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 124AC_ARG_ENABLE([werror], 125 [AS_HELP_STRING([--disable-werror], [disable building with -Werror])]) 126# Add -Wall -Werror if we are using GCC. 127AS_IF([test "x$GCC" = "xyes"], 128 [XCFLAGS="$XCFLAGS -Wall"]) 129AS_IF([test "x$enable_werror" != "xno" && test "x$GCC" = "xyes"], 130 [XCFLAGS="$XCFLAGS -Werror"]) 131 132# Find other programs we need. 133AC_CHECK_TOOL(AR, ar) 134AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 135AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error) 136AC_PROG_MAKE_SET 137AC_PROG_INSTALL 138 139# See if makeinfo has been installed and is modern enough 140# that we can use it. 141ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 142 [GNU texinfo.* \([0-9][0-9.]*\)], 143 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 144AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 145 146 147# Configure libtool 148AM_PROG_LIBTOOL 149ACX_LT_HOST_FLAGS 150AC_SUBST(enable_shared) 151AC_SUBST(enable_static) 152 153AM_MAINTAINER_MODE 154 155# Create a spec file, so that compile/link tests don't fail 156test -f libgfortran.spec || touch libgfortran.spec 157FCFLAGS="$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) 162case `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="$GFORTRAN" 169 else 170 FC=no 171 fi ;; 172esac 173AC_PROG_FC(gfortran) 174FCFLAGS="$FCFLAGS -Wall -L../libgfortran" 175 176# For libtool versioning info, format is CURRENT:REVISION:AGE 177libtool_VERSION=1:0:0 178AC_SUBST(libtool_VERSION) 179 180# Check header files. 181AC_STDC_HEADERS 182AC_HEADER_TIME 183ACX_HEADER_STRING 184AC_CHECK_HEADERS(pthread.h unistd.h semaphore.h sys/loadavg.h sys/sysctl.h sys/time.h) 185 186XPCFLAGS="" 187case "$host" in 188 *-*-rtems*) 189 # RTEMS supports Pthreads, but the library is not available at GCC build time. 190 ;; 191 nvptx*-*-* | amdgcn*-*-*) 192 # NVPTX does not support Pthreads, has its own code replacement. 193 libgomp_use_pthreads=no 194 # NVPTX is an accelerator-only target 195 libgomp_offloaded_only=yes 196 ;; 197 *) 198 # Check to see if -pthread or -lpthread is needed. Prefer the former. 199 # In case the pthread.h system header is not found, this test will fail. 200 CFLAGS="$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 $LIBS" 208 AC_LINK_IFELSE( 209 [AC_LANG_PROGRAM( 210 [#include <pthread.h> 211 void *g(void *d) { return NULL; }], 212 [pthread_t t; pthread_create(&t,NULL,g,NULL);])], 213 [], 214 [AC_MSG_ERROR([Pthreads are required to build libgomp])])]) 215esac 216 217if test x$libgomp_use_pthreads != xno; then 218 AC_DEFINE(LIBGOMP_USE_PTHREADS, 1, 219 [Define to 1 if libgomp should use POSIX threads.]) 220fi 221 222if test x$libgomp_offloaded_only = xyes; then 223 AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1, 224 [Define to 1 if building libgomp for an accelerator-only target.]) 225fi 226 227if test "x$enable_offload_defaulted" = xyes; then 228 AC_DEFINE(OFFLOAD_DEFAULTED, 1, 229 [Define to 1 to if -foffload is defaulted]) 230fi 231 232AC_CHECK_SIZEOF([void *]) 233 234m4_include([plugin/configfrag.ac]) 235 236# Check for functions needed. 237AC_CHECK_FUNCS(getloadavg clock_gettime strtoull) 238AC_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. 242case "$host" in 243 *-darwin*) 244 AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, 245 Define if the POSIX Semaphores do not work on your system.) 246 ;; 247esac 248 249# RTEMS specific checks 250case "$host" in 251 *-*-rtems*) 252 AC_CHECK_TYPES([struct _Mutex_Control],[],[],[#include <sys/lock.h>]) 253 ;; 254esac 255 256GCC_LINUX_FUTEX(:) 257 258# Check for pthread_{,attr_}[sg]etaffinity_np. 259AC_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. 279if 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.])]) 284fi 285 286# Check for uname. 287AC_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. 300AC_COMPILE_IFELSE( 301 [AC_LANG_PROGRAM( 302 [#include <unistd.h>], 303 [ 304changequote(,)dnl 305 char buf[256]; 306 if (gethostname (buf, sizeof (buf) - 1) == 0) 307 buf[255] = '\0'; 308changequote([,])dnl 309 ])], 310 AC_DEFINE(HAVE_GETHOSTNAME, 1, 311[ Define if gethostname is supported.])) 312 313# Check for getpid. 314AC_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. 322GCC_CHECK_TLS 323 324# See if we have emulated thread-local storage. 325GCC_CHECK_EMUTLS 326 327# See what sort of export controls are available. 328LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY 329LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT 330LIBGOMP_CHECK_ATTRIBUTE_ALIAS 331LIBGOMP_ENABLE_SYMVERS 332 333if test $enable_symvers = gnu; then 334 AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1, 335 [Define to 1 if GNU symbol versioning is used for libgomp.]) 336fi 337 338# Determine cpu count to limit testsuite parallelism. 339AX_COUNT_CPUS 340AC_SUBST(CPU_COUNT) 341 342AC_MSG_NOTICE([checking for flock implementation]) 343AC_CHECK_PROGS(FLOCK, flock) 344# Fallback if 'perl' is available. 345if test -z "$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 $srcdir in 350changequote(,)dnl 351 [\\/$]* | ?:[\\/]*) libgomp_abs_srcdir=${srcdir} ;; 352changequote([,])dnl 353 *) libgomp_abs_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; 354 esac 355 AC_CHECK_PROG(FLOCK, perl, $libgomp_abs_srcdir/testsuite/flock) 356fi 357 358# Get target configury. 359. ${srcdir}/configure.tgt 360CFLAGS="$save_CFLAGS $XCFLAGS" 361 362# Check for __sync_val_compare_and_swap, but only after the target has 363# had a chance to set XCFLAGS. 364LIBGOMP_CHECK_SYNC_BUILTINS 365 366XCFLAGS="$XCFLAGS$XPCFLAGS" 367 368# Add CET specific flags if CET is enabled 369GCC_CET_FLAGS(CET_FLAGS) 370XCFLAGS="$XCFLAGS $CET_FLAGS" 371FCFLAGS="$FCFLAGS $CET_FLAGS" 372 373AC_SUBST(config_path) 374AC_SUBST(XCFLAGS) 375AC_SUBST(XLDFLAGS) 376 377# Conditionalize the makefile for this target machine. 378tmake_file_= 379for f in ${tmake_file} 380do 381 if test -f ${srcdir}/config/$f 382 then 383 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" 384 fi 385done 386tmake_file="${tmake_file_}" 387AC_SUBST(tmake_file) 388 389# Cleanup and exit. 390CFLAGS="$save_CFLAGS" 391AC_CACHE_SAVE 392 393if test ${multilib} = yes; then 394 multilib_arg="--enable-multilib" 395else 396 multilib_arg= 397fi 398 399# Set up the set of libraries that we need to link against for libgomp. 400# Note that the GOMP_SELF_SPEC in gcc.c may force -pthread, 401# which will force linkage against -lpthread (or equivalent for the system). 402# That's not 100% ideal, but about the best we can do easily. 403if test $enable_shared = yes; then 404 link_gomp="-lgomp %{static: $LIBS}" 405else 406 link_gomp="-lgomp $LIBS" 407fi 408AC_SUBST(link_gomp) 409 410AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes]) 411 412# ??? 2006-01-24: Paulo committed to asking autoconf folk to document 413# and export AC_COMPUTE_INT. If that happens, then we'll need to remove 414# the underscore here and update the PREREQ. If it doesn't, then we'll 415# need to copy this macro to our acinclude.m4. 416save_CFLAGS="$CFLAGS" 417for i in $config_path; do 418 if test -f $srcdir/config/$i/omp-lock.h; then 419 CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h" 420 break 421 fi 422done 423 424_AC_COMPUTE_INT([sizeof (__INTPTR_TYPE__)], [INTPTR_T_KIND]) 425_AC_COMPUTE_INT([sizeof (__int128)], [OMP_INT128_SIZE],,[OMP_INT128_SIZE=0]) 426_AC_COMPUTE_INT([2*sizeof (__INTPTR_TYPE__)], [OMP_DEPEND_KIND],, 427 [OMP_DEPEND_KIND=0]) 428_AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],, 429 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])]) 430_AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN]) 431_AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE]) 432_AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN]) 433_AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],, 434 [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])]) 435_AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN]) 436_AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE]) 437_AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN]) 438 439# If the lock fits in an integer, then arrange for Fortran to use that 440# integer. If it doesn't, then arrange for Fortran to use a pointer. 441# Except that we don't have a way at present to multi-lib the installed 442# Fortran modules, so we assume 8 bytes for pointers, regardless of the 443# actual target. 444OMP_LOCK_KIND=$OMP_LOCK_SIZE 445OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE 446if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then 447 OMP_LOCK_KIND=8 448fi 449if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then 450 OMP_NEST_LOCK_KIND=8 451fi 452OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE 453OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE 454if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then 455 OMP_LOCK_25_KIND=8 456fi 457if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then 458 OMP_NEST_LOCK_25_KIND=8 459fi 460if test "$ac_cv_fc_compiler_gnu" = yes; then 461 if test $OMP_DEPEND_KIND -eq 16; then 462 if test $OMP_INT128_SIZE -ne 16; then 463 AC_MSG_ERROR([unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind]) 464 fi 465 else 466 if test $OMP_DEPEND_KIND -ne 8; then 467 AC_MSG_ERROR([unsupported system, cannot find Fortran integer kind for omp_depend_kind]) 468 fi 469 fi 470fi 471 472AC_SUBST(INTPTR_T_KIND) 473AC_SUBST(OMP_LOCK_SIZE) 474AC_SUBST(OMP_LOCK_ALIGN) 475AC_SUBST(OMP_NEST_LOCK_SIZE) 476AC_SUBST(OMP_NEST_LOCK_ALIGN) 477AC_SUBST(OMP_LOCK_KIND) 478AC_SUBST(OMP_NEST_LOCK_KIND) 479AC_SUBST(OMP_LOCK_25_SIZE) 480AC_SUBST(OMP_LOCK_25_ALIGN) 481AC_SUBST(OMP_NEST_LOCK_25_SIZE) 482AC_SUBST(OMP_NEST_LOCK_25_ALIGN) 483AC_SUBST(OMP_LOCK_25_KIND) 484AC_SUBST(OMP_NEST_LOCK_25_KIND) 485AC_SUBST(OMP_DEPEND_KIND) 486CFLAGS="$save_CFLAGS" 487 488# Determine what GCC version number to use in filesystem paths. 489GCC_BASE_VER 490 491AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h) 492AC_CONFIG_FILES(Makefile libgomp.spec) 493AC_OUTPUT 494