GCC Questions

[Mark Mitchell]

--On Friday, October 26, 2001 02:05:55 PM -0600 Dave Nystrom <wdn at lanl.gov> 
wrote:

> I am revisiting my earlier efforts to try to use gcc to compile our source
> code base and have several questions.
>
> 1.  I am currently using gcc-3.0.  Should I upgrade to a more recent
>     snapshot?  If so, which one?

The new 3.0.2 release may compile faster.  But, I have not tested
POOMA with it.

> 2.  How do I turn on/off exceptions with gcc?

-fno-exceptions

> 3.  What options do I use in order to try to force as strict as possible
>     compliance of my code with the C++ Standard?

-ansi

> 4.  Are there particular options which you would recommend for either my
>     debug or optimized builds for our Pooma 2 based code?

-g for debug, -O2 for optimization

> 5.  Are there any provisions or analogs to the library closure features
> that     are used with EDG based compilers?

No.

> 6.  What loader does gcc use when building on SGI Irix 6.5 systems?  If
> it is     the SGI loader, is it possible to use the GNU loader on SGI
> Irix 6.5     systems?  There appears to be a problem with the SGI loader
> which     prevents it from using libraries that are larger than about 512
> MBytes.     Some of our debug libraries are larger than this limiting
> size.

Under contract from LANL, we mostly completed a port of the GNU loader
to IRIX.   However, that port was never finished (we were asked to work
on other projects).  So, GCC uses the SGI loader.

--
Mark Mitchell                   mark at codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com