how to add "L" literal prefix to add_definition in cmake

I wanted to append L literal prefix to c++ macro with cmake add_definitions

I wanted to build like below "FIX" macro.

#define FIX L"D:/test/test"

so I tried

add_definitions("-DFIX=L\"\"D:/test/test\"")

I think it is right. but result was very weird.

this is my result.
enter image description here

as you can see, it correctly makes L"D:/test/test"

but it was appended other macro options what I didn't concatenated on back of string. I don't know why they appended to my macro.( for example \DWIN32)

I also tried many things. but I didn't find right solution yet.

could you give me a advice?

thank you.

I tried to find question on the internet community

but there was no solution.

so I tried

add_definitions("-DFIX=L\"\"D:/test/test\"")
add_definitions(-DFIX=L\"D:/test/test")
add_definitions("-DFIX=L\"D:/test/test\"")

but they was not a solution.

Just add the compile definition as it is. No -D. No extra quotes.

add_compile_definitions(FIX=L"D:/test/test")

Command add_definitions has been superseded by add_compile_definition. See CMake docs. Over add_compile_definitions prefer target_compile_definitions.

MCVE:

#CmakeLists.txt
cmake_minimum_required(VERSION 3.11)
project(test)
add_executable(main main.c)
target_compile_definitions(main PUBLIC FIX=L"D:/test/test")

#main.c
#include <stdio.h>
#include <wchar.h>
#include <locale.h>
int main() {
	setlocale(LC_ALL, "");
	wchar_t *s = FIX;
	printf("%ls\n", s);
}

# output
$ cmake -S. -Bbuild && cmake --build build && ./build/main 
-- Configuring done (0.0s)
-- Generating done (0.0s)
-- Build files have been written to: ../build
[ 50%] Building C object CMakeFiles/main.dir/main.c.o
[100%] Linking C executable main
[100%] Built target main
D:/test/test

before I tell solution.

I appreciate with your kind answer
@kamilCuk @Friedrich @starball

I just finally founded my solution

add_definitions(-DFIX=L\"\"D:/test/test\"\")

It clearly shows L"D/test/test".

I think "" is keyword expression. I don't know why exactly.

when I appended L to predefined literal, quotes are gone somewhere.

so many kind answer tell me a solution. it doesn't work for me. I don't know why? is it version is wrong? (my version is 3.20.3 cmake)