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-rw-r--r--Makefile.rules4
1 files changed, 4 insertions, 0 deletions
diff --git a/Makefile.rules b/Makefile.rules
index a22f19c16..45989d684 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -17,6 +17,10 @@
-include $(ASTTOPDIR)/makeopts
+# Helpful functions
+# call with $(call function,...)
+tolower = $(shell echo $(1) | tr '[:upper:]' '[:lower:]')
+
.PHONY: dist-clean
# If 'make' decides to create intermediate files to satisfy a build requirement