Pillow/depends/install_imagequant.sh

#!/bin/bash
# install libimagequant

archive_name=libimagequant
archive_version=4.2.2

archive=$archive_name-$archive_version

if [[ "$GHA_LIBIMAGEQUANT_CACHE_HIT" == "true" ]]; then

    # Copy cached files into place
    sudo cp ~/cache-$archive_name/libimagequant.so* /usr/lib/
    sudo cp ~/cache-$archive_name/libimagequant.h /usr/include/

else

    # Build from source
    ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz

    pushd $archive/imagequant-sys

    time cargo install cargo-c
    time cargo cinstall --prefix=/usr --destdir=.

    # Copy into place
    sudo cp usr/lib/libimagequant.so* /usr/lib/
    sudo cp usr/include/libimagequant.h /usr/include/

    # Copy to cache
    rm -rf ~/cache-$archive_name
    mkdir ~/cache-$archive_name
    cp usr/lib/libimagequant.so* ~/cache-$archive_name/
    cp usr/include/libimagequant.h ~/cache-$archive_name/

    popd

fi