, we will.
181 if test "$ac_cv_header_nlist_h" = yes; then
182 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
184 nl.n_name = "string";
186 [make_cv_nlist_struct=yes],
187 [make_cv_nlist_struct=no])
188 if test "$make_cv_nlist_struct" = yes; then
189 AC_DEFINE(NLIST_STRUCT, 1,
190 [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
194 AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
197 /* NetBSD declares sys_siglist in unistd.h. */
204 # Check out the wait reality.
205 AC_CHECK_HEADERS(sys/wait.h,,,[[#include <sys/types.h>]])
206 AC_CHECK_FUNCS(waitpid wait3)
207 AC_MSG_CHECKING(for union wait)
208 AC_CACHE_VAL(make_cv_union_wait, [dnl
209 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
210 #include <sys/wait.h>]],
211 [[union wait status; int pid; pid = wait (&status);
213 /* Some POSIXoid systems have both the new-style macros and the old
214 union wait type, and they do not work together. If union wait
215 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
216 if (WEXITSTATUS (status) != 0) pid = -1;
218 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
219 -- blow chunks here --
223 /* Make sure union wait works with waitpid. */
224 pid = waitpid (-1, &status, 0);
227 [make_cv_union_wait=yes],
228 [make_cv_union_wait=no])])
229 if test "$make_cv_union_wait" = yes; then
230 AC_DEFINE(HAVE_UNION_WAIT, 1,
231 [Define to 1 if you have the \`union wait' type in <sys/wait.h>.])
233 AC_MSG_RESULT($make_cv_union_wait)
236 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
237 if test "$PATH_SEPARATOR" = ';'; then
238 AC_DEFINE(HAVE_DOS_PATHS, 1,
239 [Define to 1 if your system requires backslashes or drive specs in pathnames.])
243 # See if the user wants to use pmake's "customs" distributed build capability
245 AC_SUBST(REMOTE) REMOTE=stub
248 AC_HELP_STRING([--with-customs=DIR],
249 [enable remote jobs via Customs--see README.customs]),
252 *) make_cppflags="$CPPFLAGS"
255 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
256 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
259 AC_CHECK_HEADER(customs.h,
262 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
264 CPPFLAGS="$make_cppflags" make_badcust=yes])
267 # Tell automake about this, so it can include the right .c files.
268 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
270 # See if the user asked to handle case insensitive file systems.
272 AH_TEMPLATE(HAVE_CASE_INSENSITIVE_FS, [Use case insensitive file names])
273 AC_ARG_ENABLE(case-insensitive-file-system,
274 AC_HELP_STRING([--enable-case-insensitive-file-system],
275 [assume file systems are case insensitive]),
277 yes) AC_DEFINE(HAVE_CASE_INSENSITIVE_FS) ;;
280 # See if we can handle the job server feature, and if the user wants it.
282 AC_ARG_ENABLE(job-server,
283 AC_HELP_STRING([--disable-job-server],
284 [disallow recursive make communication during -jN]),
285 [make_cv_job_server="$enableval" user_job_server="$enableval"],
286 [make_cv_job_server="yes"])
289 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
290 no/no) has_wait_nohang=no ;;
293 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
294 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
295 [[return SA_RESTART;]])],
296 [make_cv_sa_restart=yes],
297 [make_cv_sa_restart=no])])
299 if test "$make_cv_sa_restart" != no; then
300 AC_DEFINE(HAVE_SA_RESTART, 1,
301 [Define to 1 if <signal.h> defines the SA_RESTART constant.])
304 # enable make_cv_sa_restart for OS/2 so that the jobserver will be enabled,
305 # but do it after HAVE_SA_RESTART has been defined.
307 os2*) make_cv_sa_restart=yes ;;
310 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
312 AC_DEFINE(MAKE_JOBSERVER, 1,
313 [Define to 1 to enable job server support in GNU make.]);;
316 # if we have both lstat() and readlink() then we can support symlink
318 case "$ac_cv_func_lstat/$ac_cv_func_readlink" in
320 AC_DEFINE(MAKE_SYMLINKS, 1,
321 [Define to 1 to enable symbolic link timestamp checking.]);;
324 # Find the SCCS commands, so we can include them in our default rules.
326 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
327 if test -f /usr/sccs/get; then
328 make_cv_path_sccs_get=/usr/sccs/get
330 make_cv_path_sccs_get=get
332 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
333 [Define to the name of the SCCS 'get' command.])
335 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
336 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
337 test -f s.conftest; then
338 # We successfully created an SCCS file.
339 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
340 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
341 test -f conftoast; then
342 make_cv_sys_get_minus_G=yes
344 make_cv_sys_get_minus_G=no
346 case "$make_cv_sys_get_minus_G" in
347 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
348 [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.]);;
351 rm -f s.conftest conftoast
353 # Check the system to see if it provides GNU glob. If not, use our
355 AC_MSG_CHECKING(if system libc has GNU glob)
356 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
357 AC_EGREP_CPP(gnu glob,[
358 #include <features.h>
362 #define GLOB_INTERFACE_VERSION 1
363 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
364 # include <gnu-versions.h>
365 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
369 ], [AC_MSG_RESULT(yes)
370 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
371 make_cv_sys_gnu_glob=no])])
372 if test "$make_cv_sys_gnu_glob" = no; then
373 GLOBINC='-I$(srcdir)/glob'
374 GLOBLIB=glob/libglob.a
379 # Tell automake about this, so it can build the right .c files.
380 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
382 # Let the makefile know what our build host is
384 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
389 AM_CONDITIONAL([WINDOWSENV], false)
393 AM_CONDITIONAL(WINDOWSENV, true)
395 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
396 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
400 AC_DEFINE_UNQUOTED(PATH_SEPARATOR_CHAR,'$PATH_SEPARATOR',[Define to the character that separates directories in PATH.])
402 # Include the Maintainer's Makefile section, if it's here.
404 MAINT_MAKEFILE=/dev/null
405 if test -r "$srcdir/maintMakefile"; then
406 MAINT_MAKEFILE="$srcdir/maintMakefile"
408 AC_SUBST_FILE(MAINT_MAKEFILE)
410 # Allow building with dmalloc
413 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
417 # Sanity check and inform the user of what we found
419 case "$make_badcust" in
421 echo "WARNING: --with-customs specified but no customs.h could be found;"
422 echo " disabling Customs support."
426 case "$with_customs" in
428 *) if test -f "$with_customs/lib/libcustoms.a"; then
432 echo "WARNING: '$with_customs/lib' does not appear to contain the"
433 echo " Customs library. You must build and install Customs"
434 echo " before compiling GNU make."
439 case "$has_wait_nohang" in
441 echo "WARNING: Your system has neither waitpid() nor wait3()."
442 echo " Without one of these, signal handling is unreliable."
443 echo " You should be aware that running GNU make with -j"
444 echo " could result in erratic behavior."
448 case "$make_cv_job_server/$user_job_server" in
450 echo "WARNING: Make job server requires a POSIX-ish system that"
451 echo " supports the pipe(), sigaction(), and either"
452 echo " waitpid() or wait3() functions. Your system doesn't"
453 echo " appear to provide one or more of those."
454 echo " Disabling job server support."
459 # Specify what files are to be created.
460 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile w32/Makefile)
466 # We only generate the build.sh if we have a build.sh.in; we won't have
467 # one before we've created a distribution.
468 if test -f "$srcdir/build.sh.in"; then
469 ./config.status --file build.sh
474 dnl comment-start: "dnl "
476 dnl comment-start-skip: "\\bdnl\\b\\s *"
477 dnl compile-command: "make configure config.h.in"