From 7182cd7ab02785f81134db90caa6fe940a12d2fd Mon Sep 17 00:00:00 2001
From: Thomas Goyne
Date: Wed, 23 May 2012 14:26:25 -0700
Subject: libagg: Fix compilation errors

Remove AM_C_PROTOTYPES from configure.in, which was dropped in automake
1.12 as pre-ANSI C compilers are no longer worth caring about.

Add fails_with clang. AGG tries to return a const reference as a
non-const reference, which is allowed by gcc and llvm but not clang 3.1.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
---
 Library/Formula/libagg.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'Library')

diff --git a/Library/Formula/libagg.rb b/Library/Formula/libagg.rb
index 0bcfdf614..a3e1eb1d3 100644
--- a/Library/Formula/libagg.rb
+++ b/Library/Formula/libagg.rb
@@ -9,9 +9,21 @@ class Libagg < Formula
   depends_on 'pkg-config' => :build
   depends_on 'sdl'
 
+  fails_with :clang do
+    build 318
+    cause <<-EOS.undent
+      AGG tries to return a const reference as a non-const reference, which is
+      rejected by clang 3.1 but accepted by gcc
+    EOS
+  end
+
   def install
     ENV.x11 # For freetype
 
+    # AM_C_PROTOTYPES was removed in automake 1.12, as it's only needed for
+    # pre-ANSI compilers
+    inreplace 'configure.in', 'AM_C_PROTOTYPES', ''
+
     # No configure script. We need to run autoreconf, and aclocal and automake
     # need some direction.
     ENV['ACLOCAL'] = "aclocal -I#{HOMEBREW_PREFIX}/share/aclocal" # To find SDL m4 files
-- 
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