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