Re: Can I do 64-bit gcc compilation on 64-bit RedHat platform ?

"Bob Techentin" <techentin.robert@mayo.edu> wrote in
news:dcd9n2$no4$1@tribune.mayo.edu:

> "Shaun Deacon" <sdeacon@fma.fujitsu.com> wrote
>> ...can I actually do 64-bit compilation of Tcl/Tk
>> with gcc (tcl/tk 8.3.5) ?
>>
>> The reason I ask is that the configure script
>> returns the following warning :
>>
>> "64bit support being disabled -- don't know magic
>> for this platform"
>>
>> Looking inside the config script, I don't see
>> where "-m64" is ever enabled for gcc ?
>>
>> My system details are:
>>
>> %> uname -a
>> Linux
>> dl145-02
>> 2.4.21-23.ELsmp
>> x86_64
>> x86_64
>> GNU/Linux
>>
>
>
> The --enable-64bit support is checked in the macros in tcl.m4. I only
> see 64bit support checks for AIX, HPUX, IRIX, and SunOS-5. Linux on
> 64 bit AMD or Intel processors is a relatively new thing, and it isn't
> supported in Tcl, yet.
>
> So the answer is "No, you can't compile 64 bit Tcl on Red Hat
> Enterprise Linux." I seriously doubt that your commercial application
> was compiled on Red Hat Linux with 64bit Tcl. You should be just fine
> with a regular, 32 bit build.
>
> Bob

I had no trouble building 64 bit versions of 8.5a3 with Suse9.3 on an
athlon 64. What I have not succeeded in doing yet is building a 32 bit
version on that system. Seems hard to get the -m32 in all the right
places with the distributed configure script.

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