mesa package build error

[mrkcee]

I am currently exploring cbuild on a Chimera system running on qemu aarch64. I tried building the mesa package but it always fails.

Here are the steps I did:

1. Clone cports repo (as of commit 22433cb)
2. cbuild keygen
3. cbuild binary-bootstrap
4. cbuild pkg main/mesa

Snippet of the error log on stdout:

[3687/3775] Linking target src/gallium/targets/dri/libgallium_dri.so
FAILED: src/gallium/targets/dri/libgallium_dri.so
clang++ .... <long arguments/parameters here>
clang++: error: unable to execute command: Killed
clang++: error: linker command failed due to signal (use -v to see invocation)
[3692/3775] Linking target src/intel/vulkan/libvulkan_intel.so
ninja: build stopped: subcommand failed.
=> A failure has occurred!
=> Stack trace:
=> <stack trace here>
=> Phase 'build' failed for package 'mesa'

What can be the cause of the failure? It looks like the latest successful build was just a few days ago.

[q66]

looks like you're running out of memory?

[mrkcee]

Ah that was it! Thank you!

[nekopsykose]

there's no jobserver integration between ninja/lld, so when you build a project that has a lot of huge links (like mesa), you end up with e.g. yournumberofthreads link jobs that each do yournumberofthreads thinlto threads in parallel... and for mesa that means with nproc=16 you need like 18gb of memory (roughly, from memory)

the only way to fix that is for ninja to start support being a jobserver (upstream has blocked that forever) and lld to use the jobserver tokens, or to at least limit links (#2028 which would work for meson in this case) though that's more of a bandaid