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-rw-r--r--ext/ripper/depend2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/ripper/depend b/ext/ripper/depend
index 4f48512a41..f85d887a71 100644
--- a/ext/ripper/depend
+++ b/ext/ripper/depend
@@ -44,7 +44,7 @@ eventids2table.c: $(srcdir)/tools/generate.rb $(SRC2)
preproc: ripper.E
ripper.E: ripper.c
$(ECHO) preprocessing ripper.c
- $(Q) $(CC) -E $(CPPFLAGS) ripper.c | $(RUBY) $(srcdir)/tools/strip.rb > $@
+ $(Q) $(CC) -E $(INCFLAGS) $(CPPFLAGS) $< | $(RUBY) $(srcdir)/tools/strip.rb > $@
# AUTOGENERATED DEPENDENCIES START
ripper.o: $(RUBY_EXTCONF_H)