Re: HelloWorld.c CRASHES when moved from FC6 to FC3!!

[Ignoramus25565]

On Thu, 08 Feb 2007 15:02:00 -0800, Paul Pluzhnikov 
<ppluzhnikov-nsp@charter.net> wrote:
> Robert Heller <heller@deepsoft.com> writes:
>
>> These would be the RHEL 4.x compatibility packages.  They might do what
>> you need though,
>
> I seriously doubt they will -- OP will still be compiling against
> newer libc and kernel headers, and linking against newer libc.so.
>
> If it *does* work for non-trivial programs, please post an update.

Seems to work. I have a problem with linking to libperl.so, but I know
what to do (link against same libperl on the build box). My app runs,
but fails to link to perl when it decides to do so at runtime. 

> Otherwise, the "standard" options are:
> - develop on the lowest release you plan to support (usually the
>   simplest option),
> - install a FC6-x86 -> FC3-x86 cross-compiler
> - use Apptools: http://autopackage.org/apbuild-apgcc.php
>
>> by giving you an even older build chain then is normal
>> for either FC3 or FC6.  Generally, code built with an older build
>> chain, so long as it it not too old, will result in executables that
>> will run on a various newer systems.
>
> But that says nothing about executables running on older systems
> then what they were built on. Build chain itself is likely not the
> problem, it's the libraries and headers that the executable uses.

Agreed.

Also, interestingly, not only the app used to fail witi SIGFPE, but
also "ldd app". 

I hope that I will fix the perl issue tonight.
i