kumquat-buildroot/package/pkg-python.mk
James Hilliard 7c1bb5c2bf package/pkg-python: set _PYTHON_PROJECT_BASE
This variable is supposed to be set when cross compiling and is
now required by setuptools to be set correctly after the latest
version bump.

Not much reference for that variable, exept for:
    https://github.com/python/cpython/blob/v3.10.2/Lib/sysconfig.py#L157-L159

Fixes:
http://autobuild.buildroot.net/results/2e8/2e8093e68d04e8cbb20b095068b24c8bbe5f69ad
http://autobuild.buildroot.net/results/9e3/9e3cfddb651a59d7f2d04bc88e6fff2a06e9b465

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2022-02-03 21:37:46 +01:00

301 lines
10 KiB
Makefile

################################################################################
# Python package infrastructure
#
# This file implements an infrastructure that eases development of
# package .mk files for Python packages. It should be used for all
# packages that use Python setup.py/setuptools as their build system.
#
# See the Buildroot documentation for details on the usage of this
# infrastructure
#
# In terms of implementation, this Python infrastructure requires the
# .mk file to only specify metadata information about the package:
# name, version, download URL, etc.
#
# We still allow the package .mk file to override what the different
# steps are doing, if needed. For example, if <PKG>_BUILD_CMDS is
# already defined, it is used as the list of commands to perform to
# build the package, instead of the default Python behaviour. The
# package can also define some post operation hooks.
#
################################################################################
# basename does not evaluate if a file exists, so we must check to ensure
# the _sysconfigdata__linux_*.py file exists. The "|| true" is added to return
# an empty string if the file does not exist.
PKG_PYTHON_SYSCONFIGDATA_PATH = $(PYTHON3_PATH)/_sysconfigdata__linux_*.py
PKG_PYTHON_SYSCONFIGDATA_NAME = `{ [ -e $(PKG_PYTHON_SYSCONFIGDATA_PATH) ] && basename $(PKG_PYTHON_SYSCONFIGDATA_PATH) .py; } || true`
# Target distutils-based packages
PKG_PYTHON_DISTUTILS_ENV = \
PATH=$(BR_PATH) \
$(TARGET_CONFIGURE_OPTS) \
LDSHARED="$(TARGET_CROSS)gcc -shared" \
PYTHONPATH="$(if $(BR2_PACKAGE_PYTHON3),$(PYTHON3_PATH),$(PYTHON_PATH))" \
PYTHONNOUSERSITE=1 \
_PYTHON_PROJECT_BASE="$(if $(BR2_PACKAGE_PYTHON3),$(PYTHON3_DIR),$(PYTHON_DIR))" \
_PYTHON_SYSCONFIGDATA_NAME="$(PKG_PYTHON_SYSCONFIGDATA_NAME)" \
_python_sysroot=$(STAGING_DIR) \
_python_prefix=/usr \
_python_exec_prefix=/usr
PKG_PYTHON_DISTUTILS_BUILD_OPTS = \
--executable=/usr/bin/python
PKG_PYTHON_DISTUTILS_INSTALL_TARGET_OPTS = \
--prefix=/usr \
--root=$(TARGET_DIR)
PKG_PYTHON_DISTUTILS_INSTALL_STAGING_OPTS = \
--prefix=/usr \
--root=$(STAGING_DIR)
# Host distutils-based packages
HOST_PKG_PYTHON_DISTUTILS_ENV = \
PATH=$(BR_PATH) \
PYTHONNOUSERSITE=1 \
$(HOST_CONFIGURE_OPTS)
HOST_PKG_PYTHON_DISTUTILS_INSTALL_OPTS = \
--prefix=$(HOST_DIR)
# Target setuptools-based packages
PKG_PYTHON_SETUPTOOLS_ENV = \
_PYTHON_PROJECT_BASE="$(if $(BR2_PACKAGE_PYTHON3),$(PYTHON3_DIR),$(PYTHON_DIR))" \
_PYTHON_SYSCONFIGDATA_NAME="$(PKG_PYTHON_SYSCONFIGDATA_NAME)" \
PATH=$(BR_PATH) \
$(TARGET_CONFIGURE_OPTS) \
PYTHONPATH="$(if $(BR2_PACKAGE_PYTHON3),$(PYTHON3_PATH),$(PYTHON_PATH))" \
PYTHONNOUSERSITE=1 \
_python_sysroot=$(STAGING_DIR) \
_python_prefix=/usr \
_python_exec_prefix=/usr
PKG_PYTHON_SETUPTOOLS_INSTALL_TARGET_OPTS = \
--prefix=/usr \
--executable=/usr/bin/python \
--single-version-externally-managed \
--root=$(TARGET_DIR)
PKG_PYTHON_SETUPTOOLS_INSTALL_STAGING_OPTS = \
--prefix=/usr \
--executable=/usr/bin/python \
--single-version-externally-managed \
--root=$(STAGING_DIR)
# Host setuptools-based packages
HOST_PKG_PYTHON_SETUPTOOLS_ENV = \
PATH=$(BR_PATH) \
PYTHONNOUSERSITE=1 \
$(HOST_CONFIGURE_OPTS)
HOST_PKG_PYTHON_SETUPTOOLS_INSTALL_OPTS = \
--prefix=$(HOST_DIR) \
--root=/ \
--single-version-externally-managed
################################################################################
# inner-python-package -- defines how the configuration, compilation
# and installation of a Python package should be done, implements a
# few hooks to tune the build process and calls the generic package
# infrastructure to generate the necessary make targets
#
# argument 1 is the lowercase package name
# argument 2 is the uppercase package name, including a HOST_ prefix
# for host packages
# argument 3 is the uppercase package name, without the HOST_ prefix
# for host packages
# argument 4 is the type (target or host)
################################################################################
define inner-python-package
ifndef $(2)_SETUP_TYPE
ifdef $(3)_SETUP_TYPE
$(2)_SETUP_TYPE = $$($(3)_SETUP_TYPE)
else
$$(error "$(2)_SETUP_TYPE must be set")
endif
endif
# Distutils
ifeq ($$($(2)_SETUP_TYPE),distutils)
ifeq ($(4),target)
$(2)_BASE_ENV = $$(PKG_PYTHON_DISTUTILS_ENV)
$(2)_BASE_BUILD_TGT = build
$(2)_BASE_BUILD_OPTS = $$(PKG_PYTHON_DISTUTILS_BUILD_OPTS)
$(2)_BASE_INSTALL_TARGET_OPTS = $$(PKG_PYTHON_DISTUTILS_INSTALL_TARGET_OPTS)
$(2)_BASE_INSTALL_STAGING_OPTS = $$(PKG_PYTHON_DISTUTILS_INSTALL_STAGING_OPTS)
else
$(2)_BASE_ENV = $$(HOST_PKG_PYTHON_DISTUTILS_ENV)
$(2)_BASE_BUILD_TGT = build
$(2)_BASE_INSTALL_OPTS = $$(HOST_PKG_PYTHON_DISTUTILS_INSTALL_OPTS)
endif
# Setuptools
else ifeq ($$($(2)_SETUP_TYPE),setuptools)
ifeq ($(4),target)
$(2)_BASE_ENV = $$(PKG_PYTHON_SETUPTOOLS_ENV)
$(2)_BASE_BUILD_TGT = build
$(2)_BASE_INSTALL_TARGET_OPTS = $$(PKG_PYTHON_SETUPTOOLS_INSTALL_TARGET_OPTS)
$(2)_BASE_INSTALL_STAGING_OPTS = $$(PKG_PYTHON_SETUPTOOLS_INSTALL_STAGING_OPTS)
else
$(2)_BASE_ENV = $$(HOST_PKG_PYTHON_SETUPTOOLS_ENV)
$(2)_BASE_BUILD_TGT = build
$(2)_BASE_INSTALL_OPTS = $$(HOST_PKG_PYTHON_SETUPTOOLS_INSTALL_OPTS)
endif
else
$$(error "Invalid $(2)_SETUP_TYPE. Valid options are 'distutils' or 'setuptools'")
endif
# Target packages need both the python interpreter on the target (for
# runtime) and the python interpreter on the host (for
# compilation). However, host packages only need the python
# interpreter on the host, whose version may be enforced by setting
# the *_NEEDS_HOST_PYTHON variable.
#
# So:
# - for target packages, we always depend on the default python interpreter
# (the one selected by the config);
# - for host packages:
# - if *_NEEDS_HOST_PYTHON is not set, then we use the default
# interpreter;
# - otherwise, we depend on the one requested by *_NEEDS_HOST_PYTHON.
#
ifeq ($(4),target)
$(2)_DEPENDENCIES += $$(if $$(BR2_PACKAGE_PYTHON3),host-python3 python3,host-python python)
else
ifeq ($$($(2)_NEEDS_HOST_PYTHON),)
$(2)_DEPENDENCIES += $$(if $$(BR2_PACKAGE_PYTHON3),host-python3,host-python)
else
ifeq ($$($(2)_NEEDS_HOST_PYTHON),python2)
$(2)_DEPENDENCIES += host-python
else ifeq ($$($(2)_NEEDS_HOST_PYTHON),python3)
$(2)_DEPENDENCIES += host-python3
else
$$(error Incorrect value '$$($(2)_NEEDS_HOST_PYTHON)' for $(2)_NEEDS_HOST_PYTHON)
endif
endif # ($$($(2)_NEEDS_HOST_PYTHON),)
endif # ($(4),target)
# Setuptools based packages will need setuptools for the host Python
# interpreter (both host and target).
#
# If we have a host package that says "I need Python 3", we install
# setuptools for python3.
#
# If we have a host packge that says "I need Python 2", we install
# setuptools for python2.
#
# If we have a target package, or a host package that doesn't have any
# <pkg>_NEEDS_HOST_PYTHON, and BR2_PACKAGE_PYTHON3 is used, then
# Python 3.x is the default Python interpreter, so we install
# setuptools for python3.
#
# In all other cases, we install setuptools for python2. Those other
# cases are: a target package or host package with
# BR2_PACKAGE_PYTHON=y, or a host-package with neither
# BR2_PACKAGE_PYTHON3=y or BR2_PACKAGE_PYTHON=y.
ifeq ($$($(2)_SETUP_TYPE),setuptools)
ifeq ($(4):$$($(2)_NEEDS_HOST_PYTHON),host:python3)
$(2)_DEPENDENCIES += $$(if $$(filter host-python3-setuptools,$(1)),,host-python3-setuptools)
else ifeq ($(4):$$($(2)_NEEDS_HOST_PYTHON),host:python2)
$(2)_DEPENDENCIES += $$(if $$(filter host-python-setuptools,$(1)),,host-python-setuptools)
else ifeq ($$(BR2_PACKAGE_PYTHON3),y)
$(2)_DEPENDENCIES += $$(if $$(filter host-python3-setuptools,$(1)),,host-python3-setuptools)
else
$(2)_DEPENDENCIES += $$(if $$(filter host-python-setuptools,$(1)),,host-python-setuptools)
endif
endif # SETUP_TYPE
# Python interpreter to use for building the package.
#
# We may want to specify the python interpreter to be used for building a
# package, especially for host-packages (target packages must be built using
# the same version of the interpreter as the one installed on the target).
#
# So:
# - for target packages, we always use the default python interpreter (which
# is the same version as the one built and installed on the target);
# - for host packages:
# - if *_NEEDS_HOST_PYTHON is not set, then we use the default
# interpreter;
# - otherwise, we use the one requested by *_NEEDS_HOST_PYTHON.
#
ifeq ($(4),target)
$(2)_PYTHON_INTERPRETER = $$(HOST_DIR)/bin/python
else
ifeq ($$($(2)_NEEDS_HOST_PYTHON),)
$(2)_PYTHON_INTERPRETER = $$(HOST_DIR)/bin/python
else
$(2)_PYTHON_INTERPRETER = $$(HOST_DIR)/bin/$$($(2)_NEEDS_HOST_PYTHON)
endif
endif
#
# Build step. Only define it if not already defined by the package .mk
# file.
#
ifndef $(2)_BUILD_CMDS
define $(2)_BUILD_CMDS
(cd $$($$(PKG)_BUILDDIR)/; \
$$($$(PKG)_BASE_ENV) $$($$(PKG)_ENV) \
$$($(2)_PYTHON_INTERPRETER) setup.py \
$$($$(PKG)_BASE_BUILD_TGT) \
$$($$(PKG)_BASE_BUILD_OPTS) $$($$(PKG)_BUILD_OPTS))
endef
endif
#
# Host installation step. Only define it if not already defined by the
# package .mk file.
#
ifndef $(2)_INSTALL_CMDS
define $(2)_INSTALL_CMDS
(cd $$($$(PKG)_BUILDDIR)/; \
$$($$(PKG)_BASE_ENV) $$($$(PKG)_ENV) \
$$($(2)_PYTHON_INTERPRETER) setup.py install \
$$($$(PKG)_BASE_INSTALL_OPTS) $$($$(PKG)_INSTALL_OPTS))
endef
endif
#
# Target installation step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_INSTALL_TARGET_CMDS
define $(2)_INSTALL_TARGET_CMDS
(cd $$($$(PKG)_BUILDDIR)/; \
$$($$(PKG)_BASE_ENV) $$($$(PKG)_ENV) \
$$($(2)_PYTHON_INTERPRETER) setup.py install --no-compile \
$$($$(PKG)_BASE_INSTALL_TARGET_OPTS) \
$$($$(PKG)_INSTALL_TARGET_OPTS))
endef
endif
#
# Staging installation step. Only define it if not already defined by
# the package .mk file.
#
ifndef $(2)_INSTALL_STAGING_CMDS
define $(2)_INSTALL_STAGING_CMDS
(cd $$($$(PKG)_BUILDDIR)/; \
$$($$(PKG)_BASE_ENV) $$($$(PKG)_ENV) \
$$($(2)_PYTHON_INTERPRETER) setup.py install \
$$($$(PKG)_BASE_INSTALL_STAGING_OPTS) \
$$($$(PKG)_INSTALL_STAGING_OPTS))
endef
endif
# Call the generic package infrastructure to generate the necessary
# make targets
$(call inner-generic-package,$(1),$(2),$(3),$(4))
endef
################################################################################
# python-package -- the target generator macro for Python packages
################################################################################
python-package = $(call inner-python-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
host-python-package = $(call inner-python-package,host-$(pkgname),$(call UPPERCASE,host-$(pkgname)),$(call UPPERCASE,$(pkgname)),host)