Attempt to use github workflow

.github/workflows/build.sh

@@ -0,0 +1,32 @@
+if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
+  # these cause a conflict with built webp and libtiff,
+  # curl from brew requires zstd, use system curl
+  brew remove --ignore-dependencies webp zstd xz libtiff curl
+fi
+
+if [[ "$MB_PYTHON_VERSION" == pypy3* ]]; then
+  if [[ "$TRAVIS_OS_NAME" != "macos-latest" ]]; then
+    MB_ML_VER="2010"
+    DOCKER_TEST_IMAGE="multibuild/xenial_$PLAT"
+  else
+    MB_PYTHON_OSX_VER="10.9"
+  fi
+fi
+
+echo "::group::Install a virtualenv"
+  source ci/multibuild/common_utils.sh
+  source ci/multibuild/travis_steps.sh
+  python3 -m pip install virtualenv
+  before_install
+echo "::endgroup::"
+
+echo "::group::Build wheel"
+  build_wheel $REPO_DIR $PLAT
+  ls -l "${GITHUB_WORKSPACE}/${WHEEL_SDIR}/"
+echo "::endgroup::"
+
+if [[ $MACOSX_DEPLOYMENT_TARGET != "11.0" ]]; then
+  echo "::group::Test wheel"
+    install_run $PLAT
+  echo "::endgroup::"
+fi

.github/workflows/wheels.yml

@@ -0,0 +1,49 @@
+name: Wheels
+
+on: [push, pull_request]
+
+env:
+  REPO_DIR: .
+  BUILD_DEPENDS: ""
+  TEST_DEPENDS: "pytest pytest-cov"
+  WHEEL_SDIR: wheelhouse
+
+jobs:
+  build:
+    name: Build wheel ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ "macos-10.15" ]
+    env:
+      BUILD_COMMIT: HEAD
+      CIBW_BEFORE_ALL_LINUX: sh ci/docker-fixes.sh
+      CIBW_BEFORE_ALL_MACOS: sh ci/osx-fixes.sh
+      CIBW_ARCHS_MACOS: x86_64 arm64 universal2
+      CIBW_SKIP: "cp38-macosx* cp37-macosx*"
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Update path
+        if: startsWith(matrix.os, 'macos')
+        run: |
+          echo "/usr/local/opt/libtool/bin" >> $GITHUB_PATH
+          echo "/usr/local/opt/ragel/bin" >> $GITHUB_PATH
+          echo "/usr/local/opt/bison/bin" >> $GITHUB_PATH
+          echo "/usr/local/opt/flex/bin" >> $GITHUB_PATH
+          echo "/usr/local/opt/automake/bin" >> $GITHUB_PATH
+      - name: Install cibuildwheel
+        run: python -m pip install cibuildwheel==2.0.0a2
+
+      - name: Build wheels
+        run: python -m cibuildwheel --output-dir wheelhouse
+      - uses: actions/upload-artifact@v2
+        with:
+          name: wheels
+          path: wheelhouse/*.whl

ci/docker-fixes.sh

@@ -0,0 +1,63 @@
+curl http://pkgconfig.freedesktop.org/releases/pkg-config-0.29.2.tar.gz -L -o pkg-config.tar.gz && \
+    mkdir pkg-config && \
+    tar -zxf pkg-config.tar.gz -C pkg-config --strip-components 1 && \
+    cd pkg-config && \
+    ./configure --prefix=/usr/local --with-internal-glib --disable-host-tool && \
+    make && \
+    make install 
+
+curl ftp://ftp.gnu.org/gnu/m4/m4-latest.tar.gz -L -o m4.tar.gz && \
+    mkdir m4 && \
+    tar -zxf m4.tar.gz -C m4 --strip-components 1 && \
+    cd m4 && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install 
+
+curl -L http://install.perlbrew.pl | bash && \
+    . ~/perl5/perlbrew/etc/bashrc && \
+    echo '. /root/perl5/perlbrew/etc/bashrc' >> /etc/bashrc && \
+    perlbrew install perl-5.29.0 -j 4 -n && \
+    perlbrew switch perl-5.29.0 
+
+curl http://ftp.gnu.org/gnu/automake/automake-1.16.1.tar.gz -L -o automake.tar.gz && \
+    mkdir automake && \
+    tar -zxf automake.tar.gz -C automake --strip-components 1 && \
+    cd automake && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install
+
+curl http://ftp.gnu.org/gnu/autoconf/autoconf-latest.tar.gz -L -o autoconf.tar.gz && \
+    mkdir autoconf && \
+    tar -zxf autoconf.tar.gz -C autoconf --strip-components 1 && \
+    cd autoconf && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install
+
+curl http://ftp.gnu.org/gnu/libtool/libtool-2.4.6.tar.gz -L -o libtool.tar.gz && \
+    mkdir libtool && \
+    tar -zxf libtool.tar.gz -C libtool --strip-components 1 && \
+    cd libtool && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install
+
+# bison
+curl https://ftp.gnu.org/gnu/bison/bison-3.7.6.tar.xz -L -o bison.tar.xz && \
+    mkdir bison && \
+    xz --decompress --stdout bison.tar.xz | tar xf - -C bison --strip-components 1 && \
+    cd bison && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install
+
+# flex
+curl https://github.com/westes/flex/releases/download/v2.6.4/flex-2.6.4.tar.gz -L -o  flex.tar.gz && \
+    mkdir flex && \
+    tar -zxf flex.tar.gz -C flex --strip-components 1 && \
+    cd flex && \
+    ./configure --prefix=/usr/local && \
+    make && \
+    make install

ci/osx-fixes.sh

@@ -0,0 +1 @@
+brew install libtool ragel bison flex automake

src/c/Makefile

@@ -26,9 +26,9 @@ else
     # on macOS, we want a 64-bit only lib targeting >= 10.9, since harfbuzz >= 2.4
     # requires c++11
     MACOSX_DEPLOYMENT_TARGET ?= 10.9
-    CFLAGS   += -m64 -arch x86_64 -mmacosx-version-min=$(MACOSX_DEPLOYMENT_TARGET)
-    CXXFLAGS += -m64 -arch x86_64 -mmacosx-version-min=$(MACOSX_DEPLOYMENT_TARGET)
-    LDFLAGS  += -m64 -arch x86_64 -mmacosx-version-min=$(MACOSX_DEPLOYMENT_TARGET)
+    CFLAGS   += -m64 -arch x86_64 -arch arm64 -mmacosx-version-min=$(MACOSX_DEPLOYMENT_TARGET)
+    CXXFLAGS += -m64 -arch x86_64 -arch arm64 -mmacosx-version-min=$(MACOSX_DEPLOYMENT_TARGET)
+    LDFLAGS  += -m64 -arch x86_64 -arch arm64 -mmacosx-version-min=$(MACOSX_DEPLOYMENT_TARGET)
   else ifeq ($(shell uname -s), Linux)
     LIBTTFAUTOHINT := "$(LIB_NAME).so"
   endif