libtool.m4: Add spaces before -L in grep searches

Current searching for "-L" in link paths is over-greedy and
incorrectly handles paths with -L in them.

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896861

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 322ca1fe06436ebe704e203e79187baad3961209..17b7d56c91fa2fa799bcd63d569d1e5c23226e45 100644 (file)
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -6507,7 +6507,7 @@ if test yes != "$_lt_caught_CXX_error"; then
       # Commands to make compiler produce verbose output that lists
       # what "hidden" libraries, object files and flags are used when
       # linking a shared library.
-      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " [[-]]L"'
 
     else
       GXX=no
@@ -6948,7 +6948,7 @@ if test yes != "$_lt_caught_CXX_error"; then
            # explicitly linking system object files so we need to strip them
            # from the output so that they don't get included in the library
            # dependencies.
-           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "[[-]]L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+           output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP " [[-]]L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
            ;;
           *)
            if test yes = "$GXX"; then
@@ -7287,7 +7287,7 @@ if test yes != "$_lt_caught_CXX_error"; then
              # Commands to make compiler produce verbose output that lists
              # what "hidden" libraries, object files and flags are used when
              # linking a shared library.
-             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
+             output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " [[-]]L"'
 
            else
              # FIXME: insert proper C++ library support
@@ -7371,7 +7371,7 @@ if test yes != "$_lt_caught_CXX_error"; then
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
+               output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " [[-]]L"'
              else
                # g++ 2.7 appears to require '-G' NOT '-shared' on this
                # platform.
@@ -7382,7 +7382,7 @@ if test yes != "$_lt_caught_CXX_error"; then
                # Commands to make compiler produce verbose output that lists
                # what "hidden" libraries, object files and flags are used when
                # linking a shared library.
-               output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "[[-]]L"'
+               output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " [[-]]L"'
              fi
 
              _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $wl$libdir'