From fe97ab6059cecd77e789d58ef7122fc9c3b91700 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Tue, 20 Nov 2012 13:45:35 +0100
Subject: configure: add --disable-optimization, change --enable-debug
 semantics

--disable-optimization removes -O2 from CFLAGS.

Now --enable-debug only adds -g to CFLAGS, and doesn't disable
optimization anymore.

As an obscure feature, --enable-optimization=<n> adds -O<n> to CFLAGS.

Also remove stray $def_debug from configure.
---
 configure | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 705aba1f5e..78f09a736d 100755
--- a/configure
+++ b/configure
@@ -387,6 +387,7 @@ Miscellaneous options:
 Advanced options:
   --enable-shm              enable shm [autodetect]
   --enable-debug[=1-3]      compile-in debugging information [disable]
+  --disable-optimization    compile without -O2 [enable]
 
 Use these options if autodetection fails:
   --extra-cflags=FLAGS        extra CFLAGS
@@ -562,15 +563,22 @@ for ac_option do
     ;;
   --enable-debug)
     _debug='-g'
-    _opt=
     ;;
   --enable-debug=*)
     _debug=$(echo $_echo_n '-g'$_echo_c; echo $ac_option | cut -d '=' -f 2)
-    _opt=
     ;;
   --disable-debug)
     _debug=
     ;;
+  --enable-optimization)
+    _opt='-O2'
+    ;;
+  --enable-optimization=*)
+    _opt=$(echo $_echo_n '-O'$_echo_c; echo $ac_option | cut -d '=' -f 2)
+    ;;
+  --disable-optimization)
+    _opt=
+    ;;
   --enable-gettext)                 _gettext=yes                ;;
   --disable-gettext)                _gettext=no                 ;;
   --enable-cross-compile)           _cross_compile=yes          ;;
@@ -3408,7 +3416,6 @@ $def_priority
 
 
 /* configurable options */
-$def_debug
 $def_sortsub
 $def_stream_cache
 $def_pthread_cache
-- 
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