Only evaluate the $(shell) expansions once in Makefiles

diff --git a/common.mk b/common.mk
index 059f9b2fbac7aecd037d203e3af022656619a61f..70305148a4a4b7047941173c4020f64ad9f3cdd0 100644 (file)
--- a/common.mk
+++ b/common.mk
@@ -1,8 +1,8 @@
 UNAME=$(shell uname)
 DEBUG=1
 INSTALL=install
-GIT_VERSION=$(shell git describe --tags --always)
-VERSION=$(shell git describe --tags --abbrev=0)
+GIT_VERSION:=$(shell git describe --tags --always)
+VERSION:=$(shell git describe --tags --abbrev=0)
 
 CFLAGS += -std=c99
 CFLAGS += -pipe