CI: Update for meson build

We now include a Meson build that uses Clang + lld as
the build system to catch bugs and warnings that our
traditional autotools + GCC builds might miss.

We no longer build a docker image, instead we directly
execute the fvwm3-build container as a GitHub Action.
GH Actions have been factored out into a common set, and are
used as a matrix set to apply to Ubuntu (glibc) and Alpine (musl).

The Go version in fvwm3-build has been updated to enable use
with meson and eliminate the need for a complex envvar setup
and invocation, however older golang is still supported (>=1.14);
we're just relying on users to tell us if something is broken.

While the issue with LTO builds has been resolved in this PR, it was
incidental and the introduced changes will catch LTO errors before
they make it into a release.

Closes: fvwmorg#1056
Co-authored-by: Thomas Adam <[email protected]>
Signed-off-by: Matt Jolly <[email protected]>

.github/workflows/ccpp.yml

@@ -10,13 +10,44 @@ on:
 jobs:
  build:
  runs-on: ubuntu-latest
+ container:
+ image: ${{ matrix.os == 'alpine' && 'fvwmorg/fvwm3-build-alpine:latest' || 'fvwmorg/fvwm3-build:latest' }}
+ env:
+ GO111MODULE: "on"
+
+ strategy:
+ matrix:
+ os: [ubuntu-latest, alpine]
+ build-system: [autotools, meson]
+ compiler: [gcc, clang]
 
  steps:
- - uses: actions/checkout@v2
- - name: Pulling docker image
- run: docker pull fvwmorg/fvwm3-build:latest
- - name: Build Package
- run: 'docker build -t fvwm3 .'
+ - name: Checkout repository
+ uses: actions/checkout@v4
+
+ - name: Set git safe directory
+ run: git config --global --add safe.directory ${GITHUB_WORKSPACE}
+
+ - name: Configure and Build
+ run: |
+ if [ "${{ matrix.build-system }}" = "autotools" ]; then
+ if [ "${{ matrix.compiler }}" = "gcc" ]; then
+ export CFLAGS="-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing"
+ else
+ export CC_LD=lld
+ fi
+ export CC=${{ matrix.compiler }}
+ ./autogen.sh && ./configure --enable-mandoc --enable-golang && make -j
+ fi
+ if [ "${{ matrix.build-system }}" = "meson" ]; then
+ if [ "${{ matrix.compiler }}" = "gcc" ]; then
+ export CFLAGS="-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing"
+ else
+ export CC_LD=lld
+ fi
+ export CC=${{ matrix.compiler }}
+ meson setup builddir -Dhtmldoc=true -Dmandoc=true && ninja -C builddir
+ fi
 
  notification:
  runs-on: ubuntu-20.04
@@ -26,7 +57,7 @@ jobs:
  uses: Gottox/[email protected]
  if: github.event_name == 'pull_request'
  with:
- server: "irc.libera.chat"
+ server: irc.libera.chat
  notice: false
  channel: "#fvwm"
  nickname: fvwm3-gh-pr
@@ -35,7 +66,7 @@ jobs:
  uses: Gottox/[email protected]
  if: github.event_name == 'create' && github.event.ref_type == 'tag'
  with:
- server: "irc.libera.chat"
+ server: irc.libera.chat
  notice: false
  channel: "#fvwm"
  nickname: fvwm-gh