Migrate Windows CI from AppVeyor to GitHub Actions

Integrate Windows/MSYS2 builds into the existing verify job matrix
instead of using a separate AppVeyor configuration. This consolidates
all CI into GitHub Actions.

- Add MINGW64 and MSYS matrix entries with msys2 shell
- Add MSYS2 setup and package installation steps
- Add Windows-specific libmicrohttpd build with --enable-poll=no
- Remove AppVeyor configuration and badge

Author: etr

.github/workflows/verify-build.yml

@@ -20,6 +20,9 @@ jobs:
       BUILD_TYPE: ${{ matrix.build-type }}
       CC: ${{ matrix.c-compiler }}
       CXX: ${{ matrix.cc-compiler }}
+    defaults:
+      run:
+        shell: ${{ matrix.shell }}
     strategy:
       fail-fast: false
       matrix:
@@ -33,6 +36,7 @@ jobs:
         coverage: [coverage, nocoverage]
         linking: [dynamic, static]
         build-type: [classic]
+        shell: [bash]
         exclude:
           - os: ubuntu-latest
             os-type: mac
@@ -271,6 +275,30 @@ jobs:
             cc-compiler: g++-10
             debug: debug
             coverage: nocoverage
+          - test-group: basic
+            os: windows-latest
+            os-type: windows
+            msys-env: MINGW64
+            shell: 'msys2 {0}'
+            build-type: classic
+            compiler-family: none
+            c-compiler: gcc
+            cc-compiler: g++
+            debug: nodebug
+            coverage: nocoverage
+            linking: dynamic
+          - test-group: basic
+            os: windows-latest
+            os-type: windows
+            msys-env: MSYS
+            shell: 'msys2 {0}'
+            build-type: classic
+            compiler-family: none
+            c-compiler: gcc
+            cc-compiler: g++
+            debug: nodebug
+            coverage: nocoverage
+            linking: dynamic
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4
@@ -283,7 +311,27 @@ jobs:
     # the head of the pull request instead of the merge commit.
     - run: git checkout HEAD^2
       if: ${{ github.event_name == 'pull_request' }}
-        
+
+    - name: Setup MSYS2
+      if: ${{ matrix.os-type == 'windows' }}
+      uses: msys2/setup-msys2@v2
+      with:
+        msystem: ${{ matrix.msys-env }}
+        update: true
+        install: >-
+          autotools
+          base-devel
+
+    - name: Install MinGW64 packages
+      if: ${{ matrix.os-type == 'windows' && matrix.msys-env == 'MINGW64' }}
+      run: |
+        pacman --noconfirm -S --needed mingw-w64-x86_64-{toolchain,libtool,make,pkg-config,libsystre,doxygen,gnutls,graphviz,curl}
+
+    - name: Install MSYS packages
+      if: ${{ matrix.os-type == 'windows' && matrix.msys-env == 'MSYS' }}
+      run: |
+        pacman --noconfirm -S --needed msys2-devel gcc make curl
+
     - name: Install Ubuntu test sources
       run: |
         sudo add-apt-repository ppa:ubuntu-toolchain-r/test ;
@@ -395,6 +443,7 @@ jobs:
       with:
         path: libmicrohttpd-0.9.77
         key: ${{ matrix.os }}-${{ matrix.c-compiler }}-libmicrohttpd-0.9.77-pre-built
+      if: ${{ matrix.os-type != 'windows' }}
 
     - name: Build libmicrohttpd dependency (if not cached)
       run: |
@@ -403,10 +452,21 @@ jobs:
         cd libmicrohttpd-0.9.77 ;
         ./configure --disable-examples ;
         make ;
-      if: steps.cache-libmicrohttpd.outputs.cache-hit != 'true'
+      if: ${{ matrix.os-type != 'windows' && steps.cache-libmicrohttpd.outputs.cache-hit != 'true' }}
 
     - name: Install libmicrohttpd
       run: cd libmicrohttpd-0.9.77 ; sudo make install ;
+      if: ${{ matrix.os-type != 'windows' }}
+
+    - name: Build and install libmicrohttpd (Windows)
+      if: ${{ matrix.os-type == 'windows' }}
+      run: |
+        curl https://s3.amazonaws.com/libhttpserver/libmicrohttpd_releases/libmicrohttpd-0.9.77.tar.gz -o libmicrohttpd-0.9.77.tar.gz
+        tar -xzf libmicrohttpd-0.9.77.tar.gz
+        cd libmicrohttpd-0.9.77
+        ./configure --disable-examples --enable-poll=no
+        make
+        make install
       
     - name: Refresh links to shared libs
       run: sudo ldconfig ;

README.md

@@ -10,7 +10,6 @@ Copyright (C)  2011-2019  Sebastiano Merlino.
 
 # The libhttpserver reference manual
 ![GA: Build Status](https://github.com/etr/libhttpserver/actions/workflows/verify-build.yml/badge.svg)
-[![Build status](https://ci.appveyor.com/api/projects/status/ktoy6ewkrf0q1hw6/branch/master?svg=true)](https://ci.appveyor.com/project/etr/libhttpserver/branch/master)
 [![codecov](https://codecov.io/gh/etr/libhttpserver/branch/master/graph/badge.svg)](https://codecov.io/gh/etr/libhttpserver)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/1bd1e8c21f66400fb70e5a5ce357b525)](https://www.codacy.com/gh/etr/libhttpserver/dashboard?utm_source=github.com&utm_medium=referral&utm_content=etr/libhttpserver&utm_campaign=Badge_Grade)
 [![Gitter chat](https://badges.gitter.im/etr/libhttpserver.png)](https://gitter.im/libhttpserver/community)