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-rw-r--r--doc/mrbgems/ruby_extension_example/Makefile6
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/mrbgems/ruby_extension_example/Makefile b/doc/mrbgems/ruby_extension_example/Makefile
index 7ebec4f09..33eee97e9 100644
--- a/doc/mrbgems/ruby_extension_example/Makefile
+++ b/doc/mrbgems/ruby_extension_example/Makefile
@@ -2,6 +2,8 @@ include ../../Makefile4gem
GEM := ruby_extension_example
-gem-all :
+GEM_RB_FILES := $(wildcard $(MRB_DIR)/*.rb)
-gem-clean :
+gem-all : gem-rb-files
+
+gem-clean : gem-clean-rb-files