unsupport macos sdk 11.3

[zebozhuang]

I try to build it on my Macos with the following error, it seems it does not support macos sdk 11.3, but I can not downgrade to 11.0.

DEBUG: yasm: Trying yasm
INFO: /usr/local/bin/yasm
INFO: checking yasm version...
DEBUG: Executing: /usr/local/bin/yasm --version
INFO: 1.3.0
DEBUG: Executing: xcrun --show-sdk-path
ERROR: SDK version "11.3" is unsupported. Please downgrade to version 11.0. You may need to point to it using --with-macos-sdk= in your mozconfig.

--- stderr
ERROR: SDK version "11.3" is unsupported. Please downgrade to version 11.0. You may need to point to it using --with-macos-sdk= in your mozconfig.
make: *** [maybe-configure] Error 1

[jdm]

You can work around this by cloning https://github.com/servo/mozjs/ and modifying https://github.com/servo/mozjs/blob/d0f33e89cf3881a8032dba6a109b4e42f1f1b690/mozjs/build/moz.configure/toolchain.configure#L155 to read 11.3, then patching mozjs_sys to use the local clone.

[adamcypher]

There's another work-around described here:
https://firefox-source-docs.mozilla.org/setup/macos_build.html#macos-sdk-is-unsupported

My question is, where should the mozconfig file be placed to specify the SDK path?
And setting the MOZCONFIG environment var to the location of the mozconfig does not work (?!)

[jdm]

The supported workaround for servo is setting the MACOS_SDK_PATH environment variable to point to a supported SDK: https://github.com/servo/mozjs/blob/ef986b1a2c23081fe4d37aeaab5323d3dec033f3/makefile.cargo#L14 . A supported one can be acquired from https://github.com/phracker/MacOSX-SDKs.

[PhotonQuantum]

I also encountered this issue when building servo today, and was guided to https://firefox-source-docs.mozilla.org/setup/macos_build.html#macos-sdk-is-unsupported incorrectly.

  --- stderr
  ERROR: SDK version "12.0" is unsupported. Please downgrade to version 11.1. See the manual SDK installation docs: https://firefox-source-docs.mozilla.org/setup/macos_build.html#macos-sdk-is-unsupported
  make: *** [maybe-configure] Error 1
  thread 'main' panicked at 'assertion failed: result.success()', /Users/lightquantum/.cargo/git/checkouts/mozjs-fa11ffc7d4f1cc2d/de147f0/build.rs:172:5

Is there any plan to update the build error message to avoid misunderstanding?

[jdm]

I've filed servo/mozjs#289 about that idea.