diff --git a/.github/workflows/ci-alpine.yml b/.github/workflows/ci-alpine.yml
new file mode 100644
index 00000000..f5dc03ac
--- /dev/null
+++ b/.github/workflows/ci-alpine.yml
@@ -0,0 +1,50 @@
+name: "Checks (alpine, many platforms)"
+
+on: [push, pull_request]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref }}
+  cancel-in-progress: true
+
+jobs:
+  linux-alpine:
+    runs-on: ubuntu-latest
+    name: linux-alpine-${{ matrix.platform }}
+    # abort if x86_64 fails
+    continue-on-error: ${{ matrix.platform != 'x86_64' }}
+    strategy:
+      fail-fast: true
+      matrix:
+        platform: ['x86_64','x86','armhf','armv7','aarch64','ppc64le','riscv64','s390x']
+    steps:
+      - uses: actions/checkout@v4
+      - uses: jirutka/setup-alpine@v1
+        with:
+          # riscv64 currently requires 'edge'
+          branch: edge
+          arch: ${{ matrix.platform }}
+          packages: >
+            build-base
+            meson
+            libev-dev
+            ragel
+            glib-dev
+            lua5.1-dev
+            zlib-dev
+            bzip2-dev
+            pkgconf
+            openssl-dev
+            gnutls-dev
+            libidn-dev
+            libunwind-dev
+            python3
+            py3-curl
+      - name: meson setup
+        shell: alpine.sh {0}
+        run: meson setup mesonbuilddir
+      - name: meson compile
+        shell: alpine.sh {0}
+        run: meson compile -C mesonbuilddir
+      - name: meson test
+        shell: alpine.sh {0}
+        run: meson test -C mesonbuilddir -v
diff --git a/.github/workflows/ci-linux.yml b/.github/workflows/ci-linux.yml
new file mode 100644
index 00000000..0913306f
--- /dev/null
+++ b/.github/workflows/ci-linux.yml
@@ -0,0 +1,67 @@
+name: "Checks (Ubuntu: gcc+clang)"
+
+on: [push, pull_request]
+
+concurrency:
+  group: ${{github.workflow}}-${{github.head_ref}}
+  cancel-in-progress: true
+
+jobs:
+  linux-build-docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install dependencies
+        run: |
+          pkgs=(
+            ruby
+            ruby-nokogiri
+            ruby-kramdown
+            libxml2-utils
+          )
+          sudo apt-get install "${pkgs[@]}"
+      - name: Build docs
+        run: |
+          mkdir -p out
+          ruby doc/compile.rb out
+          cp doc/*.css doc/*.js out
+      - uses: actions/upload-artifact@v4
+        with:
+          name: lighttpd2-docs
+          path: out
+
+  linux-ubuntu:
+    runs-on: ubuntu-latest
+    name: linux-ubuntu-${{ matrix.compiler }}
+    strategy:
+      matrix:
+        compiler: ['gcc', 'clang']
+    steps:
+      - uses: actions/checkout@v4
+      - if: ${{ matrix.compiler == 'clang' }}
+        uses: egor-tensin/setup-clang@v1
+      - name: Install dependencies
+        run: |
+          pkgs=(
+            meson
+            libev-dev
+            ragel
+            libglib2.0-dev
+            liblua5.1-dev
+            zlib1g-dev
+            libbz2-dev
+            pkg-config
+            libssl-dev
+            libgnutls28-dev
+            libidn-dev
+            libunwind8-dev
+            python3
+            python3-pycurl
+          )
+          sudo apt-get install "${pkgs[@]}"
+      - name: meson setup
+        run: meson setup mesonbuilddir
+      - name: meson compile
+        run: meson compile -C mesonbuilddir
+      - name: meson test
+        run: meson test -C mesonbuilddir -v
diff --git a/.github/workflows/ci-macos.yml b/.github/workflows/ci-macos.yml
new file mode 100644
index 00000000..4473d5ac
--- /dev/null
+++ b/.github/workflows/ci-macos.yml
@@ -0,0 +1,52 @@
+name: "Checks (macOS)"
+
+on: [push, pull_request]
+
+concurrency:
+  group: ${{github.workflow}}-${{github.head_ref}}
+  cancel-in-progress: true
+
+jobs:
+  macOS:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install dependencies
+        run: |
+          pkgs=(
+            meson
+            libev
+            ragel
+            glib
+            lua@5.1
+            zlib
+            bzip2
+            openssl@3
+            gnutls
+            libidn
+            python3
+            python-pycurl
+            md5sha1sum
+          )
+          brew install "${pkgs[@]}"
+      - name: meson setup
+        run: meson setup -D unwind=false mesonbuilddir
+      - name: meson compile
+        run: meson compile -C mesonbuilddir
+      - name: prepare environment for tests
+        run: |
+          sudo ifconfig lo0 alias 127.0.0.2 up
+
+          # try to create a tmpdir with a short relative path (for shorter unix socket paths)
+          NEWTMPDIR=~/tmp
+          ln -sf "${TMPDIR}" "${NEWTMPDIR}"
+          echo "TMPDIR=$NEWTMPDIR" >> "$GITHUB_ENV"
+          echo "PATH=$(brew --prefix python)/libexec/bin:$PATH" >> "$GITHUB_ENV"
+
+          if [ ! -f $(brew --prefix python)/libexec/bin/python3 ]; then
+            # the brew path only provides "python", not "python3"...
+            ln -s python $(brew --prefix python)/libexec/bin/python3
+          fi
+      - name: meson test
+        run: |
+          meson test -C mesonbuilddir -v