Use ?:= as the assignement operator for PREFIX.

This creates a simply expanded variable which is more suitable for
the PREFIX variable.

diff --git a/Makefile b/Makefile
index c61dff74c58533953951f105aaec1ce4c7965496..78c9b1697b647cb6a56c9814ea2a94d8b86b8bdd 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ CPPFLAGS += -I/usr/local/include
 
 LDFLAGS += -L/usr/local/lib
 
-PREFIX ?= /usr/local
+PREFIX ?:= /usr/local
 ifeq "$(origin CC)" "default"
        CC := gcc
 endif