92 строки
1.7 KiB
Bash
92 строки
1.7 KiB
Bash
dnl -*- shell-script -*-
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dnl
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dnl $HEADER
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denl
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AC_DEFUN([LAM_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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lam_check_linker_flags_work() {
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LAM_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 $cmd 2>/dev/null`"
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fi
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status="$?"
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LAM_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 $CC $CFLAGS foo.c -c -o foo.o"
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lam_check_linker_flags_work
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cmd="$libtool --mode=link $CC $CFLAGS foo.lo $LDFLAGS $LIBS -o libfoo.la"
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lam_check_linker_flags_work
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#
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# Now fake linking to it and capture the output from libtool
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#
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cmd="$libtool --dry-run --mode=link $CC bar.lo libfoo.la -o bar $extra_flags"
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lam_check_linker_flags_work yes
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eval "set $output"
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extra_ldflags=
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while test -n "[$]1"; do
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case "[$]1" in
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$CC) ;;
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bar*) ;;
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-I*) ;;
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-L*) ;;
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-lfoo) ;;
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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="$extra_ldflags [$]1"
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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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cd ..
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rm -rf conftest.$$])dnl
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