Initial GitHub workflow implementation

.github/workflows/ci.yml

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+name: Tests
+
+on:
+  push:
+    branches:
+    - RB-2.5
+    paths-ignore:
+      - Documentation
+  pull_request:
+    branches:
+    - RB-2.5
+    paths-ignore:
+      - Documentation
+
+jobs:
+  test:
+    name: Test ${{ matrix.os }} Python ${{ matrix.python-version }}
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: ${{ matrix.special-invocation }}bash -l {0}
+    env:
+      CI: 'True'
+      PYTHON_VERSION: ${{ matrix.python-version }}
+      # PYSIDE2_VERSION: ${{ matrix.pyside2-version }}
+      # PYSIDE2_QT_VERSION: ${{ matrix.pyside2-qt-version }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-18.04] # macos-latest, windows-latest
+        python-version: ['2.7'] # '3.6', '3.9'
+        include:
+        - os: ubuntu-18.04
+          special-invocation: 'xvfb-run --auto-servernum '
+          python-version: '2.7'
+        #  python-version: '3.6'
+        #  pyside2-version: 5.12.0  # 5.12.1-5.12.6 fails on collection/segfaults on patch test
+        # - os: windows-latest
+        #   python-version: '3.9'
+        #   pyside2-version: 5.15  # No 5.12 wheel on Windows and Python 3.9
+        # - os: macos-latest
+        #   python-version: '2.7'
+        #  python-version: '3.6'
+    steps:
+      - name: Checkout branch
+        uses: actions/checkout@v2
+      - name: Install Linux system packages
+        if: contains(matrix.os, 'ubuntu')
+        shell: bash
+        run: |
+          sudo apt update
+          sudo apt install libpulse-dev libegl1-mesa libopengl0 gcc-8 g++-8 libqt4-dev libqt4-opengl-dev libglew-dev libexpat1-dev \
+            gdb libcairo2-dev python-dev python-pyside libpyside-dev libshiboken-dev libtinyxml-dev liblcms2-dev libyaml-cpp-dev \
+            libopenjp2-7-dev libtiff-dev libjpeg-dev libpng-dev libwebp-dev libraw-dev libfreetype6-dev libssl-dev libboost-all-dev \
+            python-qtpy
+      - name: Install Macos system packages
+        if: contains(matrix.os, 'macos')
+        shell: bash
+        run: |
+          brew install xctool python@2 boost giflib jpeg libpng libtiff libxml2 openssl pcre readline sqlite expat cairo \
+            gnu-sed glew openssl ilmbase openexr freetype fontconfig ffmpeg openjpeg libraw libheif openvdb
+      - name: Build
+        if: always() && !contains(github.ref, 'coverity_scan')
+        run: |
+          ./.github/workflows/gen_config.sh
+          ./tools/travis/build.sh
+      - name: Upload coverage data to coveralls.io
+        if: contains(matrix.os, 'ubuntu') && contains(github.ref, 'coverity_scan')
+        shell: bash
+        env:
+          COVERALLS_FLAG_NAME: ${{ matrix.os }} Python ${{ matrix.python-version }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          ln -s Tests/google-mock Tests/google-test .
+          pushd Tests
+          gcov -lp *.gcno > /dev/null
+          popd ..
+          python -m pip install --upgrade cpp-coveralls
+          python -b -X dev -m cpp-coveralls -n --exclude /usr/include --exclude 'Tests/google-test' --exclude 'Tests/google-mock' \
+            --exclude 'google-test' --exclude 'google-mock' --exclude 'libs/OpenFX' --exclude-pattern '.*/moc_.*\.cpp' \
+            --exclude-pattern='.*/Tests/.*\.cpp' --exclude-pattern='.*/Tests/.*\.h'

.github/workflows/gen_config.sh

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+#!/usr/bin/env bash
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of Natron <http://www.natron.fr/>,
+# Copyright (C) 2018-2021 The Natron developers
+# Copyright (C) 2013-2018 INRIA and Alexandre Gauthier-Foichat
+#
+# Natron is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# Natron is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Natron.  If not, see <http://www.gnu.org/licenses/gpl-2.0.html>
+# ***** END LICENSE BLOCK *****
+
+# config.pri
+if [[ ${RUNNER_OS} == "Linux" ]]; then
+    # Ubuntu 12.04 precise doesn't have a pkg-config file for expat (expat.pc)
+    echo 'boost: LIBS += -lboost_serialization' > config.pri
+    echo 'expat: LIBS += -lexpat' >> config.pri
+    echo 'expat: PKGCONFIG -= expat' >> config.pri
+    # pyside and shiboken for python3 cannot be configured with pkg-config on Ubuntu 12.04LTS Precise
+    # pyside and shiboken for python2 still need the extra QtCore and QtGui include directories
+    echo 'PYSIDE_PKG_CONFIG_PATH = $$system($$PYTHON_CONFIG --prefix)/lib/pkgconfig' >> config.pri
+    echo 'pyside: PKGCONFIG -= pyside' >> config.pri
+    echo 'pyside: INCLUDEPATH += $$system(env PKG_CONFIG_PATH=$$PYSIDE_PKG_CONFIG_PATH pkg-config --variable=includedir pyside)' >> config.pri
+    echo 'pyside: INCLUDEPATH += $$system(env PKG_CONFIG_PATH=$$PYSIDE_PKG_CONFIG_PATH pkg-config --variable=includedir pyside)/QtCore' >> config.pri
+    echo 'pyside: INCLUDEPATH += $$system(env PKG_CONFIG_PATH=$$PYSIDE_PKG_CONFIG_PATH pkg-config --variable=includedir pyside)/QtGui' >> config.pri
+    echo 'pyside: INCLUDEPATH += $$system(env PKG_CONFIG_PATH=$$PYSIDE_PKG_CONFIG_PATH pkg-config --variable=includedir QtGui)' >> config.pri
+    #echo 'pyside: LIBS += -lpyside.cpython-32mu' >> config.pri
+    echo 'pyside: LIBS += -lpyside-python2.7' >> config.pri
+    # pyside doesn't have PySide::getWrapperForQObject on Ubuntu 12.04LTS Precise 
+    echo 'pyside: DEFINES += PYSIDE_OLD' >> config.pri
+    #echo 'shiboken: PKGCONFIG -= shiboken' >> config.pri
+    #echo 'shiboken: INCLUDEPATH += $$system(pkg-config --variable=includedir shiboken)' >> config.pri
+    #echo 'shiboken: LIBS += -lshiboken.cpython-32mu' >> config.pri
+elif [[ ${RUNNER_OS} == "Linux" ]]; then
+    echo 'boost: INCLUDEPATH += /usr/local/include' > config.pri
+    echo 'boost: LIBS += -L/usr/local/lib -lboost_serialization-mt -lboost_thread-mt -lboost_system-mt' >> config.pri
+    echo 'expat: PKGCONFIG -= expat' >> config.pri
+    echo 'expat: INCLUDEPATH += /usr/local/opt/expat/include' >> config.pri
+    echo 'expat: LIBS += -L/usr/local/opt/expat/lib -lexpat' >> config.pri
+fi