Add scripts to build Linux module wheels

Author: thewtex

scripts/dockcross-manylinux-build-module-wheels.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# Pull dockcross manylinux images
+docker pull dockcross/manylinux-x64
+#docker pull dockcross/manylinux-x86
+
+# Generate dockcross scripts
+docker run dockcross/manylinux-x64 > /tmp/dockcross-manylinux-x64
+chmod u+x /tmp/dockcross-manylinux-x64
+#docker run dockcross/manylinux-x86 > /tmp/dockcross-manylinux-x86
+#chmod u+x /tmp/dockcross-manylinux-x86
+
+script_dir="`cd $(dirname $0); pwd`"
+
+# Build wheels
+mkdir -p dist
+DOCKER_ARGS="-v $(pwd)/dist:/work/dist/ -v "$script_dir/..":/ITKPythonPackage"
+/tmp/dockcross-manylinux-x64 \
+  -a "$DOCKER_ARGS" \
+  "/ITKPythonPackage/scripts/internal/manylinux-build-module-wheels.sh" "$@"
+#/tmp/dockcross-manylinux-x86 \
+#  -a "$DOCKER_ARGS" \
+# "$script_dir/scripts/internal/manylinux-build-module-wheels.sh" "$@"

scripts/internal/manylinux-build-module-wheels.sh

@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+set -e -x
+
+# Versions can be restricted by passing them in as arguments to the script
+# For example,
+# manylinux-build-wheels.sh cp27mu cp35
+if [[ $# -eq 0 ]]; then
+  PYBINARIES=(/opt/python/*/bin)
+else
+  PYBINARIES=()
+  for version in "$@"; do
+    PYBINARIES+=(/opt/python/*${version}*/bin)
+  done
+fi
+
+# i686 or x86_64 ?
+case $(uname -p) in
+    i686)
+        arch=x86
+        ;;
+    x86_64)
+        arch=x64
+        ;;
+    *)
+        die "Unknown architecture $(uname -p)"
+        ;;
+esac
+
+echo "Building wheels for $arch"
+
+# Since the python interpreter exports its symbol (see [1]), python
+# modules should not link against any python libraries.
+# To ensure it is not the case, we configure the project using an empty
+# file as python library.
+#
+# [1] "Note that libpythonX.Y.so.1 is not on the list of libraries that
+# a manylinux1 extension is allowed to link to. Explicitly linking to
+# libpythonX.Y.so.1 is unnecessary in almost all cases: the way ELF linking
+# works, extension modules that are loaded into the interpreter automatically
+# get access to all of the interpreter's symbols, regardless of whether or
+# not the extension itself is explicitly linked against libpython. [...]"
+#
+# Source: https://www.python.org/dev/peps/pep-0513/#libpythonx-y-so-1
+PYTHON_LIBRARY=/ITKPythonPackage/scripts/internal/manylinux-libpython-not-needed-symbols-exported-by-interpreter
+touch ${PYTHON_LIBRARY}
+
+# Compile wheels re-using standalone project and archive cache
+for PYBIN in "${PYBINARIES[@]}"; do
+    if [[ ${PYBIN} == *"cp26"* || ${PYBIN} == *"cp33"* ]]; then
+        echo "Skipping ${PYBIN}"
+        continue
+    fi
+
+    PYTHON_EXECUTABLE=${PYBIN}/python
+    PYTHON_INCLUDE_DIR=$( find -L ${PYBIN}/../include/ -name Python.h -exec dirname {} \; )
+
+    echo ""
+    echo "PYTHON_EXECUTABLE:${PYTHON_EXECUTABLE}"
+    echo "PYTHON_INCLUDE_DIR:${PYTHON_INCLUDE_DIR}"
+    echo "PYTHON_LIBRARY:${PYTHON_LIBRARY}"
+
+    if [[ -e /work/requirements-dev.txt ]]; then
+      ${PYBIN}/pip install -r /work/requirements-dev.txt
+    fi
+    itk_build_dir=/work/ITK-$(basename $(dirname ${PYBIN}))-manylinux1_${arch}
+    ln -fs /ITKPythonPackage/ITK-$(basename $(dirname ${PYBIN}))-manylinux1_${arch} $itk_build_dir
+    if [[ ! -d $itk_build_dir ]]; then
+      echo 'ITK build tree not available!' 1>&2
+      exit 1
+    fi
+    itk_source_dir=/work/standalone-${arch}-build/ITK-source
+    ln -fs /ITKPythonPackage/standalone-${arch}-build/ /work/standalone-${arch}-build
+    if [[ ! -d $itk_source_dir ]]; then
+      echo 'ITK source tree not available!' 1>&2
+      exit 1
+    fi
+    ${PYBIN}/python setup.py bdist_wheel --build-type MinSizeRel -G Ninja -- \
+      -DITK_DIR:PATH=${itk_build_dir} \
+      -DITK_USE_SYSTEM_SWIG:BOOL=ON \
+      -DWRAP_ITK_INSTALL_COMPONENT_IDENTIFIER:STRING=PythonWheel \
+      -DSWIG_EXECUTABLE:FILEPATH=${itk_build_dir}/Wrapping/Generators/SwigInterface/swig/bin/swig \
+      -DCMAKE_CXX_COMPILER_TARGET:STRING=$(uname -p)-linux-gnu \
+      -DBUILD_TESTING:BOOL=OFF \
+      -DPYTHON_EXECUTABLE:FILEPATH=${PYTHON_EXECUTABLE} \
+      -DPYTHON_INCLUDE_DIR:PATH=${PYTHON_INCLUDE_DIR} \
+      -DPYTHON_LIBRARY:FILEPATH=${PYTHON_LIBRARY}
+    ${PYBIN}/python setup.py clean
+done
+
+# Since there are no external shared libraries to bundle into the wheels
+# this step will fixup the wheel switching from 'linux' to 'manylinux1' tag
+for whl in dist/*linux_$(uname -p).whl; do
+    auditwheel repair $whl -w /work/dist/
+    rm $whl
+done