gcc-8 is the C compiler

tools/gcc-8.dds

@@ -1,6 +1,9 @@
 Compiler-ID: GNU
 C++-Version: C++17
+C-Compiler: gcc-8
 C++-Compiler: g++-8
-Flags: -D SPDLOG_COMPILED_LIB -fconcepts
+Flags: -D SPDLOG_COMPILED_LIB -fconcepts -Werror=return-type
 Optimize: True
+# Debug:  True
+# Link-Flags: -fsanitize=address
 Compiler-Launcher: ccache