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],[bug-make@gnu.org])
23 AC_REVISION([[$Id: configure.in,v 1.156 2010/07/28 05:39:50 psmith Exp $]])
26 AC_CONFIG_AUX_DIR(config)
27 AC_CONFIG_SRCDIR(vpath.c)
28 AC_CONFIG_HEADERS(config.h)
31 AM_INIT_AUTOMAKE([1.9])
33 # Checks for programs.
38 AC_CHECK_PROG(AR, ar, ar, ar)
39 # Perl is needed for the test suite (only)
40 AC_CHECK_PROG(PERL, perl, perl, perl)
42 # Specialized system macros
48 # Enable gettext, in "external" mode.
50 AM_GNU_GETTEXT_VERSION(0.14.1)
51 AM_GNU_GETTEXT([external])
53 # This test must come as early as possible after the compiler configuration
54 # tests, because the choice of the file model can (in principle) affect
55 # whether functions and headers are available, whether they work, etc.
58 # Checks for libraries.
59 AC_SEARCH_LIBS(getpwnam, [sun])
61 # Checks for header files.
66 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
67 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h \
68 sys/user.h linux/binfmts.h)
70 # Set a flag if we have an ANSI C compiler
71 if test "$ac_cv_prog_cc_stdc" != no; then
72 AC_DEFINE(HAVE_ANSI_COMPILER, 1,
73 [Define to 1 if your compiler conforms to the ANSI C standard.])
77 # Determine what kind of variadic function calls we support
78 AC_CHECK_HEADERS(stdarg.h varargs.h, break)
86 # Find some definition for uintmax_t
88 AC_CHECK_TYPE(uintmax_t,,[
89 uintmax_t="unsigned long"
90 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
91 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
92 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
94 # Find out whether our struct stat returns nanosecond resolution timestamps.
96 AC_STRUCT_ST_MTIM_NSEC
97 AC_MSG_CHECKING([whether to use high resolution file timestamps])
98 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
99 make_cv_file_timestamp_hi_res=no
100 if test "$ac_cv_struct_st_mtim_nsec" != no; then
101 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
103 # include <inttypes.h>
105 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
106 [make_cv_file_timestamp_hi_res=yes],
109 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
110 if test "$make_cv_file_timestamp_hi_res" = yes; then
115 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
116 [Use high resolution file timestamps if nonzero.])
118 if test "$make_cv_file_timestamp_hi_res" = yes; then
119 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
120 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
121 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
122 if test "$ac_cv_search_clock_gettime" != no; then
123 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
124 [Define to 1 if you have the clock_gettime function.])
128 # Check for DOS-style pathnames.
131 # See if we have a standard version of gettimeofday(). Since actual
132 # implementations can differ, just make sure we have the most common
134 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
135 [ac_cv_func_gettimeofday=no
136 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
139 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
140 exit (gettimeofday (&t, 0) != 0
141 || t.tv_sec < 0 || t.tv_usec < 0);
143 [ac_cv_func_gettimeofday=yes],
144 [ac_cv_func_gettimeofday=no],
145 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
146 if test "$ac_cv_func_gettimeofday" = yes; then
147 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
148 [Define to 1 if you have a standard gettimeofday function])
151 AC_CHECK_FUNCS( strdup strndup mkstemp mktemp fdopen fileno \
152 dup2 getcwd realpath sigsetmask sigaction \
153 getgroups seteuid setegid setlinebuf setreuid setregid \
154 getrlimit setrlimit setvbuf pipe strerror strsignal \
155 lstat readlink atexit)
157 # We need to check declarations, not just existence, because on Tru64 this
158 # function is not declared without special flags, which themselves cause
159 # other problems. We'll just use our own.
160 AC_CHECK_DECLS([bsd_signal], [], [], [[#include <signal.h>]])
162 AC_FUNC_SETVBUF_REVERSED
164 # Rumor has it that strcasecmp lives in -lresolv on some odd systems.
165 # It doesn't hurt much to use our own if we can't find it so I don't
166 # make the effort here.
167 AC_CHECK_FUNCS(strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp)
169 # strcoll() is used by the GNU glob library
175 AC_FUNC_CLOSEDIR_VOID
179 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
180 # doesn't. So, we will.
182 if test "$ac_cv_header_nlist_h" = yes; then
183 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
185 nl.n_name = "string";
187 [make_cv_nlist_struct=yes],
188 [make_cv_nlist_struct=no])
189 if test "$make_cv_nlist_struct" = yes; then
190 AC_DEFINE(NLIST_STRUCT, 1,
191 [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
195 AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
198 /* NetBSD declares sys_siglist in unistd.h. */
205 # Check out the wait reality.
206 AC_CHECK_HEADERS(sys/wait.h,,,[[#include <sys/types.h>]])
207 AC_CHECK_FUNCS(waitpid wait3)
208 AC_MSG_CHECKING(for union wait)
209 AC_CACHE_VAL(make_cv_union_wait, [dnl
210 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
211 #include <sys/wait.h>]],
212 [[union wait status; int pid; pid = wait (&status);
214 /* Some POSIXoid systems have both the new-style macros and the old
215 union wait type, and they do not work together. If union wait
216 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
217 if (WEXITSTATUS (status) != 0) pid = -1;
219 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
220 -- blow chunks here --
224 /* Make sure union wait works with waitpid. */
225 pid = waitpid (-1, &status, 0);
228 [make_cv_union_wait=yes],
229 [make_cv_union_wait=no])])
230 if test "$make_cv_union_wait" = yes; then
231 AC_DEFINE(HAVE_UNION_WAIT, 1,
232 [Define to 1 if you have the \`union wait' type in <sys/wait.h>.])
234 AC_MSG_RESULT($make_cv_union_wait)
237 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
238 if test "$PATH_SEPARATOR" = ';'; then
239 AC_DEFINE(HAVE_DOS_PATHS, 1,
240 [Define to 1 if your system requires backslashes or drive specs in pathnames.])
244 # See if the user wants to use pmake's "customs" distributed build capability
246 AC_SUBST(REMOTE) REMOTE=stub
249 AC_HELP_STRING([--with-customs=DIR],
250 [enable remote jobs via Customs--see README.customs]),
253 *) make_cppflags="$CPPFLAGS"
256 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
257 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
260 AC_CHECK_HEADER(customs.h,
263 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
265 CPPFLAGS="$make_cppflags" make_badcust=yes])
268 # Tell automake about this, so it can include the right .c files.
269 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
271 # See if the user asked to handle case insensitive file systems.
273 AH_TEMPLATE(HAVE_CASE_INSENSITIVE_FS, [Use case insensitive file names])
274 AC_ARG_ENABLE(case-insensitive-file-system,
275 AC_HELP_STRING([--enable-case-insensitive-file-system],
276 [assume file systems are case insensitive]),
278 yes) AC_DEFINE(HAVE_CASE_INSENSITIVE_FS) ;;
281 # See if we can handle the job server feature, and if the user wants it.
283 AC_ARG_ENABLE(job-server,
284 AC_HELP_STRING([--disable-job-server],
285 [disallow recursive make communication during -jN]),
286 [make_cv_job_server="$enableval" user_job_server="$enableval"],
287 [make_cv_job_server="yes"])
290 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
291 no/no) has_wait_nohang=no ;;
294 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
295 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
296 [[return SA_RESTART;]])],
297 [make_cv_sa_restart=yes],
298 [make_cv_sa_restart=no])])
300 if test "$make_cv_sa_restart" != no; then
301 AC_DEFINE(HAVE_SA_RESTART, 1,
302 [Define to 1 if <signal.h> defines the SA_RESTART constant.])
305 # enable make_cv_sa_restart for OS/2 so that the jobserver will be enabled,
306 # but do it after HAVE_SA_RESTART has been defined.
308 os2*) make_cv_sa_restart=yes ;;
311 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
313 AC_DEFINE(MAKE_JOBSERVER, 1,
314 [Define to 1 to enable job server support in GNU make.]);;
317 # if we have both lstat() and readlink() then we can support symlink
319 case "$ac_cv_func_lstat/$ac_cv_func_readlink" in
321 AC_DEFINE(MAKE_SYMLINKS, 1,
322 [Define to 1 to enable symbolic link timestamp checking.]);;
325 # Find the SCCS commands, so we can include them in our default rules.
327 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
328 if test -f /usr/sccs/get; then
329 make_cv_path_sccs_get=/usr/sccs/get
331 make_cv_path_sccs_get=get
333 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
334 [Define to the name of the SCCS 'get' command.])
336 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
337 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
338 test -f s.conftest; then
339 # We successfully created an SCCS file.
340 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
341 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
342 test -f conftoast; then
343 make_cv_sys_get_minus_G=yes
345 make_cv_sys_get_minus_G=no
347 case "$make_cv_sys_get_minus_G" in
348 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
349 [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.]);;
352 rm -f s.conftest conftoast
354 # Check the system to see if it provides GNU glob. If not, use our
356 AC_MSG_CHECKING(if system libc has GNU glob)
357 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
358 AC_EGREP_CPP(gnu glob,[
359 #include <features.h>
363 #define GLOB_INTERFACE_VERSION 1
364 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
365 # include <gnu-versions.h>
366 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
370 ], [AC_MSG_RESULT(yes)
371 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
372 make_cv_sys_gnu_glob=no])])
373 if test "$make_cv_sys_gnu_glob" = no; then
374 GLOBINC='-I$(srcdir)/glob'
375 GLOBLIB=glob/libglob.a
380 # Tell automake about this, so it can build the right .c files.
381 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
383 # Let the makefile know what our build host is
385 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
390 AM_CONDITIONAL([WINDOWSENV], false)
394 AM_CONDITIONAL(WINDOWSENV, true)
396 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
397 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
401 AC_DEFINE_UNQUOTED(PATH_SEPARATOR_CHAR,'$PATH_SEPARATOR',[Define to the character that separates directories in PATH.])
403 # Include the Maintainer's Makefile section, if it's here.
405 MAINT_MAKEFILE=/dev/null
406 if test -r "$srcdir/maintMakefile"; then
407 MAINT_MAKEFILE="$srcdir/maintMakefile"
409 AC_SUBST_FILE(MAINT_MAKEFILE)
411 # Allow building with dmalloc
414 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
418 # Sanity check and inform the user of what we found
420 case "$make_badcust" in
422 echo "WARNING: --with-customs specified but no customs.h could be found;"
423 echo " disabling Customs support."
427 case "$with_customs" in
429 *) if test -f "$with_customs/lib/libcustoms.a"; then
433 echo "WARNING: '$with_customs/lib' does not appear to contain the"
434 echo " Customs library. You must build and install Customs"
435 echo " before compiling GNU make."
440 case "$has_wait_nohang" in
442 echo "WARNING: Your system has neither waitpid() nor wait3()."
443 echo " Without one of these, signal handling is unreliable."
444 echo " You should be aware that running GNU make with -j"
445 echo " could result in erratic behavior."
449 case "$make_cv_job_server/$user_job_server" in
451 echo "WARNING: Make job server requires a POSIX-ish system that"
452 echo " supports the pipe(), sigaction(), and either"
453 echo " waitpid() or wait3() functions. Your system doesn't"
454 echo " appear to provide one or more of those."
455 echo " Disabling job server support."
460 # Specify what files are to be created.
461 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile w32/Makefile)
467 # We only generate the build.sh if we have a build.sh.in; we won't have
468 # one before we've created a distribution.
469 if test -f "$srcdir/build.sh.in"; then
470 ./config.status --file build.sh
475 dnl comment-start: "dnl "
477 dnl comment-start-skip: "\\bdnl\\b\\s *"
478 dnl compile-command: "make configure config.h.in"