[gentoo-user] Cannot compile firefox::rapid with +lto +pgo

[efeizbudak]

I am on a musl system and I cannot compile www-client/firefox-128.0.3 
with +lto +pgo flags. The compilation runs fine otherwise. Can anyone 
point me in the right direction?

Here are the logs:
build.log: http://0x0.st/XVSx.txt
emerge --info: https://paste.gentoo.zip/hSkfCD7R
emerge -pqv: https://paste.gentoo.zip/WOeQw5hA