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 67GCC_WITH_TOOLEXECLIBDIR 68 69# Calculate toolexeclibdir 70# Also toolexecdir, though it's only used in toolexeclibdir 71case ${enable_version_specific_runtime_libs} in 72 yes) 73 # Need the gcc compiler version to know where to install libraries 74 # and header files if --enable-version-specific-runtime-libs option 75 # is selected. 76 toolexecdir='$(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/$multi_os_directory ;; 100 esac 101 ;; 102esac 103AC_SUBST(toolexecdir) 104AC_SUBST(toolexeclibdir) 105 106# Check the compiler. 107# The same as in boehm-gc and libstdc++. Have to borrow it from there. 108# We must force CC to /not/ be precious variables; otherwise 109# the wrong, non-multilib-adjusted value will be used in multilibs. 110# As a side effect, we have to subst CFLAGS ourselves. 111 112m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) 113m4_define([_AC_ARG_VAR_PRECIOUS],[]) 114AC_PROG_CC 115m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) 116 117AC_SUBST(CFLAGS) 118 119# In order to override CFLAGS_FOR_TARGET, all of our special flags go 120# in XCFLAGS. But we need them in CFLAGS during configury. So put them 121# in both places for now and restore CFLAGS at the end of config. 122save_CFLAGS="$CFLAGS" 123 124# Add -Wall -Werror if we are using GCC. 125if test "x$GCC" = "xyes"; then 126 XCFLAGS="$XCFLAGS -Wall -Werror" 127fi 128 129# Find other programs we need. 130AC_CHECK_TOOL(AR, ar) 131AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 132AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error) 133AC_PROG_MAKE_SET 134AC_PROG_INSTALL 135 136# See if makeinfo has been installed and is modern enough 137# that we can use it. 138ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 139 [GNU texinfo.* \([0-9][0-9.]*\)], 140 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 141AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 142 143 144# Configure libtool 145AM_PROG_LIBTOOL 146ACX_LT_HOST_FLAGS 147AC_SUBST(enable_shared) 148AC_SUBST(enable_static) 149 150AM_MAINTAINER_MODE 151 152# Create a spec file, so that compile/link tests don't fail 153test -f libgfortran.spec || touch libgfortran.spec 154FCFLAGS="$FCFLAGS -L." 155 156# We need gfortran to compile parts of the library 157# We can't use AC_PROG_FC because it expects a fully working gfortran. 158#AC_PROG_FC(gfortran) 159case `echo $GFORTRAN` in 160 -* | no* ) 161 FC=no ;; 162 *) 163 set dummy $GFORTRAN; ac_word=$2 164 if test -x "$ac_word"; then 165 FC="$GFORTRAN" 166 else 167 FC=no 168 fi ;; 169esac 170AC_PROG_FC(gfortran) 171FCFLAGS="$FCFLAGS -Wall -L../libgfortran" 172 173# For libtool versioning info, format is CURRENT:REVISION:AGE 174libtool_VERSION=1:0:0 175AC_SUBST(libtool_VERSION) 176 177# Check header files. 178AC_STDC_HEADERS 179AC_HEADER_TIME 180ACX_HEADER_STRING 181AC_CHECK_HEADERS(pthread.h unistd.h semaphore.h sys/loadavg.h sys/sysctl.h sys/time.h) 182 183XPCFLAGS="" 184case "$host" in 185 *-*-rtems*) 186 # RTEMS supports Pthreads, but the library is not available at GCC build time. 187 ;; 188 nvptx*-*-* | amdgcn*-*-*) 189 # NVPTX does not support Pthreads, has its own code replacement. 190 libgomp_use_pthreads=no 191 # NVPTX is an accelerator-only target 192 libgomp_offloaded_only=yes 193 ;; 194 *) 195 # Check to see if -pthread or -lpthread is needed. Prefer the former. 196 # In case the pthread.h system header is not found, this test will fail. 197 CFLAGS="$CFLAGS -pthread" 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 [XPCFLAGS=" -Wc,-pthread"], 204 [CFLAGS="$save_CFLAGS" LIBS="-lpthread $LIBS" 205 AC_LINK_IFELSE( 206 [AC_LANG_PROGRAM( 207 [#include <pthread.h> 208 void *g(void *d) { return NULL; }], 209 [pthread_t t; pthread_create(&t,NULL,g,NULL);])], 210 [], 211 [AC_MSG_ERROR([Pthreads are required to build libgomp])])]) 212esac 213 214if test x$libgomp_use_pthreads != xno; then 215 AC_DEFINE(LIBGOMP_USE_PTHREADS, 1, 216 [Define to 1 if libgomp should use POSIX threads.]) 217fi 218 219if test x$libgomp_offloaded_only = xyes; then 220 AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1, 221 [Define to 1 if building libgomp for an accelerator-only target.]) 222fi 223 224AC_CHECK_SIZEOF([void *]) 225 226m4_include([plugin/configfrag.ac]) 227 228# Check for functions needed. 229AC_CHECK_FUNCS(getloadavg clock_gettime strtoull) 230AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc) 231 232# Check for broken semaphore implementation on darwin. 233# sem_init returns: sem_init error: Function not implemented. 234case "$host" in 235 *-darwin*) 236 AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, 237 Define if the POSIX Semaphores do not work on your system.) 238 ;; 239esac 240 241# RTEMS specific checks 242case "$host" in 243 *-*-rtems*) 244 AC_CHECK_TYPES([struct _Mutex_Control],[],[],[#include <sys/lock.h>]) 245 ;; 246esac 247 248GCC_LINUX_FUTEX(:) 249 250# Check for pthread_{,attr_}[sg]etaffinity_np. 251AC_LINK_IFELSE( 252 [AC_LANG_PROGRAM( 253 [#define _GNU_SOURCE 254 #include <pthread.h>], 255 [cpu_set_t cpuset; 256 pthread_attr_t attr; 257 pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset); 258 if (CPU_ISSET (0, &cpuset)) 259 CPU_SET (1, &cpuset); 260 else 261 CPU_ZERO (&cpuset); 262 pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset); 263 pthread_attr_init (&attr); 264 pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset); 265 pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])], 266 AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1, 267[ Define if pthread_{,attr_}{g,s}etaffinity_np is supported.])) 268 269# At least for glibc, clock_gettime is in librt. But don't pull that 270# in if it still doesn't give us the function we want. 271if test $ac_cv_func_clock_gettime = no; then 272 AC_CHECK_LIB(rt, clock_gettime, 273 [LIBS="-lrt $LIBS" 274 AC_DEFINE(HAVE_CLOCK_GETTIME, 1, 275 [Define to 1 if you have the `clock_gettime' function.])]) 276fi 277 278# Check for uname. 279AC_COMPILE_IFELSE( 280 [AC_LANG_PROGRAM( 281 [#include <string.h> 282 #include <stdlib.h> 283 #include <sys/utsname.h>], 284 [struct utsname buf; 285 volatile size_t len = 0; 286 if (!uname (buf)) 287 len = strlen (buf.nodename);])], 288 AC_DEFINE(HAVE_UNAME, 1, 289[ Define if uname is supported and struct utsname has nodename field.])) 290 291# Check for gethostname. 292AC_COMPILE_IFELSE( 293 [AC_LANG_PROGRAM( 294 [#include <unistd.h>], 295 [ 296changequote(,)dnl 297 char buf[256]; 298 if (gethostname (buf, sizeof (buf) - 1) == 0) 299 buf[255] = '\0'; 300changequote([,])dnl 301 ])], 302 AC_DEFINE(HAVE_GETHOSTNAME, 1, 303[ Define if gethostname is supported.])) 304 305# Check for getpid. 306AC_COMPILE_IFELSE( 307 [AC_LANG_PROGRAM( 308 [#include <unistd.h>], 309 [int pid = getpid ();])], 310 AC_DEFINE(HAVE_GETPID, 1, 311[ Define if getpid is supported.])) 312 313# See if we support thread-local storage. 314GCC_CHECK_TLS 315 316# See if we have emulated thread-local storage. 317GCC_CHECK_EMUTLS 318 319# See what sort of export controls are available. 320LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY 321LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT 322LIBGOMP_CHECK_ATTRIBUTE_ALIAS 323LIBGOMP_ENABLE_SYMVERS 324 325if test $enable_symvers = gnu; then 326 AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1, 327 [Define to 1 if GNU symbol versioning is used for libgomp.]) 328fi 329 330# Determine cpu count to limit testsuite parallelism. 331AX_COUNT_CPUS 332AC_SUBST(CPU_COUNT) 333 334# Get target configury. 335. ${srcdir}/configure.tgt 336CFLAGS="$save_CFLAGS $XCFLAGS" 337 338# Check for __sync_val_compare_and_swap, but only after the target has 339# had a chance to set XCFLAGS. 340LIBGOMP_CHECK_SYNC_BUILTINS 341 342XCFLAGS="$XCFLAGS$XPCFLAGS" 343 344# Add CET specific flags if CET is enabled 345GCC_CET_FLAGS(CET_FLAGS) 346XCFLAGS="$XCFLAGS $CET_FLAGS" 347FCFLAGS="$FCFLAGS $CET_FLAGS" 348 349AC_SUBST(config_path) 350AC_SUBST(XCFLAGS) 351AC_SUBST(XLDFLAGS) 352 353# Conditionalize the makefile for this target machine. 354tmake_file_= 355for f in ${tmake_file} 356do 357 if test -f ${srcdir}/config/$f 358 then 359 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" 360 fi 361done 362tmake_file="${tmake_file_}" 363AC_SUBST(tmake_file) 364 365# Cleanup and exit. 366CFLAGS="$save_CFLAGS" 367AC_CACHE_SAVE 368 369if test ${multilib} = yes; then 370 multilib_arg="--enable-multilib" 371else 372 multilib_arg= 373fi 374 375# Set up the set of libraries that we need to link against for libgomp. 376# Note that the GOMP_SELF_SPEC in gcc.c may force -pthread, 377# which will force linkage against -lpthread (or equivalent for the system). 378# That's not 100% ideal, but about the best we can do easily. 379if test $enable_shared = yes; then 380 link_gomp="-lgomp %{static: $LIBS}" 381else 382 link_gomp="-lgomp $LIBS" 383fi 384AC_SUBST(link_gomp) 385 386AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes]) 387 388# ??? 2006-01-24: Paulo committed to asking autoconf folk to document 389# and export AC_COMPUTE_INT. If that happens, then we'll need to remove 390# the underscore here and update the PREREQ. If it doesn't, then we'll 391# need to copy this macro to our acinclude.m4. 392save_CFLAGS="$CFLAGS" 393for i in $config_path; do 394 if test -f $srcdir/config/$i/omp-lock.h; then 395 CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h" 396 break 397 fi 398done 399 400_AC_COMPUTE_INT([sizeof (__INTPTR_TYPE__)], [INTPTR_T_KIND]) 401_AC_COMPUTE_INT([sizeof (__int128)], [OMP_INT128_SIZE],,[OMP_INT128_SIZE=0]) 402_AC_COMPUTE_INT([2*sizeof (__INTPTR_TYPE__)], [OMP_DEPEND_KIND],, 403 [OMP_DEPEND_KIND=0]) 404_AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],, 405 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])]) 406_AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN]) 407_AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE]) 408_AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN]) 409_AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],, 410 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])]) 411_AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN]) 412_AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE]) 413_AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN]) 414 415# If the lock fits in an integer, then arrange for Fortran to use that 416# integer. If it doesn't, then arrange for Fortran to use a pointer. 417# Except that we don't have a way at present to multi-lib the installed 418# Fortran modules, so we assume 8 bytes for pointers, regardless of the 419# actual target. 420OMP_LOCK_KIND=$OMP_LOCK_SIZE 421OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE 422if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then 423 OMP_LOCK_KIND=8 424fi 425if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then 426 OMP_NEST_LOCK_KIND=8 427fi 428OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE 429OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE 430if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then 431 OMP_LOCK_25_KIND=8 432fi 433if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then 434 OMP_NEST_LOCK_25_KIND=8 435fi 436if test $OMP_DEPEND_KIND -eq 16; then 437 if test $OMP_INT128_SIZE -ne 16; then 438 AC_MSG_ERROR([unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind]) 439 fi 440else 441 if test $OMP_DEPEND_KIND -ne 8; then 442 AC_MSG_ERROR([unsupported system, cannot find Fortran integer kind for omp_depend_kind]) 443 fi 444fi 445 446AC_SUBST(INTPTR_T_KIND) 447AC_SUBST(OMP_LOCK_SIZE) 448AC_SUBST(OMP_LOCK_ALIGN) 449AC_SUBST(OMP_NEST_LOCK_SIZE) 450AC_SUBST(OMP_NEST_LOCK_ALIGN) 451AC_SUBST(OMP_LOCK_KIND) 452AC_SUBST(OMP_NEST_LOCK_KIND) 453AC_SUBST(OMP_LOCK_25_SIZE) 454AC_SUBST(OMP_LOCK_25_ALIGN) 455AC_SUBST(OMP_NEST_LOCK_25_SIZE) 456AC_SUBST(OMP_NEST_LOCK_25_ALIGN) 457AC_SUBST(OMP_LOCK_25_KIND) 458AC_SUBST(OMP_NEST_LOCK_25_KIND) 459AC_SUBST(OMP_DEPEND_KIND) 460CFLAGS="$save_CFLAGS" 461 462# Determine what GCC version number to use in filesystem paths. 463GCC_BASE_VER 464 465AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h) 466AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec) 467AC_CONFIG_FILES([testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in]) 468AC_CONFIG_FILES([testsuite/libgomp-site-extra.exp]) 469AC_OUTPUT 470