libgomp/configure.ac

   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 # Add -Wall -Werror if we are using GCC.
 125 if test "x$GCC" = "xyes"; then
 126   XCFLAGS="$XCFLAGS -Wall -Werror"
 127 fi
 128
 129 # Find other programs we need.
 130 AC_CHECK_TOOL(AR, ar)
 131 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
 132 AC_PATH_PROG(PERL, perl, perl-not-found-in-path-error)
 133 AC_PROG_MAKE_SET
 134 AC_PROG_INSTALL
 135
 136 # See if makeinfo has been installed and is modern enough
 137 # that we can use it.
 138 ACX_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]*])
 141 AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes")
 142
 143
 144 # Configure libtool
 145 AM_PROG_LIBTOOL
 146 ACX_LT_HOST_FLAGS
 147 AC_SUBST(enable_shared)
 148 AC_SUBST(enable_static)
 149
 150 AM_MAINTAINER_MODE
 151
 152 # Create a spec file, so that compile/link tests don't fail
 153 test -f libgfortran.spec || touch libgfortran.spec
 154 FCFLAGS="$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)
 159 case `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="$GFORTRAN"
 166     else
 167       FC=no
 168     fi ;;
 169 esac
 170 AC_PROG_FC(gfortran)
 171 FCFLAGS="$FCFLAGS -Wall -L../libgfortran"
 172
 173 # For libtool versioning info, format is CURRENT:REVISION:AGE
 174 libtool_VERSION=1:0:0
 175 AC_SUBST(libtool_VERSION)
 176
 177 # Check header files.
 178 AC_STDC_HEADERS
 179 AC_HEADER_TIME
 180 ACX_HEADER_STRING
 181 AC_CHECK_HEADERS(pthread.h unistd.h semaphore.h sys/loadavg.h sys/sysctl.h sys/time.h)
 182
 183 XPCFLAGS=""
 184 case "$host" in
 185   *-*-rtems*)
 186     # RTEMS supports Pthreads, but the library is not available at GCC build time.
 187     ;;
 188   nvptx*-*-* | amdgcn*-*-*)
 189     # NVPTX does not support Pthreads, has its own code replacement.
 190     libgomp_use_pthreads=no
 191     # NVPTX is an accelerator-only target
 192     libgomp_offloaded_only=yes
 193     ;;
 194   *)
 195     # Check to see if -pthread or -lpthread is needed.  Prefer the former.
 196     # In case the pthread.h system header is not found, this test will fail.
 197     CFLAGS="$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 $LIBS"
 205       AC_LINK_IFELSE(
 206        [AC_LANG_PROGRAM(
 207         [#include <pthread.h>
 208          void *g(void *d) { return NULL; }],
 209         [pthread_t t; pthread_create(&t,NULL,g,NULL);])],
 210        [],
 211        [AC_MSG_ERROR([Pthreads are required to build libgomp])])])
 212 esac
 213
 214 if test x$libgomp_use_pthreads != xno; then
 215   AC_DEFINE(LIBGOMP_USE_PTHREADS, 1,
 216             [Define to 1 if libgomp should use POSIX threads.])
 217 fi
 218
 219 if test x$libgomp_offloaded_only = xyes; then
 220   AC_DEFINE(LIBGOMP_OFFLOADED_ONLY, 1,
 221             [Define to 1 if building libgomp for an accelerator-only target.])
 222 fi
 223
 224 if test "x$enable_offload_defaulted" = xyes; then
 225   AC_DEFINE(OFFLOAD_DEFAULTED, 1,
 226     [Define to 1 to if -foffload is defaulted])
 227 fi
 228
 229 AC_CHECK_SIZEOF([void *])
 230
 231 m4_include([plugin/configfrag.ac])
 232
 233 # Check for functions needed.
 234 AC_CHECK_FUNCS(getloadavg clock_gettime strtoull)
 235 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
 236
 237 # Check for broken semaphore implementation on darwin.
 238 # sem_init returns: sem_init error: Function not implemented.
 239 case "$host" in
 240   *-darwin*)
 241     AC_DEFINE(HAVE_BROKEN_POSIX_SEMAPHORES, 1,
 242         Define if the POSIX Semaphores do not work on your system.)
 243     ;;
 244 esac
 245
 246 # RTEMS specific checks
 247 case "$host" in
 248   *-*-rtems*)
 249     AC_CHECK_TYPES([struct _Mutex_Control],[],[],[#include <sys/lock.h>])
 250     ;;
 251 esac
 252
 253 GCC_LINUX_FUTEX(:)
 254
 255 # Check for pthread_{,attr_}[sg]etaffinity_np.
 256 AC_LINK_IFELSE(
 257  [AC_LANG_PROGRAM(
 258   [#define _GNU_SOURCE
 259    #include <pthread.h>],
 260   [cpu_set_t cpuset;
 261    pthread_attr_t attr;
 262    pthread_getaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
 263    if (CPU_ISSET (0, &cpuset))
 264      CPU_SET (1, &cpuset);
 265    else
 266      CPU_ZERO (&cpuset);
 267    pthread_setaffinity_np (pthread_self (), sizeof (cpu_set_t), &cpuset);
 268    pthread_attr_init (&attr);
 269    pthread_attr_getaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);
 270    pthread_attr_setaffinity_np (&attr, sizeof (cpu_set_t), &cpuset);])],
 271   AC_DEFINE(HAVE_PTHREAD_AFFINITY_NP, 1,
 272 [       Define if pthread_{,attr_}{g,s}etaffinity_np is supported.]))
 273
 274 # At least for glibc, clock_gettime is in librt.  But don't pull that
 275 # in if it still doesn't give us the function we want.
 276 if test $ac_cv_func_clock_gettime = no; then
 277   AC_CHECK_LIB(rt, clock_gettime,
 278     [LIBS="-lrt $LIBS"
 279      AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
 280                [Define to 1 if you have the `clock_gettime' function.])])
 281 fi
 282
 283 # Check for uname.
 284 AC_COMPILE_IFELSE(
 285  [AC_LANG_PROGRAM(
 286   [#include <string.h>
 287    #include <stdlib.h>
 288    #include <sys/utsname.h>],
 289   [struct utsname buf;
 290    volatile size_t len = 0;
 291    if (!uname (buf))
 292      len = strlen (buf.nodename);])],
 293   AC_DEFINE(HAVE_UNAME, 1,
 294 [       Define if uname is supported and struct utsname has nodename field.]))
 295
 296 # Check for gethostname.
 297 AC_COMPILE_IFELSE(
 298  [AC_LANG_PROGRAM(
 299   [#include <unistd.h>],
 300   [
 301 changequote(,)dnl
 302    char buf[256];
 303    if (gethostname (buf, sizeof (buf) - 1) == 0)
 304      buf[255] = '\0';
 305 changequote([,])dnl
 306   ])],
 307   AC_DEFINE(HAVE_GETHOSTNAME, 1,
 308 [       Define if gethostname is supported.]))
 309
 310 # Check for getpid.
 311 AC_COMPILE_IFELSE(
 312  [AC_LANG_PROGRAM(
 313   [#include <unistd.h>],
 314   [int pid = getpid ();])],
 315   AC_DEFINE(HAVE_GETPID, 1,
 316 [       Define if getpid is supported.]))
 317
 318 # See if we support thread-local storage.
 319 GCC_CHECK_TLS
 320
 321 # See if we have emulated thread-local storage.
 322 GCC_CHECK_EMUTLS
 323
 324 # See what sort of export controls are available.
 325 LIBGOMP_CHECK_ATTRIBUTE_VISIBILITY
 326 LIBGOMP_CHECK_ATTRIBUTE_DLLEXPORT
 327 LIBGOMP_CHECK_ATTRIBUTE_ALIAS
 328 LIBGOMP_ENABLE_SYMVERS
 329
 330 if test $enable_symvers = gnu; then
 331   AC_DEFINE(LIBGOMP_GNU_SYMBOL_VERSIONING, 1,
 332             [Define to 1 if GNU symbol versioning is used for libgomp.])
 333 fi
 334
 335 # Determine cpu count to limit testsuite parallelism.
 336 AX_COUNT_CPUS
 337 AC_SUBST(CPU_COUNT)
 338
 339 # Get target configury.
 340 . ${srcdir}/configure.tgt
 341 CFLAGS="$save_CFLAGS $XCFLAGS"
 342
 343 # Check for __sync_val_compare_and_swap, but only after the target has
 344 # had a chance to set XCFLAGS.
 345 LIBGOMP_CHECK_SYNC_BUILTINS
 346
 347 XCFLAGS="$XCFLAGS$XPCFLAGS"
 348
 349 # Add CET specific flags if CET is enabled
 350 GCC_CET_FLAGS(CET_FLAGS)
 351 XCFLAGS="$XCFLAGS $CET_FLAGS"
 352 FCFLAGS="$FCFLAGS $CET_FLAGS"
 353
 354 AC_SUBST(config_path)
 355 AC_SUBST(XCFLAGS)
 356 AC_SUBST(XLDFLAGS)
 357
 358 # Conditionalize the makefile for this target machine.
 359 tmake_file_=
 360 for f in ${tmake_file}
 361 do
 362         if test -f ${srcdir}/config/$f
 363         then
 364                 tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
 365         fi
 366 done
 367 tmake_file="${tmake_file_}"
 368 AC_SUBST(tmake_file)
 369
 370 # Cleanup and exit.
 371 CFLAGS="$save_CFLAGS"
 372 AC_CACHE_SAVE
 373
 374 if test ${multilib} = yes; then
 375   multilib_arg="--enable-multilib"
 376 else
 377   multilib_arg=
 378 fi
 379
 380 # Set up the set of libraries that we need to link against for libgomp.
 381 # Note that the GOMP_SELF_SPEC in gcc.c may force -pthread,
 382 # which will force linkage against -lpthread (or equivalent for the system).
 383 # That's not 100% ideal, but about the best we can do easily.
 384 if test $enable_shared = yes; then
 385   link_gomp="-lgomp %{static: $LIBS}"
 386 else
 387   link_gomp="-lgomp $LIBS"
 388 fi
 389 AC_SUBST(link_gomp)
 390
 391 AM_CONDITIONAL([USE_FORTRAN], [test "$ac_cv_fc_compiler_gnu" = yes])
 392
 393 # ??? 2006-01-24: Paulo committed to asking autoconf folk to document
 394 # and export AC_COMPUTE_INT.  If that happens, then we'll need to remove
 395 # the underscore here and update the PREREQ.  If it doesn't, then we'll
 396 # need to copy this macro to our acinclude.m4.
 397 save_CFLAGS="$CFLAGS"
 398 for i in $config_path; do
 399   if test -f $srcdir/config/$i/omp-lock.h; then
 400     CFLAGS="$CFLAGS -include confdefs.h -include $srcdir/config/$i/omp-lock.h"
 401     break
 402   fi
 403 done
 404
 405 _AC_COMPUTE_INT([sizeof (__INTPTR_TYPE__)], [INTPTR_T_KIND])
 406 _AC_COMPUTE_INT([sizeof (__int128)], [OMP_INT128_SIZE],,[OMP_INT128_SIZE=0])
 407 _AC_COMPUTE_INT([2*sizeof (__INTPTR_TYPE__)], [OMP_DEPEND_KIND],,
 408                 [OMP_DEPEND_KIND=0])
 409 _AC_COMPUTE_INT([sizeof (omp_lock_t)], [OMP_LOCK_SIZE],,
 410   [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_t)])])
 411 _AC_COMPUTE_INT([__alignof (omp_lock_t)], [OMP_LOCK_ALIGN])
 412 _AC_COMPUTE_INT([sizeof (omp_nest_lock_t)], [OMP_NEST_LOCK_SIZE])
 413 _AC_COMPUTE_INT([__alignof (omp_nest_lock_t)], [OMP_NEST_LOCK_ALIGN])
 414 _AC_COMPUTE_INT([sizeof (omp_lock_25_t)], [OMP_LOCK_25_SIZE],,
 415   [AC_MSG_ERROR([unsupported system, cannot find sizeof (omp_lock_25_t)])])
 416 _AC_COMPUTE_INT([__alignof (omp_lock_25_t)], [OMP_LOCK_25_ALIGN])
 417 _AC_COMPUTE_INT([sizeof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_SIZE])
 418 _AC_COMPUTE_INT([__alignof (omp_nest_lock_25_t)], [OMP_NEST_LOCK_25_ALIGN])
 419
 420 # If the lock fits in an integer, then arrange for Fortran to use that
 421 # integer.  If it doesn't, then arrange for Fortran to use a pointer.
 422 # Except that we don't have a way at present to multi-lib the installed
 423 # Fortran modules, so we assume 8 bytes for pointers, regardless of the
 424 # actual target.
 425 OMP_LOCK_KIND=$OMP_LOCK_SIZE
 426 OMP_NEST_LOCK_KIND=$OMP_NEST_LOCK_SIZE
 427 if test $OMP_LOCK_SIZE -gt 8 || test $OMP_LOCK_ALIGN -gt $OMP_LOCK_SIZE; then
 428   OMP_LOCK_KIND=8
 429 fi
 430 if test $OMP_NEST_LOCK_SIZE -gt 8 || test $OMP_NEST_LOCK_ALIGN -gt $OMP_NEST_LOCK_SIZE; then
 431   OMP_NEST_LOCK_KIND=8
 432 fi
 433 OMP_LOCK_25_KIND=$OMP_LOCK_25_SIZE
 434 OMP_NEST_LOCK_25_KIND=$OMP_NEST_LOCK_25_SIZE
 435 if test $OMP_LOCK_25_SIZE -gt 8 || test $OMP_LOCK_25_ALIGN -gt $OMP_LOCK_25_SIZE; then
 436   OMP_LOCK_25_KIND=8
 437 fi
 438 if test $OMP_NEST_LOCK_25_SIZE -gt 8 || test $OMP_NEST_LOCK_25_ALIGN -gt $OMP_NEST_LOCK_25_SIZE; then
 439   OMP_NEST_LOCK_25_KIND=8
 440 fi
 441 if test "$ac_cv_fc_compiler_gnu" = yes; then
 442   if test $OMP_DEPEND_KIND -eq 16; then
 443     if test $OMP_INT128_SIZE -ne 16; then
 444       AC_MSG_ERROR([unsupported system, cannot find Fortran int kind=16, needed for omp_depend_kind])
 445     fi
 446   else
 447     if test $OMP_DEPEND_KIND -ne 8; then
 448       AC_MSG_ERROR([unsupported system, cannot find Fortran integer kind for omp_depend_kind])
 449     fi
 450   fi
 451 fi
 452
 453 AC_SUBST(INTPTR_T_KIND)
 454 AC_SUBST(OMP_LOCK_SIZE)
 455 AC_SUBST(OMP_LOCK_ALIGN)
 456 AC_SUBST(OMP_NEST_LOCK_SIZE)
 457 AC_SUBST(OMP_NEST_LOCK_ALIGN)
 458 AC_SUBST(OMP_LOCK_KIND)
 459 AC_SUBST(OMP_NEST_LOCK_KIND)
 460 AC_SUBST(OMP_LOCK_25_SIZE)
 461 AC_SUBST(OMP_LOCK_25_ALIGN)
 462 AC_SUBST(OMP_NEST_LOCK_25_SIZE)
 463 AC_SUBST(OMP_NEST_LOCK_25_ALIGN)
 464 AC_SUBST(OMP_LOCK_25_KIND)
 465 AC_SUBST(OMP_NEST_LOCK_25_KIND)
 466 AC_SUBST(OMP_DEPEND_KIND)
 467 CFLAGS="$save_CFLAGS"
 468
 469 # Determine what GCC version number to use in filesystem paths.
 470 GCC_BASE_VER
 471
 472 AC_CONFIG_FILES(omp.h omp_lib.h omp_lib.f90 libgomp_f.h)
 473 AC_CONFIG_FILES(Makefile testsuite/Makefile libgomp.spec)
 474 AC_CONFIG_FILES([testsuite/libgomp-test-support.pt.exp:testsuite/libgomp-test-support.exp.in])
 475 AC_CONFIG_FILES([testsuite/libgomp-site-extra.exp])
 476 AC_OUTPUT