extconf.rb in tomoto-0.1.3

- old
+ new

@@ -21,11 +21,12 @@
 
 ext = File.expand_path(".", __dir__)
 tomoto = File.expand_path("../../vendor/tomotopy/src/TopicModel", __dir__)
 eigen = File.expand_path("../../vendor/eigen", __dir__)
 eigen_rand = File.expand_path("../../vendor/EigenRand", __dir__)
+variant = File.expand_path("../../vendor/variant/include", __dir__)
 
 $srcs = Dir["{#{ext},#{tomoto}}/*.cpp"]
-$INCFLAGS += " -I#{tomoto} -I#{eigen} -I#{eigen_rand}"
+$INCFLAGS += " -I#{tomoto} -I#{eigen} -I#{eigen_rand} -I#{variant}"
 $VPATH << tomoto
 
 create_makefile("tomoto/ext")