--- lua/Makefile.am~	2013-06-29 22:03:22.000000000 +0100
+++ lua/Makefile.am	2013-09-23 19:07:35.157853272 +0100
@@ -230,7 +230,10 @@
 #	local/lwrs.h
 #	local/lwrs.c
 
-liblua_la_LIBADD = @WITH_LUA_SUBDIR_LIB@ -lm -lexpat
+liblua_la_LIBADD = @WITH_LUA_SUBDIR_LIB@ -lm
+if USE_LUA_CRYPTO
+liblua_la_LIBADD += -lexpat
+endif
 liblua_la_SOURCES += \
 	local/llocal.c \
 	local/llocal.h \