From: Russell Bryant <russell@russellbryant.com>
Date: Wed, 28 Jun 2006 21:33:39 +0000 (+0000)
Subject: ?= just checks to see if a variable is not yet defined.  If MENUSELECT_CFLAGS
X-Git-Tag: 1.4.0-beta1~737
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f875c3664467ff73578818ed2f0e77513c0ad01;p=thirdparty%2Fasterisk.git

?= just checks to see if a variable is not yet defined.  If MENUSELECT_CFLAGS
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
---

diff --git a/Makefile b/Makefile
index bbf3a66997..bebfbb8d60 100644
--- 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