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/time.h sys/time.h) 174 175GCC_HEADER_STDINT(gstdint.h) 176 177XPCFLAGS="" 178case "$host" in 179 *-*-rtems*) 180 # RTEMS supports Pthreads, but the library is not available at GCC build time. 181 ;; 182 *) 183 # Check to see if -pthread or -lpthread is needed. Prefer the former. 184 # In case the pthread.h system header is not found, this test will fail. 185 CFLAGS="$CFLAGS -pthread" 186 AC_LINK_IFELSE( 187 [AC_LANG_PROGRAM( 188 [#include <pthread.h> 189 void *g(void *d) { return NULL; }], 190 [pthread_t t; pthread_create(&t,NULL,g,NULL);])], 191 [XPCFLAGS=" -Wc,-pthread"], 192 [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS" 193 AC_LINK_IFELSE( 194 [AC_LANG_PROGRAM( 195 [#include <pthread.h> 196 void *g(void *d) { return NULL; }], 197 [pthread_t t; pthread_create(&t,NULL,g,NULL);])], 198 [], 199 [AC_MSG_ERROR([Pthreads are required to build libgomp])])]) 200esac 201 202m4_include([plugin/configfrag.ac]) 203 204# Check for functions needed. 205AC_CHECK_FUNCS(getloadavg clock_gettime strtoull) 206 207# Check for broken semaphore implementation on darwin. 208# sem_init returns: sem_init error: Function not implemented. 209case "$host" in 210 *-darwin*) 211 AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, 212 Define if the POSIX Semaphores do not work on your system.) 213 ;; 214esac 215 216GCC_LINUX_FUTEX(:) 217 218# Check for pthread_{,attr_}[sg]etaffinity_np. 219AC_LINK_IFELSE( 220 [AC_LANG_PROGRAM( 221 [#define _GNU_SOURCE 222 #include <pthread.h>], 223 [cpu_set_t cpuset; 224 pthread_attr_t attr; 225 pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset); 226 if (CPU_ISSET (0, &cpuset)) 227 CPU_SET (1, &cpuset); 228 else 229 CPU_ZERO (&cpuset); 230 pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset); 231 pthread_attr_init (&attr); 232 pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset); 233 pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])], 234 AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1, 235[ Define if pthread_{,attr_}{g,s}etaffinity_np is supported.])) 236 237# At least for glibc, clock_gettime is in librt. But don't pull that 238# in if it still doesn't give us the function we want. 239if test $ac_cv_func_clock_gettime = no; then 240 AC_CHECK_LIB(rt, clock_gettime, 241 [LIBS="-lrt $LIBS" 242 AC_DEFINE(HAVE_CLOCK_GETTIME, 1, 243 [Define to 1 if you have the `clock_gettime' function.])]) 244fi 245 246# See if we support thread-local storage. 247GCC_CHECK_TLS 248 249# See if we have emulated thread-local storage. 250GCC_CHECK_EMUTLS 251 252# See what sort of export controls are available. 253LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY 254LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT 255LIBGOMP_CHECK_ATTRIBUTE_ALIAS 256LIBGOMP_ENABLE_SYMVERS 257 258if test $enable_symvers = gnu; then 259 AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1, 260 [Define to 1 if GNU symbol versioning is used for libgomp.]) 261fi 262 263# Get target configury. 264. ${srcdir}/configure.tgt 265CFLAGS="$save_CFLAGS $XCFLAGS" 266 267# Check for __sync_val_compare_and_swap, but only after the target has 268# had a chance to set XCFLAGS. 269LIBGOMP_CHECK_SYNC_BUILTINS 270 271XCFLAGS="$XCFLAGS$XPCFLAGS" 272 273AC_SUBST(config_path) 274AC_SUBST(XCFLAGS) 275AC_SUBST(XLDFLAGS) 276 277# Cleanup and exit. 278CFLAGS="$save_CFLAGS" 279AC_CACHE_SAVE 280 281if test ${multilib} = yes; then 282 multilib_arg="--enable-multilib" 283else 284 multilib_arg= 285fi 286 287# Set up the set of libraries that we need to link against for libgomp. 288# Note that the GOMP_SELF_SPEC in gcc.c may force -pthread, 289# which will force linkage against -lpthread (or equivalent for the system). 290# That's not 100% ideal, but about the best we can do easily. 291if test $enable_shared = yes; then 292 link_gomp="-lgomp %{static: $LIBS}" 293else 294 link_gomp="-lgomp $LIBS" 295fi 296AC_SUBST(link_gomp) 297 298AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes]) 299 300# ??? 2006-01-24: Paulo committed to asking autoconf folk to document 301# and export AC_COMPUTE_INT. If that happens, then we'll need to remove 302# the underscore here and update the PREREQ. If it doesn't, then we'll 303# need to copy this macro to our acinclude.m4. 304save_CFLAGS="$CFLAGS" 305for i in $config_path; do 306 if test -f $srcdir/config/$i/omp-lock.h; then 307 CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h" 308 break 309 fi 310done 311 312_AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],, 313 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])]) 314_AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN]) 315_AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE]) 316_AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN]) 317_AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],, 318 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])]) 319_AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN]) 320_AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE]) 321_AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN]) 322 323# If the lock fits in an integer, then arrange for Fortran to use that 324# integer. If it doesn't, then arrange for Fortran to use a pointer. 325# Except that we don't have a way at present to multi-lib the installed 326# Fortran modules, so we assume 8 bytes for pointers, regardless of the 327# actual target. 328OMP_LOCK_KIND=$OMP_LOCK_SIZE 329OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE 330if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then 331 OMP_LOCK_KIND=8 332fi 333if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then 334 OMP_NEST_LOCK_KIND=8 335fi 336OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE 337OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE 338if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then 339 OMP_LOCK_25_KIND=8 340fi 341if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then 342 OMP_NEST_LOCK_25_KIND=8 343fi 344 345AC_SUBST(OMP_LOCK_SIZE) 346AC_SUBST(OMP_LOCK_ALIGN) 347AC_SUBST(OMP_NEST_LOCK_SIZE) 348AC_SUBST(OMP_NEST_LOCK_ALIGN) 349AC_SUBST(OMP_LOCK_KIND) 350AC_SUBST(OMP_NEST_LOCK_KIND) 351AC_SUBST(OMP_LOCK_25_SIZE) 352AC_SUBST(OMP_LOCK_25_ALIGN) 353AC_SUBST(OMP_NEST_LOCK_25_SIZE) 354AC_SUBST(OMP_NEST_LOCK_25_ALIGN) 355AC_SUBST(OMP_LOCK_25_KIND) 356AC_SUBST(OMP_NEST_LOCK_25_KIND) 357CFLAGS="$save_CFLAGS" 358 359AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h) 360AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec) 361AC_CONFIG_FILES([testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in]) 362AC_OUTPUT 363