1 # Process this file with autoconf to produce a configure script.
3 # Copyright (C) 1993-2012 Free Software Foundation, Inc.
4 # This file is part of GNU Make.
6 # GNU Make is free software; you can redistribute it and/or modify it under
7 # the terms of the GNU General Public License as published by the Free Software
8 # Foundation; either version 3 of the License, or (at your option) any later
11 # GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 # FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16 # You should have received a copy of the GNU General Public License along with
17 # this program. If not, see <http://www.gnu.org/licenses/>.
19 AC_INIT([GNU make],[3.82.90],[bug-make@gnu.org])
22 AC_REVISION([$Id: configure.in,v 1.167 2012/10/29 07:05:27 psmith Exp $])
25 AC_CONFIG_AUX_DIR([config])
26 AC_CONFIG_SRCDIR([vpath.c])
27 AC_CONFIG_HEADERS([config.h])
30 AM_INIT_AUTOMAKE([1.9])
32 # Checks for programs.
37 AC_CHECK_PROG([AR], [ar], [ar], [ar])
38 # Perl is needed for the test suite (only)
39 AC_CHECK_PROG([PERL], [perl], [perl], [perl])
41 # Specialized system macros
47 # Enable gettext, in "external" mode.
49 AM_GNU_GETTEXT_VERSION([0.18.1])
50 AM_GNU_GETTEXT([external])
52 # This test must come as early as possible after the compiler configuration
53 # tests, because the choice of the file model can (in principle) affect
54 # whether functions and headers are available, whether they work, etc.
57 # Checks for libraries.
58 AC_SEARCH_LIBS([getpwnam], [sun])
60 # Checks for header files.
65 AC_CHECK_HEADERS([stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
66 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h])
68 # Set a flag if we have an ANSI C compiler
69 AS_IF([test "$ac_cv_prog_cc_stdc" != no],
70 [ AC_DEFINE([HAVE_ANSI_COMPILER], [1],
71 [Define to 1 if your compiler conforms to the ANSI C standard.])
75 # Determine what kind of variadic function calls we support
76 AC_CHECK_HEADERS([stdarg.h varargs.h], [break])
84 # Find some definition for uintmax_t
86 AC_CHECK_TYPE([uintmax_t],[],
87 [ uintmax_t="unsigned long"
88 AC_CHECK_TYPE([unsigned long long],[uintmax_t="unsigned long long"])
89 AC_DEFINE_UNQUOTED([uintmax_t], [$uintmax_t],
90 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])
93 # Find out whether our struct stat returns nanosecond resolution timestamps.
95 AC_STRUCT_ST_MTIM_NSEC
96 AC_CACHE_CHECK([whether to use high resolution file timestamps],
97 [make_cv_file_timestamp_hi_res],
98 [ make_cv_file_timestamp_hi_res=no
99 AS_IF([test "$ac_cv_struct_st_mtim_nsec" != no],
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])
107 AS_IF([test "$make_cv_file_timestamp_hi_res" = yes], [val=1], [val=0])
108 AC_DEFINE_UNQUOTED([FILE_TIMESTAMP_HI_RES], [$val],
109 [Use high resolution file timestamps if nonzero.])
111 AS_IF([test "$make_cv_file_timestamp_hi_res" = yes],
112 [ # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
113 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
114 AC_SEARCH_LIBS([clock_gettime], [rt posix4])
115 AS_IF([test "$ac_cv_search_clock_gettime" != no],
116 [ AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
117 [Define to 1 if you have the clock_gettime function.])
121 # Check for DOS-style pathnames.
124 # See if we have a standard version of gettimeofday(). Since actual
125 # implementations can differ, just make sure we have the most common
127 AC_CACHE_CHECK([for standard gettimeofday], [ac_cv_func_gettimeofday],
128 [ac_cv_func_gettimeofday=no
129 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
132 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
133 exit (gettimeofday (&t, 0) != 0
134 || t.tv_sec < 0 || t.tv_usec < 0);
136 [ac_cv_func_gettimeofday=yes],
137 [ac_cv_func_gettimeofday=no],
138 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
139 AS_IF([test "$ac_cv_func_gettimeofday" = yes],
140 [ AC_DEFINE([HAVE_GETTIMEOFDAY], [1],
141 [Define to 1 if you have a standard gettimeofday function])
144 AC_CHECK_FUNCS([strdup strndup mkstemp mktemp fdopen fileno \
145 dup2 getcwd realpath sigsetmask sigaction \
146 getgroups seteuid setegid setlinebuf setreuid setregid \
147 getrlimit setrlimit setvbuf pipe strerror strsignal \
148 lstat readlink atexit])
150 # We need to check declarations, not just existence, because on Tru64 this
151 # function is not declared without special flags, which themselves cause
152 # other problems. We'll just use our own.
153 AC_CHECK_DECLS([bsd_signal], [], [], [[#define _GNU_SOURCE 1
154 #include <signal.h>]])
156 AC_FUNC_SETVBUF_REVERSED
158 # Rumor has it that strcasecmp lives in -lresolv on some odd systems.
159 # It doesn't hurt much to use our own if we can't find it so I don't
160 # make the effort here.
161 AC_CHECK_FUNCS([strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp])
163 # strcoll() is used by the GNU glob library
169 AC_FUNC_CLOSEDIR_VOID
171 # See if the user wants to add (or not) GNU Guile support
173 AC_ARG_WITH([guile], [AS_HELP_STRING([--with-guile],
174 [Support GNU Guile for embedded scripting])])
176 # For some strange reason, at least on Ubuntu, each version of Guile
177 # comes with it's own PC file so we have to specify them as individual
179 AS_IF([test "x$with_guile" != xno],
180 [ PKG_CHECK_MODULES([GUILE], [guile-2.0], [have_guile=yes],
181 [PKG_CHECK_MODULES([GUILE], [guile-1.8], [have_guile=yes],
185 AS_IF([test "$have_guile" = yes],
186 [AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])])
188 AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = yes])
192 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
193 # doesn't. So, we will.
195 AS_IF([test "$ac_cv_header_nlist_h" = yes],
196 [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
198 nl.n_name = "string";
200 [make_cv_nlist_struct=yes],
201 [make_cv_nlist_struct=no])
202 AS_IF([test "$make_cv_nlist_struct" = yes],
203 [ AC_DEFINE([NLIST_STRUCT], [1],
204 [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
208 AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
211 /* NetBSD declares sys_siglist in unistd.h. */
218 # Check out the wait reality.
219 AC_CHECK_HEADERS([sys/wait.h],[],[],[[#include <sys/types.h>]])
220 AC_CHECK_FUNCS([waitpid wait3])
221 AC_CACHE_CHECK([for union wait], [make_cv_union_wait],
222 [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
223 #include <sys/wait.h>]],
224 [[union wait status; int pid; pid = wait (&status);
226 /* Some POSIXoid systems have both the new-style macros and the old
227 union wait type, and they do not work together. If union wait
228 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
229 if (WEXITSTATUS (status) != 0) pid = -1;
231 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
232 -- blow chunks here --
236 /* Make sure union wait works with waitpid. */
237 pid = waitpid (-1, &status, 0);
240 [make_cv_union_wait=yes],
241 [make_cv_union_wait=no])
243 AS_IF([test "$make_cv_union_wait" = yes],
244 [ AC_DEFINE([HAVE_UNION_WAIT], [1],
245 [Define to 1 if you have the 'union wait' type in <sys/wait.h>.])
249 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
250 AS_IF([test "$PATH_SEPARATOR" = ';'],
251 [ AC_DEFINE([HAVE_DOS_PATHS], [1],
252 [Define to 1 if your system requires backslashes or drive specs in pathnames.])
255 # See if the user wants to use pmake's "customs" distributed build capability
256 AC_SUBST([REMOTE]) REMOTE=stub
258 AC_ARG_WITH([customs],
259 [ AC_HELP_STRING([--with-customs=DIR],
260 [enable remote jobs via Customs--see README.customs])],
261 [ AS_CASE([$withval], [n|no], [:],
262 [make_cppflags="$CPPFLAGS"
265 [CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
266 make_ldflags="$LDFLAGS -L$with_customs/lib"])
268 AC_CHECK_HEADER([customs.h],
271 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
273 CPPFLAGS="$make_cppflags" make_badcust=yes])
277 # Tell automake about this, so it can include the right .c files.
278 AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true])
280 # See if the user asked to handle case insensitive file systems.
281 AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names])
282 AC_ARG_ENABLE([case-insensitive-file-system],
283 AC_HELP_STRING([--enable-case-insensitive-file-system],
284 [assume file systems are case insensitive]),
285 [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])])
287 # See if we can handle the job server feature, and if the user wants it.
288 AC_ARG_ENABLE([job-server],
289 AC_HELP_STRING([--disable-job-server],
290 [disallow recursive make communication during -jN]),
291 [make_cv_job_server="$enableval" user_job_server="$enableval"],
292 [make_cv_job_server="yes"])
294 AS_IF([test "$ac_cv_func_waitpid" = no && test "$ac_cv_func_wait3" = no],
295 [has_wait_nohang=no],
296 [has_wait_nohang=yes])
298 AC_CACHE_CHECK([for SA_RESTART], [make_cv_sa_restart], [
299 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
300 [[return SA_RESTART;]])],
301 [make_cv_sa_restart=yes],
302 [make_cv_sa_restart=no])])
304 AS_IF([test "$make_cv_sa_restart" != no],
305 [ AC_DEFINE([HAVE_SA_RESTART], [1],
306 [Define to 1 if <signal.h> defines the SA_RESTART constant.])
309 # Only allow jobserver on systems that support it
310 AS_CASE([/$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/],
311 [*/no/*], [make_cv_job_server=no])
313 # Also supported on OS2 and MinGW
314 AS_CASE([$host_os], [os2*|mingw*], [make_cv_job_server=yes])
316 # If we support it and the user didn't disable it, build with jobserver
317 AS_CASE([/$make_cv_job_server/$user_job_server/],
318 [*/no/*], [: no jobserver],
319 [AC_DEFINE(MAKE_JOBSERVER, 1,
320 [Define to 1 to enable job server support in GNU make.])
323 # If dl*() functions are supported we can enable the load operation
324 AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [],
325 [[#include <dlfcn.h>]])
327 AC_ARG_ENABLE([load],
328 AC_HELP_STRING([--disable-load],
329 [disable support for the 'load' operation]),
330 [make_cv_load="$enableval" user_load="$enableval"],
331 [make_cv_load="yes"])
333 AS_CASE([/$ac_cv_func_dlopen/$ac_cv_func_dlsym/$ac_cv_func_dlerror/],
334 [*/no/*], [make_cv_load=no])
336 AS_CASE([/$make_cv_load/$user_load/],
337 [*/no/*], [make_cv_load=no],
338 [AC_DEFINE(MAKE_LOAD, 1,
339 [Define to 1 to enable 'load' support in GNU make.])
343 AS_IF([test "$make_cv_load" = yes], [
344 AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=])
347 # If we want load support, we might need to link with export-dynamic.
348 # See if we can figure it out. Unfortunately this is very difficult.
349 # For example passing -rdynamic to the SunPRO linker gives a warning
350 # but succeeds and creates a shared object, not an executable!
351 AS_IF([test "$make_cv_load" = yes], [
352 AC_MSG_CHECKING([If the linker accepts -Wl,--export-dynamic])
353 old_LDFLAGS="$LDFLAGS"
354 LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
355 AC_LINK_IFELSE([int main(){}],
356 [AC_MSG_RESULT([yes])
357 AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])],
359 AC_MSG_CHECKING([If the linker accepts -rdynamic])
360 LDFLAGS="$old_LDFLAGS -rdynamic"
361 AC_LINK_IFELSE([int main(){}],
362 [AC_MSG_RESULT([yes])
363 AC_SUBST([AM_LDFLAGS], [-rdynamic])],
364 [AC_MSG_RESULT([no])])
366 LDFLAGS="$old_LDFLAGS"
369 # if we have both lstat() and readlink() then we can support symlink
371 AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes],
372 [ AC_DEFINE([MAKE_SYMLINKS], [1],
373 [Define to 1 to enable symbolic link timestamp checking.])
376 # Find the SCCS commands, so we can include them in our default rules.
378 AC_CACHE_CHECK([for location of SCCS get command], [make_cv_path_sccs_get], [
379 AS_IF([test -f /usr/sccs/get],
380 [make_cv_path_sccs_get=/usr/sccs/get],
381 [make_cv_path_sccs_get=get])
383 AC_DEFINE_UNQUOTED([SCCS_GET], ["$make_cv_path_sccs_get"],
384 [Define to the name of the SCCS 'get' command.])
386 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
387 AS_IF([(/usr/sccs/admin -n s.conftest || admin -n s.conftest) >/dev/null 2>&1 &&
389 [ # We successfully created an SCCS file.
390 AC_CACHE_CHECK([if SCCS get command understands -G], [make_cv_sys_get_minus_G],
391 [AS_IF([$make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
393 [make_cv_sys_get_minus_G=yes],
394 [make_cv_sys_get_minus_G=no])
396 AS_IF([test "$make_cv_sys_get_minus_G" = yes],
397 [AC_DEFINE([SCCS_GET_MINUS_G], [1],
398 [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.])
401 rm -f s.conftest conftoast
403 # Check the system to see if it provides GNU glob. If not, use our
405 AC_CACHE_CHECK([if system libc has GNU glob], [make_cv_sys_gnu_glob],
406 [ AC_EGREP_CPP([gnu glob],[
407 #include <features.h>
411 #define GLOB_INTERFACE_VERSION 1
412 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
413 # include <gnu-versions.h>
414 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
418 [make_cv_sys_gnu_glob=yes],
419 [make_cv_sys_gnu_glob=no])])
420 AS_IF([test "$make_cv_sys_gnu_glob" = no],
421 [ GLOBINC='-I$(srcdir)/glob'
422 GLOBLIB=glob/libglob.a
427 # Tell automake about this, so it can build the right .c files.
428 AM_CONDITIONAL([USE_LOCAL_GLOB], [test "$make_cv_sys_gnu_glob" = no])
430 # Let the makefile know what our build host is
432 AC_DEFINE_UNQUOTED([MAKE_HOST],["$host"],[Build host information.])
434 AC_SUBST([MAKE_HOST])
437 AM_CONDITIONAL([WINDOWSENV], [false])
441 [AM_CONDITIONAL([WINDOWSENV], [true])
443 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
444 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
447 AC_DEFINE_UNQUOTED([PATH_SEPARATOR_CHAR],['$PATH_SEPARATOR'],
448 [Define to the character that separates directories in PATH.])
450 # Include the Maintainer's Makefile section, if it's here.
452 MAINT_MAKEFILE=/dev/null
453 AS_IF([test -r "$srcdir/maintMakefile"],
454 [ MAINT_MAKEFILE="$srcdir/maintMakefile"
456 AC_SUBST_FILE([MAINT_MAKEFILE])
458 # Allow building with dmalloc
461 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
465 # Sanity check and inform the user of what we found
467 AS_IF([test "x$make_badcust" = xyes], [
469 echo "WARNING: --with-customs specified but no customs.h could be found;"
470 echo " disabling Customs support."
474 AS_CASE([$with_customs],
475 [""|n|no|y|ye|yes], [:],
476 [AS_IF([test -f "$with_customs/lib/libcustoms.a"], [:],
478 echo "WARNING: '$with_customs/lib' does not appear to contain the"
479 echo " Customs library. You must build and install Customs"
480 echo " before compiling GNU make."
484 AS_IF([test "x$has_wait_nohang" = xno],
486 echo "WARNING: Your system has neither waitpid() nor wait3()."
487 echo " Without one of these, signal handling is unreliable."
488 echo " You should be aware that running GNU make with -j"
489 echo " could result in erratic behavior."
493 AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes],
495 echo "WARNING: Make job server requires a POSIX-ish system that"
496 echo " supports the pipe(), sigaction(), and either"
497 echo " waitpid() or wait3() functions. Your system doesn't"
498 echo " appear to provide one or more of those."
499 echo " Disabling job server support."
503 AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes],
505 echo "WARNING: 'load' support requires a POSIX-ish system that"
506 echo " supports the dlopen(), dlsym(), and dlerror() functions."
507 echo " Your system doesn't appear to provide one or more of these."
508 echo " Disabling 'load' support."
512 # Specify what files are to be created.
513 AC_CONFIG_FILES([Makefile glob/Makefile po/Makefile.in config/Makefile \
514 doc/Makefile w32/Makefile])
520 # We only generate the build.sh if we have a build.sh.in; we won't have
521 # one before we've created a distribution.
522 AS_IF([test -f "$srcdir/build.sh.in"],
523 [ ./config.status --file build.sh
528 dnl comment-start: "dnl "
530 dnl comment-start-skip: "\\bdnl\\b\\s *"
531 dnl compile-command: "make configure config.h.in"