radeonsi_dri.so is missing

[Ganesh3955]

Hi

i need to build radeonsi_dri.so in my T1040 board, can you help me to build this?

[yipingwang]

Yes — but first important point: radeonsi_dri.so is Mesa’s Gallium OpenGL DRI driver for AMD Radeon GPUs from Southern Islands (GCN/GFX6) and newer, so your T1040 itself is only the CPU/SoC; you will need a supported external AMD GPU attached (typically over PCIe) plus a working Linux DRM stack for that GPU. The T1040 is a 64-bit e5500 Power Architecture SoC and it does provide PCIe 2.0 controllers, so the platform can host an external GPU in principle. 

Also, radeonsi is built from Mesa’s src/gallium/drivers/radeonsi code, and Mesa’s Meson build system exposes gallium-drivers and dri-drivers-path options that are exactly what you need to produce/install a radeonsi DRI driver.

I suggest cross-build Mesa on an x86 Linux host rather than building natively on the board.

Step 1: Verify the board/GPU side first

lspci -nn | egrep 'VGA|Display|3D'

dmesg | egrep 'drm|amdgpu|radeon'

ls /dev/dri

``

Step 2: Prepare a cross toolchain

# t1040-ppc64be.ini

[binaries]

c = '/opt/t1040-sdk/bin/powerpc64-linux-gnu-gcc'

cpp = '/opt/t1040-sdk/bin/powerpc64-linux-gnu-g++'

ar = '/opt/t1040-sdk/bin/powerpc64-linux-gnu-gcc-ar'

strip = '/opt/t1040-sdk/bin/powerpc64-linux-gnu-strip'

pkg-config = '/opt/t1040-sdk/bin/powerpc64-linux-gnu-pkg-config'

# IMPORTANT: this is the host-side llvm-config that Meson uses to locate LLVM

llvm-config = '/usr/bin/llvm-config'

[host_machine]

system = 'linux'

cpu_family = 'ppc64'

cpu = 'powerpc64'

endian = 'big'

Step 3: Get a stable Mesa source tree

git clone https://gitlab.freedesktop.org/mesa/mesa.git

cd mesa

git checkout mesa-25.2.8

``

Step 4: Configure Mesa for radeonsi

eson setup build-t1040 \

  --cross-file t1040-ppc64be.ini \

  -Dprefix=/usr \

  -Dbuildtype=release \

  -Dplatforms=x11,drm,surfaceless \

  -Dglx=dri \

  -Degl=enabled \

  -Dgbm=enabled \

  -Dgallium-drivers=radeonsi,swrast \

  -Dvulkan-drivers=[] \

  -Dgallium-va=disabled \

  -Dgallium-vdpau=disabled \

  -Dgallium-omx=disabled \

  -Dvideo-codecs=[] \

  -Ddri-drivers-path=/usr/lib64/dri

``

Step 5: Build and install into a staging directory

eson compile -C build-t1040 -j$(nproc)

DESTDIR=$PWD/stage meson install -C build-t1040

You should typically end up with something like:

stage/usr/lib64/dri/radeonsi_dri.so

Step 6: Copy to the target

scp stage/usr/lib64/dri/radeonsi_dri.so root@<board-ip>:/usr/lib64/dri/

``

Step 7: Test on the T1040

export LD_LIBRARY_PATH=/usr/lib64:$LD_LIBRARY_PATH

export LIBGL_DRIVERS_PATH=/usr/lib64/dri

glxinfo -B

If you are using Yocto:

For an embedded T1040 project, the cleanest solution is usually not to manually copy one .so, but to enable mesa with radeonsi in your Yocto image/recipe, so the entire dependency chain stays version-aligned.