2012-05-21 04:12:37 -07:00
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dnl This Source Code Form is subject to the terms of the Mozilla Public
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dnl License, v. 2.0. If a copy of the MPL was not distributed with this
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dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
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2012-03-07 23:56:27 -08:00
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AC_DEFUN([MOZ_EXPAND_LIBS],
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[
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dnl ========================================================
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dnl =
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dnl = Check what kind of list files are supported by the
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dnl = linker
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dnl =
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dnl ========================================================
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AC_CACHE_CHECK(what kind of list files are supported by the linker,
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EXPAND_LIBS_LIST_STYLE,
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[echo "int main() {return 0;}" > conftest.${ac_ext}
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if AC_TRY_COMMAND(${CC-cc} -o conftest.${OBJ_SUFFIX} -c $CFLAGS $CPPFLAGS conftest.${ac_ext} 1>&5) && test -s conftest.${OBJ_SUFFIX}; then
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echo "INPUT(conftest.${OBJ_SUFFIX})" > conftest.list
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if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then
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EXPAND_LIBS_LIST_STYLE=linkerscript
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else
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echo "conftest.${OBJ_SUFFIX}" > conftest.list
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2013-04-16 08:13:50 -07:00
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dnl -filelist is for the OS X linker. We need to try -filelist
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dnl first because clang understands @file, but may pass an
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dnl oversized argument list to the linker depending on the
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dnl contents of @file.
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if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS [-Wl,-filelist,conftest.list] $LIBS 1>&5) && test -s conftest${ac_exeext}; then
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EXPAND_LIBS_LIST_STYLE=filelist
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elif AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS @conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then
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2012-03-07 23:56:27 -08:00
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EXPAND_LIBS_LIST_STYLE=list
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else
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EXPAND_LIBS_LIST_STYLE=none
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fi
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fi
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else
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dnl We really don't expect to get here, but just in case
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AC_ERROR([couldn't compile a simple C file])
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fi
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rm -rf conftest*])
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LIBS_DESC_SUFFIX=desc
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AC_SUBST(LIBS_DESC_SUFFIX)
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AC_SUBST(EXPAND_LIBS_LIST_STYLE)
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if test "$GCC_USE_GNU_LD"; then
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AC_CACHE_CHECK(what kind of ordering can be done with the linker,
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EXPAND_LIBS_ORDER_STYLE,
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[> conftest.order
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_SAVE_LDFLAGS="$LDFLAGS"
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LDFLAGS="${LDFLAGS} -Wl,--section-ordering-file,conftest.order"
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AC_TRY_LINK([], [],
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EXPAND_LIBS_ORDER_STYLE=section-ordering-file,
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EXPAND_LIBS_ORDER_STYLE=)
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LDFLAGS="$_SAVE_LDFLAGS"
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if test -z "$EXPAND_LIBS_ORDER_STYLE"; then
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if AC_TRY_COMMAND(${CC-cc} ${DSO_LDOPTS} ${LDFLAGS} -o ${DLL_PREFIX}conftest${DLL_SUFFIX} -Wl,--verbose 2> /dev/null | sed -n '/^===/,/^===/p' | grep '\.text'); then
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EXPAND_LIBS_ORDER_STYLE=linkerscript
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else
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EXPAND_LIBS_ORDER_STYLE=none
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fi
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rm -f ${DLL_PREFIX}conftest${DLL_SUFFIX}
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fi])
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fi
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AC_SUBST(EXPAND_LIBS_ORDER_STYLE)
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])
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