d33801c0fa
svn merge -r 19823:19821 https://svn.open-mpi.org/svn/ompi/trunk ./ I copied the config directory in another location, and the original .svn directory was replaced by the Open MPI one ... As a result my first commit, applied the changes on the Open MPI trunk instead of the other project. This commit was SVN r19824.
79 строки
3.0 KiB
Bash
79 строки
3.0 KiB
Bash
# -*- shell-script -*-
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#
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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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# $COPYRIGHT$
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#
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# Additional copyrights may follow
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#
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# $HEADER$
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#
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# OMPI_CHECK_VISIBILITY
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# --------------------------------------------------------
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AC_DEFUN([OMPI_CHECK_VISIBILITY],[
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AC_REQUIRE([AC_PROG_GREP])
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# Check if the compiler has support for visibility, like some 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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if test "$enable_visibility" = "no"; then
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AC_MSG_CHECKING([enable symbol visibility])
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AC_MSG_RESULT([no])
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have_visibility=0
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else
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CFLAGS_orig="$CFLAGS"
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CFLAGS="$CFLAGS_orig -fvisibility=hidden"
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add=
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AC_CACHE_CHECK([if $CC supports -fvisibility],
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[ompi_cv_cc_fvisibility],
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[AC_TRY_LINK([
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#include <stdio.h>
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__attribute__((visibility("default"))) int foo;
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void bar(void) { fprintf(stderr, "bar\n"); };
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],[],
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[if test -s conftest.err ; then
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$GREP -iq "visibility" conftest.err
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if test "$?" = "0" ; then
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ompi_cv_cc_fvisibility="no"
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else
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ompi_cv_cc_fvisibility="yes"
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fi
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else
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ompi_cv_cc_fvisibility="yes"
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fi],
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[ompi_cv_cc_fvisibility="no"])
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])
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if test "$ompi_cv_cc_fvisibility" = "yes" ; then
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add=" -fvisibility=hidden"
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have_visibility=1
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AC_MSG_CHECKING([enable symbol visibility])
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AC_MSG_RESULT([yes])
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AC_MSG_WARN([$add has been added to CFLAGS])
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elif test "$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([enable symbol visibility])
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AC_MSG_RESULT([no])
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have_visibility=0
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fi
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CFLAGS="$CFLAGS_orig$add"
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unset add
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fi
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AC_DEFINE_UNQUOTED([OMPI_C_HAVE_VISIBILITY], [$have_visibility],
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[Whether C compiler supports -fvisibility])
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])
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