1 # Process this file with autoconf to produce a configure script.
3 AC_INIT([GNU make],[3.81beta3],[bug-make@gnu.org])
6 AC_REVISION([[$Id: configure.in,v 1.136 2005/06/12 22:22:07 psmith Exp $]])
9 AC_CONFIG_AUX_DIR(config)
10 AC_CONFIG_SRCDIR(vpath.c)
11 AC_CONFIG_HEADERS(config.h)
14 AM_INIT_AUTOMAKE([1.8.2])
16 # Checks for programs.
21 AC_CHECK_PROG(AR, ar, ar, ar)
22 # Perl is needed for the test suite (only)
23 AC_CHECK_PROG(PERL, perl, perl, perl)
25 # Specialized system macros
34 # Enable gettext, in "external" mode.
36 AM_GNU_GETTEXT_VERSION(0.14.1)
37 AM_GNU_GETTEXT([external])
39 # This test must come as early as possible after the compiler configuration
40 # tests, because the choice of the file model can (in principle) affect
41 # whether functions and headers are available, whether they work, etc.
44 # Checks for libraries.
45 AC_SEARCH_LIBS(getpwnam, [sun])
47 # Checks for header files.
52 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
53 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h)
55 # Set a flag if we have an ANSI C compiler
56 if test "$ac_cv_prog_cc_stdc" != no; then
57 AC_DEFINE(HAVE_ANSI_COMPILER, 1,
58 [Define if your compiler conforms to the ANSI C standard.])
62 # Determine what kind of variadic function calls we support
63 AC_CHECK_HEADERS(stdarg.h varargs.h, break)
71 # Find some definition for uintmax_t
73 AC_CHECK_TYPE(uintmax_t,,[
74 uintmax_t="unsigned long"
75 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
76 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
77 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
79 # Find out whether our struct stat returns nanosecond resolution timestamps.
81 AC_STRUCT_ST_MTIM_NSEC
82 AC_MSG_CHECKING([whether to use high resolution file timestamps])
83 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
84 make_cv_file_timestamp_hi_res=no
85 if test "$ac_cv_struct_st_mtim_nsec" != no; then
86 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
88 # include <inttypes.h>
90 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
91 [make_cv_file_timestamp_hi_res=yes],
94 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
95 if test "$make_cv_file_timestamp_hi_res" = yes; then
100 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
101 [Use high resolution file timestamps if nonzero.])
103 if test "$make_cv_file_timestamp_hi_res" = yes; then
104 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
105 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
106 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
107 if test "$ac_cv_search_clock_gettime" != no; then
108 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
109 [Define if you have the clock_gettime function.])
113 # Check for DOS-style pathnames.
116 # See if we have a standard version of gettimeofday(). Since actual
117 # implementations can differ, just make sure we have the most common
119 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
120 [ac_cv_func_gettimeofday=no
121 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
124 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
125 exit (gettimeofday (&t, 0) != 0
126 || t.tv_sec < 0 || t.tv_usec < 0);
128 [ac_cv_func_gettimeofday=yes],
129 [ac_cv_func_gettimeofday=no],
130 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
131 if test "$ac_cv_func_gettimeofday" = yes; then
132 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
133 [Define if you have a standard gettimeofday function])
136 AC_CHECK_FUNCS( memcpy memmove strchr strdup mkstemp mktemp fdopen \
137 bsd_signal dup2 getcwd realpath sigsetmask sigaction \
138 getgroups seteuid setegid setlinebuf setreuid setregid \
139 getrlimit setrlimit setvbuf pipe strerror strsignal \
140 lstat readlink atexit)
142 AC_FUNC_SETVBUF_REVERSED
144 # strcoll() is used by the GNU glob library
150 AC_FUNC_CLOSEDIR_VOID
154 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
155 # doesn't. So, we will.
157 if test "$ac_cv_header_nlist_h" = yes; then
158 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
160 nl.n_name = "string";
162 [make_cv_nlist_struct=yes],
163 [make_cv_nlist_struct=no])
164 if test "$make_cv_nlist_struct" = yes; then
165 AC_DEFINE(NLIST_STRUCT, 1,
166 [Define if struct nlist.n_name is a pointer rather than an array.])
170 AC_CHECK_DECLS([sys_siglist],,,
172 /* NetBSD declares sys_siglist in unistd.h. */
179 # Check out the wait reality.
180 AC_CHECK_HEADERS(sys/wait.h)
181 AC_CHECK_FUNCS(waitpid wait3)
182 AC_MSG_CHECKING(for union wait)
183 AC_CACHE_VAL(make_cv_union_wait, [dnl
184 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
185 #include <sys/wait.h>]],
186 [[union wait status; int pid; pid = wait (&status);
188 /* Some POSIXoid systems have both the new-style macros and the old
189 union wait type, and they do not work together. If union wait
190 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
191 if (WEXITSTATUS (status) != 0) pid = -1;
193 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
194 -- blow chunks here --
198 /* Make sure union wait works with waitpid. */
199 pid = waitpid (-1, &status, 0);
202 [make_cv_union_wait=yes],
203 [make_cv_union_wait=no])])
204 if test "$make_cv_union_wait" = yes; then
205 AC_DEFINE(HAVE_UNION_WAIT, 1,
206 [Define this if you have the \`union wait' type in <sys/wait.h>.])
208 AC_MSG_RESULT($make_cv_union_wait)
211 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
212 if test "$PATH_SEPARATOR" = ';'; then
213 AC_DEFINE(HAVE_DOS_PATHS, 1,
214 [Define this if your system requires backslashes or drive specs in pathnames.])
218 # See if the user wants to use pmake's "customs" distributed build capability
220 AC_SUBST(REMOTE) REMOTE=stub
223 AC_HELP_STRING([--with-customs=DIR],
224 [enable remote jobs via Customs--see README.customs]),
227 *) make_cppflags="$CPPFLAGS"
230 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
231 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
234 AC_CHECK_HEADER(customs.h,
237 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
239 CPPFLAGS="$make_cppflags" make_badcust=yes])
242 # Tell automake about this, so it can include the right .c files.
243 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
245 # See if the user asked to handle case insensitive file systems.
247 AH_TEMPLATE(HAVE_CASE_INSENSITIVE_FS, [Use case insensitive file names])
248 AC_ARG_ENABLE(case-insensitive-file-system,
249 AC_HELP_STRING([--enable-case-insensitive-file-system],
250 [enable case insensitive file system support]),
251 case_insensitive_fs="yes" AC_DEFINE(HAVE_CASE_INSENSITIVE_FS),
252 case_insensitive_fs="no")
254 # See if we can handle the job server feature, and if the user wants it.
256 AC_ARG_ENABLE(job-server,
257 AC_HELP_STRING([--disable-job-server],
258 [disallow recursive make communication during -jN]),
259 [make_cv_job_server="$enableval" user_job_server="$enableval"],
260 [make_cv_job_server="yes"])
263 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
264 no/no) has_wait_nohang=no ;;
267 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
268 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
269 [[return SA_RESTART;]])],
270 [make_cv_sa_restart=yes],
271 [make_cv_sa_restart=no])])
273 if test "$make_cv_sa_restart" != no; then
274 AC_DEFINE(HAVE_SA_RESTART, 1,
275 [Define if <signal.h> defines the SA_RESTART constant.])
278 # enable make_cv_sa_restart for OS/2 so that the jobserver will be enabled,
279 # but do it after HAVE_SA_RESTART has been defined.
281 os2*) make_cv_sa_restart=yes ;;
284 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
286 AC_DEFINE(MAKE_JOBSERVER, 1,
287 [Define this to enable job server support in GNU make.]);;
290 # if we have both lstat() and readlink() then we can support symlink
292 case "$ac_cv_func_lstat/$ac_cv_func_readlink" in
294 AC_DEFINE(MAKE_SYMLINKS, 1,
295 [Define this to enable symbolic link timestamp checking.]);;
298 # Find the SCCS commands, so we can include them in our default rules.
300 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
301 if test -f /usr/sccs/get; then
302 make_cv_path_sccs_get=/usr/sccs/get
304 make_cv_path_sccs_get=get
306 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
307 [Define to the name of the SCCS 'get' command.])
309 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
310 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
311 test -f s.conftest; then
312 # We successfully created an SCCS file.
313 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
314 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
315 test -f conftoast; then
316 make_cv_sys_get_minus_G=yes
318 make_cv_sys_get_minus_G=no
320 case "$make_cv_sys_get_minus_G" in
321 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
322 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
325 rm -f s.conftest conftoast
327 # Check the system to see if it provides GNU glob. If not, use our
330 AC_MSG_CHECKING(if system libc has GNU glob)
331 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
332 AC_EGREP_CPP(gnu glob,[
333 #include <features.h>
337 #define GLOB_INTERFACE_VERSION 1
338 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
339 # include <gnu-versions.h>
340 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
344 ], [AC_MSG_RESULT(yes)
345 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
346 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
347 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
348 make_cv_sys_gnu_glob=no])])
349 # Tell automake about this, so it can build the right .c files.
350 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
352 # Let the makefile know what our build host is
354 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
359 AM_CONDITIONAL([WINDOWSENV], false)
363 AM_CONDITIONAL(WINDOWSENV, true)
365 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
366 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
370 # Include the Maintainer's Makefile section, if it's here.
372 MAINT_MAKEFILE=/dev/null
373 if test -r "$srcdir/maintMakefile"; then
374 MAINT_MAKEFILE="$srcdir/maintMakefile"
376 AC_SUBST_FILE(MAINT_MAKEFILE)
378 # Allow building with dmalloc
381 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
385 # Sanity check and inform the user of what we found
387 case "$make_badcust" in
389 echo "WARNING: --with-customs specified but no customs.h could be found;"
390 echo " disabling Customs support."
394 case "$with_customs" in
396 *) if test -f "$with_customs/lib/libcustoms.a"; then
400 echo "WARNING: '$with_customs/lib' does not appear to contain the"
401 echo " Customs library. You must build and install Customs"
402 echo " before compiling GNU make."
407 case "$has_wait_nohang" in
409 echo "WARNING: Your system has neither waitpid() nor wait3()."
410 echo " Without one of these, signal handling is unreliable."
411 echo " You should be aware that running GNU make with -j"
412 echo " could result in erratic behavior."
416 case "$make_cv_job_server/$user_job_server" in
418 echo "WARNING: Make job server requires a POSIX-ish system that"
419 echo " supports the pipe(), sigaction(), and either"
420 echo " waitpid() or wait3() functions. Your system doesn't"
421 echo " appear to provide one or more of those."
422 echo " Disabling job server support."
427 # Specify what files are to be created.
428 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile w32/Makefile)
434 # We only generate the build.sh if we have a build.sh.in; we won't have
435 # one before we've created a distribution.
436 if test -f build.sh.in; then
437 ./config.status --file build.sh
442 dnl comment-start: "dnl "
444 dnl comment-start-skip: "\\bdnl\\b\\s *"
445 dnl compile-command: "make configure config.h.in"