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package/pkg-python: fix get_platform for target builds

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Replicate the logic used to set _PYTHON_HOST_PLATFORM in configure.ac:
https://github.com/python/cpython/blob/v3.10.2/configure.ac#L441-L446

This should correctly set the sysconfig platform for cross builds:
https://github.com/python/cpython/blob/v3.10.2/Lib/sysconfig.py#L704-L706

Not setting this appears to cause distutils/setuptools to use the
wrong build directory names for c extensions, however this doesn't
seem to cause build or runtime errors as the installation paths still
appear to be correct for staging/target installs.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
James Hilliard 2022-01-30 02:05:35 -07:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent a778def2ac
commit 59d3a1a999
1 changed files with 9 additions and 0 deletions
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9
package/pkg-python.mk
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@ -20,6 +20,13 @@
#
################################################################################
ifeq ($(BR2_arm)$(BR2_armeb),y)
PKG_PYTHON_ARCH = arm
else
PKG_PYTHON_ARCH = $(ARCH)
endif
PKG_PYTHON_HOST_PLATFORM = linux-$(PKG_PYTHON_ARCH)
# 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.
@ -33,6 +40,7 @@ PKG_PYTHON_DISTUTILS_ENV = \
LDSHARED="$(TARGET_CROSS)gcc -shared" \
PYTHONPATH="$(if $(BR2_PACKAGE_PYTHON3),$(PYTHON3_PATH),$(PYTHON_PATH))" \
PYTHONNOUSERSITE=1 \
_PYTHON_HOST_PLATFORM="$(PKG_PYTHON_HOST_PLATFORM)" \
_PYTHON_PROJECT_BASE="$(if $(BR2_PACKAGE_PYTHON3),$(PYTHON3_DIR),$(PYTHON_DIR))" \
_PYTHON_SYSCONFIGDATA_NAME="$(PKG_PYTHON_SYSCONFIGDATA_NAME)" \
_python_sysroot=$(STAGING_DIR) \
@ -61,6 +69,7 @@ HOST_PKG_PYTHON_DISTUTILS_INSTALL_OPTS = \
# Target setuptools-based packages
PKG_PYTHON_SETUPTOOLS_ENV = \
_PYTHON_HOST_PLATFORM="$(PKG_PYTHON_HOST_PLATFORM)" \
_PYTHON_PROJECT_BASE="$(if $(BR2_PACKAGE_PYTHON3),$(PYTHON3_DIR),$(PYTHON_DIR))" \
_PYTHON_SYSCONFIGDATA_NAME="$(PKG_PYTHON_SYSCONFIGDATA_NAME)" \
PATH=$(BR_PATH) \