Add QEMU setup to dist.yml to create arm64 wheels (#18)

* Add QEMU setup to dist.yml

* Update pyproject.toml to install Cython via Pip

* Update dist.yml to run w/QEMU only on release

Author: wbarnha

.github/workflows/dist.yml

@@ -25,6 +25,12 @@ jobs:
         with:
             fetch-depth: 0
 
+      - name: Set up QEMU
+        if: runner.os == 'Linux' and github.event_name == 'release' && github.event.action == 'created'
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: all
+
       - uses: actions/setup-python@v4
         name: 'Set up Python 3.11'
         with:
@@ -37,8 +43,7 @@ jobs:
       - name: 'Build and test wheels'
         env:
           CIBW_ARCHS_MACOS: "x86_64 universal2 arm64"
-          # GH actions is unable to do aarch64 builds at this time
-          # CIBW_ARCHS_LINUX: auto aarch64 
+          CIBW_ARCHS_LINUX: auto aarch64 
         run: |
           python3 -m cibuildwheel --output-dir dist
 

pyproject.toml

@@ -16,7 +16,7 @@ environment = {ROCKSDB_VER="v6.14.6", LIBROCKSDB_PATH="/opt/rocksdb-$ROCKSDB_VER
 
 [tool.cibuildwheel.linux]
 # Avoid re-building the C library in every iteration by testing for the build directory.
-before-build = "yum install -y bzip2-devel lz4-devel snappy-devel zlib-devel python3-Cython && (test -d $LIBROCKSDB_PATH || (  git clone https://github.com/facebook/rocksdb --depth 1 --branch $ROCKSDB_VER $LIBROCKSDB_PATH &&  cd $LIBROCKSDB_PATH &&  CXXFLAGS='-flto -Os -s' PORTABLE=1 make shared_lib -j $(nproc)  )) && pushd $LIBROCKSDB_PATH && make install-shared &&  ldconfig && popd"
+before-build = "pip3 install Cython && yum install -y bzip2-devel lz4-devel snappy-devel zlib-devel && (test -d $LIBROCKSDB_PATH || (  git clone https://github.com/facebook/rocksdb --depth 1 --branch $ROCKSDB_VER $LIBROCKSDB_PATH &&  cd $LIBROCKSDB_PATH &&  CXXFLAGS='-flto -Os -s' PORTABLE=1 make shared_lib -j $(nproc)  )) && pushd $LIBROCKSDB_PATH && make install-shared &&  ldconfig && popd"
 
 [tool.cibuildwheel.macos]
 environment = {ROCKSDB_VER="v6.29.5", LIBROCKSDB_PATH="/usr/local/opt/rocksdb-$ROCKSDB_VER", LIBRARY_PATH="/usr/local/lib/"}