--- orig/src/Makefile.am	2008-08-05 12:33:48.000000000 -0400
+++ new/src/Makefile.am		2009-09-09 13:28:00.000000000 -0400
@@ -20,7 +20,7 @@
 
 lib_LTLIBRARIES = libproj.la
 
-libproj_la_LDFLAGS = -version-info 5:5:5
+libproj_la_LDFLAGS = -version-info 5:5:5 -no-undefined
 
 libproj_la_SOURCES = \
 	projects.h pj_list.h \
--- orig/src/Makefile.in	2008-08-21 22:58:46.000000000 -0400
+++ new/src/Makefine.in		2009-09-09 13:49:41.000000000 -0400
@@ -253,7 +253,7 @@
 nad2bin_LDADD = libproj.la
 geod_LDADD = libproj.la
 lib_LTLIBRARIES = libproj.la
-libproj_la_LDFLAGS = -version-info 5:5:5
+libproj_la_LDFLAGS = -version-info 5:5:5 -no-undefined
 libproj_la_SOURCES = \
 	projects.h pj_list.h \
 	PJ_aeqd.c PJ_gnom.c PJ_laea.c PJ_mod_ster.c \