[PATCH v2] ci: test stdatomic API

[David Marchand <david.marchand@redhat.com>]

Add some compilation tests with C11 atomics enabled.
The headers check can't be enabled (as gcc and clang don't provide
stdatomic before C++23).

Signed-off-by: David Marchand <david.marchand@redhat.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
---
Changelog from v1:
- following Thomas offlist review, tweaked coverage in
  test-meson-builds.sh to reduce the number of build targets,

---
 .ci/linux-build.sh            | 6 +++++-
 .github/workflows/build.yml   | 8 ++++++++
 devtools/test-meson-builds.sh | 4 +++-
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/.ci/linux-build.sh b/.ci/linux-build.sh
index e0b62bac90..b09df07b55 100755
--- a/.ci/linux-build.sh
+++ b/.ci/linux-build.sh
@@ -92,7 +92,11 @@ fi
 OPTS="$OPTS -Dplatform=generic"
 OPTS="$OPTS -Ddefault_library=$DEF_LIB"
 OPTS="$OPTS -Dbuildtype=$buildtype"
-OPTS="$OPTS -Dcheck_includes=true"
+if [ "$STDATOMIC" = "true" ]; then
+	OPTS="$OPTS -Denable_stdatomic=true"
+else
+	OPTS="$OPTS -Dcheck_includes=true"
+fi
 if [ "$MINI" = "true" ]; then
     OPTS="$OPTS -Denable_drivers=net/null"
     OPTS="$OPTS -Ddisable_libs=*"
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7a2ac0ceee..14328622fb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -30,6 +30,7 @@ jobs:
       REF_GIT_TAG: none
       RISCV64: ${{ matrix.config.cross == 'riscv64' }}
       RUN_TESTS: ${{ contains(matrix.config.checks, 'tests') }}
+      STDATOMIC: ${{ contains(matrix.config.checks, 'stdatomic') }}
 
     strategy:
       fail-fast: false
@@ -38,6 +39,12 @@ jobs:
           - os: ubuntu-20.04
             compiler: gcc
             mini: mini
+          - os: ubuntu-20.04
+            compiler: gcc
+            checks: stdatomic
+          - os: ubuntu-20.04
+            compiler: clang
+            checks: stdatomic
           - os: ubuntu-20.04
             compiler: gcc
             checks: debug+doc+examples+tests
@@ -241,6 +248,7 @@ jobs:
         > ~/env
         echo CC=ccache ${{ matrix.config.compiler }} >> ~/env
         echo DEF_LIB=${{ matrix.config.library }} >> ~/env
+        echo STDATOMIC=false >> ~/env
     - name: Load the cached image
       run: |
         docker load -i ~/.image/${{ matrix.config.image }}.tar
diff --git a/devtools/test-meson-builds.sh b/devtools/test-meson-builds.sh
index 605a855999..5c07063cbd 100755
--- a/devtools/test-meson-builds.sh
+++ b/devtools/test-meson-builds.sh
@@ -227,11 +227,13 @@ for c in gcc clang ; do
 	for s in static shared ; do
 		if [ $s = shared ] ; then
 			abicheck=ABI
+			stdatomic=-Denable_stdatomic=true
 		else
 			abicheck=skipABI # save time and disk space
+			stdatomic=-Denable_stdatomic=false
 		fi
 		export CC="$CCACHE $c"
-		build build-$c-$s $c $abicheck --default-library=$s
+		build build-$c-$s $c $abicheck $stdatomic --default-library=$s
 		unset CC
 	done
 done
-- 
2.41.0