Building Mesa for VC4

If you're interested in hacking on the Mesa driver, you'll want to build your own copy of Mesa. And since Mesa is a system component and you won't want to break your desktop if you make a mistake, you will want to do it without replacing your system Mesa.

sudo apt-get build-dep libgl1-mesa-dri

sudo apt-get install \
    automake libtool \
    bison flex \
    gettext \
    libdrm-dev \
    libexpat1-dev \
    libudev-dev \
    libx11-xcb-dev \
    libxcb-dri3-dev \
    libxcb-dri2-0-dev \
    libxcb-glx0-dev \
    libxcb-xfixes0-dev \
    libxcb-present-dev \
    libxcb-sync-dev \
    libxshmfence-dev \
    libxdamage-dev \
    libxext-dev \
    libxfixes-dev \
    python-mako \
    x11proto-present-dev \
    x11proto-dri3-dev \
    x11proto-dri2-dev \
    x11proto-gl-dev

git clone git://anongit.freedesktop.org/mesa/mesa
cd mesa

./autogen.sh \
     --prefix=$HOME/prefix \
     --with-gallium-drivers=vc4 \
     --with-dri-drivers= \
     --with-egl-platforms=x11,drm

make install

Once you've installed your local copy, you can run an application with it by prefixing your command with the following script:

exec env \
    LD_LIBRARY_PATH=$HOME/prefix/lib \
    LIBGL_DRIVERS_PATH=$HOME/prefix/lib \
    GBM_DRIVERS_PATH=$HOME/prefix/lib \
    $@

Some developers go further and add $HOME/mesa/lib to these paths so that they can skip the make install step.