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 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],[3.81.90],[bug-make@gnu.org])
23 AC_REVISION([[$Id: configure.in,v 1.148 2007/07/04 19:35:17 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 mkstemp mktemp fdopen \
151 bsd_signal dup2 getcwd realpath sigsetmask sigaction \
152 getgroups seteuid setegid setlinebuf setreuid setregid \
153 getrlimit setrlimit setvbuf pipe strerror strsignal \
154 lstat readlink atexit)
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 strcmpi stricmp)
163 # strcoll() is used by the GNU glob library
169 AC_FUNC_CLOSEDIR_VOID
173 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
174 # doesn't. So, we will.
176 if test "$ac_cv_header_nlist_h" = yes; then
177 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
179 nl.n_name = "string";
181 [make_cv_nlist_struct=yes],
182 [make_cv_nlist_struct=no])
183 if test "$make_cv_nlist_struct" = yes; then
184 AC_DEFINE(NLIST_STRUCT, 1,
185 [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
189 AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
192 /* NetBSD declares sys_siglist in unistd.h. */
199 # Check out the wait reality.
200 AC_CHECK_HEADERS(sys/wait.h,,,[[#include <sys/types.h>]])
201 AC_CHECK_FUNCS(waitpid wait3)
202 AC_MSG_CHECKING(for union wait)
203 AC_CACHE_VAL(make_cv_union_wait, [dnl
204 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
205 #include <sys/wait.h>]],
206 [[union wait status; int pid; pid = wait (&status);
208 /* Some POSIXoid systems have both the new-style macros and the old
209 union wait type, and they do not work together. If union wait
210 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
211 if (WEXITSTATUS (status) != 0) pid = -1;
213 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
214 -- blow chunks here --
218 /* Make sure union wait works with waitpid. */
219 pid = waitpid (-1, &status, 0);
222 [make_cv_union_wait=yes],
223 [make_cv_union_wait=no])])
224 if test "$make_cv_union_wait" = yes; then
225 AC_DEFINE(HAVE_UNION_WAIT, 1,
226 [Define to 1 if you have the \`union wait' type in <sys/wait.h>.])
228 AC_MSG_RESULT($make_cv_union_wait)
231 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
232 if test "$PATH_SEPARATOR" = ';'; then
233 AC_DEFINE(HAVE_DOS_PATHS, 1,
234 [Define to 1 if your system requires backslashes or drive specs in pathnames.])
238 # See if the user wants to use pmake's "customs" distributed build capability
240 AC_SUBST(REMOTE) REMOTE=stub
243 AC_HELP_STRING([--with-customs=DIR],
244 [enable remote jobs via Customs--see README.customs]),
247 *) make_cppflags="$CPPFLAGS"
250 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
251 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
254 AC_CHECK_HEADER(customs.h,
257 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
259 CPPFLAGS="$make_cppflags" make_badcust=yes])
262 # Tell automake about this, so it can include the right .c files.
263 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
265 # See if the user asked to handle case insensitive file systems.
267 AH_TEMPLATE(HAVE_CASE_INSENSITIVE_FS, [Use case insensitive file names])
268 AC_ARG_ENABLE(case-insensitive-file-system,
269 AC_HELP_STRING([--enable-case-insensitive-file-system],
270 [assume file systems are case insensitive]),
272 yes) AC_DEFINE(HAVE_CASE_INSENSITIVE_FS) ;;
275 # See if we can handle the job server feature, and if the user wants it.
277 AC_ARG_ENABLE(job-server,
278 AC_HELP_STRING([--disable-job-server],
279 [disallow recursive make communication during -jN]),
280 [make_cv_job_server="$enableval" user_job_server="$enableval"],
281 [make_cv_job_server="yes"])
284 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
285 no/no) has_wait_nohang=no ;;
288 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
289 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
290 [[return SA_RESTART;]])],
291 [make_cv_sa_restart=yes],
292 [make_cv_sa_restart=no])])
294 if test "$make_cv_sa_restart" != no; then
295 AC_DEFINE(HAVE_SA_RESTART, 1,
296 [Define to 1 if <signal.h> defines the SA_RESTART constant.])
299 # enable make_cv_sa_restart for OS/2 so that the jobserver will be enabled,
300 # but do it after HAVE_SA_RESTART has been defined.
302 os2*) make_cv_sa_restart=yes ;;
305 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
307 AC_DEFINE(MAKE_JOBSERVER, 1,
308 [Define to 1 to enable job server support in GNU make.]);;
311 # if we have both lstat() and readlink() then we can support symlink
313 case "$ac_cv_func_lstat/$ac_cv_func_readlink" in
315 AC_DEFINE(MAKE_SYMLINKS, 1,
316 [Define to 1 to enable symbolic link timestamp checking.]);;
319 # Find the SCCS commands, so we can include them in our default rules.
321 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
322 if test -f /usr/sccs/get; then
323 make_cv_path_sccs_get=/usr/sccs/get
325 make_cv_path_sccs_get=get
327 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
328 [Define to the name of the SCCS 'get' command.])
330 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
331 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
332 test -f s.conftest; then
333 # We successfully created an SCCS file.
334 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
335 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
336 test -f conftoast; then
337 make_cv_sys_get_minus_G=yes
339 make_cv_sys_get_minus_G=no
341 case "$make_cv_sys_get_minus_G" in
342 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
343 [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.]);;
346 rm -f s.conftest conftoast
348 # Check the system to see if it provides GNU glob. If not, use our
351 AC_MSG_CHECKING(if system libc has GNU glob)
352 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
353 AC_EGREP_CPP(gnu glob,[
354 #include <features.h>
358 #define GLOB_INTERFACE_VERSION 1
359 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
360 # include <gnu-versions.h>
361 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
365 ], [AC_MSG_RESULT(yes)
366 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
367 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
368 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
369 make_cv_sys_gnu_glob=no])])
370 # Tell automake about this, so it can build the right .c files.
371 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
373 # Let the makefile know what our build host is
375 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
380 AM_CONDITIONAL([WINDOWSENV], false)
384 AM_CONDITIONAL(WINDOWSENV, true)
386 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
387 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
391 AC_DEFINE_UNQUOTED(PATH_SEPARATOR_CHAR,'$PATH_SEPARATOR',[Define to the character that separates directories in PATH.])
393 # Include the Maintainer's Makefile section, if it's here.
395 MAINT_MAKEFILE=/dev/null
396 if test -r "$srcdir/maintMakefile"; then
397 MAINT_MAKEFILE="$srcdir/maintMakefile"
399 AC_SUBST_FILE(MAINT_MAKEFILE)
401 # Allow building with dmalloc
404 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
408 # Sanity check and inform the user of what we found
410 case "$make_badcust" in
412 echo "WARNING: --with-customs specified but no customs.h could be found;"
413 echo " disabling Customs support."
417 case "$with_customs" in
419 *) if test -f "$with_customs/lib/libcustoms.a"; then
423 echo "WARNING: '$with_customs/lib' does not appear to contain the"
424 echo " Customs library. You must build and install Customs"
425 echo " before compiling GNU make."
430 case "$has_wait_nohang" in
432 echo "WARNING: Your system has neither waitpid() nor wait3()."
433 echo " Without one of these, signal handling is unreliable."
434 echo " You should be aware that running GNU make with -j"
435 echo " could result in erratic behavior."
439 case "$make_cv_job_server/$user_job_server" in
441 echo "WARNING: Make job server requires a POSIX-ish system that"
442 echo " supports the pipe(), sigaction(), and either"
443 echo " waitpid() or wait3() functions. Your system doesn't"
444 echo " appear to provide one or more of those."
445 echo " Disabling job server support."
450 # Specify what files are to be created.
451 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile w32/Makefile)
457 # We only generate the build.sh if we have a build.sh.in; we won't have
458 # one before we've created a distribution.
459 if test -f "$srcdir/build.sh.in"; then
460 ./config.status --file build.sh
465 dnl comment-start: "dnl "
467 dnl comment-start-skip: "\\bdnl\\b\\s *"
468 dnl compile-command: "make configure config.h.in"