my-pkgs/acpilight/xbacklight.c

#include <unistd.h>
#include <stdlib.h>

int main (int argc, char** argv)
{
  int i;
  char** args;
  args = malloc((argc+1)*sizeof(char*));
  for(i = 0; i < argc; ++i) {
    args[i] = argv[i];
  }
  args[argc] = NULL;

  execv("/opt/xbacklight", args);
  free(args);
  return 0;
}