maint: build wheels for macos arm64 in Cirrus CI

Author: oscarbenjamin

.cirrus.yml

@@ -0,0 +1,22 @@
+#########################################################
+# Build arm64 wheels for OSX on Cirrus CI
+#########################################################
+
+cirrus_wheels_macos_arm64_task:
+  name: Build macOS arm64 wheels.
+  macos_instance:
+    image: ghcr.io/cirruslabs/macos-monterey-xcode:13.3.1
+  env:
+    PATH: /opt/homebrew/opt/[email protected]/bin:$PATH
+    CIBW_ARCHS_MACOS: arm64
+  install_pre_requirements_script:
+    - brew install [email protected]
+    - ln -s python3 /opt/homebrew/opt/[email protected]/bin/python
+    - which python
+    - python --version
+  install_cibuildwheel_script:
+    - python -m pip install cibuildwheel==2.11.4
+  run_cibuildwheel_script:
+    - bin/cibw.sh
+  wheels_artifacts:
+    path: "wheelhouse/*"

.github/workflows/buildwheel.yml

@@ -40,7 +40,7 @@ jobs:
           CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
           CIBW_MANYLINUX_I686_IMAGE: manylinux2014
           CIBW_BEFORE_ALL_LINUX: bin/cibw_before_all_linux.sh
-          CIBW_BEFORE_ALL_MACOS: bin/cibw_before_all_macosx.sh
+          CIBW_BEFORE_ALL_MACOS: bin/cibw_before_all_macosx_x86_64.sh
           CIBW_BEFORE_ALL_WINDOWS: msys2 -c bin/cibw_before_all_windows.sh
           CIBW_BEFORE_BUILD_WINDOWS: msys2 -c bin/cibw_before_build_windows.sh
           CIBW_BEFORE_BUILD: pip install numpy cython delvewheel

bin/cibw.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#
+# This script can be used to test cibuildwheel locally on OSX/Linux
+#
+# It is also worth commenting out the BEFORE_ALL line to build GMP etc after you have
+# built those once because that is by far the slowest step.
+#
+
+rm -f wheelhouse/*
+
+# bin/build_dependencies_unix.sh places headers and shared libraries under .local
+export CIBW_ENVIRONMENT='C_INCLUDE_PATH=$(pwd)/.local/include/ LIBRARY_PATH=$(pwd)/.local/lib/ LD_LIBRARY_PATH=$(pwd)/.local/lib:$LD_LIBRARY_PATH PYTHON_FLINT_MINGW64=true'
+
+export CIBW_BUILD='cp39-* cp310-* cp311-*'
+# export CIBW_BUILD='cp311-*'
+export CIBW_SKIP='*-win32 *-manylinux_i686 *-musllinux_*'
+
+# export CIBW_ARCHS_MACOS="x86_64"
+export CIBW_ARCHS_MACOS="arm64"
+
+export CIBW_BEFORE_ALL_LINUX=bin/cibw_before_all_linux.sh
+# export CIBW_BEFORE_ALL_MACOS=bin/cibw_before_all_macosx_x86_64.sh
+export CIBW_BEFORE_ALL_MACOS=bin/cibw_before_all_macosx_arm64.sh
+export CIBW_BEFORE_ALL_WINDOWS='C:\\msys64\\usr\\bin\\bash bin/cibw_before_all_windows.sh'
+
+export CIBW_BEFORE_BUILD='pip install numpy cython delvewheel'
+export CIBW_BEFORE_BUILD_WINDOWS='C:\\msys64\\usr\\bin\\bash bin/cibw_before_build_windows.sh'
+
+export CIBW_REPAIR_WHEEL_COMMAND_WINDOWS='bin\cibw_repair_wheel_command_windows.bat {dest_dir} {wheel}'
+
+# export CIBW_TEST_COMMAND="python -c 'import flint; print(str(flint.fmpz(2)))'"
+export CIBW_TEST_COMMAND="python {project}/test/test.py && python {project}/test/dtest.py"
+
+# cibuildwheel --platform linux
+# cibuildwheel --platform windows
+cibuildwheel --platform macos

bin/cibw_before_all_macosx_arm64.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+export CPPFLAGS=" --target=arm64-apple-macos11"
+export LDFLAGS=" -arch arm64"
+
+bin/build_dependencies_unix.sh\
+  --gmp gmp\
+  --host aarch64-apple-darwin