Makefile: Remove output files before replacing them

This one fixes all the "Permission denied" errors we got when invoking
make(1) after modifying a source file and removes the need to delete the
generated scripts manually.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 9c8986f..767988a 100644
--- a/Makefile
+++ b/Makefile
@@ -62,6 +62,7 @@ edit = sed -e "s|@pkgdatadir[@]|$(DESTDIR)$(PREFIX)/share/devtools|g"
 
 %: %.in Makefile lib/common.sh
 	@echo "GEN $@"
+	@$(RM) "$@"
 	@m4 -P $@.in | $(edit) >$@
 	@chmod a-w "$@"
 	@chmod +x "$@"