option(enable_gtnets "Whether gtnets model is activated." on)
option(enable_smpi "This variable set smpi lib." on)
+option(enable_lua "Whether the lua bindings are activated." on)
option(enable_pcre "Whether the pcre lib is activated." on)
if(WIN32 OR APPLE)
set(enable_smpi off CACHE TYPE INTERNAL FORCE)
+set(enable_lua off CACHE TYPE INTERNAL FORCE)
endif(WIN32 OR APPLE)
option(enable_compile_optimizations "" on)