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From: "Keith Willshaw" <keith_willshaw@compuserve.com>
Subject: Re: [Fwd: F22 completes 11% of its Flight tests]
Date: 2000/01/17
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Gautier wrote in message <38826BCE.6FB484B3@maths.unine.ch>...

>
>Just curious:
> * Do you have also _one_ makefile ?

Yes

> * Is there no conditional defines in the source code files that make
differences
>   between the Windows NT/9x ,SG Irix, Solaris, Dec Unix, RS6000 and HP
Unix
>   platforms ?
>

We use machine dependent libraries to handle the
differences between implementations. This is mainly
for issues like  FileIO Graphics etc.

The idea is that the calls to those machine dependent libraries are
the same what ever implementation is required. Once a set
of these libraries is stable they rarely change

In reality there are two main graphics libraries
Windows and Motif and the  file I/O parts are
also essentially split between UNIX and Win9x
with same differences in the RS implementation

>I ask it because many resources (in C) on the Web claim to be portable
>but in fact are only ported on many platforms, with conditional defines
>that switch even basic type definitions, memory management etc.
>e.g. Info-Zip stuff.
>


No thats a pain

We actually have 4 develiopers sharing the same source
code mounted off our main Sun Server.

Each has a Unix Box of different type and a PC

They simply compile for each target from the same code.
There's a script which checks the machine ID and
links the correct machine libraries.

Keith