chromium clang error

[vishal bs]

I'm trying to compile an old webrtc media server on windows 10 VS2019  with chromium. Whenever I try to build my media server, it gives me the given error. 

To build chromium I'm using:

gn gen out/debug --sln=chrome --filters=//media/gpu/* --ide=vs2019 --no-deps --args="is_component_build = true is_debug = true is_clang=true enable_nacl=false"

And the Error when I build my webrtc server is:

Error C1189 #error: "Only clang-cl is supported on Windows, see https://crbug.com/988071"   Server  D:\projects\chromium-src\src\base\compiler_specific.h   13  

[Nico Weber]

The error is emitted if Visual Studio's compiler is used. Using it is not supported.

However, you do say "is_clang=true", so the build shouldn't be using Visual Studio's compiler. You need to figure out why it's getting used.

How old is "old"? I'm guessing your checkout is some strange state somehow.

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[vishal bs]

Thanks for your reply, Firstly let me explain what I'm up-to and how I'm doing it.

1) I have an old webrtc media server which was written for 2017 checkout of webrtc and chromium.

2) What my intention is I have the latest checkout of webrtc and chromium and I want make the same media server to work with these latest checkouts.

3) I have made the necessary changes to the old media-server such that all deprecated calls have been replaced with the current implementation.

4) Whenever I try to build my webrtc-media server I'm getting this error.

The command I'm using to build chromium is this 

gn gen out/debug --sln=chrome --filters=//media/gpu/* --ide=vs2019 --no-deps --args="is_component_build = true is_debug = true is_clang = true enable_nacl = false"

and

autoninja -C out/debug media/gpu

Is there anything wrong In this and I hope you got what is my goal.

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[Nico Weber]

Does your server use Chromium's new base/ code, but Chormium's old build/ files? If so, try updating the build/ folder.

But this seems off-topic for this list. Since you say the error happens while building webrtc code, maybe ask on some webrtc forum.

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[vishal bs]

Yes my server uses the new chromium codebase and webrtc new chromium codebase. As I didn't get any response in any other forum I thought of posting it here.

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[vishal bs]

I dono why this is happening can anyone suggest on how to link custom clang binary to my visual studio such that it compiles. I have installed LLVM clang but im not sure how to set visual studio 2019 to use clang.