update-amdgpu-dri-links.script

#!/bin/sh

# d92079d94c43be3c80dfdc3fc0221a71  libgl1-amdgpu-mesa-dri_18.3.0-812932_amd64.deb/postinst
# Converted for arch linux (hook script part):
create_links() {
    for f in /opt/amdgpu/lib/x86_64-linux-gnu/dri/*_dri.so; do
        ln -sb $f /usr/lib/dri
    done

    # Support I+A hybrid graphics
    if [ -f /usr/lib/dri/i965_dri.so ] ; then # there also was && [ "/usr/lib/dri" != "/opt/amdgpu/lib/x86_64-linux-gnu/dri" ] , but this will always be true due to they compare two strings.
        ln -s /usr/lib/dri/i965_dri.so /opt/amdgpu/lib/x86_64-linux-gnu/dri
    fi
}

remove_links() {
    rm -f /opt/amdgpu/lib/x86_64-linux-gnu/dri/i965_dri.so

    for f in $(readlink -e /usr/lib/dri/*.so); do
        if [ "${f%/*}" = "/opt/amdgpu/lib/x86_64-linux-gnu/dri" ]; then # I (Ashark) fixed ${f%%/*} -> ${f%/*}
            f=${f##*/}
            rm -f /usr/lib/dri/$f
            if [ -f /usr/lib/dri/$f~ ]; then
                mv -f /usr/lib/dri/$f{~,}
            fi
        fi
    done
}