Question

I’m trying to read an ” Makefile ” in C/C++

it works by doing: system("make -C /Users/MyNAME/Desktop/Folder flash");

” make flash ” is the command to run the file and /Users/MyNAME/Desktop/Folder is the

file path. This code works, but how can i make the file path locally, to read from the same

debug folder ( where the program is ) without writing it manually ?

Answer 1

You probably want the int chdir(const char *path); function. Example:

#include <unistd.h>

/* ... */

chdir("/Users/MyNAME/Desktop/Folder");
system("make flash");

There’s a lot of other useful functions in <unistd.h>, which should be present on any POSIX-based system. Check here for the big list.

EDIT: If the path isn’t constant, you’ll probably want to provide it as a command line argument to your program:

#include <unistd.h>
#include <stdio.h>

/* ... */

int main(int argc, char* argv[])
{
    if(argc < 2)
    {
        fprintf(stderr, "Usage: %s <path>\n", argv[0]);
        return 1;
    }

    chdir(argv[1]);
    system("make flash");

    /* ... */

    return 0;
}

Run it with a line like ./foo /Users/MyNAME/Desktop/Folder.