Disable uninitialised warnings for MSYS/MinGW CI build

.github/workflows/ci-build.yml

@@ -377,7 +377,7 @@ jobs:
         cd build
 
         echo "::group::CMake"
-        cmake .. -G"MSYS Makefiles"
+        cmake .. -DOPTION_NO_WARN_UNINIT=1 -G"MSYS Makefiles"
         echo "::endgroup::"
 
         echo "::group::Build"

cmake/CompileFlags.cmake

@@ -158,6 +158,10 @@ macro(compile_flags)
                 endif()
             endif()
         endif()
+
+        if (OPTION_NO_WARN_UNINIT)
+            add_compile_options(-Wno-maybe-uninitialized -Wno-uninitialized)
+        endif (OPTION_NO_WARN_UNINIT)
     elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
         add_compile_options(
             -Wall