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400 lines
13 KiB
400 lines
13 KiB
# Copyright 1999-2012 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-x86/eclass/python-distutils-ng.eclass,v 1.2 2012/03/26 06:12:53 jlec Exp $
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# @ECLASS: python-distutils-ng
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# @MAINTAINER:
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# Python herd <python@gentoo.org>
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# @AUTHOR:
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# Author: Krzysztof Pawlik <nelchael@gentoo.org>
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# @BLURB: An eclass for installing Python packages using distutils with proper
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# support for multiple Python slots.
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# @DESCRIPTION:
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# The Python eclass is designed to allow an easier installation of Python
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# packages and their incorporation into the Gentoo Linux system.
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#
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# This eclass provides functions for following phases:
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# - src_prepare - you can define python_prepare_all function that will be run
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# before creating implementation-specific directory and python_prepare
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# function that will be run for each implementation
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# - src_configure - you can define python_configure function that will be run
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# for each implementation
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# - src_compile - you can define python_compile function that will be run for
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# each implementation, default function will run `setup.py build'
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# - src_test - you can define python_test function that will be run for each
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# implementation
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# - src_install - you can define python_install function that will be run for
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# each implementation and python_install_all that will be run in original
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# directory (so it wil lnot contain any implementation-specific files)
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# @ECLASS-VARIABLE: PYTHON_COMPAT
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# @DESCRIPTION:
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# This variable contains a space separated list of implementations (see above) a
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# package is compatible to. It must be set before the `inherit' call. The
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# default is to enable all implementations.
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if [[ -z "${PYTHON_COMPAT}" ]]; then
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# Default: pure python, support all implementations
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PYTHON_COMPAT=" python2_5 python2_6 python2_7"
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PYTHON_COMPAT+=" python3_1 python3_2"
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PYTHON_COMPAT+=" jython2_5"
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PYTHON_COMPAT+=" pypy1_7 pypy1_8"
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fi
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# @ECLASS-VARIABLE: PYTHON_OPTIONAL
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# @DESCRIPTION:
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# Set the value to "yes" to make the dependency on a Python interpreter
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# optional.
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# @ECLASS-VARIABLE: PYTHON_DISABLE_COMPILATION
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# @DESCRIPTION:
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# Set the value to "yes" to skip compilation and/or optimization of Python
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# modules.
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EXPORT_FUNCTIONS src_prepare src_configure src_compile src_test src_install
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case "${EAPI}" in
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0|1|2|3)
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die "Unsupported EAPI=${EAPI} (too old) for python-distutils-ng.eclass" ;;
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4)
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# EAPI=4 needed for REQUIRED_USE
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S="${S:-${WORKDIR}/${P}}"
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;;
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*)
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die "Unsupported EAPI=${EAPI} (unknown) for python-distutils-ng.eclass" ;;
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esac
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# @FUNCTION: _python-distutils-ng_generate_depend
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# @USAGE: implementation
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# @RETURN: Package atom of a Python implementation for *DEPEND.
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# @DESCRIPTION:
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# This function returns the full package atom of a Python implementation.
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#
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# `implementation' has to be one of the valid values for PYTHON_COMPAT.
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_python-distutils-ng_generate_depend() {
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local impl="${1/_/.}"
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case "${impl}" in
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python?.?)
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echo "dev-lang/${impl::-3}:${impl: -3}" ;;
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jython?.?)
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echo "dev-java/${impl::-3}:${impl: -3}" ;;
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pypy?.?)
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echo "dev-python/${impl::-3}:${impl: -3}" ;;
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*)
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die "Unsupported implementation: ${1}" ;;
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esac
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}
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# @FUNCTION: _python-distutils-ng_get_binary_for_implementation
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# @USAGE: implementation
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# @RETURN: Full path to Python binary for given implementation.
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# @DESCRIPTION:
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# This function returns full path for Python binary for given implementation.
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#
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# Binary returned by this function should be used instead of simply calling
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# `python'.
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_python-distutils-ng_get_binary_for_implementation() {
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local impl="${1/_/.}"
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case "${impl}" in
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python?.?|jython?.?)
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echo "/usr/bin/${impl}" ;;
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pypy?.?)
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echo "/usr/bin/pypy-c${impl: -3}" ;;
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*)
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die "Unsupported implementation: ${1}" ;;
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esac
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}
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required_use_str=" || (
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python_targets_python2_5 python_targets_python2_6 python_targets_python2_7
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python_targets_python3_1 python_targets_python3_2
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python_targets_jython2_5
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python_targets_pypy1_7 python_targets_pypy1_8 )"
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if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
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IUSE+="python"
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REQUIRED_USE+=" python? ( ${required_use_str} )"
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else
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REQUIRED_USE+=" ${required_use_str}"
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fi
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for impl in ${PYTHON_COMPAT}; do
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IUSE+=" python_targets_${impl} "
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local dep_str="python_targets_${impl}? ( $(_python-distutils-ng_generate_depend "${impl}") )"
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if [[ "${PYTHON_OPTIONAL}" = "yes" ]]; then
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RDEPEND="${RDEPEND} python? ( ${dep_str} )"
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DEPEND="${DEPEND} python? ( ${dep_str} )"
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else
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RDEPEND="${RDEPEND} ${dep_str}"
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DEPEND="${DEPEND} ${dep_str}"
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fi
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done
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_PACKAGE_SPECIFIC_S="${S#${WORKDIR}/}"
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# @FUNCTION: _python-distutils-ng_run_for_impl
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# @USAGE: implementation command_to_run
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# @DESCRIPTION:
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# Run command_to_run using specified Python implementation.
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#
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# This will run the command_to_run in implementation-specific working directory.
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_python-distutils-ng_run_for_impl() {
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local impl="${1}"
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local command="${2}"
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S="${WORKDIR}/impl_${impl}/${_PACKAGE_SPECIFIC_S}"
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PYTHON="$(_python-distutils-ng_get_binary_for_implementation "${impl}")"
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EPYTHON="${impl/_/.}"
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einfo "Running ${command} in ${S} for ${impl}"
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pushd "${S}" &> /dev/null
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"${command}" "${impl}" "${PYTHON}"
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popd &> /dev/null
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}
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# @FUNCTION: _python-distutils-ng_run_for_each_impl
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# @USAGE: command_to_run
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# @DESCRIPTION:
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# Run command_to_run for all enabled Python implementations.
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#
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# See also _python-distutils-ng_run_for_impl
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_python-distutils-ng_run_for_each_impl() {
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local command="${1}"
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for impl in ${PYTHON_COMPAT}; do
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use "python_targets_${impl}" ${PYTHON_COMPAT} || continue
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_python-distutils-ng_run_for_impl "${impl}" "${command}"
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done
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}
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# @FUNCTION: _python-distutils-ng_default_distutils_compile
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# @DESCRIPTION:
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# Default src_compile for distutils-based packages.
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_python-distutils-ng_default_distutils_compile() {
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"${PYTHON}" setup.py build || die
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}
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# @FUNCTION: _python-distutils-ng_default_distutils_install
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# @DESCRIPTION:
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# Default src_install for distutils-based packages.
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_python-distutils-ng_default_distutils_install() {
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"${PYTHON}" setup.py install --no-compile --root="${D}/" || die
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}
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# @FUNCTION: _python-distutils-ng_has_compileall
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# @USAGE: implementation
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# @RETURN: 0 if given implementation has compileall module
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# @DESCRIPTION:
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# This function is used to decide whenever to compile Python modules for given
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# implementation.
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_python-distutils-ng_has_compileall() {
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case "${1}" in
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python?_?|jython?_?)
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return 0 ;;
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*)
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return 1 ;;
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esac
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}
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# @FUNCTION: _python-distutils-ng_has_compileall_opt
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# @USAGE: implementation
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# @RETURN: 0 if given implementation has compileall module and supports # optimizations
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# @DESCRIPTION:
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# This function is used to decide whenever to compile and optimize Python
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# modules for given implementation.
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_python-distutils-ng_has_compileall_opt() {
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case "${1}" in
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python?_?)
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return 0 ;;
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*)
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return 1 ;;
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esac
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}
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# @FUNCTION: python-distutils-ng_doscript
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# @USAGE: script_file_name [destination_directory]
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# @DESCRIPTION:
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# Install given script file in destination directory (for default value check
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# python-distutils-ng_newscript) for all enabled implementations using original
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# script name as a base name.
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#
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# See also python-distutils-ng_newscript for more details.
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python-distutils-ng_doscript() {
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python-distutils-ng_newscript "${1}" "$(basename "${1}")" "${2}"
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}
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# @FUNCTION: python-distutils-ng_newscript
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# @USAGE: script_file_name new_file_name [destination_directory]
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# @DESCRIPTION:
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# Install given script file in destination directory for all enabled
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# implementations using new_file_name as a base name.
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#
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# Destination directory defaults to /usr/bin.
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#
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# If only one Python implementation is enabled the script will be installed
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# as-is. Otherwise each script copy will have the name mangled to
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# "new_file_name-IMPLEMENTATION". For every installed script new hash-bang line
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# will be inserted to reference specific Python interpreter.
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#
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# In case of multiple implementations there will be also a symlink with name
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# equal to new_file_name that will be a symlink to default implementation, which
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# defaults to value of PYTHON_DEFAULT_IMPLEMENTATION, if not specified the
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# function will pick default implementation: it will the be first enabled one
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# from the following list:
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# python2_7, python2_6, python2_5, python3_2, python3_1, pypy1_8, pypy1_7, jython2_5
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python-distutils-ng_newscript() {
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[[ -n "${1}" ]] || die "Missing source file name"
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[[ -n "${2}" ]] || die "Missing destination file name"
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local source_file="${1}"
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local destination_file="${2}"
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local default_impl="${PYTHON_DEFAULT_IMPLEMENTATION}"
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local enabled_impls=0
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local destination_directory="/usr/bin"
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[[ -n "${3}" ]] && destination_directory="${3}"
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for impl in ${PYTHON_COMPAT}; do
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use "python_targets_${impl}" || continue
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enabled_impls=$((enabled_impls + 1))
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done
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if [[ -z "${default_impl}" ]]; then
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for impl in python{2_7,2_6,2_5,3_2,3_1} pypy{1_8,1_7} jython2_5; do
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use "python_targets_${impl}" || continue
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default_impl="${impl}"
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break
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done
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else
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use "python_targets_${impl}" || \
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die "default implementation ${default_impl} not enabled"
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fi
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[[ -n "${default_impl}" ]] || die "Could not select default implementation"
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dodir "${destination_directory}"
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insinto "${destination_directory}"
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if [[ "${enabled_impls}" = "1" ]]; then
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einfo "Installing ${source_file} for single implementation (${default_impl}) in ${destination_directory}"
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newins "${source_file}" "${destination_file}"
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fperms 755 "${destination_directory}/${destination_file}"
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sed -i \
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-e "1i#!$(_python-distutils-ng_get_binary_for_implementation "${impl}")" \
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"${D}${destination_directory}/${destination_file}" || die
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else
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einfo "Installing ${source_file} for multiple implementations (default: ${default_impl}) in ${destination_directory}"
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for impl in ${PYTHON_COMPAT}; do
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use "python_targets_${impl}" ${PYTHON_COMPAT} || continue
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newins "${source_file}" "${destination_file}-${impl}"
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fperms 755 "${destination_directory}/${destination_file}-${impl}"
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sed -i \
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-e "1i#!$(_python-distutils-ng_get_binary_for_implementation "${impl}")" \
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"${D}${destination_directory}/${destination_file}-${impl}" || die
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done
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dosym "${destination_file}-${default_impl}" "${destination_directory}/${destination_file}"
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fi
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}
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# Phase function: src_prepare
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python-distutils-ng_src_prepare() {
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[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
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# Try to run binary for each implementation:
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for impl in ${PYTHON_COMPAT}; do
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use "python_targets_${impl}" ${PYTHON_COMPAT} || continue
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$(_python-distutils-ng_get_binary_for_implementation "${impl}") \
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-c "import sys" || die
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done
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# Run prepare shared by all implementations:
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if type python_prepare_all &> /dev/null; then
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einfo "Running python_prepare_all in ${S} for all"
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python_prepare_all
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fi
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# Create a copy of S for each implementation:
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for impl in ${PYTHON_COMPAT}; do
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use "python_targets_${impl}" ${PYTHON_COMPAT} || continue
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einfo "Creating copy for ${impl} in ${WORKDIR}/impl_${impl}"
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mkdir -p "${WORKDIR}/impl_${impl}" || die
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cp -pr "${S}" "${WORKDIR}/impl_${impl}/${_PACKAGE_SPECIFIC_S}" || die
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done
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# Run python_prepare for each implementation:
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if type python_prepare &> /dev/null; then
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_python-distutils-ng_run_for_each_impl python_prepare
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fi
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}
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# Phase function: src_configure
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python-distutils-ng_src_configure() {
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[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
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if type python_configure &> /dev/null; then
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_python-distutils-ng_run_for_each_impl python_configure
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fi
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}
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# Phase function: src_compile
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python-distutils-ng_src_compile() {
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[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
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if type python_compile &> /dev/null; then
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_python-distutils-ng_run_for_each_impl python_compile
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else
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_python-distutils-ng_run_for_each_impl \
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_python-distutils-ng_default_distutils_compile
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fi
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}
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# Phase function: src_test
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python-distutils-ng_src_test() {
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[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
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if type python_test &> /dev/null; then
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_python-distutils-ng_run_for_each_impl python_test
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fi
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}
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# Phase function: src_install
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python-distutils-ng_src_install() {
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[[ "${PYTHON_OPTIONAL}" = "yes" ]] && { use python || return; }
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if type python_install &> /dev/null; then
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_python-distutils-ng_run_for_each_impl python_install
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else
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_python-distutils-ng_run_for_each_impl \
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_python-distutils-ng_default_distutils_install
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fi
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S="${WORKDIR}/${_PACKAGE_SPECIFIC_S}"
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if type python_install_all &> /dev/null; then
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einfo "Running python_install_all in ${S} for all"
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python_install_all
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fi
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for impl in ${PYTHON_COMPAT}; do
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[[ "${PYTHON_DISABLE_COMPILATION}" = "yes" ]] && continue
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use "python_targets_${impl}" ${PYTHON_COMPAT} || continue
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PYTHON="$(_python-distutils-ng_get_binary_for_implementation "${impl}")"
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for accessible_path in $(${PYTHON} -c 'import sys; print " ".join(sys.path)'); do
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[[ -d "${D}/${accessible_path}" ]] || continue
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_python-distutils-ng_has_compileall "${impl}" || continue
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ebegin "Compiling ${accessible_path} for ${impl}"
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${PYTHON} \
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-m compileall -q -f "${D}/${accessible_path}" || die
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eend $?
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_python-distutils-ng_has_compileall_opt "${impl}" || continue
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ebegin "Optimizing ${accessible_path} for ${impl}"
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PYTHONOPTIMIZE=1 ${PYTHON} \
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-m compileall -q -f "${D}/${accessible_path}" || die
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eend $?
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done;
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done
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}
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