Add wheel support for aarch64

.ci/build-manylinux-wheels.sh

@@ -11,8 +11,12 @@ ${PIP} wheel /io/ -w /io/dist/
 
 # Bundle external shared libraries into the wheels.
 for whl in /io/dist/*.whl; do
-    auditwheel repair --plat="manylinux2010_${PYARCH}" \
-               $whl -w /io/dist/
+    if [ "${PYARCH}" == "aarch64" ] ; then
+	PLAT="manylinux2014_${PYARCH}"
+    else
+	PLAT="manylinux2010_${PYARCH}"
+    fi
+    auditwheel repair --plat="${PLAT}" $whl -w /io/dist/
     rm /io/dist/*-linux_*.whl
 done
 

.ci/travis-build-wheels.sh

@@ -45,9 +45,14 @@ if [ "${TRAVIS_OS_NAME}" == "linux" ]; then
                    s='m' if tuple('${pyver}'.split('.')) < ('3', '8') \
                      else ''))")
 
-        for arch in x86_64; do
-            ML_IMAGE="quay.io/pypa/manylinux2010_${arch}"
-            docker pull "${ML_IMAGE}"
+      if [ "${TRAVIS_CPU_ARCH}" == "arm64" ] ; then
+          arch = aarch64;
+          ML_IMAGE="quay.io/pypa/manylinux2014_${arch}"
+      elif [ "${TRAVIS_CPU_ARCH}" == "x86_64" ] ; then
+          arch = x86_64;
+          ML_IMAGE="quay.io/pypa/manylinux2010_${arch}"
+      fi
+      docker pull "${ML_IMAGE}"
             docker run --rm \
                 -v "${_root}":/io \
                 -e "PYARCH=${arch}" \
@@ -56,7 +61,6 @@ if [ "${TRAVIS_OS_NAME}" == "linux" ]; then
                 "${ML_IMAGE}" /io/.ci/build-manylinux-wheels.sh
 
             _upload_wheels
-        done
     done
 
 elif [ "${TRAVIS_OS_NAME}" == "osx" ]; then

.travis.yml

@@ -62,18 +62,39 @@ matrix:
           python: "3.6"
           env: BUILD=tests
 
+        - os: linux
+          dist: trusty
+          arch: arm64
+          language: python
+          python: "3.6"
+          env: BUILD=tests,wheels,release
+
         - os: linux
           dist: xenial
           language: python
           python: "3.7"
           env: BUILD=tests
 
+        - os: linux
+          dist: xenial
+          arch: arm64
+          language: python
+          python: "3.7"
+          env: BUILD=tests,wheels,release
+
         - os: linux
           dist: xenial
           language: python
           python: "3.8"
           env: BUILD=tests
 
+        - os: linux
+          dist: xenial
+          arch: arm64
+          language: python
+          python: "3.8"
+          env: BUILD=tests,wheels,release
+
         - os: linux
           dist: trusty
           branches: {only: [releases]}
@@ -82,6 +103,15 @@ matrix:
           services: [docker]
           env: BUILD=tests,wheels,release
 
+        - os: linux
+          dist: trusty
+          branches: {only: [releases] }
+          arch: arm64
+          language: python
+          python: "3.5"
+          services: [docker]
+          env: BUILD=tests,wheels,release
+
 cache:
     pip