Jamie Madill 41184c21df Add support for building Mesa + Zink. ... Uses a conditional gclient variable "angle_mesa". You must set this to True in your .gclient to download and configure Mesa. After that you must also set angle_build_mesa=true in your GN args. We call through to meson in order to setup and build. Mesa sources and targets are written into an auto-generated GNI file. We must update this file on the same cadence as Mesa rolls. Because the version of libdrm we use in our sysroot is older than Mesa requires, this CL also includes a custom libdrm build. Also in order to run bison and flex on the old sysroot that Chrome infra runs with, this CL includes a new version of flex and bison that run without newer versions of GLIBC. Bug: angleproject:7689 Change-Id: I1aeeda1e6f3cf1d5f878aeab5209afa7e1fb5324 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3933062 Reviewed-by: Cody Northrop <cnorthrop@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>		2022-10-27 16:19:10 +00:00
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bison.sha1	Add support for building Mesa + Zink.	2022-10-27 16:19:10 +00:00
flex.sha1	Add support for building Mesa + Zink.	2022-10-27 16:19:10 +00:00