perl: fix make clean

When perl/Makefile is stale with respect to perl/Makefile.PL, it
prevents "make clean" from completing which is quite irritating.
Fix it by calling subdirectory make clean twice as needed.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/Makefile b/Makefile
index aa0618e..a76526a 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -744,7 +744,7 @@ clean:
        rm -f $(GIT_TARNAME).tar.gz git-core_$(GIT_VERSION)-*.tar.gz
        rm -f $(htmldocs).tar.gz $(manpages).tar.gz
        $(MAKE) -C Documentation/ clean
-       [ ! -e perl/Makefile ] || $(MAKE) -C perl/ clean
+       [ ! -e perl/Makefile ] || $(MAKE) -C perl/ clean || $(MAKE) -C perl/ clean
        $(MAKE) -C templates/ clean
        $(MAKE) -C t/ clean
        rm -f GIT-VERSION-FILE GIT-CFLAGS