x86: Fix linking with some or all of yasm, mmx, optimizations disabled

Some optimized template functions reference optimized symbols, so they
must be explicitly disabled when those symbols are unavailable.

libavcodec/x86/mpegaudiodec.c

@@ -182,6 +182,7 @@ static void apply_window_mp3(float *in, float *win, int *unused, float *out,
 
 #endif /* HAVE_INLINE_ASM */
 
+#if HAVE_YASM
 #define DECL_IMDCT_BLOCKS(CPU1, CPU2)                                       \
 static void imdct36_blocks_ ## CPU1(float *out, float *buf, float *in,      \
                                int count, int switch_point, int block_type) \
@@ -219,6 +220,7 @@ DECL_IMDCT_BLOCKS(sse2,sse)
 DECL_IMDCT_BLOCKS(sse3,sse)
 DECL_IMDCT_BLOCKS(ssse3,sse)
 DECL_IMDCT_BLOCKS(avx,avx)
+#endif /* HAVE_YASM */
 
 void ff_mpadsp_init_mmx(MPADSPContext *s)
 {

libavcodec/x86/mpegvideoenc.c

@@ -30,13 +30,16 @@
 
 extern uint16_t ff_inv_zigzag_direct16[64];
 
+#if HAVE_MMX
 #define COMPILE_TEMPLATE_MMXEXT 0
 #define COMPILE_TEMPLATE_SSE2   0
 #define COMPILE_TEMPLATE_SSSE3  0
 #define RENAME(a) a ## _MMX
 #define RENAMEl(a) a ## _mmx
 #include "mpegvideoenc_template.c"
+#endif /* HAVE_MMX */
 
+#if HAVE_MMXEXT
 #undef COMPILE_TEMPLATE_SSSE3
 #undef COMPILE_TEMPLATE_SSE2
 #undef COMPILE_TEMPLATE_MMXEXT
@@ -48,7 +51,9 @@ extern uint16_t ff_inv_zigzag_direct16[64];
 #define RENAME(a) a ## _MMX2
 #define RENAMEl(a) a ## _mmx2
 #include "mpegvideoenc_template.c"
+#endif /* HAVE_MMXEXT */
 
+#if HAVE_SSE2
 #undef COMPILE_TEMPLATE_MMXEXT
 #undef COMPILE_TEMPLATE_SSE2
 #undef COMPILE_TEMPLATE_SSSE3
@@ -60,6 +65,7 @@ extern uint16_t ff_inv_zigzag_direct16[64];
 #define RENAME(a) a ## _SSE2
 #define RENAMEl(a) a ## _sse2
 #include "mpegvideoenc_template.c"
+#endif /* HAVE_SSE2 */
 
 #if HAVE_SSSE3
 #undef COMPILE_TEMPLATE_MMXEXT
@@ -73,7 +79,7 @@ extern uint16_t ff_inv_zigzag_direct16[64];
 #define RENAME(a) a ## _SSSE3
 #define RENAMEl(a) a ## _sse2
 #include "mpegvideoenc_template.c"
-#endif
+#endif /* HAVE_SSSE3 */
 
 #endif /* HAVE_INLINE_ASM */
 
@@ -84,18 +90,22 @@ void ff_MPV_encode_init_x86(MpegEncContext *s)
     const int dct_algo = s->avctx->dct_algo;
 
     if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) {
-#if HAVE_SSSE3
-        if (mm_flags & AV_CPU_FLAG_SSSE3) {
-            s->dct_quantize = dct_quantize_SSSE3;
-        } else
-#endif
-        if (mm_flags & AV_CPU_FLAG_SSE2 && HAVE_SSE) {
-            s->dct_quantize = dct_quantize_SSE2;
-        } else if (mm_flags & AV_CPU_FLAG_MMXEXT && HAVE_MMXEXT) {
-            s->dct_quantize = dct_quantize_MMX2;
-        } else if (mm_flags & AV_CPU_FLAG_MMX && HAVE_MMX) {
+#if HAVE_MMX
+        if (mm_flags & AV_CPU_FLAG_MMX && HAVE_MMX)
             s->dct_quantize = dct_quantize_MMX;
-        }
+#endif
+#if HAVE_MMXEXT
+        if (mm_flags & AV_CPU_FLAG_MMXEXT && HAVE_MMXEXT)
+            s->dct_quantize = dct_quantize_MMX2;
+#endif
+#if HAVE_SSE2
+        if (mm_flags & AV_CPU_FLAG_SSE2 && HAVE_SSE2)
+            s->dct_quantize = dct_quantize_SSE2;
+#endif
+#if HAVE_SSSE3
+        if (mm_flags & AV_CPU_FLAG_SSSE3)
+            s->dct_quantize = dct_quantize_SSSE3;
+#endif
     }
 #endif /* HAVE_INLINE_ASM */
 }

libavcodec/x86/rv40dsp_init.c

@@ -30,6 +30,7 @@
 #include "libavutil/mem.h"
 #include "dsputil_mmx.h"
 
+#if HAVE_YASM
 void ff_put_rv40_chroma_mc8_mmx  (uint8_t *dst, uint8_t *src,
                                   int stride, int h, int x, int y);
 void ff_avg_rv40_chroma_mc8_mmx2 (uint8_t *dst, uint8_t *src,
@@ -183,6 +184,8 @@ QPEL_FUNCS_SET (OP, 3, 1, OPT) \
 QPEL_FUNCS_SET (OP, 3, 2, OPT)
 /** @} */
 
+#endif /* HAVE_YASM */
+
 void ff_rv40dsp_init_x86(RV34DSPContext *c, DSPContext *dsp)
 {
 #if HAVE_YASM