--- glpk-4.31.orig/src/Makefile.am
+++ glpk-4.31/src/Makefile.am
@@ -4,7 +4,7 @@
 
 lib_LTLIBRARIES = libglpk.la
 
-libglpk_la_LDFLAGS = -version-info 16:0:16
+libglpk_la_LDFLAGS = -version-info 16:0:16 -export-symbols-regex '^(glp_|_glp_lpx).*'
 
 libglpk_la_SOURCES = \
 glpapi01.c \