This is a patch to the auto-generated libtool script that allows it to treat "-F*" arguments identically to "-L*" arguments. -F is used by Mac OSX to specify the path to frameworks that are not on the system path, in the same way that -L is used to specify paths to shared libraries.

libtool.diff

--- libtool	2014-01-07 07:56:47.000000000 -0600
+++ libtool.mcg	2014-01-07 07:55:00.000000000 -0600
@@ -5982,13 +5982,17 @@
 	continue
 	;;
 
-      -L*)
-	func_stripname "-L" '' "$arg"
+      -L*|-F*)
+	case $arg in
+	-F*) lf_prefix="-F" ;;
+        -*)  lf_prefix="-L" ;;
+        esac
+	func_stripname "$lf_prefix" '' "$arg"
 	if test -z "$func_stripname_result"; then
 	  if test "$#" -gt 0; then
-	    func_fatal_error "require no space between \`-L' and \`$1'"
+	    func_fatal_error "require no space between \`-[LF]' and \`$1'"
 	  else
-	    func_fatal_error "need path for \`-L' option"
+	    func_fatal_error "need path for \`-[LF]' option"
 	  fi
 	fi
 	func_resolve_sysroot "$func_stripname_result"
@@ -6004,14 +6008,14 @@
 	  ;;
 	esac
 	case "$deplibs " in
-	*" -L$dir "* | *" $arg "*)
+	*" $lf_prefix$dir "* | *" $arg "*)
 	  # Will only happen for absolute or sysroot arguments
 	  ;;
 	*)
 	  # Preserve sysroot, but never include relative directories
 	  case $dir in
 	    [\\/]* | [A-Za-z]:[\\/]* | =*) deplibs+=" $arg" ;;
-	    *) deplibs+=" -L$dir" ;;
+	    *) deplibs+=" $lf_prefix$dir" ;;
 	  esac
 	  lib_search_path+=" $dir"
 	  ;;
@@ -6698,13 +6702,17 @@
 	  fi
 	  continue
 	  ;;
-	-L*)
+	-L*|-F*)
+          case $deplib in
+	  -F*) lf_prefix="-F" ;;
+          *) lf_prefix="-L" ;;
+          esac
 	  case $linkmode in
 	  lib)
 	    deplibs="$deplib $deplibs"
 	    test "$pass" = conv && continue
 	    newdependency_libs="$deplib $newdependency_libs"
-	    func_stripname '-L' '' "$deplib"
+	    func_stripname "$lf_prefix" '' "$deplib"
 	    func_resolve_sysroot "$func_stripname_result"
 	    newlib_search_path+=" $func_resolve_sysroot_result"
 	    ;;
@@ -6719,12 +6727,12 @@
 	      compile_deplibs="$deplib $compile_deplibs"
 	      finalize_deplibs="$deplib $finalize_deplibs"
 	    fi
-	    func_stripname '-L' '' "$deplib"
+	    func_stripname "$lf_prefix" '' "$deplib"
 	    func_resolve_sysroot "$func_stripname_result"
 	    newlib_search_path+=" $func_resolve_sysroot_result"
 	    ;;
 	  *)
-	    func_warning "\`-L' is ignored for archives/objects"
+	    func_warning "\`-[LF]' is ignored for archives/objects"
 	    ;;
 	  esac # linkmode
 	  continue