GNAT for OS/2 and general GNU questions ...

[lotu@wam.umd.edu (Arcadio Alivio Sincero)]

Just got GNAT for OS/2 today ... actually I just got through installing 
OS/2 itself the other day .. so not only am I new to OS/2 programming, I 
am new to OS/2 itself.

Anyhow .. is there a GENERAL FAQ sheet on GNU compilers in general?  I'm 
a little confused as how they work.  They're obviously very different from 
the usual DOS-based compilers I've used.  Are the Ada95, Fortran, and 
soon-to-be Extended Pascal GNU compilers merely TRANSLATORS to C or 
something?  It seems that ALL the GNU compilers I've come across are all 
invoked using the GCC program.  And I thought GCC was a C/C++ compiler.  
Could somebody fill me in or direct me to a FAQ sheet?  

Also, is there a full screen, source level debugger available for GNAT?  
Sort of like how Turbo Debugger is available for Borland Pascal and C?  
I've come across the DOS version of what appears to be a source level 
debugger ... I think it's called GDB or something .. except it's not full 
screen.  More like DOS's DEBUG.COM or Microsoft's SYMDEB ... command-line 
oriented ... yuck ..don't like those kinds at all.  I think there was a 
full-screen debugger available for DOS which debugged C programs at the 
source code level ... it was called LadyBug or something ... is there 
something like that available for OS/2 only for Ada95?

Thanks in advance for any tips you can give me.  I was just fiddiling 
with the GNAT package tonight .. and so far I've been turned off by it 
.. maybe because it's just so different from what I'm used to .. perhaps 
somebody out there can clue me in?  

Arcadio
lotu@wam.umd.edu