[Bug 107990] Got Dying Light working in Arch by changing Mesa's compile steps, how to get it working Out Of the Box?

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=107990

            Bug ID: 107990
           Summary: Got Dying Light working in Arch by changing Mesa's
                    compile steps, how to get it working Out Of the Box?
           Product: Mesa
           Version: 18.2
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: john.ettedgui@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Hello,

I've been looking for a while on how to get DL running on Arch and I finally
found it.

Now I'd like this to be possible by default, but I don't know if the issue lies
in Arch or Mesa and I'm hopeful someone here will be able to help.

Arch's default compiler flags are:

CFLAGS="-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
-fno-plt"
CXXFLAGS="-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
-fno-plt"
LDFLAGS="-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now"

"-fno-plt" in C/CXXFLAGS and ",-z,now" in LDFLAGS need to be unset when
compiling Mesa to get DL to not crash.

The other change required is to not use glvnd, with "-D glvnd=false". I tried
building libglvnd with the same flags as Mesa, or none at all, but it didn't
help.

Here's the original 18.2.0 PKGBUILD in case it helps:
https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/mesa

The behavior is the same with Mesa 18.2.0 or master, with LLVM 6.0 or master.
I haven't tried with autoconf though, only Meson, but I can try if you think
it'd be helpful.

I don't have any helpful log, as the game segfaults without these, a backtrace
in gdb doesn't show me anything useful, and there's nothing in dmesg.

I'm using a 280X but people with 5xx seem to have the same behavior, so I don't
think it depends on the model. We're all on amdgpu.

I'd be happy to try / provide whatever would help.

Current versions: Linux 4.18.8, GCC 8.2.1, glibc 2.28, but it failed in
previous ones too.

Thank you!

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