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source: kBuild/trunk/src/kmk/configure.ac

Last change on this file was 3491, checked in by bird, 4 years ago

kmk: Darwin build and warning fixes.

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1# Process this file with autoconf to produce a configure script.
2#
3# Copyright (C) 1993-2016 Free Software Foundation, Inc.
4# This file is part of GNU Make.
5#
6# GNU Make is free software; you can redistribute it and/or modify it under
7# the terms of the GNU General Public License as published by the Free Software
8# Foundation; either version 3 of the License, or (at your option) any later
9# version.
10#
11# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
14# details.
15#
16# You should have received a copy of the GNU General Public License along with
17# this program. If not, see <http://www.gnu.org/licenses/>.
18
19AC_INIT([GNU make],[4.2.1],[[email protected]])
20
21AC_PREREQ([2.69])
22
23# Autoconf setup
24AC_CONFIG_AUX_DIR([config])
25AC_CONFIG_SRCDIR([vpath.c])
26AC_CONFIG_HEADERS([config.h])
27
28# Automake setup
29# We have to enable "foreign" because ChangeLog is auto-generated
30# We cannot enable -Werror because gettext 0.18.1 has invalid content
31# When we update gettext to 0.18.3 or better we can add it again.
32# bird: Added subdir-objects
33AM_INIT_AUTOMAKE([1.15 foreign -Werror -Wall subdir-objects])
34
35# Checks for programs.
36AC_USE_SYSTEM_EXTENSIONS
37AC_PROG_CC
38AC_PROG_INSTALL
39AC_PROG_RANLIB
40AC_PROG_CPP
41AC_CHECK_PROG([AR], [ar], [ar], [ar])
42# Perl is needed for the test suite (only)
43AC_CHECK_PROG([PERL], [perl], [perl], [perl])
44
45# Needed for w32/Makefile.am
46AM_PROG_AR
47
48# Specialized system macros
49AC_CANONICAL_HOST
50AC_AIX
51AC_ISC_POSIX
52AC_MINIX
53
54# Enable gettext, in "external" mode.
55# bird: causes trouble when it doesn't find 'po' in SUBDIRS, so skip it.
56#AM_GNU_GETTEXT_VERSION([0.19.4])
57#AM_GNU_GETTEXT([external])
58
59# This test must come as early as possible after the compiler configuration
60# tests, because the choice of the file model can (in principle) affect
61# whether functions and headers are available, whether they work, etc.
62AC_SYS_LARGEFILE
63
64# Checks for libraries.
65AC_SEARCH_LIBS([getpwnam], [sun])
66
67# Checks for header files.
68AC_HEADER_STDC
69AC_HEADER_DIRENT
70AC_HEADER_STAT
71AC_HEADER_TIME
72AC_CHECK_HEADERS([stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
73 memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h \
74 sys/select.h])
75
76AM_PROG_CC_C_O
77AC_C_CONST
78AC_TYPE_SIGNAL
79AC_TYPE_UID_T
80AC_TYPE_PID_T
81AC_TYPE_OFF_T
82AC_TYPE_SIZE_T
83AC_TYPE_SSIZE_T
84AC_TYPE_UINTMAX_T
85
86# Find out whether our struct stat returns nanosecond resolution timestamps.
87
88AC_STRUCT_ST_MTIM_NSEC
89AC_STRUCT_ST_ATIM_NSEC
90AC_CACHE_CHECK([whether to use high resolution file timestamps],
91 [make_cv_file_timestamp_hi_res],
92[ make_cv_file_timestamp_hi_res=no
93 AS_IF([test "$ac_cv_struct_st_mtim_nsec" != no],
94 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
95#if HAVE_INTTYPES_H
96# include <inttypes.h>
97#endif]],
98 [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
99 [make_cv_file_timestamp_hi_res=yes])
100 ])])
101AS_IF([test "$make_cv_file_timestamp_hi_res" = yes], [val=1], [val=0])
102AC_DEFINE_UNQUOTED([FILE_TIMESTAMP_HI_RES], [$val],
103 [Use high resolution file timestamps if nonzero.])
104
105AS_IF([test "$make_cv_file_timestamp_hi_res" = yes],
106[ # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
107 # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
108 AC_SEARCH_LIBS([clock_gettime], [rt posix4])
109 AS_IF([test "$ac_cv_search_clock_gettime" != no],
110 [ AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
111 [Define to 1 if you have the clock_gettime function.])
112 ])
113])
114
115# Check for DOS-style pathnames.
116pds_AC_DOS_PATHS
117
118# See if we have a standard version of gettimeofday(). Since actual
119# implementations can differ, just make sure we have the most common
120# one.
121AC_CACHE_CHECK([for standard gettimeofday], [ac_cv_func_gettimeofday],
122 [ac_cv_func_gettimeofday=no
123 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
124 #include <stdlib.h> /* kmk/darwin: for exit */
125 int main ()
126 {
127 struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
128 exit (gettimeofday (&t, 0) != 0
129 || t.tv_sec < 0 || t.tv_usec < 0);
130 }]])],
131 [ac_cv_func_gettimeofday=yes],
132 [ac_cv_func_gettimeofday=no],
133 [ac_cv_func_gettimeofday="no (cross-compiling)"])])
134AS_IF([test "$ac_cv_func_gettimeofday" = yes],
135[ AC_DEFINE([HAVE_GETTIMEOFDAY], [1],
136 [Define to 1 if you have a standard gettimeofday function])
137])
138
139AC_CHECK_FUNCS([strdup strndup mkstemp mktemp fdopen fileno \
140 dup dup2 getcwd realpath sigsetmask sigaction \
141 getgroups seteuid setegid setlinebuf setreuid setregid \
142 getrlimit setrlimit setvbuf pipe strerror strsignal \
143 lstat readlink atexit isatty ttyname pselect])
144
145# We need to check declarations, not just existence, because on Tru64 this
146# function is not declared without special flags, which themselves cause
147# other problems. We'll just use our own.
148AC_CHECK_DECLS([bsd_signal], [], [], [[#define _GNU_SOURCE 1
149#include <signal.h>]])
150
151AC_FUNC_FORK
152
153AC_FUNC_SETVBUF_REVERSED
154
155# Rumor has it that strcasecmp lives in -lresolv on some odd systems.
156# It doesn't hurt much to use our own if we can't find it so I don't
157# make the effort here.
158AC_CHECK_FUNCS([strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp])
159
160# strcoll() is used by the GNU glob library
161AC_FUNC_STRCOLL
162
163AC_FUNC_ALLOCA
164AC_FUNC_CLOSEDIR_VOID
165
166# bird: This guile detection does not work on rhel4. Disabled it all since we doesn't care about guile.
167## See if the user wants to add (or not) GNU Guile support
168#PKG_PROG_PKG_CONFIG
169#AC_ARG_WITH([guile], [AS_HELP_STRING([--with-guile],
170# [Support GNU Guile for embedded scripting])])
171#
172## For some strange reason, at least on Ubuntu, each version of Guile
173## comes with it's own PC file so we have to specify them as individual
174## packages. Ugh.
175#AS_IF([test "x$with_guile" != xno],
176#[ PKG_CHECK_MODULES([GUILE], [guile-2.0], [have_guile=yes],
177# [PKG_CHECK_MODULES([GUILE], [guile-1.8], [have_guile=yes],
178# [have_guile=no])])
179#])
180#
181#AS_IF([test "$have_guile" = yes],
182# [AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])])
183#
184#AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = yes])
185
186AC_FUNC_GETLOADAVG
187
188# AC_FUNC_GETLOADAVG is documented to set the NLIST_STRUCT value, but it
189# doesn't. So, we will.
190
191AS_IF([test "$ac_cv_header_nlist_h" = yes],
192[ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <nlist.h>]],
193 [[struct nlist nl;
194 nl.n_name = "string";
195 return 0;]])],
196 [make_cv_nlist_struct=yes],
197 [make_cv_nlist_struct=no])
198 AS_IF([test "$make_cv_nlist_struct" = yes],
199 [ AC_DEFINE([NLIST_STRUCT], [1],
200 [Define to 1 if struct nlist.n_name is a pointer rather than an array.])
201 ])
202])
203
204AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
205 [AC_INCLUDES_DEFAULT
206#include <signal.h>
207/* NetBSD declares sys_siglist in unistd.h. */
208#if HAVE_UNISTD_H
209# include <unistd.h>
210#endif
211])
212
213
214# Check out the wait reality.
215AC_CHECK_HEADERS([sys/wait.h],[],[],[[#include <sys/types.h>]])
216AC_CHECK_FUNCS([waitpid wait3])
217AC_CACHE_CHECK([for union wait], [make_cv_union_wait],
218[ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
219#include <sys/wait.h>]],
220 [[union wait status; int pid; pid = wait (&status);
221#ifdef WEXITSTATUS
222/* Some POSIXoid systems have both the new-style macros and the old
223 union wait type, and they do not work together. If union wait
224 conflicts with WEXITSTATUS et al, we don't want to use it at all. */
225 if (WEXITSTATUS (status) != 0) pid = -1;
226#ifdef WTERMSIG
227 /* If we have WEXITSTATUS and WTERMSIG, just use them on ints. */
228 -- blow chunks here --
229#endif
230#endif
231#ifdef HAVE_WAITPID
232 /* Make sure union wait works with waitpid. */
233 pid = waitpid (-1, &status, 0);
234#endif
235 ]])],
236 [make_cv_union_wait=yes],
237 [make_cv_union_wait=no])
238])
239AS_IF([test "$make_cv_union_wait" = yes],
240[ AC_DEFINE([HAVE_UNION_WAIT], [1],
241 [Define to 1 if you have the 'union wait' type in <sys/wait.h>.])
242])
243
244
245# If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
246AS_IF([test "$PATH_SEPARATOR" = ';'],
247[ AC_DEFINE([HAVE_DOS_PATHS], [1],
248 [Define to 1 if your system requires backslashes or drive specs in pathnames.])
249])
250
251# See if the user wants to use pmake's "customs" distributed build capability
252AC_SUBST([REMOTE]) REMOTE=stub
253use_customs=false
254AC_ARG_WITH([customs],
255[AC_HELP_STRING([--with-customs=DIR],
256 [enable remote jobs via Customs--see README.customs])],
257[ AS_CASE([$withval], [n|no], [:],
258 [make_cppflags="$CPPFLAGS"
259 AS_CASE([$withval],
260 [y|ye|yes], [:],
261 [CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
262 make_ldflags="$LDFLAGS -L$with_customs/lib"])
263 CF_NETLIBS
264 AC_CHECK_HEADER([customs.h],
265 [use_customs=true
266 REMOTE=cstms
267 LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
268 [with_customs=no
269 CPPFLAGS="$make_cppflags" make_badcust=yes])
270 ])
271])
272
273# Tell automake about this, so it can include the right .c files.
274AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true])
275
276# See if the user asked to handle case insensitive file systems.
277AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names])
278AC_ARG_ENABLE([case-insensitive-file-system],
279 AC_HELP_STRING([--enable-case-insensitive-file-system],
280 [assume file systems are case insensitive]),
281 [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])])
282
283# See if we can handle the job server feature, and if the user wants it.
284AC_ARG_ENABLE([job-server],
285 AC_HELP_STRING([--disable-job-server],
286 [disallow recursive make communication during -jN]),
287 [make_cv_job_server="$enableval" user_job_server="$enableval"],
288 [make_cv_job_server="yes"])
289
290AS_IF([test "$ac_cv_func_waitpid" = no && test "$ac_cv_func_wait3" = no],
291 [has_wait_nohang=no],
292 [has_wait_nohang=yes])
293
294AC_CACHE_CHECK([for SA_RESTART], [make_cv_sa_restart], [
295 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
296 [[return SA_RESTART;]])],
297 [make_cv_sa_restart=yes],
298 [make_cv_sa_restart=no])])
299
300AS_IF([test "$make_cv_sa_restart" != no],
301[ AC_DEFINE([HAVE_SA_RESTART], [1],
302 [Define to 1 if <signal.h> defines the SA_RESTART constant.])
303])
304
305# Only allow jobserver on systems that support it
306AS_CASE([/$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/],
307 [*/no/*], [make_cv_job_server=no])
308
309# Also supported on OS2 and MinGW
310AS_CASE([$host_os], [os2*|mingw*], [make_cv_job_server=yes])
311
312# If we support it and the user didn't disable it, build with jobserver
313AS_CASE([/$make_cv_job_server/$user_job_server/],
314 [*/no/*], [: no jobserver],
315 [AC_DEFINE(MAKE_JOBSERVER, 1,
316 [Define to 1 to enable job server support in GNU make.])
317 ])
318
319# If dl*() functions are supported we can enable the load operation
320AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [],
321 [[#include <dlfcn.h>]])
322
323AC_ARG_ENABLE([load],
324 AC_HELP_STRING([--disable-load],
325 [disable support for the 'load' operation]),
326 [make_cv_load="$enableval" user_load="$enableval"],
327 [make_cv_load="yes"])
328
329AS_CASE([/$ac_cv_have_decl_dlopen/$ac_cv_have_decl_dlsym/$ac_cv_have_decl_dlerror/],
330 [*/no/*], [make_cv_load=no])
331
332# We might need -ldl
333AS_IF([test "$make_cv_load" = yes], [
334 AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=])
335 ])
336
337AS_CASE([/$make_cv_load/$user_load/],
338 [*/no/*], [make_cv_load=no],
339 [AC_DEFINE(MAKE_LOAD, 1,
340 [Define to 1 to enable 'load' support in GNU make.])
341 ])
342
343# If we want load support, we might need to link with export-dynamic.
344# See if we can figure it out. Unfortunately this is very difficult.
345# For example passing -rdynamic to the SunPRO linker gives a warning
346# but succeeds and creates a shared object, not an executable!
347AS_IF([test "$make_cv_load" = yes], [
348 AC_MSG_CHECKING([If the linker accepts -Wl,--export-dynamic])
349 old_LDFLAGS="$LDFLAGS"
350 LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
351 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
352 [AC_MSG_RESULT([yes])
353 AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])],
354 [AC_MSG_RESULT([no])
355 AC_MSG_CHECKING([If the linker accepts -rdynamic])
356 LDFLAGS="$old_LDFLAGS -rdynamic"
357 AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
358 [AC_MSG_RESULT([yes])
359 AC_SUBST([AM_LDFLAGS], [-rdynamic])],
360 [AC_MSG_RESULT([no])])
361 ])
362 LDFLAGS="$old_LDFLAGS"
363])
364
365# if we have both lstat() and readlink() then we can support symlink
366# timechecks.
367AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes],
368 [ AC_DEFINE([MAKE_SYMLINKS], [1],
369 [Define to 1 to enable symbolic link timestamp checking.])
370])
371
372# Find the SCCS commands, so we can include them in our default rules.
373
374AC_CACHE_CHECK([for location of SCCS get command], [make_cv_path_sccs_get], [
375 AS_IF([test -f /usr/sccs/get],
376 [make_cv_path_sccs_get=/usr/sccs/get],
377 [make_cv_path_sccs_get=get])
378])
379AC_DEFINE_UNQUOTED([SCCS_GET], ["$make_cv_path_sccs_get"],
380 [Define to the name of the SCCS 'get' command.])
381
382ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
383AS_IF([(/usr/sccs/admin -n s.conftest || admin -n s.conftest) >/dev/null 2>&1 &&
384 test -f s.conftest],
385[ # We successfully created an SCCS file.
386 AC_CACHE_CHECK([if SCCS get command understands -G], [make_cv_sys_get_minus_G],
387 [AS_IF([$make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
388 test -f conftoast],
389 [make_cv_sys_get_minus_G=yes],
390 [make_cv_sys_get_minus_G=no])
391 ])
392 AS_IF([test "$make_cv_sys_get_minus_G" = yes],
393 [AC_DEFINE([SCCS_GET_MINUS_G], [1],
394 [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.])
395 ])
396])
397rm -f s.conftest conftoast
398
399## bird: always use our glob impl. Avoids trouble with newish glibc.
400# Check the system to see if it provides GNU glob. If not, use our
401# local version.
402#x# AC_CACHE_CHECK([if system libc has GNU glob], [make_cv_sys_gnu_glob],
403#x# [ AC_EGREP_CPP([gnu glob],[
404#x# #include <features.h>
405#x# #include <glob.h>
406#x# #include <fnmatch.h>
407#x#
408#x# #define GLOB_INTERFACE_VERSION 1
409#x# #if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
410#x# # include <gnu-versions.h>
411#x# # if _GNU_GLOB_INTERFACE_VERSION == GLOB_INTERFACE_VERSION
412#x# gnu glob
413#x# # endif
414#x# #endif],
415#x# [make_cv_sys_gnu_glob=yes],
416#x# [make_cv_sys_gnu_glob=no])])
417#x# AS_IF([test "$make_cv_sys_gnu_glob" = no],
418AS_IF([test yes = yes],
419[ GLOBINC='-I$(srcdir)/glob'
420 GLOBLIB=glob/libglob.a
421 make_cv_sys_gnu_glob=no
422])
423AC_SUBST([GLOBINC])
424AC_SUBST([GLOBLIB])
425
426# Tell automake about this, so it can build the right .c files.
427AM_CONDITIONAL([USE_LOCAL_GLOB], [test "$make_cv_sys_gnu_glob" = no])
428
429# Let the makefile know what our build host is
430
431AC_DEFINE_UNQUOTED([MAKE_HOST],["$host"],[Build host information.])
432MAKE_HOST="$host"
433AC_SUBST([MAKE_HOST])
434
435w32_target_env=no
436AM_CONDITIONAL([WINDOWSENV], [false])
437
438AS_CASE([$host],
439 [*-*-mingw32],
440 [AM_CONDITIONAL([WINDOWSENV], [true])
441 w32_target_env=yes
442 AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
443 AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
444 ])
445
446AC_DEFINE_UNQUOTED([PATH_SEPARATOR_CHAR],['$PATH_SEPARATOR'],
447 [Define to the character that separates directories in PATH.])
448
449# Include the Maintainer's Makefile section, if it's here.
450
451MAINT_MAKEFILE=/dev/null
452AS_IF([test -r "$srcdir/maintMakefile"],
453[ MAINT_MAKEFILE="$srcdir/maintMakefile"
454])
455AC_SUBST_FILE([MAINT_MAKEFILE])
456
457# Allow building with dmalloc
458AM_WITH_DMALLOC
459
460# Forcibly disable SET_MAKE. If it's set it breaks things like the test
461# scripts, etc.
462SET_MAKE=
463
464# Sanity check and inform the user of what we found
465
466AS_IF([test "x$make_badcust" = xyes], [
467echo
468echo "WARNING: --with-customs specified but no customs.h could be found;"
469echo " disabling Customs support."
470echo
471])
472
473AS_CASE([$with_customs],
474[""|n|no|y|ye|yes], [:],
475[AS_IF([test -f "$with_customs/lib/libcustoms.a"], [:],
476[ echo
477 echo "WARNING: '$with_customs/lib' does not appear to contain the"
478 echo " Customs library. You must build and install Customs"
479 echo " before compiling GNU make."
480 echo
481])])
482
483AS_IF([test "x$has_wait_nohang" = xno],
484[ echo
485 echo "WARNING: Your system has neither waitpid() nor wait3()."
486 echo " Without one of these, signal handling is unreliable."
487 echo " You should be aware that running GNU make with -j"
488 echo " could result in erratic behavior."
489 echo
490])
491
492AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes],
493[ echo
494 echo "WARNING: Make job server requires a POSIX-ish system that"
495 echo " supports the pipe(), sigaction(), and either"
496 echo " waitpid() or wait3() functions. Your system doesn't"
497 echo " appear to provide one or more of those."
498 echo " Disabling job server support."
499 echo
500])
501
502AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes],
503[ echo
504 echo "WARNING: 'load' support requires a POSIX-ish system that"
505 echo " supports the dlopen(), dlsym(), and dlerror() functions."
506 echo " Your system doesn't appear to provide one or more of these."
507 echo " Disabling 'load' support."
508 echo
509])
510
511# Specify what files are to be created.
512# bird: Removed po/Makefile.in.
513#AC_CONFIG_FILES([Makefile glob/Makefile po/Makefile.in config/Makefile \
514# doc/Makefile w32/Makefile tests/config-flags.pm])
515AC_CONFIG_FILES([Makefile glob/Makefile config/Makefile \
516 doc/Makefile w32/Makefile tests/config-flags.pm])
517
518# OK, do it!
519
520AC_OUTPUT
521
522# We only generate the build.sh if we have a build.sh.in; we won't have
523# one before we've created a distribution.
524AS_IF([test -f "$srcdir/build.sh.in"],
525[ ./config.status --file build.sh
526 chmod +x build.sh
527])
528
529dnl Local Variables:
530dnl comment-start: "dnl "
531dnl comment-end: ""
532dnl comment-start-skip: "\\bdnl\\b\\s *"
533dnl compile-command: "make configure config.h.in"
534dnl End:
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