add github-workflow building wheels

.github/workflows/ci.yml

@@ -0,0 +1,57 @@
+name: Build
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+  workflow_dispatch:
+
+jobs:
+  build_wheels:
+    name: Build wheel for ${{ matrix.config.platform }} ${{ matrix.config.arch }}
+
+    runs-on: ${{ matrix.config.os }}
+    strategy:
+      matrix:
+        config:
+          - { os: ubuntu-22.04, platform: manylinux, arch: x86_64 }
+          - { os: ubuntu-22.04, platform: musllinux, arch: x86_64 }
+          - { os: macos-12, platform: macosx, arch: x86_64 }
+          - { os: macos-12, platform: macosx, arch: arm64 }
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Build wheel
+        uses: pypa/cibuildwheel@v2.12.1
+        env:
+          CIBW_ARCHS: "${{ matrix.config.arch }}"
+          CIBW_BUILD: "cp*-${{ matrix.config.platform }}_${{ matrix.config.arch }}"
+          CIBW_SKIP: "cp36* cp37*"
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          path: ./wheelhouse/*.whl
+
+  build_sdist:
+    name: Build sdist
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.8"
+
+      - name: Build sdist
+        run: python setup.py sdist
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          path: ./dist/*

build-scripts/common-install-tesseract.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -ex
+
+LEPTONICA_VERSION="1.83.1"
+TESSERACT_VERSION="5.3.1"
+
+PREFIX="${PREFIX:-/usr/local}"
+
+curl -L -O "https://github.com/DanBloomberg/leptonica/releases/download/${LEPTONICA_VERSION}/leptonica-${LEPTONICA_VERSION}.tar.gz"
+
+tar -xzf leptonica-${LEPTONICA_VERSION}.tar.gz
+
+curl -L -o "tesseract-${TESSERACT_VERSION}.tar.gz" "https://github.com/tesseract-ocr/tesseract/archive/refs/tags/${TESSERACT_VERSION}.tar.gz"
+
+tar -xzf tesseract-${TESSERACT_VERSION}.tar.gz

build-scripts/linux-install-tesseract.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+set -ex
+
+source $(dirname -- "$0")/common-install-tesseract.sh
+
+# build leptonica
+cd leptonica-${LEPTONICA_VERSION}
+
+cmake \
+  -B build \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX="${PREFIX}" \
+  -DBUILD_SHARED_LIBS=ON
+
+cmake \
+  --build build \
+  --config Release \
+  --target install
+
+cd ..
+
+# build tesseract
+cd tesseract-${TESSERACT_VERSION}
+
+cmake \
+  -B build \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX="${PREFIX}" \
+  -DBUILD_SHARED_LIBS=ON \
+  -DOPENMP_BUILD=OFF
+
+cmake \
+  --build build \
+  --config Release \
+  --target install
+
+cd ..

build-scripts/macos-install-build-dependencies.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -ex
+
+# leptonica dependencies
+brew install \
+  giflib \
+  jpeg-turbo \
+  libpng \
+  libtiff \
+  openjpeg \
+  webp \
+  zlib
+
+# tesseract dependencies
+brew install \
+  pango \
+  cairo \
+  icu4c
+brew link icu4c

build-scripts/macos-install-tesseract.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -ex
+
+source $(dirname -- "$0")/common-install-tesseract.sh
+
+# build leptonica
+cd leptonica-${LEPTONICA_VERSION}
+
+cmake \
+  -B build \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX="${PREFIX}" \
+  -DCMAKE_OSX_DEPLOYMENT_TARGET="12.0" \
+  -DCMAKE_FIND_FRAMEWORK=NEVER \
+  -DBUILD_SHARED_LIBS=ON
+
+cmake \
+  --build build \
+  --config Release \
+  --target install
+
+cd ..
+
+# build tesseract
+# see https://github.com/orgs/Homebrew/discussions/4031#discussioncomment-4348867
+export PKG_CONFIG_PATH=$(brew --prefix)/opt/icu4c/lib/pkgconfig:$PKG_CONFIG_PATH
+
+cd tesseract-${TESSERACT_VERSION}
+
+cmake \
+  -B build \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX="${PREFIX}" \
+  -DCMAKE_OSX_DEPLOYMENT_TARGET="12.0" \
+  -DCMAKE_FIND_FRAMEWORK=NEVER \
+  -DBUILD_SHARED_LIBS=ON \
+  -DOPENMP_BUILD=OFF
+
+cmake \
+  --build build \
+  --config Release \
+  --target install
+
+cd ..

build-scripts/manylinux-install-build-dependencies.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -ex
+
+# leptonica dependencies
+yum install -y \
+  giflib-devel \
+  libjpeg-devel \
+  libpng-devel \
+  libtiff-devel \
+  libwebp-devel \
+  openjpeg2-devel \
+  zlib-devel
+
+# tesseract dependencies
+yum install -y \
+  cairo-devel \
+  libicu-devel \
+  pango-devel

build-scripts/musllinux-install-build-dependencies.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -ex
+
+# leptonica dependencies
+apk add \
+  giflib-dev\
+  libjpeg-turbo-dev\
+  libpng-dev\
+  libwebp-dev\
+  openjpeg-dev\
+  openjpeg-tools\
+  tiff-dev\
+  zlib-dev
+
+# tesseract dependencies
+apk add \
+  cairo-dev \
+  icu-dev \
+  pango-dev

pyproject.toml

@@ -0,0 +1,24 @@
+[tool.cibuildwheel]
+build-verbosity = "1"
+
+manylinux-x86_64-image = "manylinux_2_28"
+manylinux-aarch64-image = "manylinux_2_28"
+
+[tool.cibuildwheel.linux]
+before-all = [
+  "bash build-scripts/manylinux-install-build-dependencies.sh",
+  "bash build-scripts/linux-install-tesseract.sh",
+]
+
+[[tool.cibuildwheel.overrides]]
+select = "*-musllinux*"
+before-all = [
+  "bash build-scripts/musllinux-install-build-dependencies.sh",
+  "bash build-scripts/linux-install-tesseract.sh",
+]
+
+[tool.cibuildwheel.macos]
+before-all = [
+  "bash build-scripts/macos-install-build-dependencies.sh",
+  "bash build-scripts/macos-install-tesseract.sh",
+]