Index: Makefile
==================================================================
--- Makefile
+++ Makefile
@@ -13,15 +13,15 @@
 
 utils ${TESTS}: src
 
 tarball:
 	echo "Generating tarball for version ${PACKAGE_VERSION}..."
-	rm -fr tmp.tar objfw-${PACKAGE_VERSION} objfw-${PACKAGE_VERSION}.tar \
+	rm -fr objfw-${PACKAGE_VERSION} objfw-${PACKAGE_VERSION}.tar \
 		objfw-${PACKAGE_VERSION}.tar.gz
-	git archive HEAD --prefix objfw-${PACKAGE_VERSION}/ -o tmp.tar
-	tar xf tmp.tar
-	rm -f tmp.tar objfw-${PACKAGE_VERSION}/.gitignore
+	mkdir objfw-${PACKAGE_VERSION}
+	git --work-tree=objfw-${PACKAGE_VERSION} checkout .
+	rm objfw-${PACKAGE_VERSION}/.gitignore
 	cp configure config.h.in objfw-${PACKAGE_VERSION}/
 	tar cf objfw-${PACKAGE_VERSION}.tar objfw-${PACKAGE_VERSION}
 	rm -fr objfw-${PACKAGE_VERSION}
 	gzip -9 objfw-${PACKAGE_VERSION}.tar
 	rm -f objfw-${PACKAGE_VERSION}.tar