--- origsrc/glpk-4.57/configure.ac	2015-11-08 08:00:00.000000000 +0100
+++ src/glpk-4.57/configure.ac	2015-11-10 07:09:53.195219900 +0100
@@ -141,6 +141,20 @@ else
    AC_MSG_RESULT([no])
 fi
 
+AC_MSG_CHECKING([if libtool needs -no-undefined flag to build shared libraries])
+case "`uname`" in
+   CYGWIN*|MINGW*|AIX*)
+      ## Add in the -no-undefined flag to LDFLAGS for libtool.
+      AC_MSG_RESULT([yes])
+      NOUNDEFINED=" -no-undefined"
+      ;;
+   *)
+      ## Don't add in anything.
+      AC_MSG_RESULT([no])
+      ;;
+esac
+AC_SUBST([NOUNDEFINED])
+
 AC_CONFIG_FILES(
    [src/Makefile examples/Makefile Makefile])
 AC_OUTPUT
--- origsrc/glpk-4.57/src/Makefile.am	2015-11-08 08:00:00.000000000 +0100
+++ src/glpk-4.57/src/Makefile.am	2015-11-10 07:11:09.639354400 +0100
@@ -19,7 +19,8 @@ libglpk_la_CPPFLAGS = \
 
 libglpk_la_LDFLAGS = \
 -version-info 38:0:2 \
--export-symbols-regex '^glp_*'
+-export-symbols-regex '^glp_*' \
+${NOUNDEFINED}
 
 libglpk_la_SOURCES = \
 avl.c \