.gitignore vs. Makefiles

How about this for those of us who do srcdir builds?

.gitignore

@@ -29,3 +29,25 @@ Makefile.in
 /src/xz/xz
 /src/xzdec/lzmadec
 /src/xzdec/xzdec
+
+/lib/Makefile
+/tests/Makefile
+/Makefile
+/po/Makefile
+/debug/Makefile
+/src/scripts/Makefile
+/src/lzmadec/Makefile
+/src/xz/Makefile
+/src/Makefile
+/src/liblzma/check/Makefile
+/src/liblzma/delta/Makefile
+/src/liblzma/Makefile
+/src/liblzma/api/Makefile
+/src/liblzma/lz/Makefile
+/src/liblzma/rangecoder/Makefile
+/src/liblzma/simple/Makefile
+/src/liblzma/lzma/Makefile
+/src/liblzma/common/Makefile
+/src/liblzma/subblock/Makefile
+/src/lzma/Makefile
+/src/xzdec/Makefile