Newer versions of OS X use the blocks extension in VDA-related headers.
Some compilers, like current gcc, do not support the blocks extension
and fail to compile code using those headers.
asm_mod_q
attribute_may_alias
attribute_packed
+ blocks_extension
ebp_available
ebx_available
gnu_as
d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
dxva2_lib_deps="dxva2"
-vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
+vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
h263_vaapi_hwaccel_deps="vaapi"
check_objcflags -fobjc-arc && enable objc_arc
+check_cc <<EOF && enable blocks_extension
+void (^block)(void);
+EOF
+
# add some linker flags
check_ldflags -Wl,--warn-common
check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample