From 3250003c79e24f79d00603b67b2b9543fbd10e82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A5ns=20Rullg=C3=A5rd?= <mans@mansr.com>
Date: Sat, 12 Jul 2008 20:55:04 +0000
Subject: [PATCH] configure: allow !foo as argument to enabled/disabled and
 *_deps lists

Originally committed as revision 14194 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 configure | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 040d921840..c6ff364217 100755
--- a/configure
+++ b/configure
@@ -269,11 +269,13 @@ disable(){
 }
 
 enabled(){
-    eval test "x\$$1" = "xyes"
+    test "${1#!}" = "$1" && op== || op=!=
+    eval test "x\$${1#!}" $op "xyes"
 }
 
 disabled(){
-    eval test "x\$$1" = "xno"
+    test "${1#!}" = "$1" && op== || op=!=
+    eval test "x\$${1#!}" $op "xno"
 }
 
 enabled_all(){
@@ -317,6 +319,7 @@ is_in(){
 
 check_deps(){
     for cfg; do
+        cfg="${cfg#!}"
         enabled ${cfg}_checking && die "Circular dependency for $cfg."
         disabled ${cfg}_checking && continue
         enable ${cfg}_checking