misc: changes from a long time ago

CMakeLists.txt

@@ -45,7 +45,14 @@ target_include_directories(${kernel_exe_name} PRIVATE
 target_compile_options(${kernel_exe_name} PRIVATE
 	-nostdlib -ffreestanding
 	-Wall -Werror -pedantic -Wno-language-extension-token -Wno-unused-function  -Wno-gnu-statement-expression
-	-O2 -g -fPIC -Iinclude -Iarch/${kernel_arch}/include -Ilibc/include)
+	-g -fPIC -Iinclude -Iarch/${kernel_arch}/include -Ilibc/include)
+
+add_custom_command(
+	TARGET ${kernel_exe_name}
+	POST_BUILD
+	COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:${kernel_exe_name}> $<TARGET_FILE:${kernel_exe_name}>.debug
+	COMMAND ${CMAKE_STRIP} -g $<TARGET_FILE:${kernel_exe_name}>)
+
 target_link_libraries(${kernel_exe_name} -nostdlib -ffreestanding -lgcc)
 target_compile_definitions(${kernel_exe_name} PRIVATE BUILD_ID="0")