1 # Process this file with autoconf to produce a configure script.
3 AC_INIT([GNU make],[3.81beta1],[bug-make@gnu.org])
6 AC_REVISION([[$Id: configure.in,v 1.124 2004/03/04 13:42:52 psmith Exp $]])
9 AC_CONFIG_AUX_DIR(config)
10 AC_CONFIG_SRCDIR(vpath.c)
11 AC_CONFIG_HEADERS(config.h)
14 AM_INIT_AUTOMAKE([1.8.2])
16 # Checks for programs.
21 AC_CHECK_PROG(AR, ar, ar, ar)
22 # Perl is needed for the test suite (only)
23 AC_CHECK_PROG(PERL, perl, perl, perl)
25 # Specialized system macros
34 # Enable gettext, in "external" mode.
36 AM_GNU_GETTEXT_VERSION(0.14.1)
37 AM_GNU_GETTEXT([external])
39 # This test must come as early as possible after the compiler configuration
40 # tests, because the choice of the file model can (in principle) affect
41 # whether functions and headers are available, whether they work, etc.
44 # Checks for libraries.
45 AC_SEARCH_LIBS(getpwnam, [sun])
47 # Checks for header files.
52 AC_CHECK_HEADERS(stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
53 memory.h sys/param.h sys/time.h sys/timeb.h)
55 # Determine what kind of variadic function calls we support
56 AC_CHECK_HEADERS(stdarg.h varargs.h, break)
65 # Find some definition for uintmax_t
67 AC_CHECK_TYPE(uintmax_t,,[
68 uintmax_t="unsigned long"
69 AC_CHECK_TYPE(unsigned long long,[uintmax_t="unsigned long long"])
70 AC_DEFINE_UNQUOTED(uintmax_t,$uintmax_t,
71 [Define uintmax_t if not defined in <stdint.h> or <inttypes.h>.])])
73 # Find out whether our struct stat returns nanosecond resolution timestamps.
75 AC_STRUCT_ST_MTIM_NSEC
76 AC_MSG_CHECKING([whether to use high resolution file timestamps])
77 AC_CACHE_VAL(make_cv_file_timestamp_hi_res, [
78 make_cv_file_timestamp_hi_res=no
79 if test "$ac_cv_struct_st_mtim_nsec" != no; then
80 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
82 # include <inttypes.h>
84 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
85 [make_cv_file_timestamp_hi_res=yes],
88 AC_MSG_RESULT($make_cv_file_timestamp_hi_res)
89 if test "$make_cv_file_timestamp_hi_res" = yes; then
94 AC_DEFINE_UNQUOTED(FILE_TIMESTAMP_HI_RES, $val,
95 [Use high resolution file timestamps if nonzero.])
97 if test "$make_cv_file_timestamp_hi_res" = yes; then
98 # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
99 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
100 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
101 if test "$ac_cv_search_clock_gettime" != no; then
102 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
103 [Define if you have the clock_gettime function.])
107 # Check for DOS-style pathnames.
110 # See if we have a standard version of gettimeofday(). Since actual
111 # implementations can differ, just make sure we have the most common
113 AC_CACHE_CHECK([for standard gettimeofday], ac_cv_func_gettimeofday,
114 [ac_cv_func_gettimeofday=no
115 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
118 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
119 exit (gettimeofday (&t, 0) != 0
120 || t.tv_sec < 0 || t.tv_usec < 0);
122 [ac_cv_func_gettimeofday=yes],
123 [ac_cv_func_gettimeofday=no],
124 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
125 if test "$ac_cv_func_gettimeofday" = yes; then
126 AC_DEFINE(HAVE_GETTIMEOFDAY, 1,
127 [Define if you have a standard gettimeofday function])
130 AC_CHECK_FUNCS( memcpy memmove strchr strdup mkstemp mktemp fdopen \
131 bsd_signal dup2 getcwd sigsetmask sigaction getgroups \
132 seteuid setegid setlinebuf setreuid setregid setvbuf pipe \
135 AC_FUNC_SETVBUF_REVERSED
137 # strcoll() is used by the GNU glob library
143 AC_FUNC_CLOSEDIR_VOID
147 # AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
148 # doesn't. So, we will.
150 if test "$ac_cv_header_nlist_h" = yes; then
151 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
153 nl.n_name = "string";
155 [make_cv_nlist_struct=yes],
156 [make_cv_nlist_struct=no])
157 if test "$make_cv_nlist_struct" = yes; then
158 AC_DEFINE(NLIST_STRUCT, 1,
159 [Define if struct nlist.n_name is a pointer rather than an array.])
163 AC_CHECK_DECLS([sys_siglist])
166 # Check out the wait reality.
167 AC_CHECK_HEADERS(sys/wait.h)
168 AC_CHECK_FUNCS(waitpid wait3)
169 AC_MSG_CHECKING(for union wait)
170 AC_CACHE_VAL(make_cv_union_wait, [dnl
171 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
172 #include <sys/wait.h>]],
173 [[union wait status; int pid; pid = wait (&status);
175 /* Some POSIXoid systems have both the new-style macros and the old
176 union wait type, and they do not work together. If union wait
177 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
178 if (WEXITSTATUS (status) != 0) pid = -1;
180 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
181 -- blow chunks here --
185 /* Make sure union wait works with waitpid. */
186 pid = waitpid (-1, &status, 0);
189 [make_cv_union_wait=yes],
190 [make_cv_union_wait=no])])
191 if test "$make_cv_union_wait" = yes; then
192 AC_DEFINE(HAVE_UNION_WAIT, 1,
193 [Define this if you have the \`union wait' type in <sys/wait.h>.])
195 AC_MSG_RESULT($make_cv_union_wait)
198 # If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
199 if test "$PATH_SEPARATOR" = ';'; then
200 AC_DEFINE(HAVE_DOS_PATHS, 1,
201 [Define this if your system requires backslashes or drive specs in pathnames.])
205 # See if the user wants to use pmake's "customs" distributed build capability
207 AC_SUBST(REMOTE) REMOTE=stub
210 AC_HELP_STRING([--with-customs=DIR],
211 [enable remote jobs via Customs--see README.customs]),
214 *) make_cppflags="$CPPFLAGS"
217 *) CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
218 make_ldflags="$LDFLAGS -L$with_customs/lib" ;;
221 AC_CHECK_HEADER(customs.h,
224 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
226 CPPFLAGS="$make_cppflags" make_badcust=yes])
229 # Tell automake about this, so it can include the right .c files.
230 AM_CONDITIONAL(USE_CUSTOMS, test "$use_customs" = true)
232 # See if we can handle the job server feature, and if the user wants it.
234 AC_ARG_ENABLE(job-server,
235 AC_HELP_STRING([--disable-job-server],
236 [disallow recursive make communication during -jN]),
237 [make_cv_job_server="$enableval" user_job_server="$enableval"],
238 [make_cv_job_server="yes"])
241 case "$ac_cv_func_waitpid/$ac_cv_func_wait3" in
242 no/no) has_wait_nohang=no ;;
245 AC_CACHE_CHECK(for SA_RESTART, make_cv_sa_restart, [
246 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
247 [[return SA_RESTART;]])],
248 [make_cv_sa_restart=yes],
249 [make_cv_sa_restart=no])])
251 # enable make_cv_sa_restart for OS/2
253 os2*) make_cv_sa_restart=yes ;;
256 if test "$make_cv_sa_restart" != no; then
257 AC_DEFINE(HAVE_SA_RESTART, 1,
258 [Define if <signal.h> defines the SA_RESTART constant.])
261 case "$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/$make_cv_job_server" in
263 AC_DEFINE(MAKE_JOBSERVER, 1,
264 [Define this to enable job server support in GNU make.]);;
267 # Find the SCCS commands, so we can include them in our default rules.
269 AC_CACHE_CHECK(for location of SCCS get command, make_cv_path_sccs_get, [
270 if test -f /usr/sccs/get; then
271 make_cv_path_sccs_get=/usr/sccs/get
273 make_cv_path_sccs_get=get
275 AC_DEFINE_UNQUOTED(SCCS_GET, ["$make_cv_path_sccs_get"],
276 [Define to the name of the SCCS 'get' command.])
278 ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
279 if ( /usr/sccs/admin -n s.conftest || admin -n s.conftest ) >/dev/null 2>&1 &&
280 test -f s.conftest; then
281 # We successfully created an SCCS file.
282 AC_CACHE_CHECK(if SCCS get command understands -G, make_cv_sys_get_minus_G, [
283 if $make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
284 test -f conftoast; then
285 make_cv_sys_get_minus_G=yes
287 make_cv_sys_get_minus_G=no
289 case "$make_cv_sys_get_minus_G" in
290 yes) AC_DEFINE(SCCS_GET_MINUS_G, 1,
291 [Define this if the SCCS 'get' command understands the '-G<file>' option.]);;
294 rm -f s.conftest conftoast
296 # Check the system to see if it provides GNU glob. If not, use our
299 AC_MSG_CHECKING(if system libc has GNU glob)
300 AC_CACHE_VAL(make_cv_sys_gnu_glob, [
301 AC_EGREP_CPP(gnu glob,[
302 #include <features.h>
306 #define GLOB_INTERFACE_VERSION 1
307 #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
308 # include <gnu-versions.h>
309 # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
313 ], [AC_MSG_RESULT(yes)
314 make_cv_sys_gnu_glob=yes], [AC_MSG_RESULT([no; using local copy])
315 AC_SUBST(GLOBINC) GLOBINC='-I$(srcdir)/glob'
316 AC_SUBST(GLOBLIB) GLOBLIB=glob/libglob.a
317 make_cv_sys_gnu_glob=no])])
318 # Tell automake about this, so it can build the right .c files.
319 AM_CONDITIONAL(USE_LOCAL_GLOB, test "$make_cv_sys_gnu_glob" = no)
321 # Let the makefile know what our build host is
323 AC_DEFINE_UNQUOTED(MAKE_HOST,"$host",[Build host information.])
327 # Include the Maintainer's Makefile section, if it's here.
329 MAINT_MAKEFILE=/dev/null
330 if test -r "$srcdir/maintMakefile"; then
331 MAINT_MAKEFILE="$srcdir/maintMakefile"
333 AC_SUBST_FILE(MAINT_MAKEFILE)
335 # Allow building with dmalloc
338 # Forcibly disable SET_MAKE. If it's set it breaks things like the test
342 # Sanity check and inform the user of what we found
344 case "$make_badcust" in
346 echo "WARNING: --with-customs specified but no customs.h could be found;"
347 echo " disabling Customs support."
351 case "$with_customs" in
353 *) if test -f "$with_customs/lib/libcustoms.a"; then
357 echo "WARNING: '$with_customs/lib' does not appear to contain the"
358 echo " Customs library. You must build and install Customs"
359 echo " before compiling GNU make."
364 case "$has_wait_nohang" in
366 echo "WARNING: Your system has neither waitpid() nor wait3()."
367 echo " Without one of these, signal handling is unreliable."
368 echo " You should be aware that running GNU make with -j"
369 echo " could result in erratic behavior."
373 case "$make_cv_job_server/$user_job_server" in
375 echo "WARNING: Make job server requires a POSIX-ish system that"
376 echo " supports the pipe(), sigaction(), and either"
377 echo " waitpid() or wait3() functions. Your system doesn't"
378 echo " appear to provide one or more of those."
379 echo " Disabling job server support."
384 # Specify what files are to be created.
385 # We only generate the build.sh if we have a build.sh.in; we won't have
386 # one before we've created a distribution.
388 AC_CONFIG_FILES(Makefile glob/Makefile po/Makefile.in config/Makefile doc/Makefile)
390 if test -f $srcdir/build.sh.in; then
391 AC_CONFIG_FILES(build.sh)
401 dnl comment-start: "dnl "
403 dnl comment-start-skip: "\\bdnl\\b\\s *"
404 dnl compile-command: "make configure config.h.in"