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-rw-r--r--Makefile.build2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile.build b/Makefile.build
index dd27cfcbdd..6ed452dce8 100644
--- a/Makefile.build
+++ b/Makefile.build
@@ -910,7 +910,7 @@ endif
$(HIDE)$(OCAMLYACC) $<
%_mod.ml: %.mllib
- sed -e "s/\([^ ]\+\)/let _=Mltop.add_known_module\"\1\" /g" $< > $@
+ sed -e "s/\([^ ]\{1,\}\)/let _=Mltop.add_known_module\"\1\" /g" $< > $@
echo "let _=Mltop.add_known_module\"$(notdir $*)\"" >> $@
%.ml4-preprocessed: %.ml4 | %.ml4.d