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gentoo-overlay/eclass/distutils-r1.eclass

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# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/distutils-r1.eclass,v 1.38 2013/01/05 10:02:44 mgorny Exp $
# @ECLASS: distutils-r1
# @MAINTAINER:
# Python team <python@gentoo.org>
# @AUTHOR:
# Author: Michał Górny <mgorny@gentoo.org>
# Based on the work of: Krzysztof Pawlik <nelchael@gentoo.org>
# @BLURB: A simple eclass to build Python packages using distutils.
# @DESCRIPTION:
# A simple eclass providing functions to build Python packages using
# the distutils build system. It exports phase functions for all
# the src_* phases. Each of the phases runs two pseudo-phases:
# python_..._all() (e.g. python_prepare_all()) once in ${S}, then
# python_...() (e.g. python_prepare()) for each implementation
# (see: python_foreach_impl() in python-r1).
#
# In distutils-r1_src_prepare(), the 'all' function is run before
# per-implementation ones (because it creates the implementations),
# per-implementation functions are run in a random order.
#
# In remaining phase functions, the per-implementation functions are run
# before the 'all' one, and they are ordered from the least to the most
# preferred implementation (so that 'better' files overwrite 'worse'
# ones).
#
# If the ebuild doesn't specify a particular pseudo-phase function,
# the default one will be used (distutils-r1_...). Defaults are provided
# for all per-implementation pseudo-phases, python_prepare_all()
# and python_install_all(); whenever writing your own pseudo-phase
# functions, you should consider calling the defaults (and especially
# distutils-r1_python_prepare_all).
#
# Please note that distutils-r1 sets RDEPEND and DEPEND unconditionally
# for you.
#
# Also, please note that distutils-r1 will always inherit python-r1
# as well. Thus, all the variables defined and documented there are
# relevant to the packages using distutils-r1.
#
# For more information, please see the python-r1 Developer's Guide:
# http://www.gentoo.org/proj/en/Python/python-r1/dev-guide.xml
case "${EAPI:-0}" in
0|1|2|3)
die "Unsupported EAPI=${EAPI:-0} (too old) for ${ECLASS}"
;;
4|5)
;;
*)
die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
;;
esac
if [[ ! ${_DISTUTILS_R1} ]]; then
inherit eutils multiprocessing python-r1
fi
EXPORT_FUNCTIONS src_prepare src_configure src_compile src_test src_install
if [[ ! ${_DISTUTILS_R1} ]]; then
RDEPEND=${PYTHON_DEPS}
DEPEND=${PYTHON_DEPS}
# @ECLASS-VARIABLE: DISTUTILS_JOBS
# @DEFAULT_UNSET
# @DECRIPTION:
# The number of parallel jobs to run for distutils-r1 parallel builds.
# If unset, the job-count in ${MAKEOPTS} will be used.
#
# This variable is intended to be set in make.conf.
# @ECLASS-VARIABLE: PATCHES
# @DEFAULT_UNSET
# @DESCRIPTION:
# An array containing patches to be applied to the sources before
# copying them.
#
# If unset, no custom patches will be applied.
#
# Please note, however, that at some point the eclass may apply
# additional distutils patches/quirks independently of this variable.
#
# Example:
# @CODE
# PATCHES=( "${FILESDIR}"/${P}-make-gentoo-happy.patch )
# @CODE
# @ECLASS-VARIABLE: DOCS
# @DEFAULT_UNSET
# @DESCRIPTION:
# An array containing documents installed using dodoc. The files listed
# there must exist in the directory from which
# distutils-r1_python_install_all() is run (${S} by default).
#
# If unset, the function will instead look up files matching default
# filename pattern list (from the Package Manager Specification),
# and install those found.
#
# Example:
# @CODE
# DOCS=( NEWS README )
# @CODE
# @ECLASS-VARIABLE: HTML_DOCS
# @DEFAULT_UNSET
# @DESCRIPTION:
# An array containing documents installed using dohtml. The files
# and directories listed there must exist in the directory from which
# distutils-r1_python_install_all() is run (${S} by default).
#
# If unset, no HTML docs will be installed.
#
# Example:
# @CODE
# HTML_DOCS=( doc/html/ )
# @CODE
# @ECLASS-VARIABLE: DISTUTILS_IN_SOURCE_BUILD
# @DEFAULT_UNSET
# @DESCRIPTION:
# If set to a non-null value, in-source builds will be enabled.
# If unset, the default is to use in-source builds when python_prepare()
# is declared, and out-of-source builds otherwise.
#
# If in-source builds are used, the eclass will create a copy of package
# sources for each Python implementation in python_prepare_all(),
# and work on that copy afterwards.
#
# If out-of-source builds are used, the eclass will instead work
# on the sources directly, prepending setup.py arguments with
# 'build --build-base ${BUILD_DIR}' to enforce keeping & using built
# files in the specific root.
# @ECLASS-VARIABLE: DISTUTILS_NO_PARALLEL_BUILD
# @DEFAULT_UNSET
# @DESCRIPTION:
# If set to a non-null value, the parallel build feature will
# be disabled.
#
# When parallel builds are used, the implementation-specific sub-phases
# for selected Python implementation will be run in parallel. This will
# increase build efficiency with distutils which does not do parallel
# builds.
#
# This variable can be used to disable the afore-mentioned feature
# in case it causes issues with the package.
# @ECLASS-VARIABLE: mydistutilsargs
# @DEFAULT_UNSET
# @DESCRIPTION:
# An array containing options to be passed to setup.py.
#
# Example:
# @CODE
# python_configure_all() {
# mydistutilsargs=( --enable-my-hidden-option )
# }
# @CODE
# @FUNCTION: esetup.py
# @USAGE: [<args>...]
# @DESCRIPTION:
# Run the setup.py using currently selected Python interpreter
# (if ${PYTHON} is set; fallback 'python' otherwise). The setup.py will
# be passed default command-line arguments, then ${mydistutilsargs[@]},
# then any parameters passed to this command.
#
# This command dies on failure.
esetup.py() {
debug-print-function ${FUNCNAME} "${@}"
local args=()
if [[ ! ${DISTUTILS_IN_SOURCE_BUILD} ]]; then
if [[ ! ${BUILD_DIR} ]]; then
die 'Out-of-source build requested, yet BUILD_DIR unset.'
fi
args+=(
build
--build-base "${BUILD_DIR}"
# using a single directory for them helps us export ${PYTHONPATH}
--build-lib "${BUILD_DIR}/lib"
# make the ebuild writer lives easier
--build-scripts "${BUILD_DIR}/scripts"
)
fi
set -- "${PYTHON:-python}" setup.py \
"${args[@]}" "${mydistutilsargs[@]}" "${@}"
echo "${@}" >&2
"${@}" || die
}
# @FUNCTION: distutils-r1_python_prepare_all
# @DESCRIPTION:
# The default python_prepare_all(). It applies the patches from PATCHES
# array, then user patches and finally calls python_copy_sources to
# create copies of resulting sources for each Python implementation.
#
# At some point in the future, it may also apply eclass-specific
# distutils patches and/or quirks.
distutils-r1_python_prepare_all() {
debug-print-function ${FUNCNAME} "${@}"
[[ ${PATCHES} ]] && epatch "${PATCHES[@]}"
epatch_user
# by default, use in-source build if python_prepare() is used
if [[ ! ${DISTUTILS_IN_SOURCE_BUILD+1} ]]; then
if declare -f python_prepare >/dev/null; then
DISTUTILS_IN_SOURCE_BUILD=1
fi
fi
if [[ ${DISTUTILS_IN_SOURCE_BUILD} ]]; then
# create source copies for each implementation
python_copy_sources
fi
}
# @FUNCTION: distutils-r1_python_prepare
# @DESCRIPTION:
# The default python_prepare(). Currently it is a no-op
# but in the future it may apply implementation-specific quirks
# to the build system.
distutils-r1_python_prepare() {
debug-print-function ${FUNCNAME} "${@}"
:
}
# @FUNCTION: distutils-r1_python_configure
# @DESCRIPTION:
# The default python_configure(). Currently a no-op.
distutils-r1_python_configure() {
debug-print-function ${FUNCNAME} "${@}"
:
}
# @FUNCTION: distutils-r1_python_compile
# @USAGE: [additional-args...]
# @DESCRIPTION:
# The default python_compile(). Runs 'esetup.py build'. Any parameters
# passed to this function will be passed to setup.py.
distutils-r1_python_compile() {
debug-print-function ${FUNCNAME} "${@}"
esetup.py build "${@}"
}
# @FUNCTION: distutils-r1_python_test
# @DESCRIPTION:
# The default python_test(). Currently a no-op.
distutils-r1_python_test() {
debug-print-function ${FUNCNAME} "${@}"
:
}
# @FUNCTION: _distutils-r1_rename_scripts
# @USAGE: <path>
# @INTERNAL
# @DESCRIPTION:
# Renames installed Python scripts to be implementation-suffixed.
# ${EPYTHON} needs to be set to the implementation name.
#
# All executable scripts having shebang referencing ${EPYTHON}
# in given path will be renamed.
_distutils-r1_rename_scripts() {
debug-print-function ${FUNCNAME} "${@}"
local path=${1}
[[ ${path} ]] || die "${FUNCNAME}: no path given"
local f
while IFS= read -r -d '' f; do
debug-print "${FUNCNAME}: found executable at ${f#${D}/}"
if [[ "$(head -n 1 "${f}")" == '#!'*${EPYTHON}* ]]
then
debug-print "${FUNCNAME}: matching shebang: $(head -n 1 "${f}")"
local newf=${f}-${EPYTHON}
debug-print "${FUNCNAME}: renaming to ${newf#${D}/}"
mv "${f}" "${newf}" || die
debug-print "${FUNCNAME}: installing wrapper at ${f#${D}/}"
_python_ln_rel "${path}${EPREFIX}"/usr/bin/python-exec "${f}" || die
fi
done < <(find "${path}" -type f -executable -print0)
}
# @FUNCTION: distutils-r1_python_install
# @USAGE: [additional-args...]
# @DESCRIPTION:
# The default python_install(). Runs 'esetup.py install', appending
# the optimization flags. Then renames the installed scripts.
# Any parameters passed to this function will be passed to setup.py.
distutils-r1_python_install() {
debug-print-function ${FUNCNAME} "${@}"
local flags
case "${EPYTHON}" in
jython*)
flags=(--compile);;
*)
flags=(--compile -O2);;
esac
debug-print "${FUNCNAME}: [${EPYTHON}] flags: ${flags}"
# enable compilation for the install phase.
local PYTHONDONTWRITEBYTECODE
export PYTHONDONTWRITEBYTECODE
# python likes to compile any module it sees, which triggers sandbox
# failures if some packages haven't compiled their modules yet.
addpredict "$(python_get_sitedir)"
addpredict /usr/lib/portage/pym
local root=${D}/_${EPYTHON}
esetup.py install "${flags[@]}" --root="${root}" "${@}"
_distutils-r1_rename_scripts "${root}"
# merge
cp -a -l -n "${root}"/* "${D}"/ || die "Merging ${EPYTHON} image failed."
rm -rf "${root}"
}
# @FUNCTION: distutils-r1_python_install_all
# @DESCRIPTION:
# The default python_install_all(). It installs the documentation.
distutils-r1_python_install_all() {
debug-print-function ${FUNCNAME} "${@}"
if declare -p DOCS &>/dev/null; then
dodoc "${DOCS[@]}" || die "dodoc failed"
else
local f
# same list as in PMS
for f in README* ChangeLog AUTHORS NEWS TODO CHANGES \
THANKS BUGS FAQ CREDITS CHANGELOG; do
if [[ -s ${f} ]]; then
dodoc "${f}" || die "(default) dodoc ${f} failed"
fi
done
fi
if declare -p HTML_DOCS &>/dev/null; then
dohtml -r "${HTML_DOCS[@]}" || die "dohtml failed"
fi
}
# @FUNCTION: distutils-r1_run_phase
# @USAGE: [<argv>...]
# @INTERNAL
# @DESCRIPTION:
# Run the given command.
#
# If out-of-source builds are used, the phase function is run in source
# directory, with BUILD_DIR pointing at the build directory
# and PYTHONPATH having an entry for the module build directory.
#
# If in-source builds are used, the command is executed in the BUILD_DIR
# (the directory holding per-implementation copy of sources).
distutils-r1_run_phase() {
debug-print-function ${FUNCNAME} "${@}"
if [[ ${DISTUTILS_IN_SOURCE_BUILD} ]]; then
pushd "${BUILD_DIR}" &>/dev/null || die
else
local PYTHONPATH="${BUILD_DIR}/lib:${PYTHONPATH}"
export PYTHONPATH
fi
local TMPDIR=${T}/${EPYTHON}
mkdir -p "${TMPDIR}" || die
if [[ ${DISTUTILS_NO_PARALLEL_BUILD} ]]; then
"${@}" 2>&1 | tee -a "${T}/build-${EPYTHON}.log"
else
(
multijob_child_init
"${@}" 2>&1 | tee -a "${T}/build-${EPYTHON}.log"
) &
multijob_post_fork
fi
if [[ ${DISTUTILS_IN_SOURCE_BUILD} ]]; then
popd &>/dev/null || die
fi
# Store them for reuse.
_DISTUTILS_BEST_IMPL=(
"${EPYTHON}" "${PYTHON}" "${BUILD_DIR}" "${PYTHONPATH}"
)
}
# @FUNCTION: _distutils-r1_run_common_phase
# @USAGE: [<argv>...]
# @INTERNAL
# @DESCRIPTION:
# Run the given command, restoring the best-implementation state.
_distutils-r1_run_common_phase() {
local EPYTHON=${_DISTUTILS_BEST_IMPL[0]}
local PYTHON=${_DISTUTILS_BEST_IMPL[1]}
local BEST_BUILD_DIR=${_DISTUTILS_BEST_IMPL[2]}
local PYTHONPATH=${_DISTUTILS_BEST_IMPL[3]}
export EPYTHON PYTHON PYTHONPATH
einfo "common: running ${1}"
"${@}"
}
# @FUNCTION: _distutils-r1_multijob_init
# @INTERNAL
# @DESCRIPTION:
# Init multijob, taking the job-count from ${DISTUTILS_JOBS}.
_distutils-r1_multijob_init() {
debug-print-function ${FUNCNAME} "${@}"
local opts
if [[ ${DISTUTILS_JOBS} ]]; then
opts=-j${DISTUTILS_JOBS}
else
opts=${MAKEOPTS}
fi
multijob_init "${opts}"
}
distutils-r1_src_prepare() {
debug-print-function ${FUNCNAME} "${@}"
# common preparations
if declare -f python_prepare_all >/dev/null; then
python_prepare_all
else
distutils-r1_python_prepare_all
fi
_distutils-r1_multijob_init
if declare -f python_prepare >/dev/null; then
python_foreach_impl distutils-r1_run_phase python_prepare
else
python_foreach_impl distutils-r1_run_phase distutils-r1_python_prepare
fi
multijob_finish
}
distutils-r1_src_configure() {
_distutils-r1_multijob_init
if declare -f python_configure >/dev/null; then
python_foreach_impl distutils-r1_run_phase python_configure
else
python_foreach_impl distutils-r1_run_phase distutils-r1_python_configure
fi
multijob_finish
if declare -f python_configure_all >/dev/null; then
_distutils-r1_run_common_phase python_configure_all
fi
}
distutils-r1_src_compile() {
debug-print-function ${FUNCNAME} "${@}"
_distutils-r1_multijob_init
if declare -f python_compile >/dev/null; then
python_foreach_impl distutils-r1_run_phase python_compile
else
python_foreach_impl distutils-r1_run_phase distutils-r1_python_compile
fi
multijob_finish
if declare -f python_compile_all >/dev/null; then
_distutils-r1_run_common_phase python_compile_all
fi
}
distutils-r1_src_test() {
debug-print-function ${FUNCNAME} "${@}"
_distutils-r1_multijob_init
if declare -f python_test >/dev/null; then
python_foreach_impl distutils-r1_run_phase python_test
else
python_foreach_impl distutils-r1_run_phase distutils-r1_python_test
fi
multijob_finish
if declare -f python_test_all >/dev/null; then
_distutils-r1_run_common_phase python_test_all
fi
}
distutils-r1_src_install() {
debug-print-function ${FUNCNAME} "${@}"
_distutils-r1_multijob_init
if declare -f python_install >/dev/null; then
python_foreach_impl distutils-r1_run_phase python_install
else
python_foreach_impl distutils-r1_run_phase distutils-r1_python_install
fi
multijob_finish
if declare -f python_install_all >/dev/null; then
_distutils-r1_run_common_phase python_install_all
else
_distutils-r1_run_common_phase distutils-r1_python_install_all
fi
}
_DISTUTILS_R1=1
fi