[FFmpeg-devel] commits ecee6af8bd and 4ac869ca2a break build for macOS

[Ridley Combs]

The main thing that confuses me here is that this file does build for me when I use the iOS version of the metal compiler (tbh I didn't even know there was a difference between them).

What Xcode and macOS version are you on?

> On Dec 20, 2021, at 19:18, Christopher Degawa <ccom at randomderp.com> wrote:
> 
> On Mon, Dec 20, 2021 at 6:55 PM Aman Karmani <ffmpeg at tmm1.net <mailto:ffmpeg at tmm1.net>> wrote:
> 
>> On Mon, Dec 20, 2021 at 4:52 PM Helmut K. C. Tessarek <
>> tessarek at evermeet.cx>
>> wrote:
>> 
>>> -----BEGIN PGP SIGNED MESSAGE-----
>>> Hash: SHA512
>>> 
>>> 
>>> 
>>> On 2021-12-20 19:38, Aman Karmani wrote:
>>>> Could you share the output of `xcrun metal -v`
>>> 
>>> $ xcrun metal -v
>>> Apple LLVM version 902.9 (metalfe-902.9.61)
>>> Target: air64-apple-darwin18.7.0
>>> Thread model: posix
>>> InstalledDir:
>>> 
>>> 
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
>>> /usr/metal/ios/bin
>>> 
>> 
>> I am able to get the ios binary too, but only when I request is explicitly
>> as follows:
>> 
>> $ xcrun -sdk $(xcodebuild -sdk iphoneos -version Path) metal -v
>> 
>> Apple metal version 31001.325 (metalfe-31001.325)
>> Target: air64-apple-darwin20.6.0
>> Thread model: posix
>> InstalledDir:
>> 
>> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/metal/ios/bin
>> 
>> 
> 
> Running `xcrun -sdk $(xcodebuild -sdk macosx -version Path) metal
> libavfilter/metal/vf_yadif_videotoolbox.metal -o
> libavfilter/metal/vf_yadif_videotoolbox.metal.air` does indeed compile
> properly and properly shows macos
> 
> xcrun -sdk $(xcodebuild -sdk macosx -version Path) metal -v
> Apple LLVM version 31001.143 (metalfe-31001.143)
> Target: air64-apple-darwin19.6.0
> Thread model: posix
> InstalledDir:
> /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/metal/macos/bin
> 
> and I can indeed have FFmpeg configure and make with `./configure
> --metalcc="xcrun -sdk $(xcodebuild -sdk macosx -version Path) metal"`, but
> that would sorta ruin the whole idea of being able to simply clone and
> ./configure and make.
> 
> I tried looking online, and I guess maybe it's not something often asked as
> I could not find relevant results to how to set the default xcrun sdk, so
> I'm not sure how to make that -sdk flag apply to all xcruns regardless of
> configure flags
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