Merge commit '4db96649ca700db563d9da4ebe70bf9fc4c7a6ba'

* commit '4db96649ca700db563d9da4ebe70bf9fc4c7a6ba':
  avutil: Ensure that emms_c is always defined, even on non-x86
  configure: Move MinGW CPPFLAGS setting to libc section, where it belongs
  avutil: Move emms code to x86-specific header

Conflicts:
	configure
	libavutil/internal.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>

configure

@@ -3226,7 +3226,6 @@ case $target_os in
         objformat="win32"
         ranlib=:
         enable dos_paths
-        add_cppflags -U__STRICT_ANSI__
         ;;
     win32|win64)
         if enabled shared; then
@@ -3370,6 +3369,7 @@ elif check_header _mingw.h; then
         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
         die "ERROR: MinGW runtime version must be >= 3.15."
+    add_cppflags -U__STRICT_ANSI__
     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
             __MINGW64_VERSION_MAJOR < 3"; then
         add_compat msvcrt/snprintf.o

libavutil/internal.h

@@ -40,6 +40,14 @@
 #include "cpu.h"
 #include "dict.h"
 
+#if ARCH_X86
+#   include "x86/emms.h"
+#endif
+
+#ifndef emms_c
+#   define emms_c()
+#endif
+
 #ifndef attribute_align_arg
 #if ARCH_X86_32 && AV_GCC_VERSION_AT_LEAST(4,2)
 #    define attribute_align_arg __attribute__((force_align_arg_pointer))
@@ -154,25 +162,4 @@
 #   define ONLY_IF_THREADS_ENABLED(x) NULL
 #endif
 
-#if HAVE_MMX_INLINE
-/**
- * Empty mmx state.
- * this must be called between any dsp function and float/double code.
- * for example sin(); dsp->idct_put(); emms_c(); cos()
- */
-static av_always_inline void emms_c(void)
-{
-    if(av_get_cpu_flags() & AV_CPU_FLAG_MMX)
-        __asm__ volatile ("emms" ::: "memory");
-}
-#elif HAVE_MMX && HAVE_MM_EMPTY
-#   include <mmintrin.h>
-#   define emms_c _mm_empty
-#elif HAVE_MMX && HAVE_YASM
-#   include "libavutil/x86/emms.h"
-#   define emms_c avpriv_emms_yasm
-#else
-#   define emms_c()
-#endif /* HAVE_MMX_INLINE */
-
 #endif /* AVUTIL_INTERNAL_H */

libavutil/x86/emms.h

@@ -19,6 +19,28 @@
 #ifndef AVUTIL_X86_EMMS_H
 #define AVUTIL_X86_EMMS_H
 
+#include "config.h"
+#include "libavutil/attributes.h"
+
 void avpriv_emms_yasm(void);
 
+#if HAVE_MMX_INLINE
+#   define emms_c emms_c
+/**
+ * Empty mmx state.
+ * this must be called between any dsp function and float/double code.
+ * for example sin(); dsp->idct_put(); emms_c(); cos()
+ */
+static av_always_inline void emms_c(void)
+{
+    if(av_get_cpu_flags() & AV_CPU_FLAG_MMX)
+        __asm__ volatile ("emms" ::: "memory");
+}
+#elif HAVE_MMX && HAVE_MM_EMPTY
+#   include <mmintrin.h>
+#   define emms_c _mm_empty
+#elif HAVE_MMX_EXTERNAL
+#   define emms_c avpriv_emms_yasm
+#endif /* HAVE_MMX_INLINE */
+
 #endif /* AVUTIL_X86_EMMS_H */