Tests/BuildDepends/Project/ninjadep.cpp - third_party/github.com/Kitware/CMake - Git at Google

 #include <stdio.h>

 #include "dir/header.h"

 int main()
 {
   printf("HEADER_STRING: %s\n", HEADER_STRING);
 }
	#include <stdio.h>

	#include "dir/header.h"

	int main()
	{
	printf("HEADER_STRING: %s\n", HEADER_STRING);
	}