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Handling header files dependencies with cmake

I have sample program dir having main.c main.h and CMakeLists.txt

main.h contents are

#ifndef MAIN_H
#define MAIN_H
int t=3;
int y=2;
#endif

main.c contents are

#include <main.h>
#include<stdio.h>
int main(){

  printf("%d apple",t);
}

and CMakeLists.txt

PROJECT( test )
AUX_SOURCE_DIRECTORY(. test_SRCS)
include_directories(.)
ADD_EXECUTABLE (main ${test_SRCS})

but cmake is not rebuilding main.c on modification of header file.
I want it to auto-generate header file dependency.
Is it possible using cmake ?

if not is there any other tool which can do that ?

Answer 1

As mentioned in my comment, I have tried out your example and things were working fine: if main.h was modified then main.c would be recompiled.

My installation of CMake (version 2.8.0) told me to add

cmake_minimum_required(VERSION 2.8)

to the CMakeLists.txt file, but that is all of the adjustments I needed.