build-wheels.sh

#!/bin/bash

#(derived from https://github.com/RalfG/python-wheels-manylinux-build/)

# This script should not be run directly but is run inside manylinux containers
# Use 'make wheels' instead

set -e -x

# CLI arguments
PY_VERSIONS=$1
BUILD_REQUIREMENTS=$2
SYSTEM_PACKAGES=$3
PRE_BUILD_COMMAND=$4
PACKAGE_PATH=$5
PIP_WHEEL_ARGS=$6

# Temporary workaround for LD_LIBRARY_PATH issue. See
# https://github.com/RalfG/python-wheels-manylinux-build/issues/26
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/usr/local/lib

cd /io/

if [ -n "$SYSTEM_PACKAGES" ]; then
    if command -v apt-get >/dev/null; then
        apt-get update
        apt-get install -y $SYSTEM_PACKAGES  || { echo "Installing apt package(s) failed."; exit 1; }
    elif command -v yum >/dev/null; then
        yum install -y $SYSTEM_PACKAGES  || { echo "Installing yum package(s) failed."; exit 1; }
    elif command -v apk >/dev/null; then
        apk add $SYSTEM_PACKAGES rsync || { echo "Installing apk package(s) failed."; exit 1; }
        rsync -av --ignore-existing /usr/share/aclocal/*.m4 /usr/local/share/aclocal/ #the image has it's own aclocal installation, copy autoconf-archive files that do not exist yet (and hope for the best)
    else
        echo "Package managers apt or yum not found."; exit 1;
    fi
fi

mkdir -p /tmp/work
cd /tmp/work
if [ -n "$PRE_BUILD_COMMAND" ]; then
    eval $PRE_BUILD_COMMAND || { echo "Pre-build command failed."; exit 1; }
fi
rm -rf /tmp/work
cd /io

# Compile wheels
arrPY_VERSIONS=(${PY_VERSIONS// / })
for PY_VER in "${arrPY_VERSIONS[@]}"; do
    # Update pip
    "/opt/python/$PY_VER/bin/pip" install --upgrade --no-cache-dir pip

    # Check if requirements were passed
    if [ -n "$BUILD_REQUIREMENTS" ]; then
        /opt/python/"$PY_VER"/bin/pip install --no-cache-dir $BUILD_REQUIREMENTS || { echo "Installing requirements failed."; exit 1; }
    fi

    # Build wheels
    "/opt/python/$PY_VER/bin/pip" wheel . $PIP_WHEEL_ARGS || { echo "Building wheels failed."; exit 1; }
done

# Bundle external shared libraries into the wheels
# find -exec does not preserve failed exit codes, so use an output file for failures
failed_wheels=$PWD/failed-wheels
rm -f "$failed_wheels"
find . -type f -iname "*-linux*.whl" -exec sh -c "auditwheel repair '{}' -w \$(dirname '{}') --plat '${PLAT}' || { echo 'Repairing wheels failed.'; auditwheel show '{}' >> "$failed_wheels"; }" \;

if [[ -f "$failed_wheels" ]]; then
    echo "Repairing wheels failed:"
    cat failed-wheels
    exit 1
fi

echo "Succesfully build wheels:"
if command -v apk >/dev/null; then
    find . -type f -iname "*-musllinux*.whl"
else
    find . -type f -iname "*-manylinux*.whl"
fi