4d9da92e60
in generated executables on systems that support it. Use --disable-wrapper-rpath to disable this behavior. See text in README about --disable-wrapper-rpath for more details. This commit was SVN r28479. The following Trac tickets were found above: Ticket 376 --> https://svn.open-mpi.org/trac/ompi/ticket/376
181 строка
5.5 KiB
Bash
181 строка
5.5 KiB
Bash
dnl -*- shell-script -*-
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dnl
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dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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dnl University Research and Technology
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dnl Corporation. All rights reserved.
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dnl Copyright (c) 2004-2005 The University of Tennessee and The University
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dnl of Tennessee Research Foundation. All rights
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dnl reserved.
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dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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dnl University of Stuttgart. All rights reserved.
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dnl Copyright (c) 2004-2005 The Regents of the University of California.
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dnl All rights reserved.
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dnl Copyright (c) 2010-2012 Cisco Systems, Inc. All rights reserved.
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dnl $COPYRIGHT$
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dnl
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dnl Additional copyrights may follow
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dnl
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dnl $HEADER$
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dnl
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AC_DEFUN([OMPI_CHECK_LINKER_FLAGS],[
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#
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# libtool has been created by this point
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# Try to see if it will add any additional flags for dependant libraries
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#
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AC_MSG_CHECKING([for libtool-supplied linker flags])
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libtool="$1"
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extra_flags="$2"
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# Get the directory where libtool lives
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start="`pwd`"
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d="`dirname $libtool`"
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cd "$d"
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libtool="`pwd`/libtool"
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cd "$start"
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unset d start
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# Make a playground to work in
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mkdir conftest.$$
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cd conftest.$$
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cat > foo.c <<EOF
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int foo(void) { return 0; }
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EOF
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ompi_check_linker_flags_work() {
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OPAL_LOG_MSG([$cmd], [yes])
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eval $cmd >&5 2>&5
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if test -n "[$]1"; then
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output=`eval $cmd 2>/dev/null | head -n 1 | sed -e 's,^libtool: *,,' -e 's,^link: *,,'`
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fi
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status="$?"
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OPAL_LOG_MSG([\$? = $status], [yes])
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if test "$status" != "0"; then
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AC_MSG_RESULT([libtool error!])
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AC_MSG_ERROR([Cannot continue])
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fi
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}
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#
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# First make a sample library with the current LDFLAGS and LIBS
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#
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cmd="$libtool --mode=compile --tag=CC $CC $CFLAGS -c -o foo.o foo.c"
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ompi_check_linker_flags_work
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cmd="$libtool --mode=link --tag=CC $CC $CFLAGS foo.lo $LDFLAGS $LIBS -o libfoo.la"
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ompi_check_linker_flags_work
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#
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# Now fake linking to it and capture the output from libtool
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#
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cmd="$libtool --dry-run --mode=link --tag=CC $CC bar.lo libfoo.la -o bar $extra_flags"
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ompi_check_linker_flags_work yes
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# eat any extra whitespace in CC, as libtool will do the same
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tmpCC=`echo $CC | sed -e 's/\//\\\\\//g'`
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output=`echo $output | sed -e "s/^$tmpCC//"`
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extra_ldflags=
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for arg in $output ; do
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case "$arg" in
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*.libs/bar*) ;;
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bar*) ;;
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-I*) ;;
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-L*) ;;
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-R*) ;;
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-lfoo) ;;
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*.libs/libfoo.*) ;;
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-o) ;;
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*.so) ;;
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*.a) ;;
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*)
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extra_ldflags="$extra_ldflags $arg"
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;;
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esac
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shift
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done
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if test -n "$extra_ldflags"; then
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AC_MSG_RESULT([$extra_ldflags])
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else
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AC_MSG_RESULT([no extra flags])
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fi
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#
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# Now do something similar in order to capture the rpath flags: re-run
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# the link, but give the libtool --rpath argument. Then capture the
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# difference between this output and the previous output. Do this
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# separately from the above tests to ensure that we don't accidentally
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# remove -R if it's needed for rpath.
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#
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WRAPPER_RPATH_SUPPORT=disabled
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AS_IF([test "x$enable_wrapper_rpath" = "xyes"],
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[AC_MSG_CHECKING([for libtool-supplied rpath arguments])
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no_rpath_output=$output
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cmd="$libtool --dry-run --mode=link --tag=CC $CC -rpath /ompi-bogus-test-dir bar.lo libfoo.la -o bar $extra_flags"
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ompi_check_linker_flags_work yes
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# eat any extra whitespace in CC, as libtool will do the same
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tmpCC=`echo $CC | sed -e 's/\//\\\\\//g'`
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output=`echo $output | sed -e "s/^$tmpCC//"`
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rpath_args=
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for rp in $output ; do
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found=0
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for nrp in $no_rpath_output ; do
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AS_IF([test "$rp" = "$nrp"], [found=1])
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done
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# If we didn't find it, then it must be an rpath argument.
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# Ensure to replace /ompi-bogus-test-dir with ${libdir} so
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# that the wrapper can do proper replacement, later.
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AS_IF([test "$found" = "0"],
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[rpath_args="$rpath_args `echo $rp | sed -e 's@/ompi-bogus-test-dir@\@{libdir}@'`"])
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done
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# If there were no flags necessary, then we really aren't doing
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# anything to enable rpath, so let's not claim that we are.
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AS_IF([test "`echo $rpath_args`" = ""],
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[rpath_args=
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enable_wrapper_rpath=no
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WRAPPER_RPATH_SUPPORT=unnecessary
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msg="no extra flags"],
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[wrapper_extra_ldflags="$wrapper_extra_ldflags $rpath_args"
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WRAPPER_RPATH_SUPPORT=rpath
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msg=$rpath_args])
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AC_MSG_RESULT([$msg])
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])
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# We don't need to be in the subdir any more
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cd ..
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rm -rf conftest.$$
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AS_IF([test "x$enable_wrapper_rpath" = "xyes"],
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[
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# Now that we have the rpath flags, check to see if the linker
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# supports the DT_RUNPATH flags via --enable-new-dtags (a GNU
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# ld-specific option). These flags are more social than
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# DT_RPATH -- they can be overridden by LD_LIBRARY_PATH (where
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# a regular DT_RPATH cannot).
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AC_MSG_CHECKING([if linker supports RUNPATH (vs. RPATH)])
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LDFLAGS_save=$LDFLAGS
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LDFLAGS="$LDFLAGS $rpath_args -Wl,--enable-new-dtags"
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AC_LANG_PUSH([C])
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AC_LINK_IFELSE([AC_LANG_PROGRAM([], [return 7;])],
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[msg=yes
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WRAPPER_RPATH_SUPPORT=runpath
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wrapper_extra_ldflags="$wrapper_extra_ldflags -Wl,--enable-new-dtags"],
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[msg=no])
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AC_LANG_POP([C])
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LDFLAGS=$LDFLAGS_save
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AC_MSG_RESULT([$msg])
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])
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])dnl
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