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