Enable crosscompiling aarch64 python wheels under dockcross manylinux docker image (#8280)
This uses the dockcross manylinux docker image to enable crosscompiling aarch64 python wheels. The wheels built for aarch64 linux are excluded from the release for now, pending testing (pending, in PR#8392).
diff --git a/python/setup.py b/python/setup.py
index aab240a..696bde2 100755
--- a/python/setup.py
+++ b/python/setup.py
@@ -18,6 +18,7 @@
from distutils.command.build_py import build_py as _build_py
from distutils.command.clean import clean as _clean
+from distutils.command.build_ext import build_ext as _build_ext
from distutils.spawn import find_executable
# Find the Protocol Compiler.
@@ -157,6 +158,22 @@
if not any(fnmatch.fnmatchcase(fil, pat=pat) for pat in exclude)]
+class build_ext(_build_ext):
+ def get_ext_filename(self, ext_name):
+ # since python3.5, python extensions' shared libraries use a suffix that corresponds to the value
+ # of sysconfig.get_config_var('EXT_SUFFIX') and contains info about the architecture the library targets.
+ # E.g. on x64 linux the suffix is ".cpython-XYZ-x86_64-linux-gnu.so"
+ # When crosscompiling python wheels, we need to be able to override this suffix
+ # so that the resulting file name matches the target architecture and we end up with a well-formed
+ # wheel.
+ filename = _build_ext.get_ext_filename(self, ext_name)
+ orig_ext_suffix = sysconfig.get_config_var("EXT_SUFFIX")
+ new_ext_suffix = os.getenv("PROTOCOL_BUFFERS_OVERRIDE_EXT_SUFFIX")
+ if new_ext_suffix and filename.endswith(orig_ext_suffix):
+ filename = filename[:-len(orig_ext_suffix)] + new_ext_suffix
+ return filename
+
+
class test_conformance(_build_py):
target = 'test_python'
def run(self):
@@ -291,6 +308,7 @@
cmdclass={
'clean': clean,
'build_py': build_py,
+ 'build_ext': build_ext,
'test_conformance': test_conformance,
},
install_requires=install_requires,
