Move common functions to a shared file

* common.sh is included on build time
* most functions are copied from makepkg

1 files changed, 3 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index cd6cbda..d9c158d 100644
--- a/Makefile
+++ b/Makefile
@@ -50,9 +50,11 @@ ARCHBUILD_LINKS = \
 
 all: $(BINPROGS) $(SBINPROGS) bash_completion zsh_completion
 
+edit = sed -e "s|@pkgdatadir[@]|$(DESTDIR)$(PREFIX)/share/devtools|g"
+
 %: %.in
 	@echo "GEN $@"
-	@sed -e "s|@pkgdatadir[@]|$(DESTDIR)$(PREFIX)/share/devtools|g" "$<" >"$@"
+	@m4 -P $@.in | $(edit) >$@
 	@chmod a-w "$@"
 	@chmod +x "$@"