diff options
Diffstat (limited to 'hwloc-1.2.1/config/hwloc_check_visibility.m4')
| -rw-r--r-- | hwloc-1.2.1/config/hwloc_check_visibility.m4 | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/hwloc-1.2.1/config/hwloc_check_visibility.m4 b/hwloc-1.2.1/config/hwloc_check_visibility.m4 new file mode 100644 index 00000000..151c0f8f --- /dev/null +++ b/hwloc-1.2.1/config/hwloc_check_visibility.m4 @@ -0,0 +1,122 @@ +# This macro set originally copied from Open MPI: +# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana +# University Research and Technology +# Corporation. All rights reserved. +# Copyright (c) 2004-2005 The University of Tennessee and The University +# of Tennessee Research Foundation. All rights +# reserved. +# Copyright (c) 2004-2007 High Performance Computing Center Stuttgart, +# University of Stuttgart. All rights reserved. +# Copyright (c) 2004-2005 The Regents of the University of California. +# All rights reserved. +# Copyright (c) 2006-2007 Cisco Systems, Inc. All rights reserved. +# and renamed for hwloc: +# Copyright (c) 2009 INRIA. All rights reserved. +# Copyright (c) 2009-2010 Université Bordeaux 1 +# Copyright (c) 2010 Cisco Systems, Inc. All rights reserved. +# See COPYING in top-level directory. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: +# +# - Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# +# - Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer listed +# in this license in the documentation and/or other materials +# provided with the distribution. +# +# - Neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# The copyright holders provide no reassurances that the source code +# provided does not infringe any patent, copyright, or any other +# intellectual property rights of third parties. The copyright holders +# disclaim any liability to any recipient for claims brought against +# recipient by any third party for infringement of that parties +# intellectual property rights. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# + +# _HWLOC_CHECK_VISIBILITY +# -------------------------------------------------------- +AC_DEFUN([_HWLOC_CHECK_VISIBILITY],[ + # Be safe for systems that have ancient Autoconf's (e.g., RHEL5) + m4_ifdef([AC_PROG_GREP], + [AC_REQUIRE([AC_PROG_GREP])], + [GREP=grep]) + + msg="whether to enable visibility" + # Check if the compiler has support for visibility, like some + # versions of gcc, icc. + AC_ARG_ENABLE(visibility, + AC_HELP_STRING([--enable-visibility], + [enable visibility feature of certain compilers/linkers (default: enabled)])) + + case ${target} in + *-*-aix*|*-*-mingw*|*-*-cygwin*|*-*-hpux*) + enable_visibility=no + ;; + esac + + if test "$enable_visibility" = "no"; then + AC_MSG_CHECKING([$msg]) + AC_MSG_RESULT([no (disabled)]) + have_visibility=0 + else + CFLAGS_orig="$CFLAGS" + CFLAGS="$CFLAGS_orig -fvisibility=hidden" + hwloc_add= + AC_CACHE_CHECK([if $CC supports -fvisibility], + [hwloc_cv_cc_fvisibility], + [AC_LINK_IFELSE([AC_LANG_PROGRAM([[ + __attribute__((visibility("default"))) int foo; + ]],[[int i;]])], + [hwloc_cv_cc_fvisibility=yes], + [if test -s conftest.err ; then + $GREP -iq "visibility" conftest.err + if test "$?" = "0" ; then + hwloc_cv_cc_fvisibility=no + else + hwloc_cv_cc_fvisibility=yes + fi + else + hwloc_cv_cc_fvisibility=yes + fi], + [hwloc_cv_cc_fvisibility=no]) + ]) + + if test "$hwloc_cv_cc_fvisibility" = "yes" ; then + hwloc_add=" -fvisibility=hidden" + have_visibility=1 + AC_MSG_CHECKING([$msg]) + AC_MSG_RESULT([yes (via$hwloc_add)]) + elif test "$enable_visibility" = "yes"; then + AC_MSG_ERROR([Symbol visibility support requested but compiler does not seem to support it. Aborting]) + else + AC_MSG_CHECKING([$msg]) + AC_MSG_RESULT([no (unsupported)]) + have_visibility=0 + fi + CFLAGS=$CFLAGS_orig + HWLOC_VISIBILITY_CFLAGS=$hwloc_add + unset hwloc_add + fi + + AC_DEFINE_UNQUOTED([HWLOC_C_HAVE_VISIBILITY], [$have_visibility], + [Whether C compiler supports -fvisibility]) +]) |