]> git.ipfire.org Git - thirdparty/gcc.git/blob - libgomp/configure.ac
[prange] Fix thinko in prange::update_bitmask() [PR115026]
[thirdparty/gcc.git] / libgomp / configure.ac
1 # Process this file with autoconf to produce a configure script, like so:
2 # aclocal -I ../config && autoconf && autoheader && automake
3
4 AC_INIT([GNU Offloading and Multi Processing Runtime Library], 1.0,,[libgomp])
5 AC_CONFIG_HEADER(config.h)
6
7 # -------
8 # Options
9 # -------
10
11 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
12 LIBGOMP_ENABLE(version-specific-runtime-libs, no, ,
13 [Specify that runtime libraries should be installed in a compiler-specific directory],
14 permit yes|no)
15 AC_MSG_RESULT($enable_version_specific_runtime_libs)
16
17 # We would like our source tree to be readonly. However when releases or
18 # pre-releases are generated, the flex/bison generated files as well as the
19 # various formats of manuals need to be included along with the rest of the
20 # sources. Therefore we have --enable-generated-files-in-srcdir to do
21 # just that.
22 AC_MSG_CHECKING([for --enable-generated-files-in-srcdir])
23 LIBGOMP_ENABLE(generated-files-in-srcdir, no, ,
24 [put copies of generated files in source dir intended for creating source
25 tarballs for users without texinfo bison or flex.],
26 permit yes|no)
27 AC_MSG_RESULT($enable_generated_files_in_srcdir)
28 AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes)
29
30
31 # -------
32 # -------
33
34 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
35 #
36 # You will slowly go insane if you do not grok the following fact: when
37 # building this library, the top-level /target/ becomes the library's /host/.
38 #
39 # configure then causes --target to default to --host, exactly like any
40 # other package using autoconf. Therefore, 'target' and 'host' will
41 # always be the same. This makes sense both for native and cross compilers
42 # just think about it for a little while. :-)
43 #
44 # Also, if this library is being configured as part of a cross compiler, the
45 # top-level configure script will pass the "real" host as $with_cross_host.
46 #
47 # Do not delete or change the following two lines. For why, see
48 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html
49 AC_CANONICAL_SYSTEM
50 target_alias=${target_alias-$host_alias}
51
52 # Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the
53 # following is magically included in AUTOMAKE_OPTIONS in each Makefile.am.
54 # 1.9.0: minimum required version
55 # no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch
56 # of other PACKAGE_* variables will, however, and there's nothing
57 # we can do about that; they come from AC_INIT).
58 # foreign: we don't follow the normal rules for GNU packages (no COPYING
59 # file in the top srcdir, etc, etc), so stop complaining.
60 # no-dist: we don't want 'dist' and related rules.
61 # -Wall: turns on all automake warnings...
62 # -Wno-portability: ...except this one, since GNU make is required.
63 # -Wno-override: ... and this one, since we do want this in testsuite.
64 AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override])
65 AM_ENABLE_MULTILIB(, ..)
66
67 GCC_WITH_TOOLEXECLIBDIR
68
69 # Calculate toolexeclibdir
70 # Also toolexecdir, though it's only used in toolexeclibdir
71 case ${enable_version_specific_runtime_libs} in
72 yes)
73 # Need the gcc compiler version to know where to install libraries
74 # and header files if --enable-version-specific-runtime-libs option
75 # is selected.
76 toolexecdir='$(libdir)/gcc/$(target_alias)'
77 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
78 ;;
79 no)
80 if test -n "$with_cross_host" &&
81 test x"$with_cross_host" != x"no"; then
82 # Install a library built with a cross compiler in tooldir, not libdir.
83 toolexecdir='$(exec_prefix)/$(target_alias)'
84 case ${with_toolexeclibdir} in
85 no)
86 toolexeclibdir='$(toolexecdir)/lib'
87 ;;
88 *)
89 toolexeclibdir=${with_toolexeclibdir}
90 ;;
91 esac
92 else
93 toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
94 toolexeclibdir='$(libdir)'
95 fi
96 multi_os_directory=`$CC -print-multi-os-directory`
97 case $multi_os_directory in
98 .) ;; # Avoid trailing /.
99 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
100 esac
101 ;;
102 esac
103 AC_SUBST(toolexecdir)
104 AC_SUBST(toolexeclibdir)
105
106 # Check the compiler.
107 # The same as in boehm-gc and libstdc++. Have to borrow it from there.
108 # We must force CC to /not/ be precious variables; otherwise
109 # the wrong, non-multilib-adjusted value will be used in multilibs.
110 # As a side effect, we have to subst CFLAGS ourselves.
111
112 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
113 m4_define([_AC_ARG_VAR_PRECIOUS],[])
114 AC_PROG_CC
115 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
116
117 AC_SUBST(CFLAGS)
118
119 # In order to override CFLAGS_FOR_TARGET, all of our special flags go
120 # in XCFLAGS. But we need them in CFLAGS during configury. So put them
121 # in both places for now and restore CFLAGS at the end of config.
122 save_CFLAGS="$CFLAGS"
123
124 AC_ARG_ENABLE([werror],
125 [AS_HELP_STRING([--disable-werror], [disable building with -Werror])])
126 # Add -Wall -Werror if we are using GCC.
127 AS_IF([test "x$GCC" = "xyes"],
128 [XCFLAGS="$XCFLAGS -Wall"])
129 AS_IF([test "x$enable_werror" != "xno" && test "x$GCC" = "xyes"],
130 [XCFLAGS="$XCFLAGS -Werror"])
131
132 # Find other programs we need.
133 AC_CHECK_TOOL(AR, ar)
134 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
135 AC_PROG_MAKE_SET
136 AC_PROG_INSTALL
137
138 # See if makeinfo has been installed and is modern enough
139 # that we can use it.
140 ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version],
141 [GNU texinfo.* \([0-9][0-9.]*\)],
142 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*])
143 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
144
145
146 # Configure libtool
147 AM_PROG_LIBTOOL
148 ACX_LT_HOST_FLAGS
149 AC_SUBST(enable_shared)
150 AC_SUBST(enable_static)
151 AM_CONDITIONAL([ENABLE_DARWIN_AT_RPATH], [test x$enable_darwin_at_rpath = xyes])
152
153 AM_MAINTAINER_MODE
154
155 # Create a spec file, so that compile/link tests don't fail
156 test -f libgfortran.spec || touch libgfortran.spec
157 FCFLAGS="$FCFLAGS -L."
158
159 # We need gfortran to compile parts of the library
160 # We can't use AC_PROG_FC because it expects a fully working gfortran.
161 #AC_PROG_FC(gfortran)
162 case `echo $GFORTRAN` in
163 -* | no* )
164 FC=no ;;
165 *)
166 set dummy $GFORTRAN; ac_word=$2
167 if test -x "$ac_word"; then
168 FC="$GFORTRAN"
169 else
170 FC=no
171 fi ;;
172 esac
173 AC_PROG_FC(gfortran)
174 FCFLAGS="$FCFLAGS -Wall -L../libgfortran"
175
176 # For libtool versioning info, format is CURRENT:REVISION:AGE
177 libtool_VERSION=1:0:0
178 AC_SUBST(libtool_VERSION)
179
180 # Check header files.
181 AC_STDC_HEADERS
182 AC_HEADER_TIME
183 ACX_HEADER_STRING
184 AC_CHECK_HEADERS(pthread.h unistd.h semaphore.h sys/loadavg.h sys/sysctl.h sys/time.h)
185
186 XPCFLAGS=""
187 case "$host" in
188 *-*-rtems*)
189 # RTEMS supports Pthreads, but the library is not available at GCC build time.
190 ;;
191 nvptx*-*-* | amdgcn*-*-*)
192 # NVPTX does not support Pthreads, has its own code replacement.
193 libgomp_use_pthreads=no
194 # NVPTX is an accelerator-only target
195 libgomp_offloaded_only=yes
196 ;;
197 *)
198 # Check to see if -pthread or -lpthread is needed. Prefer the former.
199 # In case the pthread.h system header is not found, this test will fail.
200 CFLAGS="$CFLAGS -pthread"
201 AC_LINK_IFELSE(
202 [AC_LANG_PROGRAM(
203 [#include <pthread.h>
204 void *g(void *d) { return NULL; }],
205 [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
206 [XPCFLAGS=" -Wc,-pthread"],
207 [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS"
208 AC_LINK_IFELSE(
209 [AC_LANG_PROGRAM(
210 [#include <pthread.h>
211 void *g(void *d) { return NULL; }],
212 [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
213 [],
214 [AC_MSG_ERROR([Pthreads are required to build libgomp])])])
215 esac
216
217 if test x$libgomp_use_pthreads != xno; then
218 AC_DEFINE(LIBGOMP_USE_PTHREADS, 1,
219 [Define to 1 if libgomp should use POSIX threads.])
220 fi
221
222 if test x$libgomp_offloaded_only = xyes; then
223 AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1,
224 [Define to 1 if building libgomp for an accelerator-only target.])
225 fi
226
227 if test "x$enable_offload_defaulted" = xyes; then
228 AC_DEFINE(OFFLOAD_DEFAULTED, 1,
229 [Define to 1 to if -foffload is defaulted])
230 fi
231
232 AC_CHECK_SIZEOF([void *])
233
234 m4_include([plugin/configfrag.ac])
235
236 # Check for functions needed.
237 AC_CHECK_FUNCS(getloadavg clock_gettime strtoull)
238 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
239
240 # Check for broken semaphore implementation on darwin.
241 # sem_init returns: sem_init error: Function not implemented.
242 case "$host" in
243 *-darwin*)
244 AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
245 Define if the POSIX Semaphores do not work on your system.)
246 ;;
247 esac
248
249 # RTEMS specific checks
250 case "$host" in
251 *-*-rtems*)
252 AC_CHECK_TYPES([struct _Mutex_Control],[],[],[#include <sys/lock.h>])
253 ;;
254 esac
255
256 GCC_LINUX_FUTEX(:)
257
258 # Check for pthread_{,attr_}[sg]etaffinity_np.
259 AC_LINK_IFELSE(
260 [AC_LANG_PROGRAM(
261 [#define _GNU_SOURCE
262 #include <pthread.h>],
263 [cpu_set_t cpuset;
264 pthread_attr_t attr;
265 pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
266 if (CPU_ISSET (0, &cpuset))
267 CPU_SET (1, &cpuset);
268 else
269 CPU_ZERO (&cpuset);
270 pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
271 pthread_attr_init (&attr);
272 pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
273 pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])],
274 AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1,
275 [ Define if pthread_{,attr_}{g,s}etaffinity_np is supported.]))
276
277 # At least for glibc, clock_gettime is in librt. But don't pull that
278 # in if it still doesn't give us the function we want.
279 if test $ac_cv_func_clock_gettime = no; then
280 AC_CHECK_LIB(rt, clock_gettime,
281 [LIBS="-lrt $LIBS"
282 AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
283 [Define to 1 if you have the `clock_gettime' function.])])
284 fi
285
286 # Check for uname.
287 AC_COMPILE_IFELSE(
288 [AC_LANG_PROGRAM(
289 [#include <string.h>
290 #include <stdlib.h>
291 #include <sys/utsname.h>],
292 [struct utsname buf;
293 volatile size_t len = 0;
294 if (!uname (buf))
295 len = strlen (buf.nodename);])],
296 AC_DEFINE(HAVE_UNAME, 1,
297 [ Define if uname is supported and struct utsname has nodename field.]))
298
299 # Check for gethostname.
300 AC_COMPILE_IFELSE(
301 [AC_LANG_PROGRAM(
302 [#include <unistd.h>],
303 [
304 changequote(,)dnl
305 char buf[256];
306 if (gethostname (buf, sizeof (buf) - 1) == 0)
307 buf[255] = '\0';
308 changequote([,])dnl
309 ])],
310 AC_DEFINE(HAVE_GETHOSTNAME, 1,
311 [ Define if gethostname is supported.]))
312
313 # Check for getpid.
314 AC_COMPILE_IFELSE(
315 [AC_LANG_PROGRAM(
316 [#include <unistd.h>],
317 [int pid = getpid ();])],
318 AC_DEFINE(HAVE_GETPID, 1,
319 [ Define if getpid is supported.]))
320
321 # See if we support thread-local storage.
322 GCC_CHECK_TLS
323
324 # See if we have emulated thread-local storage.
325 GCC_CHECK_EMUTLS
326
327 # See what sort of export controls are available.
328 LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY
329 LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT
330 LIBGOMP_CHECK_ATTRIBUTE_ALIAS
331 LIBGOMP_ENABLE_SYMVERS
332
333 if test $enable_symvers = gnu; then
334 AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1,
335 [Define to 1 if GNU symbol versioning is used for libgomp.])
336 fi
337
338 # Determine cpu count to limit testsuite parallelism.
339 AX_COUNT_CPUS
340 AC_SUBST(CPU_COUNT)
341
342 AC_MSG_NOTICE([checking for flock implementation])
343 AC_CHECK_PROGS(FLOCK, flock)
344 # Fallback if 'perl' is available.
345 if test -z "$FLOCK"; then
346 # These need to be absolute paths, yet at the same time need to
347 # canonicalize only relative paths, because then amd will not unmount
348 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
349 case $srcdir in
350 changequote(,)dnl
351 [\\/$]* | ?:[\\/]*) libgomp_abs_srcdir=${srcdir} ;;
352 changequote([,])dnl
353 *) libgomp_abs_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
354 esac
355 AC_CHECK_PROG(FLOCK, perl, $libgomp_abs_srcdir/testsuite/flock)
356 fi
357
358 AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET)
359
360 # Get target configury.
361 . ${srcdir}/configure.tgt
362 CFLAGS="$save_CFLAGS $XCFLAGS"
363
364 # Check for __sync_val_compare_and_swap, but only after the target has
365 # had a chance to set XCFLAGS.
366 LIBGOMP_CHECK_SYNC_BUILTINS
367
368 XCFLAGS="$XCFLAGS$XPCFLAGS"
369
370 # Add CET specific flags if CET is enabled
371 GCC_CET_FLAGS(CET_FLAGS)
372 XCFLAGS="$XCFLAGS $CET_FLAGS"
373 FCFLAGS="$FCFLAGS $CET_FLAGS"
374
375 AC_SUBST(config_path)
376 AC_SUBST(XCFLAGS)
377 AC_SUBST(XLDFLAGS)
378
379 # Conditionalize the makefile for this target machine.
380 tmake_file_=
381 for f in ${tmake_file}
382 do
383 if test -f ${srcdir}/config/$f
384 then
385 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
386 fi
387 done
388 tmake_file="${tmake_file_}"
389 AC_SUBST(tmake_file)
390
391 # Cleanup and exit.
392 CFLAGS="$save_CFLAGS"
393 AC_CACHE_SAVE
394
395 if test ${multilib} = yes; then
396 multilib_arg="--enable-multilib"
397 else
398 multilib_arg=
399 fi
400
401 # Set up the set of libraries that we need to link against for libgomp.
402 # Note that the GOMP_SELF_SPEC in gcc.c may force -pthread,
403 # which will force linkage against -lpthread (or equivalent for the system).
404 # That's not 100% ideal, but about the best we can do easily.
405 if test $enable_shared = yes; then
406 link_gomp="-lgomp %{static: $LIBS${DL_LIBS:+ $DL_LIBS}}"
407 else
408 link_gomp="-lgomp $LIBS${DL_LIBS:+ $DL_LIBS}"
409 fi
410 AC_SUBST(link_gomp)
411
412 AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes])
413
414 # ??? 2006-01-24: Paulo committed to asking autoconf folk to document
415 # and export AC_COMPUTE_INT. If that happens, then we'll need to remove
416 # the underscore here and update the PREREQ. If it doesn't, then we'll
417 # need to copy this macro to our acinclude.m4.
418 save_CFLAGS="$CFLAGS"
419 for i in $config_path; do
420 if test -f $srcdir/config/$i/omp-lock.h; then
421 CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h"
422 break
423 fi
424 done
425
426 _AC_COMPUTE_INT([sizeof (__INTPTR_TYPE__)], [INTPTR_T_KIND])
427 _AC_COMPUTE_INT([sizeof (__int128)], [OMP_INT128_SIZE],,[OMP_INT128_SIZE=0])
428 _AC_COMPUTE_INT([2*sizeof (__INTPTR_TYPE__)], [OMP_DEPEND_KIND],,
429 [OMP_DEPEND_KIND=0])
430 _AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],,
431 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])])
432 _AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN])
433 _AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE])
434 _AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN])
435 _AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],,
436 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])])
437 _AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN])
438 _AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE])
439 _AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN])
440
441 # If the lock fits in an integer, then arrange for Fortran to use that
442 # integer. If it doesn't, then arrange for Fortran to use a pointer.
443 # Except that we don't have a way at present to multi-lib the installed
444 # Fortran modules, so we assume 8 bytes for pointers, regardless of the
445 # actual target.
446 OMP_LOCK_KIND=$OMP_LOCK_SIZE
447 OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE
448 if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then
449 OMP_LOCK_KIND=8
450 fi
451 if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then
452 OMP_NEST_LOCK_KIND=8
453 fi
454 OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE
455 OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE
456 if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then
457 OMP_LOCK_25_KIND=8
458 fi
459 if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then
460 OMP_NEST_LOCK_25_KIND=8
461 fi
462 if test "$ac_cv_fc_compiler_gnu" = yes; then
463 if test $OMP_DEPEND_KIND -eq 16; then
464 if test $OMP_INT128_SIZE -ne 16; then
465 AC_MSG_ERROR([unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind])
466 fi
467 else
468 if test $OMP_DEPEND_KIND -ne 8; then
469 AC_MSG_ERROR([unsupported system, cannot find Fortran integer kind for omp_depend_kind])
470 fi
471 fi
472 fi
473
474 AC_SUBST(INTPTR_T_KIND)
475 AC_SUBST(OMP_LOCK_SIZE)
476 AC_SUBST(OMP_LOCK_ALIGN)
477 AC_SUBST(OMP_NEST_LOCK_SIZE)
478 AC_SUBST(OMP_NEST_LOCK_ALIGN)
479 AC_SUBST(OMP_LOCK_KIND)
480 AC_SUBST(OMP_NEST_LOCK_KIND)
481 AC_SUBST(OMP_LOCK_25_SIZE)
482 AC_SUBST(OMP_LOCK_25_ALIGN)
483 AC_SUBST(OMP_NEST_LOCK_25_SIZE)
484 AC_SUBST(OMP_NEST_LOCK_25_ALIGN)
485 AC_SUBST(OMP_LOCK_25_KIND)
486 AC_SUBST(OMP_NEST_LOCK_25_KIND)
487 AC_SUBST(OMP_DEPEND_KIND)
488 CFLAGS="$save_CFLAGS"
489
490 # Determine what GCC version number to use in filesystem paths.
491 GCC_BASE_VER
492
493 AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h)
494 AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec)
495 AC_CONFIG_FILES([testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in])
496 AC_CONFIG_FILES([testsuite/libgomp-site-extra.exp])
497 AC_OUTPUT