Finding current executable's path without /proc/self/exe

Question

It seems to me that Linux has it easy with /proc/self/exe. But I\'d like to know if there is a convenient way to find the current application\'s directory in C/C++ with cros

Answer 1

The whereami library by Gregory Pakosz implements this for a variety of platforms, using the APIs mentioned in mark4o's post. This is most interesting if you "just" need a solution that works for a portable project and are not interested in the peculiarities of the various platforms.

At the time of writing, supported platforms are:

• Windows
• Linux
• Mac
• iOS
• Android
• QNX Neutrino
• FreeBSD
• NetBSD
• DragonFly BSD
• SunOS

The library consists of whereami.c and whereami.h and is licensed under MIT and WTFPL2. Drop the files into your project, include the header and use it:

#include "whereami.h"

int main() {
  int length = wai_getExecutablePath(NULL, 0, NULL);
  char* path = (char*)malloc(length + 1);
  wai_getExecutablePath(path, length, &dirname_length);
  path[length] = '\0';

  printf("My path: %s", path);

  free(path);
  return 0;
}