[nginx] Configure: enabled -Werror for clang.

[Ruslan Ermilov]

details:   http://hg.nginx.org/nginx/rev/c86dd32573c0
branches:  
changeset: 5539:c86dd32573c0
user:      Ruslan Ermilov <ru at nginx.com>
date:      Tue Jan 28 00:31:31 2014 +0400
description:
Configure: enabled -Werror for clang.

Modern clang versions seem to no longer produce warnings for
system headers on Linux (at least clang 3.3 works), hence the
change.  For older versions --with-cc-opt="-Wno-error" can be
used as a workaround.

diffstat:

 auto/cc/clang |  2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diffs (12 lines):

diff -r a387ce36744a -r c86dd32573c0 auto/cc/clang
--- a/auto/cc/clang	Thu Jan 23 22:09:59 2014 +0900
+++ b/auto/cc/clang	Tue Jan 28 00:31:31 2014 +0400
@@ -89,7 +89,7 @@ CFLAGS="$CFLAGS -Wconditional-uninitiali
 CFLAGS="$CFLAGS -Wno-unused-parameter"
 
 # stop on warning
-#CFLAGS="$CFLAGS -Werror"
+CFLAGS="$CFLAGS -Werror"
 
 # debug
 CFLAGS="$CFLAGS -g"