debug CI

.github/workflows/main-app.yml

@@ -57,6 +57,20 @@ jobs:
       with:
         name: fluidonly
 
+    - name: Debug CI configure
+      run: >-
+        cmake
+        -S ${{github.workspace}}/.github/workflows/testcpp
+        -B ${{github.workspace}}/build-testcpp
+        -DCMAKE_BUILD_TYPE=$BUILD_TYPE
+
+    - name: Debug CI build
+      working-directory: ${{github.workspace}}/build-testcpp
+      env:
+        VERBOSE: 1
+      run: |
+        cmake --build .
+
     - name: Code make build dir
       run: mkdir -p ${{github.workspace}}/build
 

.github/workflows/testcpp/CMakeLists.txt

@@ -0,0 +1,16 @@
+# This file is part of HemeLB and is Copyright (C)
+# the HemeLB team and/or their institutions, as detailed in the
+# file AUTHORS. This software is provided under the terms of the
+# license in the file LICENSE.
+
+cmake_minimum_required (VERSION 3.13)
+
+project(testcpp)
+
+# Set the language standard strictly.
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+# Config XML checker (confcheck)
+add_executable(testprog test.cpp)

.github/workflows/testcpp/test.cpp

@@ -0,0 +1,3 @@
+int main() {
+  return 0;
+}