CPython build dependencies

Install CPython build and development dependencies on various distributions.

Usage

$ ./builddep.sh --help
builddeps.sh - Install CPython build dependencies

    -h --help     display this help and exit
    --extras      install extra development packages (gdb, ccache...)
    --update      update all packages
    --cleanup     cleanup package cache

Install build dependencies:

sudo ./builddep.sh

Also install extra dependencies and purge the package cache afterwards

sudo ./builddep.sh --extras --cleanup

Supported distros

• Alpine
• ArchLinux
• CentOS
• Debian
• Fedora
• RHEL
• Ubuntu

Note

CentOS 7 and RHEL 7 ship an unsupported OpenSSL version. CentOS 7's EPEL repository comes with openssl11 package. The package install files in non-standard locations and uses a custom pkgconf module name openssl11. You can patch Python's configure script to use the custom build:

sudo yum install -y epel
sudo yum install -y openssl11-devel

cd /path/to/cpython-sources
sed -i 's/PKG_CONFIG openssl /PKG_CONFIG openssl11 /g' configure

Unsupported or untested distributions

• FreeBSD
• Gentoo
• macOS brew
• SUSE

Build containers

Containers are hosted at https://quay.io/repository/tiran/cpythonbuild

• quay.io/tiran/cpythonbuild:alpine-3.13 (linux/amd64, linux/arm64, linux/s390x)
• quay.io/tiran/cpythonbuild:alpine-3.16 (linux/amd64, linux/arm/v7, linux/arm64/v8, linux/s390x, linux/ppc64le)
• quay.io/tiran/cpythonbuild:archlinux (linux/amd64)
• quay.io/tiran/cpythonbuild:centos-7 (linux/amd64, linux/arm64)
• quay.io/tiran/cpythonbuild:centos-stream8 (linux/amd64, linux/arm64, linux/ppc64le)
• quay.io/tiran/cpythonbuild:centos-stream9 (linux/amd64)
• quay.io/tiran/cpythonbuild:debian-bullseye (linux/amd64, linux/arm/v7, linux/arm64/v8, linux/s390x, linux/ppc64le, linux/mips64le)
• quay.io/tiran/cpythonbuild:debian-testing (linux/amd64, linux/arm64, linux/s390x)
• quay.io/tiran/cpythonbuild:fedora-35 (linux/amd64, linux/s390x)
• quay.io/tiran/cpythonbuild:fedora-36 (linux/amd64, linux/ppc64le, linux/arm64)
• quay.io/tiran/cpythonbuild:ubuntu-focal (linux/amd64, linux/arm64, linux/s390x)
• quay.io/tiran/cpythonbuild:ubuntu-jammy (linux/amd64, linux/arm64, linux/s390x)
• quay.io/tiran/cpythonbuild:emsdk3 (linux/amd64)

Usage

The default entry point of a build container runs configure -C, make clean, and parallel out-of-tree make in builddep/$tag. The default entry script also sets up CCACHE_DIR=/cpython/builddir/.ccache.

cd cpython

podman run -ti --rm -v $(pwd):/cpython:Z quay.io/tiran/cpythonbuild:fedora-35

docker run -ti --rm -v $(pwd):/cpython quay.io/tiran/cpythonbuild:fedora-35

Emulated archs

Needs qemu-user-static package and binfmt support. Emulation is rather slow.

podman run --platform linux/s390x -ti --rm -v .:/cpython:Z quay.io/tiran/cpythonbuild:fedora-35

WebAssembly build

The WebAssembly container image is based on latest Emscripten SDK 3 (emsdk), which is based on Ubuntu 20.04 LTS. It comes with all CPython build dependencies, Emscripten SDK, WASI SDK, wasmtime runtime, and python-wasm build scripts. zlib and bzip2 emports are pre-built.

podman run -ti --rm -v $(pwd):/python-wasm/cpython:Z quay.io/tiran/cpythonbuild:emsdk3

The emsdk3-mini is smaller and comes without WASI and additional build dependencies.

./build-python-build.sh
./build-python-emscripten-node.sh
./build-python-emscripten-browser.sh
./build-python-wasi.sh