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configure: test the metal compiler before use 

Apparently Metal.framework is included with the command line tools
(and thus may be present without Xcode), but the Metal compiler is only
included as part of Xcode.
This commit is contained in:
rcombs 2021-12-21 02:35:40 -06:00
parent 3767900860
commit 62ad427823
1 changed files with 2 additions and 0 deletions
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2
configure vendored
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@ -6365,6 +6365,8 @@ enabled videotoolbox && {
check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferTransferFunction_SMPTE_ST_428_1 "-framework CoreVideo"
}
enabled metal && test_cmd $metalcc -v || disable metal
check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
check_type "windows.h dxva.h" "DXVA_PicParams_AV1" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0