[FFmpeg-devel] [PATCH] patch to fix libswscale build failed under x86_64-w64-mingw32

[Reimar Döffinger]

On Sat, Jan 02, 2010 at 06:10:40PM +0800, zhou drangon wrote:
> hi,
> 
> libswscale build failed under x86_64-w64-mingw32, error message :
> swscale.s: Assembler messages:
> swscale.s:15700: Error: suffix or operands invalid for `cmp'
> 
> 
> the following is the patch :
> 
> 
> Index: swscale_template.c
> ===================================================================
> --- swscale_template.c  (revision 30166)
> +++ swscale_template.c  (working copy)
> @@ -2502,7 +2502,7 @@
>  /* GCC 3.3 makes MPlayer crash on IA-32 machines when using "g" operand here,
>  which is needed to support GCC 4.0. */
>  #if ARCH_X86_64 && AV_GCC_VERSION_AT_LEAST(3,4)
> -            :: "m" (src1), "m" (dst), "g" (dstWidth), "m"
> (xInc_shr16), "m" (xInc_mask),
> +            :: "m" (src1), "m" (dst), "g" ((x86_reg)dstWidth), "m"
> (xInc_shr16), "m" (xInc_mask),

I don't think you can use "g" on the result of a cast, at least llvm
does (did?) tend to refuse to compile that.