Do coverage in clang so it can be done in release mode

Author: TrentHouliston

.github/workflows/sonarcloud.yaml

@@ -53,7 +53,9 @@ jobs:
             -GNinja \
             -DCMAKE_C_COMPILER_LAUNCHER=ccache \
             -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-            -DCMAKE_BUILD_TYPE=Debug \
+            -DCMAKE_C_COMPILER=clang \
+            -DCMAKE_CXX_COMPILER=clang++ \
+            -DCMAKE_BUILD_TYPE=Release \
             -DBUILD_TESTS=ON \
             -DCI_BUILD=ON \
             -DENABLE_COVERAGE=ON \

src/CMakeLists.txt

@@ -42,8 +42,15 @@ if(ENABLE_COVERAGE)
   if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
     message(WARNING "Coverage is enabled but not build in debug mode. Coverage results may be misleading.")
   endif()
-  target_compile_options(nuclear PUBLIC -fprofile-arcs -ftest-coverage -fprofile-abs-path -fprofile-update=atomic)
-  target_link_options(nuclear PUBLIC -fprofile-arcs)
+  if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    target_compile_options(nuclear PUBLIC -fprofile-arcs -ftest-coverage -fprofile-abs-path -fprofile-update=atomic)
+    target_link_options(nuclear PUBLIC -fprofile-arcs)
+  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    target_compile_options(nuclear PUBLIC -fprofile-instr-generate -fcoverage-mapping)
+    target_link_options(nuclear PUBLIC -fprofile-instr-generate)
+  else()
+    message(FATAL_ERROR "Coverage is not supported for the current compiler.")
+  endif()
 endif(ENABLE_COVERAGE)
 
 # Enable warnings, and all warnings are errors