lame: fix build on 32-bit with gcc 4.9

pkgs/development/libraries/lame/default.nix

@@ -30,6 +30,8 @@ stdenv.mkDerivation rec {
     sha256 = "1zr3kadv35ii6liia0bpfgxpag27xcivp571ybckpbz4b10nnd14";
   };
 
+  patches = [ ./gcc-4.9.patch ];
+
   nativeBuildInputs = [ ]
     ++ optional nasmSupport nasm;
 

pkgs/development/libraries/lame/gcc-4.9.patch

@@ -0,0 +1,33 @@
+fix sse optimizations build on 32-bit with gcc 4.9
+http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=351af417bae0d09bd5a3753d1237f03adf591933
+
+xmm_quantize_sub.c: In function 'init_xrpow_core_sse':
+xmm_quantize_sub.c:65:18: warning: SSE vector return without SSE enabled changes the ABI [-W
+psabi]
+     const __m128 vec_fabs_mask = _mm_loadu_ps(&fabs_mask._float[0]);
+                  ^
+In file included from xmm_quantize_sub.c:37:0:
+/usr/lib/gcc/i686-w64-mingw32/4.9.0/include/xmmintrin.h:933:1: error: inlining failed in call to always_inline '_mm_loadu_ps': target specific option mismatch
+ _mm_loadu_ps (float const *__P)
+ ^
+xmm_quantize_sub.c:65:18: error: called from here
+     const __m128 vec_fabs_mask = _mm_loadu_ps(&fabs_mask._float[0]);
+                  ^
+--- lame/libmp3lame/vector/xmm_quantize_sub.c.orig	2014-06-08 12:16:19.455468042 -0700
++++ lame/libmp3lame/vector/xmm_quantize_sub.c	2014-06-08 12:16:09.592356980 -0700
+@@ -35,6 +35,7 @@
+ #ifdef HAVE_XMMINTRIN_H
+ 
+ #include <xmmintrin.h>
++#pragma GCC target("sse")
+ 
+ typedef union {
+     int32_t _i_32[4]; /* unions are initialized by its first member */
+@@ -124,6 +125,7 @@
+ }
+ 
+ 
++#pragma GCC target("sse2")
+ void
+ fht_SSE2(FLOAT * fz, int n)
+ {