1# Process this file with autoconf to produce a configure script, like so: 2# aclocal -I ../config && autoconf && autoheader && automake 3 4AC_PREREQ(2.64) 5AC_INIT([GNU Offloading and Multi Processing Runtime Library], 1.0,,[libgomp]) 6AC_CONFIG_HEADER(config.h) 7 8# ------- 9# Options 10# ------- 11 12AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 13LIBGOMP_ENABLE(version-specific-runtime-libs, no, , 14 [Specify that runtime libraries should be installed in a compiler-specific directory], 15 permit yes|no) 16AC_MSG_RESULT($enable_version_specific_runtime_libs) 17 18# We would like our source tree to be readonly. However when releases or 19# pre-releases are generated, the flex/bison generated files as well as the 20# various formats of manuals need to be included along with the rest of the 21# sources. Therefore we have --enable-generated-files-in-srcdir to do 22# just that. 23AC_MSG_CHECKING([for --enable-generated-files-in-srcdir]) 24LIBGOMP_ENABLE(generated-files-in-srcdir, no, , 25 [put copies of generated files in source dir intended for creating source 26 tarballs for users without texinfo bison or flex.], 27 permit yes|no) 28AC_MSG_RESULT($enable_generated_files_in_srcdir) 29AM_CONDITIONAL(GENINSRC, test "$enable_generated_files_in_srcdir" = yes) 30 31 32# ------- 33# ------- 34 35# Gets build, host, target, *_vendor, *_cpu, *_os, etc. 36# 37# You will slowly go insane if you do not grok the following fact: when 38# building this library, the top-level /target/ becomes the library's /host/. 39# 40# configure then causes --target to default to --host, exactly like any 41# other package using autoconf. Therefore, 'target' and 'host' will 42# always be the same. This makes sense both for native and cross compilers 43# just think about it for a little while. :-) 44# 45# Also, if this library is being configured as part of a cross compiler, the 46# top-level configure script will pass the "real" host as $with_cross_host. 47# 48# Do not delete or change the following two lines. For why, see 49# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 50AC_CANONICAL_SYSTEM 51target_alias=${target_alias-$host_alias} 52 53# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the 54# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. 55# 1.9.0: minimum required version 56# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch 57# of other PACKAGE_* variables will, however, and there's nothing 58# we can do about that; they come from AC_INIT). 59# foreign: we don't follow the normal rules for GNU packages (no COPYING 60# file in the top srcdir, etc, etc), so stop complaining. 61# no-dist: we don't want 'dist' and related rules. 62# -Wall: turns on all automake warnings... 63# -Wno-portability: ...except this one, since GNU make is required. 64# -Wno-override: ... and this one, since we do want this in testsuite. 65AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override]) 66AM_ENABLE_MULTILIB(, ..) 67 68# Calculate toolexeclibdir 69# Also toolexecdir, though it's only used in toolexeclibdir 70case ${enable_version_specific_runtime_libs} in 71 yes) 72 # Need the gcc compiler version to know where to install libraries 73 # and header files if --enable-version-specific-runtime-libs option 74 # is selected. 75 toolexecdir='$(libdir)/gcc/$(target_alias)' 76 toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)' 77 ;; 78 no) 79 if test -n "$with_cross_host" && 80 test x"$with_cross_host" != x"no"; then 81 # Install a library built with a cross compiler in tooldir, not libdir. 82 toolexecdir='$(exec_prefix)/$(target_alias)' 83 toolexeclibdir='$(toolexecdir)/lib' 84 else 85 toolexecdir='$(libdir)/gcc-lib/$(target_alias)' 86 toolexeclibdir='$(libdir)' 87 fi 88 multi_os_directory=`$CC -print-multi-os-directory` 89 case $multi_os_directory in 90 .) ;; # Avoid trailing /. 91 *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;; 92 esac 93 ;; 94esac 95AC_SUBST(toolexecdir) 96AC_SUBST(toolexeclibdir) 97 98# Check the compiler. 99# The same as in boehm-gc and libstdc++. Have to borrow it from there. 100# We must force CC to /not/ be precious variables; otherwise 101# the wrong, non-multilib-adjusted value will be used in multilibs. 102# As a side effect, we have to subst CFLAGS ourselves. 103 104m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) 105m4_define([_AC_ARG_VAR_PRECIOUS],[]) 106AC_PROG_CC 107m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) 108 109AC_SUBST(CFLAGS) 110 111# In order to override CFLAGS_FOR_TARGET, all of our special flags go 112# in XCFLAGS. But we need them in CFLAGS during configury. So put them 113# in both places for now and restore CFLAGS at the end of config. 114save_CFLAGS="$CFLAGS" 115 116# Add -Wall -Werror if we are using GCC. 117if test "x$GCC" = "xyes"; then 118 XCFLAGS="$XCFLAGS -Wall -Werror" 119fi 120 121# Find other programs we need. 122AC_CHECK_TOOL(AR, ar) 123AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 124AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error) 125AC_PROG_MAKE_SET 126AC_PROG_INSTALL 127 128# See if makeinfo has been installed and is modern enough 129# that we can use it. 130ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 131 [GNU texinfo.* \([0-9][0-9.]*\)], 132 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 133AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 134 135 136# Configure libtool 137AM_PROG_LIBTOOL 138ACX_LT_HOST_FLAGS 139AC_SUBST(enable_shared) 140AC_SUBST(enable_static) 141 142AM_MAINTAINER_MODE 143 144# Create a spec file, so that compile/link tests don't fail 145test -f libgfortran.spec || touch libgfortran.spec 146FCFLAGS="$FCFLAGS -L." 147 148# We need gfortran to compile parts of the library 149# We can't use AC_PROG_FC because it expects a fully working gfortran. 150#AC_PROG_FC(gfortran) 151case `echo $GFORTRAN` in 152 -* | no* ) 153 FC=no ;; 154 *) 155 set dummy $GFORTRAN; ac_word=$2 156 if test -x "$ac_word"; then 157 FC="$GFORTRAN" 158 else 159 FC=no 160 fi ;; 161esac 162AC_PROG_FC(gfortran) 163FCFLAGS="$FCFLAGS -Wall -L../libgfortran" 164 165# For libtool versioning info, format is CURRENT:REVISION:AGE 166libtool_VERSION=1:0:0 167AC_SUBST(libtool_VERSION) 168 169# Check header files. 170AC_STDC_HEADERS 171AC_HEADER_TIME 172ACX_HEADER_STRING 173AC_CHECK_HEADERS(pthread.h unistd.h semaphore.h sys/loadavg.h sys/sysctl.h sys/time.h) 174 175GCC_HEADER_STDINT(gstdint.h) 176 177XPCFLAGS="" 178case "$host" in 179 *-*-rtems*) 180 # RTEMS supports Pthreads, but the library is not available at GCC build time. 181 ;; 182 nvptx*-*-*) 183 # NVPTX does not support Pthreads, has its own code replacement. 184 libgomp_use_pthreads=no 185 # NVPTX is an accelerator-only target 186 libgomp_offloaded_only=yes 187 ;; 188 *) 189 # Check to see if -pthread or -lpthread is needed. Prefer the former. 190 # In case the pthread.h system header is not found, this test will fail. 191 CFLAGS="$CFLAGS -pthread" 192 AC_LINK_IFELSE( 193 [AC_LANG_PROGRAM( 194 [#include <pthread.h> 195 void *g(void *d) { return NULL; }], 196 [pthread_t t; pthread_create(&t,NULL,g,NULL);])], 197 [XPCFLAGS=" -Wc,-pthread"], 198 [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS" 199 AC_LINK_IFELSE( 200 [AC_LANG_PROGRAM( 201 [#include <pthread.h> 202 void *g(void *d) { return NULL; }], 203 [pthread_t t; pthread_create(&t,NULL,g,NULL);])], 204 [], 205 [AC_MSG_ERROR([Pthreads are required to build libgomp])])]) 206esac 207 208if test x$libgomp_use_pthreads != xno; then 209 AC_DEFINE(LIBGOMP_USE_PTHREADS, 1, 210 [Define to 1 if libgomp should use POSIX threads.]) 211fi 212 213if test x$libgomp_offloaded_only = xyes; then 214 AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1, 215 [Define to 1 if building libgomp for an accelerator-only target.]) 216fi 217 218m4_include([plugin/configfrag.ac]) 219 220# Check for functions needed. 221AC_CHECK_FUNCS(getloadavg clock_gettime strtoull) 222 223# Check for broken semaphore implementation on darwin. 224# sem_init returns: sem_init error: Function not implemented. 225case "$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# See if we support thread-local storage. 270GCC_CHECK_TLS 271 272# See if we have emulated thread-local storage. 273GCC_CHECK_EMUTLS 274 275# See what sort of export controls are available. 276LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY 277LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT 278LIBGOMP_CHECK_ATTRIBUTE_ALIAS 279LIBGOMP_ENABLE_SYMVERS 280 281if test $enable_symvers = gnu; then 282 AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1, 283 [Define to 1 if GNU symbol versioning is used for libgomp.]) 284fi 285 286# Get target configury. 287. ${srcdir}/configure.tgt 288CFLAGS="$save_CFLAGS $XCFLAGS" 289 290# Check for __sync_val_compare_and_swap, but only after the target has 291# had a chance to set XCFLAGS. 292LIBGOMP_CHECK_SYNC_BUILTINS 293 294XCFLAGS="$XCFLAGS$XPCFLAGS" 295 296# Add CET specific flags if CET is enabled 297GCC_CET_FLAGS(CET_FLAGS) 298XCFLAGS="$XCFLAGS $CET_FLAGS" 299FCFLAGS="$FCFLAGS $CET_FLAGS" 300 301AC_SUBST(config_path) 302AC_SUBST(XCFLAGS) 303AC_SUBST(XLDFLAGS) 304 305# Cleanup and exit. 306CFLAGS="$save_CFLAGS" 307AC_CACHE_SAVE 308 309if test ${multilib} = yes; then 310 multilib_arg="--enable-multilib" 311else 312 multilib_arg= 313fi 314 315# Set up the set of libraries that we need to link against for libgomp. 316# Note that the GOMP_SELF_SPEC in gcc.c may force -pthread, 317# which will force linkage against -lpthread (or equivalent for the system). 318# That's not 100% ideal, but about the best we can do easily. 319if test $enable_shared = yes; then 320 link_gomp="-lgomp %{static: $LIBS}" 321else 322 link_gomp="-lgomp $LIBS" 323fi 324AC_SUBST(link_gomp) 325 326AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes]) 327 328# ??? 2006-01-24: Paulo committed to asking autoconf folk to document 329# and export AC_COMPUTE_INT. If that happens, then we'll need to remove 330# the underscore here and update the PREREQ. If it doesn't, then we'll 331# need to copy this macro to our acinclude.m4. 332save_CFLAGS="$CFLAGS" 333for i in $config_path; do 334 if test -f $srcdir/config/$i/omp-lock.h; then 335 CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h" 336 break 337 fi 338done 339 340_AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],, 341 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])]) 342_AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN]) 343_AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE]) 344_AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN]) 345_AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],, 346 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])]) 347_AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN]) 348_AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE]) 349_AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN]) 350 351# If the lock fits in an integer, then arrange for Fortran to use that 352# integer. If it doesn't, then arrange for Fortran to use a pointer. 353# Except that we don't have a way at present to multi-lib the installed 354# Fortran modules, so we assume 8 bytes for pointers, regardless of the 355# actual target. 356OMP_LOCK_KIND=$OMP_LOCK_SIZE 357OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE 358if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then 359 OMP_LOCK_KIND=8 360fi 361if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then 362 OMP_NEST_LOCK_KIND=8 363fi 364OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE 365OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE 366if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then 367 OMP_LOCK_25_KIND=8 368fi 369if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then 370 OMP_NEST_LOCK_25_KIND=8 371fi 372 373AC_SUBST(OMP_LOCK_SIZE) 374AC_SUBST(OMP_LOCK_ALIGN) 375AC_SUBST(OMP_NEST_LOCK_SIZE) 376AC_SUBST(OMP_NEST_LOCK_ALIGN) 377AC_SUBST(OMP_LOCK_KIND) 378AC_SUBST(OMP_NEST_LOCK_KIND) 379AC_SUBST(OMP_LOCK_25_SIZE) 380AC_SUBST(OMP_LOCK_25_ALIGN) 381AC_SUBST(OMP_NEST_LOCK_25_SIZE) 382AC_SUBST(OMP_NEST_LOCK_25_ALIGN) 383AC_SUBST(OMP_LOCK_25_KIND) 384AC_SUBST(OMP_NEST_LOCK_25_KIND) 385CFLAGS="$save_CFLAGS" 386 387# Determine what GCC version number to use in filesystem paths. 388GCC_BASE_VER 389 390AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h) 391AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec) 392AC_CONFIG_FILES([testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in]) 393AC_OUTPUT 394