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Merge pull request #13 from sideeffect42/old-gcc-and-bigendian-fix

Fix compilation with older versions of GCC (and on big-endian systems)

--- a/frontend/mp4write.c

+++ b/frontend/mp4write.c

@@ -17,6 +17,10 @@

     along with this program.  If not, see <http://www.gnu.org/licenses/>.

 ****************************************************************************/

+#ifdef HAVE_CONFIG_H

+#include "config.h"

+#endif

+

 #include <stdlib.h>

 #include <stdio.h>

 #include <stdint.h>

--- a/libfaac/quantize.c

+++ b/libfaac/quantize.c

@@ -40,6 +40,12 @@

 # define bit_SSE2 (1 << 26)

 #endif

+#ifdef __GNUC__

+#define GCC_VERSION (__GNUC__ * 10000 \

+                     + __GNUC_MINOR__ * 100 \

+                     + __GNUC_PATCHLEVEL__)

+#endif

+

 #define MAGIC_NUMBER  0.4054

 #define NOISEFLOOR 0.4

@@ -147,7 +153,7 @@

                   )

 {

     int sb, cnt;

-#ifndef __clang__

+#if !defined(__clang__) && (!defined(__GNUC__) || GCC_VERSION >= 40600)

     /* 2^0.25 (1.50515 dB) step from AAC specs */

     static const double sfstep = 1.0 / log10(sqrt(sqrt(2.0)));

 #else