chore: formatter & clangd lsp option

CMakeLists.txt

@@ -61,10 +61,12 @@ set(CMAKE_INSTALL_MESSAGE NEVER)
 
 add_compile_options(
 	-Wall -Wextra -Wpedantic -Wshadow -Wconversion
-	-Wold-style-cast -Wnull-dereference -Wdouble-promotion
-	-Wformat=2 -Wfloat-equal -Woverloaded-virtual
+	-Wnull-dereference -Wdouble-promotion
+	-Wformat=2 -Wfloat-equal
 	-Wsign-conversion -Wredundant-decls -Wswitch
 	-Wunreachable-code
+	$<$<COMPILE_LANGUAGE:CXX>:-Wold-style-cast>
+	$<$<COMPILE_LANGUAGE:CXX>:-Woverloaded-virtual>
 )
 
 
@@ -188,4 +190,11 @@ if("m3shapes" IN_LIST ENABLE_MODULES)
 	if(TARGET m3shapesplugin)
 		set_target_properties(m3shapesplugin PROPERTIES INSTALL_RPATH "$ORIGIN")
 	endif()
+
+	# Silence warnings that come from m3shapes files we do not manage.
+	foreach(m3shapes_target m3shapes_core m3shapes_morph m3shapes_shapes m3shapes m3shapesplugin)
+		if(TARGET ${m3shapes_target})
+			target_compile_options(${m3shapes_target} PRIVATE -Wno-shadow -Wno-float-equal)
+		endif()
+	endforeach()
 endif()