Home/ Questions/Q 6063989
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-23T09:13:52+00:00

I’m an experienced Linux programmer, familiar with POSIX, stdio.h and so on, but totally

  • 0

I’m an experienced Linux programmer, familiar with POSIX, stdio.h and so on, but totally new to Mac programming. This week I’m attempting to get a piece of source code written by someone else a few years ago to work on 64-bit Snow Leopard. It’s a Photoshop plugin originally for CS3, now to be made to work with CS5. (Don’t ask me about CS4.) This plugin is built at the command line with a handwritten makefile using gcc.

The main roadblock today is the compiler complaining about several undeclared functions: FSRead, FSWrite, SetFPos, GetFPos, and more, all having to do with files. I’m pretty sure I have the right paths, options etc.

After two days grepping headers, googling, and trying to cheap hacks, I am stuck. Where are these functions defined? Are they standard Mac OS X library functions, or Photoshop SDK functions? Some google results suggest these functions are obsolete, “deprecated” but I guess by now truly gone. If that’s the case, what should I be using instead?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    After two days grepping headers, googling, and trying to cheap hacks, I am stuck. Where are these functions defined? Are they standard Mac OS X library functions, or Photoshop SDK functions?

    They are old Carbon APIs. You can use the Carbon framework, however Carbon is not ported to 64-bit systems. As Photoshop is 64bit, this simply won’t work.

    I’m not familiar with how Photoshop plugins are handled, but if you are looking for a direct replacement you would look at Core Foundation, a C API. In reality, you can also use the POSIX APIs. If Photoshop uses Cocoa and Objective-C, you can use the Foundation and AppKit family of APIs.

    • 0