Currently the GCC_OFFLINEASM_SOURCE_MAP feature is causing strange build failures. Looks like it's generating invalid assembler files. We thought we had a solution to this in bug #228267, but something is still wrong. Since this is a build failure, I'm just going to turn the feature off by default for now. Feel free to reenable as soon as it's fixed.
Created attachment 437311 [details] Patch for landing
Committed r282029 (241333@main): <https://commits.webkit.org/241333@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 437311 [details].