https://bugs.freedesktop.org/show_bug.cgi?id=111077
--- Comment #8 from Matt Turner mattst88@gmail.com --- (In reply to roland@rptd.ch from comment #4)
I tried compiling from source but it does not work. Seems to have troubles with libdrm.
configure: error: Package requirements (libdrm >= 2.4.75 libdrm_intel >= 2.4.75) were not met:
Can't seem to get past this one.
You must be building with more things enabled than your system Mesa is built with.
Run
ebuild /path/to/mesa-19.0.8.ebuild configure clean
and copy the line that it uses to configure with meson. Use that in your build that you're using to bisect.
Alternatively, add "intel" to your VIDEO_CARDS setting and rebuild libdrm.