tce-load -i compiletc python3.8-meson libdrm-dev libva-dev wayland-dev wayland-protocols python3.8-mako libXvmc-dev libXdamage-dev libxshmfence-dev libXxf86vm-dev libXrandr-dev gettext libelf-dev llvm15-dev zstd-dev

wget https://archive.mesa3d.org//mesa-22.3.7.tar.xz
wget https://www.linuxfromscratch.org/patches/blfs/svn/mesa-22.3.6-add_xdemos-1.patch

cd mesa-22.3.7

sudo cp /tmp/tcloop/llvm15-dev/usr/local/bin/* /usr/local/bin

patch -Np1 -i ../mesa-22.3.6-add_xdemos-1.patch

mkdir build
cd build

CC="gcc -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe" CXX="g++ -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -DNDEBUG" meson --prefix=/usr/local --buildtype=plain -Dvalgrind=disabled -Dgallium-drivers="vc4,v3d,kmsro,virgl,swrast" -Dvulkan-drivers="broadcom,swrast" ../

[-fno-rtti fails]

ninja [15m 15.82s]
sudo ninja install

Message: Configuration summary:
        
        prefix:          /usr/local
        libdir:          lib
        includedir:      include
        
        OpenGL:          yes (ES1: yes ES2: yes)
        OSMesa:          no
        
        DRI platform:    drm
        DRI driver dir:  /usr/local/lib/dri
        
        GLX:             DRI-based
        
        EGL:             yes
        EGL drivers:     builtin:egl_dri2 builtin:egl_dri3
        EGL/Vulkan/VL platforms:   x11 wayland surfaceless drm xcb
        GBM:             yes
        GBM backends path: /usr/local/lib/gbm
        
        Video Codecs: 
        
        Vulkan drivers:  broadcom swrast
        Vulkan ICD dir:  share/vulkan/icd.d
        Vulkan Intel Ray Tracing:  no
        
        llvm:            yes
        llvm-version:    15.0.7
        
        Gallium drivers: vc4 v3d kmsro virgl swrast
        Gallium st:      mesa va
        HUD lmsensors:   no
        
        Shared-glapi:    yes
        
        Perfetto:        no
        Perfetto ds:     auto