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 1.137 2005/07/12 04:35:13 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, _sys_siglist, __sys_siglist], , ,
173 /* NetBSD declares sys_siglist in unistd.h. */
180 # Check out the wait reality.
181 AC_CHECK_HEADERS(sys/wait.h)
182 AC_CHECK_FUNCS(waitpid wait3)
183 AC_MSG_CHECKING(for union wait)
184 AC_CACHE_VAL(make_cv_union_wait, [dnl
185 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
186 #include <sys/wait.h>]],
187 [[union wait status; int pid; pid = wait (&status);
189 /* Some POSIXoid systems have both the new-style macros and the old
190 union wait type, and they do not work together. If union wait
191 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
192 if (WEXITSTATUS (status) != 0) pid = -1;
194 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
195 -- blow chunks here --
199 /* Make sure union wait works with waitpid. */
200 pid = waitpid (-1, &status, 0);
203 [make_cv_union_wait=yes],
204 [make_cv_union_wait=no])])
205 if test "$make_cv_union_wait" = yes; then
206 AC_DEFINE(HAVE_UNION_WAIT, 1,
207 [Define this if you have the \`union wait' type in <sys/wait.h>.])
209 AC_MSG_RESULT($make_cv_union_wait)
212 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
213 if test "$PATH_SEPARATOR" = ';'; then
214 AC_DEFINE(HAVE_DOS_PATHS, 1,
215 [Define this if your system requires backslashes or drive specs in pathnames.])
219 # See if the user wants to use pmake's "customs" distributed build capability
221 AC_SUBST(REMOTE) REMOTE=stub
224 AC_HELP_STRING([--with-customs=DIR],
225 [enable remote jobs via Customs--see README.customs]),
228 *) make_cppflags="$CPPFLAGS"
231 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
232 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
235 AC_CHECK_HEADER(customs.h,
238 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
240 CPPFLAGS="$make_cppflags" make_badcust=yes])
243 # Tell automake about this, so it can include the right .c files.
244 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
246 # See if the user asked to handle case insensitive file systems.
248 AH_TEMPLATE(HAVE_CASE_INSENSITIVE_FS, [Use case insensitive file names])
249 AC_ARG_ENABLE(case-insensitive-file-system,
250 AC_HELP_STRING([--enable-case-insensitive-file-system],
251 [enable case insensitive file system support]),
252 case_insensitive_fs="yes" AC_DEFINE(HAVE_CASE_INSENSITIVE_FS),
253 case_insensitive_fs="no")
255 # See if we can handle the job server feature, and if the user wants it.
257 AC_ARG_ENABLE(job-server,
258 AC_HELP_STRING([--disable-job-server],
259 [disallow recursive make communication during -jN]),
260 [make_cv_job_server="$enableval" user_job_server="$enableval"],
261 [make_cv_job_server="yes"])
264 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
265 no/no) has_wait_nohang=no ;;
268 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
269 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
270 [[return SA_RESTART;]])],
271 [make_cv_sa_restart=yes],
272 [make_cv_sa_restart=no])])
274 if test "$make_cv_sa_restart" != no; then
275 AC_DEFINE(HAVE_SA_RESTART, 1,
276 [Define if <signal.h> defines the SA_RESTART constant.])
279 # enable make_cv_sa_restart for OS/2 so that the jobserver will be enabled,
280 # but do it after HAVE_SA_RESTART has been defined.
282 os2*) make_cv_sa_restart=yes ;;
285 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
287 AC_DEFINE(MAKE_JOBSERVER, 1,
288 [Define this to enable job server support in GNU make.]);;
291 # if we have both lstat() and readlink() then we can support symlink
293 case "$ac_cv_func_lstat/$ac_cv_func_readlink" in
295 AC_DEFINE(MAKE_SYMLINKS, 1,
296 [Define this to enable symbolic link timestamp checking.]);;
299 # Find the SCCS commands, so we can include them in our default rules.
301 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
302 if test -f /usr/sccs/get; then
303 make_cv_path_sccs_get=/usr/sccs/get
305 make_cv_path_sccs_get=get
307 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
308 [Define to the name of the SCCS 'get' command.])
310 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
311 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
312 test -f s.conftest; then
313 # We successfully created an SCCS file.
314 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
315 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
316 test -f conftoast; then
317 make_cv_sys_get_minus_G=yes
319 make_cv_sys_get_minus_G=no
321 case "$make_cv_sys_get_minus_G" in
322 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
323 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
326 rm -f s.conftest conftoast
328 # Check the system to see if it provides GNU glob. If not, use our
331 AC_MSG_CHECKING(if system libc has GNU glob)
332 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
333 AC_EGREP_CPP(gnu glob,[
334 #include <features.h>
338 #define GLOB_INTERFACE_VERSION 1
339 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
340 # include <gnu-versions.h>
341 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
345 ], [AC_MSG_RESULT(yes)
346 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
347 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
348 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
349 make_cv_sys_gnu_glob=no])])
350 # Tell automake about this, so it can build the right .c files.
351 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
353 # Let the makefile know what our build host is
355 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
360 AM_CONDITIONAL([WINDOWSENV], false)
364 AM_CONDITIONAL(WINDOWSENV, true)
366 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
367 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
371 # Include the Maintainer's Makefile section, if it's here.
373 MAINT_MAKEFILE=/dev/null
374 if test -r "$srcdir/maintMakefile"; then
375 MAINT_MAKEFILE="$srcdir/maintMakefile"
377 AC_SUBST_FILE(MAINT_MAKEFILE)
379 # Allow building with dmalloc
382 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
386 # Sanity check and inform the user of what we found
388 case "$make_badcust" in
390 echo "WARNING: --with-customs specified but no customs.h could be found;"
391 echo " disabling Customs support."
395 case "$with_customs" in
397 *) if test -f "$with_customs/lib/libcustoms.a"; then
401 echo "WARNING: '$with_customs/lib' does not appear to contain the"
402 echo " Customs library. You must build and install Customs"
403 echo " before compiling GNU make."
408 case "$has_wait_nohang" in
410 echo "WARNING: Your system has neither waitpid() nor wait3()."
411 echo " Without one of these, signal handling is unreliable."
412 echo " You should be aware that running GNU make with -j"
413 echo " could result in erratic behavior."
417 case "$make_cv_job_server/$user_job_server" in
419 echo "WARNING: Make job server requires a POSIX-ish system that"
420 echo " supports the pipe(), sigaction(), and either"
421 echo " waitpid() or wait3() functions. Your system doesn't"
422 echo " appear to provide one or more of those."
423 echo " Disabling job server support."
428 # Specify what files are to be created.
429 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile w32/Makefile)
435 # We only generate the build.sh if we have a build.sh.in; we won't have
436 # one before we've created a distribution.
437 if test -f build.sh.in; then
438 ./config.status --file build.sh
443 dnl comment-start: "dnl "
445 dnl comment-start-skip: "\\bdnl\\b\\s *"
446 dnl compile-command: "make configure config.h.in"