perfetto compilation error

[feiliyc]

I ported Perfetto to the Yocto platform, but encountered the following error during compilation. I understand that Perfetto compilation requires CPU support for AVX/AVX2, but my CPU does not support this. Do you have any good solutions recommended? thank you.

=====================================================================================
--plugin_out=wrapper_namespace=gen:gen/ ../git/protos/perfetto/config/inode_file/inode_file_config.proto
| Traceback (most recent call last):
| File "../git/gn/standalone/protoc.py", line 60, in
| sys.exit(main())
| File "../git/gn/standalone/protoc.py", line 56, in main
| subprocess.check_call(sys.argv[1:])
| File "/usr/lib/python3.8/subprocess.py", line 364, in check_call
| raise CalledProcessError(retcode, cmd)
| subprocess.CalledProcessError: Command '['./gcc_like_host/protoc', '--proto_path', '../git/', '--plugin=protoc-gen-plugin=gcc_like_host/cppgen_plugin', '--plugin_out=wrapper_namespace=gen:gen/', '../git/protos/perfetto/config/inode_file/inode_file_config.proto']' died with <Signals.SIGILL: 4>.

[LalitMaganti]

We have a gn arg which lets you turn off AVX/AVX2 support in Perfetto. You just need to set the gn flag:

enable_perfetto_x64_cpu_opt = false

You can add this when you do tools/gn args <out directory>.

[LalitMaganti]

Please also see #916 and #883 for other issues with similar problems

[primiano]

On a side note, there is something not working with the CheckCpuOptimizations() check.
What was supposed to happen is that:

• cppgen_plugin depends on src/base (I checked this)
• src/base contains src/base/utils.cc which links in CheckCpuOptimizations
• CheckCpuOptimizations() should detect the lack of AVX instructions and print out a graceful message that says "Rebuild with enable_perfetto_x64_cpu_opt=false"

Something somewhere went wrong. I'll file an internal bug so we can look at this on the next fixit