--- Makefile.prog.in.orig	2013-09-02 18:50:59.000000000 -0700
+++ Makefile.prog.in	2013-09-02 18:52:56.000000000 -0700
@@ -12,7 +12,7 @@ LINKFLAGS = @LINKFLAGS@
 
 ALL_LIBS = $(XLIBS) $(LIBS)
 Makefile.lt:
-	echo 'LT_LIBS='`echo $(XLIBS)|sed 's/\.a/.la/g'` >Makefile.lt
+	echo 'LT_LIBS='`echo $(XLIBS)|sed -E 's/\.a([[:space:]]|$$)/.la\1/g'|sed 's|libosp\.la|libosp.dylib|'` >Makefile.lt
 
 PROG:=$(shell echo "$(PROG)" | sed '@program_transform_name@')