1 dnl This Source Code Form is subject to the terms of the Mozilla Public
2 dnl License, v. 2.0. If a copy of the MPL was not distributed with this
3 dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
5 AC_DEFUN([MOZ_EXPAND_LIBS],
7 dnl ========================================================
9 dnl = Check what kind of list files are supported by the
12 dnl ========================================================
14 AC_CACHE_CHECK(what kind of list files are supported by the linker,
15 EXPAND_LIBS_LIST_STYLE,
16 [echo "int main() {return 0;}" > conftest.${ac_ext}
17 if AC_TRY_COMMAND(${CC-cc} -o conftest.${OBJ_SUFFIX} -c $CFLAGS $CPPFLAGS conftest.${ac_ext} 1>&5) && test -s conftest.${OBJ_SUFFIX}; then
18 echo "INPUT(conftest.${OBJ_SUFFIX})" > conftest.list
19 if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then
20 EXPAND_LIBS_LIST_STYLE=linkerscript
22 echo "conftest.${OBJ_SUFFIX}" > conftest.list
23 dnl -filelist is for the OS X linker. We need to try -filelist
24 dnl first because clang understands @file, but may pass an
25 dnl oversized argument list to the linker depending on the
26 dnl contents of @file.
27 if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS [-Wl,-filelist,conftest.list] $LIBS 1>&5) && test -s conftest${ac_exeext}; then
28 EXPAND_LIBS_LIST_STYLE=filelist
29 elif AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS @conftest.list $LIBS 1>&5) && test -s conftest${ac_exeext}; then
30 EXPAND_LIBS_LIST_STYLE=list
32 EXPAND_LIBS_LIST_STYLE=none
36 dnl We really don't expect to get here, but just in case
37 AC_ERROR([couldn't compile a simple C file])
42 AC_SUBST(LIBS_DESC_SUFFIX)
43 AC_SUBST(EXPAND_LIBS_LIST_STYLE)
45 if test "$GCC_USE_GNU_LD"; then
46 AC_CACHE_CHECK(what kind of ordering can be done with the linker,
47 EXPAND_LIBS_ORDER_STYLE,
49 _SAVE_LDFLAGS="$LDFLAGS"
50 LDFLAGS="${LDFLAGS} -Wl,--section-ordering-file,conftest.order"
52 EXPAND_LIBS_ORDER_STYLE=section-ordering-file,
53 EXPAND_LIBS_ORDER_STYLE=)
54 LDFLAGS="$_SAVE_LDFLAGS"
55 if test -z "$EXPAND_LIBS_ORDER_STYLE"; then
56 if AC_TRY_COMMAND(${CC-cc} ${DSO_LDOPTS} ${LDFLAGS} -o ${DLL_PREFIX}conftest${DLL_SUFFIX} -Wl,--verbose 2> /dev/null | sed -n '/^===/,/^===/p' | grep '\.text'); then
57 EXPAND_LIBS_ORDER_STYLE=linkerscript
59 EXPAND_LIBS_ORDER_STYLE=none
61 rm -f ${DLL_PREFIX}conftest${DLL_SUFFIX}
64 AC_SUBST(EXPAND_LIBS_ORDER_STYLE)