GHA: add MSYS, mingw-w64, Cygwin jobs

- re-implement autotools MSYS and Cygwin AppVeyor jobs in GHA.
  Now build with SSL and PSL to improve test coverage.
- re-implement MSYS2 mingw-w64 gcc 13 AppVeyor job in GHA.
  `CMake, mingw-w64, gcc 13, Debug, x64, Schannel, Static, Unicode`
- add new cmake Cygwin job (build-only).
- enable `-j14` parallelism when running tests.
- delete the 5 migrated jobs from AppVeyor CI.
- add 2 build-only mingw-w64 builds, gcc Release and clang OpenSSL.
- also enable brotli, libssh2, nghttp2 for more test coverage.

These jobs offer better performance, more flexibility and
parallelization compared to the AppVeyor ones they replace. It also
offloads AppVeyor, allowing to iterate faster. They also appear more
reliable than e.g. Azure Windows jobs, where runners are prone to fail
[1].

Closes #13599

[1]:
`Exit code 143 returned from process: file name 'C:\Windows\system32\docker.EXE',
arguments 'exec -i   6b13a669c6dfe7fb9f59414369872fd64d61c7182f880c3d39c135cb4c115c8f
C:\__a\externals\node\bin\node.exe C:\__w\_temp\containerHandlerInvoker.js'.`

.github/labeler.yml

@@ -255,4 +255,4 @@ Windows:
   - all:
       - changed-files:
           - any-glob-to-all-files:
-              - '{appveyor.*,CMake/Platforms/WindowsCache.cmake,lib/*win32*,lib/curl_multibyte.*,lib/rename.*,lib/vtls/schannel*,m4/curl-schannel.m4,projects/**,src/tool_doswin.c,winbuild/**,libcurl.def}'
+              - '{appveyor.*,.github/workflows/windows.yml,CMake/Platforms/WindowsCache.cmake,lib/*win32*,lib/curl_multibyte.*,lib/rename.*,lib/vtls/schannel*,m4/curl-schannel.m4,projects/**,src/tool_doswin.c,winbuild/**,libcurl.def}'

.github/workflows/windows.yml

@@ -0,0 +1,280 @@
+# Copyright (C) Viktor Szakats
+#
+# SPDX-License-Identifier: curl
+
+name: windows
+
+on:
+  push:
+    branches:
+      - master
+      - '*/ci'
+    paths-ignore:
+      - '**/*.md'
+      - '.azure-pipelines.yml'
+      - '.circleci/**'
+      - '.cirrus.yml'
+      - 'appveyor.*'
+      - 'packages/**'
+      - 'plan9/**'
+      - 'projects/**'
+      - 'winbuild/**'
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - '**/*.md'
+      - '.azure-pipelines.yml'
+      - '.circleci/**'
+      - '.cirrus.yml'
+      - 'appveyor.*'
+      - 'packages/**'
+      - 'plan9/**'
+      - 'projects/**'
+      - 'winbuild/**'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+permissions: {}
+
+jobs:
+  cygwin:
+    name: "cygwin (${{ matrix.build }}, ${{ matrix.platform }}, ${{ matrix.config }})"
+    runs-on: windows-latest
+    timeout-minutes: 45
+    env:
+      SHELLOPTS: 'igncr'
+    strategy:
+      matrix:
+        include:
+          - { build: 'automake', platform: 'x86_64', tflags: '', config: '--enable-debug --disable-threaded-resolver' }
+          - { build: 'cmake'   , platform: 'x86_64', tflags: '', config: '-DCURL_USE_OPENSSL=ON' }
+      fail-fast: false
+    steps:
+      - run: git config --global core.autocrlf input
+      - uses: actions/checkout@v4
+      - uses: cygwin/cygwin-install-action@v4
+        with:
+          platform: ${{ matrix.platform }}
+          # https://cygwin.com/cgi-bin2/package-grep.cgi
+          packages: autoconf libtool ${{ matrix.build }} gcc-core gcc-g++ binutils make libssl-devel zlib-devel libbrotli-devel libnghttp2-devel libpsl-devel libssh2-devel
+          site: https://mirrors.kernel.org/sourceware/cygwin/
+
+      - name: 'autotools configure'
+        if: ${{ matrix.build == 'automake' }}
+        timeout-minutes: 5
+        shell: C:\cygwin\bin\bash.exe '{0}'
+        run: |
+          export PATH="/usr/bin:$(cygpath ${SYSTEMROOT})/system32"
+          autoreconf -fi
+          mkdir bld && cd bld && ../configure --enable-warnings --enable-werror \
+            --prefix="${HOME}"/install \
+            --enable-websockets \
+            --with-openssl \
+            --with-libssh2 \
+            ${{ matrix.config }} || { tail -n 1200 config.log; false; }
+
+      - name: 'autotools build'
+        if: ${{ matrix.build == 'automake' }}
+        timeout-minutes: 10
+        shell: C:\cygwin\bin\bash.exe '{0}'
+        run: |
+          make -C bld -j3 V=1 install
+          find . -name '*.exe' -o -name '*.dll'
+          bld/src/curl.exe --disable --version
+
+      - name: 'autotools build examples'
+        if: ${{ matrix.build == 'automake' }}
+        timeout-minutes: 5
+        shell: C:\cygwin\bin\bash.exe '{0}'
+        run: |
+          make -C bld -j3 V=1 examples
+
+      - name: 'autotools build tests'
+        if: ${{ matrix.build == 'automake' }}
+        timeout-minutes: 10
+        shell: C:\cygwin\bin\bash.exe '{0}'
+        run: |
+          make -C bld -j3 -C tests V=1
+
+      - name: 'autotools run tests'
+        if: ${{ matrix.build == 'automake' && matrix.tflags != 'skip' }}
+        timeout-minutes: 40
+        shell: C:\cygwin\bin\bash.exe '{0}'
+        run: |
+          export TFLAGS='-j8 ${{ matrix.tflags }}'
+          if [ -x "$(cygpath -u "${SYSTEMROOT}/System32/curl.exe")" ]; then
+            TFLAGS+=" -ac $(cygpath -u "${SYSTEMROOT}/System32/curl.exe")"
+          fi
+          make -C bld -j3 V=1 test-ci
+
+      - name: 'cmake configure'
+        if: ${{ matrix.build == 'cmake' }}
+        timeout-minutes: 5
+        shell: C:\cygwin\bin\bash.exe '{0}'
+        run: |
+          export PATH="/usr/bin:$(cygpath ${SYSTEMROOT})/system32"
+          cmake -B bld ${options} ${{ matrix.config }} \
+            "-DCMAKE_C_FLAGS=${cflags}" \
+            -DCMAKE_UNITY_BUILD=ON \
+            -DCURL_WERROR=ON \
+            -DBUILD_EXAMPLES=ON \
+            -DENABLE_WEBSOCKETS=ON \
+            -DCURL_BROTLI=ON -DUSE_NGHTTP2=ON
+
+      - name: 'cmake build'
+        if: ${{ matrix.build == 'cmake' }}
+        timeout-minutes: 10
+        shell: C:\cygwin\bin\bash.exe '{0}'
+        run: |
+          cmake --build bld --config '${{ matrix.type }}' --parallel 3
+          [[ '${{ matrix.config }}' != *'BUILD_SHARED_LIBS=OFF'* ]] && cp -f -p bld/lib/*.dll bld/src/
+          find . -name '*.exe' -o -name '*.dll'
+          bld/src/curl.exe --disable --version
+
+  msys2:
+    name: "msys2 (${{ matrix.build }}, ${{ matrix.sys }}, ${{ matrix.env }}, ${{ matrix.config }})"
+    runs-on: windows-latest
+    timeout-minutes: 45
+    strategy:
+      matrix:
+        include:
+          - { build: 'autotools', sys: 'msys'   , env: 'x86_64'      , tflags: '!19                !1233'            , config: '--enable-debug --disable-threaded-resolver --disable-proxy' }
+          - { build: 'autotools', sys: 'msys'   , env: 'x86_64'      , tflags: '!19 !504 !704 !705 !1233'            , config: '--enable-debug --disable-threaded-resolver' }
+          - { build: 'autotools', sys: 'msys'   , env: 'x86_64'      , tflags: '!19 !504 !704 !705 !1233'            , config: '' }
+          # FIXME: WebSockets test results ignored due to frequent failures on native Windows:
+          - { build: 'cmake'    , sys: 'mingw64', env: 'x86_64'      , tflags: '!19 !504 !704 !705 !1233 ~2301 ~2305', config: '-DENABLE_DEBUG=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON', type: 'Debug' }
+          - { build: 'cmake'    , sys: 'mingw64', env: 'x86_64'      , tflags: 'skip'                                , config: '-DENABLE_DEBUG=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_SCHANNEL=ON -DENABLE_UNICODE=ON', type: 'Release' }
+          - { build: 'cmake'    , sys: 'clang64', env: 'clang-x86_64', tflags: 'skip'                                , config: '-DENABLE_DEBUG=ON -DBUILD_SHARED_LIBS=OFF -DCURL_USE_OPENSSL=ON -DENABLE_UNICODE=OFF', type: 'Release' }
+      fail-fast: false
+    steps:
+      - run: git config --global core.autocrlf input
+      - uses: actions/checkout@v4
+      - uses: msys2/setup-msys2@v2
+        if: ${{ matrix.sys == 'msys' }}
+        with:
+          msystem: ${{ matrix.sys }}
+          # https://packages.msys2.org/search
+          install: gcc ${{ matrix.build }} make openssl-devel zlib-devel brotli-devel libnghttp2-devel libpsl-devel libssh2-devel
+      - uses: msys2/setup-msys2@v2
+        if: ${{ matrix.sys != 'msys' }}
+        with:
+          msystem: ${{ matrix.sys }}
+          install: >-
+            mingw-w64-${{ matrix.env }}-cc
+            mingw-w64-${{ matrix.env }}-${{ matrix.build }} make
+            mingw-w64-${{ matrix.env }}-openssl
+
+      - name: 'autotools configure'
+        if: ${{ matrix.build == 'autotools' }}
+        timeout-minutes: 5
+        shell: msys2 {0}
+        run: |
+          autoreconf -fi
+          mkdir bld && cd bld && ../configure --enable-warnings --enable-werror \
+            --prefix="${HOME}"/install \
+            --enable-websockets \
+            --with-openssl \
+            --with-libssh2 \
+            ${{ matrix.config }} || { tail -n 1200 config.log; false; }
+
+      - name: 'autotools build'
+        if: ${{ matrix.build == 'autotools' }}
+        timeout-minutes: 10
+        shell: msys2 {0}
+        run: |
+          make -C bld -j3 V=1 install
+          find . -name '*.exe' -o -name '*.dll'
+          bld/src/curl.exe --disable --version
+
+      - name: 'autotools build examples'
+        if: ${{ matrix.build == 'autotools' }}
+        timeout-minutes: 5
+        shell: msys2 {0}
+        run: |
+          make -C bld -j3 V=1 examples
+
+      - name: 'autotools build tests'
+        if: ${{ matrix.build == 'autotools' }}
+        timeout-minutes: 10
+        shell: msys2 {0}
+        run: |
+          make -C bld -j3 -C tests V=1
+
+      - name: 'autotools run tests'
+        if: ${{ matrix.build == 'autotools' && matrix.tflags != 'skip' }}
+        timeout-minutes: 30
+        shell: msys2 {0}
+        run: |
+          export TFLAGS='-j14 ${{ matrix.tflags }}'
+          if [ -x "$(cygpath -u 'C:/msys64/usr/bin/curl.exe')" ]; then
+            TFLAGS+=" -ac $(cygpath -u 'C:/msys64/usr/bin/curl.exe')"
+          fi
+          make -C bld -j3 V=1 test-ci
+
+      - name: 'cmake configure'
+        if: ${{ matrix.build == 'cmake' }}
+        timeout-minutes: 5
+        shell: msys2 {0}
+        run: |
+          if [[ '${{ matrix.env }}' = 'clang'* ]]; then
+            options='-DCMAKE_C_COMPILER=clang'
+          else
+            options='-DCMAKE_C_COMPILER=gcc'
+          fi
+          cflags='-Wno-deprecated-declarations'
+          if [ '${{ matrix.test }}' = 'uwp' ]; then
+            options+=' -DCMAKE_SYSTEM_NAME=WindowsStore -DCMAKE_SYSTEM_VERSION=10.0'
+            pacman --noconfirm --ask 20 --noprogressbar --sync --needed 'mingw-w64-${{ matrix.env }}-winstorecompat-git'
+            specs="$(realpath gcc-specs-uwp)"
+            gcc -dumpspecs | sed -e 's/-lmingwex/-lwindowsapp -lmingwex -lwindowsapp -lwindowsappcompat/' -e 's/-lmsvcrt/-lmsvcr120_app/' > "${specs}"
+            cflags+=" -specs=${specs} -DWINSTORECOMPAT -DWINAPI_FAMILY=WINAPI_FAMILY_APP"
+            # CMake (as of v3.26.4) gets confused and applies the MSVC rc.exe command-line
+            # template to windres. Reset it to the windres template manually:
+            rcopts='<CMAKE_RC_COMPILER> -O coff <DEFINES> <INCLUDES> <FLAGS> <SOURCE> <OBJECT>'
+          else
+            rcopts=''
+          fi
+          [ '${{ matrix.type }}' = 'Debug' ] && options+=' -DCMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG='
+          [ '${{ matrix.type }}' = 'Release' ] && options+=' -DCMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE='
+          [ '${{ matrix.type }}' = 'Release' ] && [[ '${{ matrix.config }}' = *'ENABLE_DEBUG=ON'* ]] && cflags+=' -DDEBUGBUILD'
+          cmake -B bld ${options} ${{ matrix.config }} \
+            "-DCMAKE_C_FLAGS=${cflags}" \
+            "-DCMAKE_RC_COMPILE_OBJECT=${rcopts}" \
+            "-DCMAKE_BUILD_TYPE=${{ matrix.type }}" \
+            -DCMAKE_UNITY_BUILD=ON \
+            -DCURL_WERROR=ON \
+            -DBUILD_EXAMPLES=ON \
+            -DENABLE_WEBSOCKETS=ON \
+            -DCURL_BROTLI=ON -DUSE_NGHTTP2=ON
+
+      - name: 'cmake build'
+        if: ${{ matrix.build == 'cmake' }}
+        timeout-minutes: 10
+        shell: msys2 {0}
+        run: |
+          cmake --build bld --config '${{ matrix.type }}' --parallel 3
+          [[ '${{ matrix.config }}' != *'BUILD_SHARED_LIBS=OFF'* ]] && cp -f -p bld/lib/*.dll bld/src/
+          find . -name '*.exe' -o -name '*.dll'
+          bld/src/curl.exe --disable --version
+
+      - name: 'cmake build tests'
+        if: ${{ matrix.build == 'cmake' }}
+        timeout-minutes: 10
+        shell: msys2 {0}
+        run: |
+          cmake --build bld --config '${{ matrix.type }}' --parallel 3 --target testdeps
+
+      - name: 'cmake run tests'
+        if: ${{ matrix.build == 'cmake' && matrix.tflags != 'skip' }}
+        timeout-minutes: 40
+        shell: msys2 {0}
+        run: |
+          export TFLAGS='-j14 ${{ matrix.tflags }}'
+          if [ -x "$(cygpath -u 'C:/msys64/usr/bin/curl.exe')" ]; then
+            TFLAGS+=" -ac $(cygpath -u 'C:/msys64/usr/bin/curl.exe')"
+          fi
+          ls bld/lib/*.dll >/dev/null 2>&1 && cp -f -p bld/lib/*.dll bld/tests/libtest/
+          cmake --build bld --config '${{ matrix.type }}' --target test-ci