Migrate CI from Travis and Appveyor to Github Workflows.

.github/workflows/ci-build.yml

@@ -0,0 +1,49 @@
+name: Build and Test
+
+on:
+  - pull_request
+  - push
+
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Configure
+        # We enforce -Wdeclaration-after-statement because Qt project needs to
+        # build MD4C with Integrity compiler which chokes whenever a declaration
+        # is not at the beginning of a block.
+        run: CFLAGS='--coverage -g -O0 -Wall -Wdeclaration-after-statement -Werror' cmake -DCMAKE_BUILD_TYPE=Debug -G 'Unix Makefiles' .
+      - name: Build
+        run: make VERBOSE=1
+      - name: Test
+        run: ./scripts/run-tests.sh
+      - name: Code Coverage Report
+        if: ${{ github.event_name == 'push' }}
+        continue-on-error: true
+        run: |
+          sudo apt-get install -y lcov
+          lcov --directory . --capture --output-file coverage.info
+          lcov --remove coverage.info '/usr/*' --output-file coverage.info
+          lcov --list coverage.info
+          bash <(curl -s https://codecov.io/bash)
+
+  windows-32:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: microsoft/setup-msbuild@v1.3.1
+      - name: Configure
+        run: cmake -DCMAKE_BUILD_TYPE=Release -G "Visual Studio 17 2022" -A Win32 .
+      - name: Build
+        run: msbuild.exe md4c.sln.sln /p:Configuration=Release /p:Platform=Win32
+
+  windows-64:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: microsoft/setup-msbuild@v1.3.1
+      - name: Configure
+        run: cmake -DCMAKE_BUILD_TYPE=Release -G "Visual Studio 17 2022" -A x64 .
+      - name: Build
+        run: msbuild.exe md4c.sln /p:Configuration=Release /p:Platform=x64

README.md

@@ -1,8 +1,3 @@
-[![Linux Build Status (travis-ci.com)](https://img.shields.io/travis/mity/md4c/master.svg?logo=linux&label=linux%20build)](https://travis-ci.com/mity/md4c)
-[![Windows Build Status (appveyor.com)](https://img.shields.io/appveyor/ci/mity/md4c/master.svg?logo=windows&label=windows%20build)](https://ci.appveyor.com/project/mity/md4c/branch/master)
-[![Code Coverage Status (codecov.io)](https://img.shields.io/codecov/c/github/mity/md4c/master.svg?logo=codecov&label=code%20coverage)](https://codecov.io/github/mity/md4c)
-[![Coverity Scan Status](https://img.shields.io/coverity/scan/mity-md4c.svg?label=coverity%20scan)](https://scan.coverity.com/projects/mity-md4c)
-
 
 # MD4C Readme