1 # Process this file with autoconf to produce a configure script, like so: 2 # aclocal -I ../config && autoconf && autoheader && automake 3 4 AC_INIT([GNU Offloading and Multi Processing Runtime Library], 1.0,,[libgomp]) 5 AC_CONFIG_HEADER(config.h) 6 7 # ------- 8 # Options 9 # ------- 10 11 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 12 LIBGOMP_ENABLE(version-specific-runtime-libs, no, , 13 [Specify that runtime libraries should be installed in a compiler-specific directory], 14 permit yes|no) 15 AC_MSG_RESULT($enable_version_specific_runtime_libs) 16 17 # We would like our source tree to be readonly. However when releases or 18 # pre-releases are generated, the flex/bison generated files as well as the 19 # various formats of manuals need to be included along with the rest of the 20 # sources. Therefore we have --enable-generated-files-in-srcdir to do 21 # just that. 22 AC_MSG_CHECKING([for --enable-generated-files-in-srcdir]) 23 LIBGOMP_ENABLE(generated-files-in-srcdir, no, , 24 [put copies of generated files in source dir intended for creating source 25 tarballs for users without texinfo bison or flex.], 26 permit yes|no) 27 AC_MSG_RESULT($enable_generated_files_in_srcdir) 28 AM_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 $with_cross_host. 46 # 47 # Do not delete or change the following two lines. For why, see 48 # http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 49 AC_CANONICAL_SYSTEM 50 target_alias=${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. 64 AM_INIT_AUTOMAKE([1.9.0 foreign no-dist -Wall -Wno-portability -Wno-override]) 65 AM_ENABLE_MULTILIB(, ..) 66 67 GCC_WITH_TOOLEXECLIBDIR 68 69 # Calculate toolexeclibdir 70 # Also toolexecdir, though it's only used in toolexeclibdir 71 case ${enable_version_specific_runtime_libs} in 72 yes) 73 # Need the gcc compiler version to know where to install libraries 74 # and header files if --enable-version-specific-runtime-libs option 75 # is selected. 76 toolexecdir='$(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/$multi_os_directory ;; 100 esac 101 ;; 102 esac 103 AC_SUBST(toolexecdir) 104 AC_SUBST(toolexeclibdir) 105 106 # Check the compiler. 107 # The same as in boehm-gc and libstdc++. Have to borrow it from there. 108 # We must force CC to /not/ be precious variables; otherwise 109 # the wrong, non-multilib-adjusted value will be used in multilibs. 110 # As a side effect, we have to subst CFLAGS ourselves. 111 112 m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS]) 113 m4_define([_AC_ARG_VAR_PRECIOUS],[]) 114 AC_PROG_CC 115 m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS]) 116 117 AC_SUBST(CFLAGS) 118 119 # In order to override CFLAGS_FOR_TARGET, all of our special flags go 120 # in XCFLAGS. But we need them in CFLAGS during configury. So put them 121 # in both places for now and restore CFLAGS at the end of config. 122 save_CFLAGS="$CFLAGS" 123 124 AC_ARG_ENABLE([werror], 125 [AS_HELP_STRING([--disable-werror], [disable building with -Werror])]) 126 # Add -Wall -Werror if we are using GCC. 127 AS_IF([test "x$GCC" = "xyes"], 128 [XCFLAGS="$XCFLAGS -Wall"]) 129 AS_IF([test "x$enable_werror" != "xno" && test "x$GCC" = "xyes"], 130 [XCFLAGS="$XCFLAGS -Werror"]) 131 132 # Find other programs we need. 133 AC_CHECK_TOOL(AR, ar) 134 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 135 AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error) 136 AC_PROG_MAKE_SET 137 AC_PROG_INSTALL 138 139 # See if makeinfo has been installed and is modern enough 140 # that we can use it. 141 ACX_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]*]) 144 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 145 146 147 # Configure libtool 148 AM_PROG_LIBTOOL 149 ACX_LT_HOST_FLAGS 150 AC_SUBST(enable_shared) 151 AC_SUBST(enable_static) 152 153 AM_MAINTAINER_MODE 154 155 # Create a spec file, so that compile/link tests don't fail 156 test -f libgfortran.spec || touch libgfortran.spec 157 FCFLAGS="$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) 162 case `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="$GFORTRAN" 169 else 170 FC=no 171 fi ;; 172 esac 173 AC_PROG_FC(gfortran) 174 FCFLAGS="$FCFLAGS -Wall -L../libgfortran" 175 176 # For libtool versioning info, format is CURRENT:REVISION:AGE 177 libtool_VERSION=1:0:0 178 AC_SUBST(libtool_VERSION) 179 180 # Check header files. 181 AC_STDC_HEADERS 182 AC_HEADER_TIME 183 ACX_HEADER_STRING 184 AC_CHECK_HEADERS(pthread.h unistd.h semaphore.h sys/loadavg.h sys/sysctl.h sys/time.h) 185 186 XPCFLAGS="" 187 case "$host" in 188 *-*-rtems*) 189 # RTEMS supports Pthreads, but the library is not available at GCC build time. 190 ;; 191 nvptx*-*-* | amdgcn*-*-*) 192 # NVPTX does not support Pthreads, has its own code replacement. 193 libgomp_use_pthreads=no 194 # NVPTX is an accelerator-only target 195 libgomp_offloaded_only=yes 196 ;; 197 *) 198 # Check to see if -pthread or -lpthread is needed. Prefer the former. 199 # In case the pthread.h system header is not found, this test will fail. 200 CFLAGS="$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 $LIBS" 208 AC_LINK_IFELSE( 209 [AC_LANG_PROGRAM( 210 [#include <pthread.h> 211 void *g(void *d) { return NULL; }], 212 [pthread_t t; pthread_create(&t,NULL,g,NULL);])], 213 [], 214 [AC_MSG_ERROR([Pthreads are required to build libgomp])])]) 215 esac 216 217 if test x$libgomp_use_pthreads != xno; then 218 AC_DEFINE(LIBGOMP_USE_PTHREADS, 1, 219 [Define to 1 if libgomp should use POSIX threads.]) 220 fi 221 222 if test x$libgomp_offloaded_only = xyes; then 223 AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1, 224 [Define to 1 if building libgomp for an accelerator-only target.]) 225 fi 226 227 if test "x$enable_offload_defaulted" = xyes; then 228 AC_DEFINE(OFFLOAD_DEFAULTED, 1, 229 [Define to 1 to if -foffload is defaulted]) 230 fi 231 232 AC_CHECK_SIZEOF([void *]) 233 234 m4_include([plugin/configfrag.ac]) 235 236 # Check for functions needed. 237 AC_CHECK_FUNCS(getloadavg clock_gettime strtoull) 238 AC_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. 242 case "$host" in 243 *-darwin*) 244 AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1, 245 Define if the POSIX Semaphores do not work on your system.) 246 ;; 247 esac 248 249 # RTEMS specific checks 250 case "$host" in 251 *-*-rtems*) 252 AC_CHECK_TYPES([struct _Mutex_Control],[],[],[#include <sys/lock.h>]) 253 ;; 254 esac 255 256 GCC_LINUX_FUTEX(:) 257 258 # Check for pthread_{,attr_}[sg]etaffinity_np. 259 AC_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. 279 if 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.])]) 284 fi 285 286 # Check for uname. 287 AC_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. 300 AC_COMPILE_IFELSE( 301 [AC_LANG_PROGRAM( 302 [#include <unistd.h>], 303 [ 304 changequote(,)dnl 305 char buf[256]; 306 if (gethostname (buf, sizeof (buf) - 1) == 0) 307 buf[255] = '\0'; 308 changequote([,])dnl 309 ])], 310 AC_DEFINE(HAVE_GETHOSTNAME, 1, 311 [ Define if gethostname is supported.])) 312 313 # Check for getpid. 314 AC_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. 322 GCC_CHECK_TLS 323 324 # See if we have emulated thread-local storage. 325 GCC_CHECK_EMUTLS 326 327 # See what sort of export controls are available. 328 LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY 329 LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT 330 LIBGOMP_CHECK_ATTRIBUTE_ALIAS 331 LIBGOMP_ENABLE_SYMVERS 332 333 if test $enable_symvers = gnu; then 334 AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1, 335 [Define to 1 if GNU symbol versioning is used for libgomp.]) 336 fi 337 338 # Determine cpu count to limit testsuite parallelism. 339 AX_COUNT_CPUS 340 AC_SUBST(CPU_COUNT) 341 342 AC_MSG_NOTICE([checking for flock implementation]) 343 AC_CHECK_PROGS(FLOCK, flock) 344 # Fallback if 'perl' is available. 345 if test -z "$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 $srcdir in 350 changequote(,)dnl 351 [\\/$]* | ?:[\\/]*) libgomp_abs_srcdir=${srcdir} ;; 352 changequote([,])dnl 353 *) libgomp_abs_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; 354 esac 355 AC_CHECK_PROG(FLOCK, perl, $libgomp_abs_srcdir/testsuite/flock) 356 fi 357 358 # Get target configury. 359 . ${srcdir}/configure.tgt 360 CFLAGS="$save_CFLAGS $XCFLAGS" 361 362 # Check for __sync_val_compare_and_swap, but only after the target has 363 # had a chance to set XCFLAGS. 364 LIBGOMP_CHECK_SYNC_BUILTINS 365 366 XCFLAGS="$XCFLAGS$XPCFLAGS" 367 368 # Add CET specific flags if CET is enabled 369 GCC_CET_FLAGS(CET_FLAGS) 370 XCFLAGS="$XCFLAGS $CET_FLAGS" 371 FCFLAGS="$FCFLAGS $CET_FLAGS" 372 373 AC_SUBST(config_path) 374 AC_SUBST(XCFLAGS) 375 AC_SUBST(XLDFLAGS) 376 377 # Conditionalize the makefile for this target machine. 378 tmake_file_= 379 for f in ${tmake_file} 380 do 381 if test -f ${srcdir}/config/$f 382 then 383 tmake_file_="${tmake_file_} \$(srcdir)/config/$f" 384 fi 385 done 386 tmake_file="${tmake_file_}" 387 AC_SUBST(tmake_file) 388 389 # Cleanup and exit. 390 CFLAGS="$save_CFLAGS" 391 AC_CACHE_SAVE 392 393 if test ${multilib} = yes; then 394 multilib_arg="--enable-multilib" 395 else 396 multilib_arg= 397 fi 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. 403 if test $enable_shared = yes; then 404 link_gomp="-lgomp %{static: $LIBS}" 405 else 406 link_gomp="-lgomp $LIBS" 407 fi 408 AC_SUBST(link_gomp) 409 410 AM_CONDITIONAL([USE_FORTRAN], [test "$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. 416 save_CFLAGS="$CFLAGS" 417 for 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 422 done 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. 444 OMP_LOCK_KIND=$OMP_LOCK_SIZE 445 OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE 446 if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then 447 OMP_LOCK_KIND=8 448 fi 449 if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then 450 OMP_NEST_LOCK_KIND=8 451 fi 452 OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE 453 OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE 454 if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then 455 OMP_LOCK_25_KIND=8 456 fi 457 if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then 458 OMP_NEST_LOCK_25_KIND=8 459 fi 460 if test "$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 $OMP_DEPEND_KIND -ne 8; then 467 AC_MSG_ERROR([unsupported system, cannot find Fortran integer kind for omp_depend_kind]) 468 fi 469 fi 470 fi 471 472 AC_SUBST(INTPTR_T_KIND) 473 AC_SUBST(OMP_LOCK_SIZE) 474 AC_SUBST(OMP_LOCK_ALIGN) 475 AC_SUBST(OMP_NEST_LOCK_SIZE) 476 AC_SUBST(OMP_NEST_LOCK_ALIGN) 477 AC_SUBST(OMP_LOCK_KIND) 478 AC_SUBST(OMP_NEST_LOCK_KIND) 479 AC_SUBST(OMP_LOCK_25_SIZE) 480 AC_SUBST(OMP_LOCK_25_ALIGN) 481 AC_SUBST(OMP_NEST_LOCK_25_SIZE) 482 AC_SUBST(OMP_NEST_LOCK_25_ALIGN) 483 AC_SUBST(OMP_LOCK_25_KIND) 484 AC_SUBST(OMP_NEST_LOCK_25_KIND) 485 AC_SUBST(OMP_DEPEND_KIND) 486 CFLAGS="$save_CFLAGS" 487 488 # Determine what GCC version number to use in filesystem paths. 489 GCC_BASE_VER 490 491 AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h) 492 AC_CONFIG_FILES(Makefile libgomp.spec) 493 AC_OUTPUT 494
Indexes created Mon Mar 02 05:31:46 UTC 2026