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-rw-r--r--Makefile.inc1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile.inc b/Makefile.inc
index aab1efbcd2..ab7248a1a1 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -112,6 +112,7 @@ spc :=
spc +=
$(spc) :=
$(spc) +=
+comma := ,
# files-in-dir-recursive,dir,files
files-in-dir-recursive=$(filter $(1)%,$(2))