?= just checks to see if a variable is not yet defined. If MENUSELECT_CFLAGS
authorRussell Bryant <russell@russellbryant.com>
Wed, 28 Jun 2006 21:33:39 +0000 (21:33 +0000)
committerRussell Bryant <russell@russellbryant.com>
Wed, 28 Jun 2006 21:33:39 +0000 (21:33 +0000)
was not found in the user level makeopts file, the variable is defined, but
empty.

I wish we could just require GNU make 3.81  :)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@36229 65c4cc65-6c06-0410-ace0-fbb531ad65f3

Makefile

index bbf3a66..bebfbb8 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -134,7 +134,9 @@ OTHER_SUBDIR_CFLAGS=-I../include -I..
 
 ifeq ($(origin MENUSELECT_CFLAGS),undefined)
   MENUSELECT_CFLAGS:=$(shell grep MENUSELECT_CFLAGS $(USER_MAKEOPTS) .)
-  MENUSELECT_CFLAGS?=$(shell grep MENUSELECT_CFLAGS $(GLOBAL_MAKEOPTS) .)
+  ifeq ($(MENUSELECT_CFLAGS),)
+    MENUSELECT_CFLAGS:=$(shell grep MENUSELECT_CFLAGS $(GLOBAL_MAKEOPTS) .)
+  endif
   ifneq ($(MENUSELECT_CFLAGS),)
     MENUSELECT_CFLAGS:=$(shell echo $(MENUSELECT_CFLAGS) | cut -f2 -d'=')
   endif