From: Eric Blake <eblake@redhat.com>
Date: Tue, 16 Mar 2010 21:48:44 +0000 (-0600)
Subject: Optimize AC_DEFINE.
X-Git-Tag: v2.66~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be4bf08802b79244f184dfd8dffa0fd5901df8f2;p=thirdparty%2Fautoconf.git

Optimize AC_DEFINE.

* lib/autoconf/general.m4 (_AC_DEFINE_Q): Avoid overhead of
AS_LITERAL_IF.

Signed-off-by: Eric Blake <eblake@redhat.com>
---

diff --git a/ChangeLog b/ChangeLog
index 9f5c879d..601b1695 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-07-02  Eric Blake  <eblake@redhat.com>
+
+	Optimize AC_DEFINE.
+	* lib/autoconf/general.m4 (_AC_DEFINE_Q): Avoid overhead of
+	AS_LITERAL_IF.
+
 2010-07-02  Stefano Lattarini  <stefano.lattarini@gmail.com>
 	and Eric Blake  <eblake@redhat.com>
 
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index cadec67a..666ba561 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -2123,8 +2123,8 @@ m4_define([_AC_DEFINE_Q],
 [AC_DEFINE_TRACE(AC_name)]dnl
 [m4_cond([m4_index([$3], [
 ])], [-1], [],
-	[AS_LITERAL_IF([$3], [m4_bregexp([[$3]], [[^\\]
-], [-])])], [], [],
+	[m4_bregexp([[$3]], [[^\\]
+], [-])], [], [],
 	[m4_warn([syntax], [AC_DEFINE]m4_if([$1], [_AC_DEFINE], [],
   [[_UNQUOTED]])[: `$3' is not a valid preprocessor define value])])]dnl
 [m4_ifval([$4], [AH_TEMPLATE(AC_name, [$4])