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