?= 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)
commit0f875c3664467ff73578818ed2f0e77513c0ad01
tree39812e69a786f7e5a90e7b23f5943d177e42eb7f
parentecab03293c5919cd6d0afccc46a2c5ff37e4f7e5
?= 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
Makefile