diff options
Diffstat (limited to 'grpc/tools/dockerfile/grpc_artifact_python_linux_armv7/install_python_for_wheel_crosscompilation.sh')
-rwxr-xr-x | grpc/tools/dockerfile/grpc_artifact_python_linux_armv7/install_python_for_wheel_crosscompilation.sh | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/grpc/tools/dockerfile/grpc_artifact_python_linux_armv7/install_python_for_wheel_crosscompilation.sh b/grpc/tools/dockerfile/grpc_artifact_python_linux_armv7/install_python_for_wheel_crosscompilation.sh new file mode 100755 index 00000000..cc7349bb --- /dev/null +++ b/grpc/tools/dockerfile/grpc_artifact_python_linux_armv7/install_python_for_wheel_crosscompilation.sh @@ -0,0 +1,46 @@ +#!/bin/bash +# Copyright 2021 The gRPC Authors +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +set -ex + +# ARGUMENTS +# $1 - python version in "3.X.Y" format +# $2 - python tags (as in manylinx images) e.g. "/opt/python/cp37-cp37m" +PYTHON_VERSION="$1" +PYTHON_PREFIX="$2" + +curl -O "https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tar.xz" +tar -xf "Python-${PYTHON_VERSION}.tar.xz" +pushd "Python-${PYTHON_VERSION}" + +# In this step, we are building python that can run on the architecture where the build runs (x64). +# Since the CC, CXX and other env vars are set by default to point to the crosscompilation toolchain, +# we explicitly unset them to end up with x64 python binaries. +(unset AS AR CC CPP CXX LD && ./configure --prefix="${PYTHON_PREFIX}" && make -j 4 && make install) + +# When building the crosscompiled native extension, python will automatically add its include directory +# that contains "Python.h" and other headers. But since we are going to be crosscompiling +# the wheels, we need the pyconfig.h that corresponds to the target architecture. +# Since pyconfig.h is the only generated header and python itself (once built) doesn't +# really need this header anymore, we simply generate a new pyconfig.h using our crosscompilation +# toolchain and overwrite the current ("wrong") version in the python's include directory. +./configure && cp pyconfig.h "${PYTHON_PREFIX}"/include/python* + +popd +# remove the build directory to decrease the overall docker image size +rm -rf "Python-${PYTHON_VERSION}" + +# install cython and wheel +"${PYTHON_PREFIX}/bin/pip3" install --upgrade cython wheel |