如何编写自己的 Makefile（.mak 文件）？

Question

I want to know how to write a Makefile ( .mak -file).

I have 4 files:

1. myfunctions.h :

//myfunctions.h
#ifndef MYFUNCTIONS_H
#define MYFUNCTIONS_H

void show();

#endif

2. myfunctions.c :

//myfunctions.c
#include "myfunctions.h"

void show(){
printf("running!");
}

3. mymain.c :

//mymain.c
#include "myfunctions.h"

int main(int argc, char *argv[]) {
show();
}

4. mymake.mak :

//mymake.mak
myprogramm: mymain.c myfunctions.c  
    gcc -o myprogramm mymain.c myfunctions.c -I.

I run the mymake.mak with make mymakemak.mak and I get this error:

make: Nothing to be done for `mymake.mak'.

What am I doing wrong?

Answer 1

You need to use the file as the Makefile itself, not as the target. So you should be running

make -f mymake.mak

You can also rename mymake.mak to Makefile or makefile and re-run make .

What make is trying to do here is create a target called mymake.mak . Since mymake.mak already exists, make thinks its job is done and it exits.