Hi,

I searched the FPC Programmer's Guide and Users Guide, and nowhere is there a definitional of description explaining the difference.

So here is to anybody that knows: What is the difference between a target x86-64, target x86_64 and a target x64?

eg:
Here is the output of my FPC compiler under Ubuntu 10.04 (64-bit) using FPC 2.4.5 (latest fixes branch).

$ fpc -i
----------------------------------
Free Pascal Compiler version 2.4.5

Compiler Date : 2011/07/08
Compiler CPU Target: x86_64

Supported targets:
Linux for x86-64
FreeBSD for x86-64
Win64 for x64
Darwin for x86_64
Solaris for x86-64 (under development)
----------------------------------

There are 3 different 64-bit targets listed, but what is the difference between them. Is is this just a typo somewhere in the compiler (though I doubt that).

Regards,
- Graeme -

In our previous episode, Graeme Geldenhuys said:

Afaik

Human readable OSS designation, machine readable OSS designation (for use in filenames), Microsoft designation.

Graeme Geldenhuys wrote

So here is to anybody that knows: What is the difference between a target x86-64, target x86_64 and a target x64?

None. The target names are simple strings in the compiler/i_*.pas files and unrelated to the code generation.

Jonas