GDB on Solaris 10

GDB on Solaris 10

[Gareth Williams]

Does anyone have GDB working on Solaris 10?
 
I have installed GDB 6.6 from http://www.sunfreeware.com. This works for
'hello world' but not for the multi-threaded application I need to
debug. The problem is essentially that described in problem report 2481:

http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&databas
e=gdb&pr=2481 

We also have compiled GDB 6.8 from source - and this does not work even
for 'hello world'.

bash-3.00$ gdb ./hello

GNU gdb 6.8
...
This GDB was configured as "sparc-sun-solaris2.10"...
(gdb) break main
Breakpoint 1 at 0x10c60: file hello.cc, line 6.
(gdb) r
Starting program: /home/williamsg/hello 
procfs: init_inferior, get_traced_signals line 4891, /proc/18409: Error
0.
(gdb) where
procfs: fetch_registers, get_gregs line 3768, /proc/18409: Error 0.
procfs: fetch_registers, get_gregs line 3768, /proc/18409: Error 0.
(gdb)

So: does anyone have any version of GDB working on Solaris 10, for
threaded applications?

If so a hint would be nice :-) If not, is anyone interested in getting
it working? I may be able to spend a few days on this. Some pointers in
the right direction would really help.

cheers

Gareth Williams

Re: GDB on Solaris 10

[Joel Brobecker]

> Does anyone have GDB working on Solaris 10?

Yes - we build GDB 6.8 on Solaris 10 for both 32 and 64 bits.
We don't do anything particular to get it working, though, so
I'm not sure what the problem might be in your case.

-- 
Joel

RE: GDB on Solaris 10

[Gareth Williams]

Thanks, Joel, on the strength of that I tried it again.

I got GDB 6.8 working for 32-bits just by fixing the warning mentioned
in problem report 2481. The issue described there, I now think is due to
trying to debug a 64-bit application with a 32-bit GDB. (That is what I
was doing and I saw the same errors). This is explained here:
http://sourceware.org/ml/gdb/2001-01/msg00195.html

Building GDB for 64-bit was the problem. By googling I found out to try

> CC="gcc -m64" ./configure

Is that the recommended method? I can't find this in the GDB
documentation.
There are various sparc64 targets in the Makefiles, so I tried things
like

> ./configure --target=sparc64-sun-solaris2.10

But this just seems to give it a different label. (Or do I need both?)
Is there a list of valid targets anywhere?

There must be something clever going on behind the scenes because the
link lines for 32-bit and 64-bit (when using CC="gcc -m64") are quite
different.

With 64-bit I got complaints about undefined symbols wattr_on and
wattr_off in the curses library, which is not a problem for the default
32-bit compile.

Some more googling led me to:

> CC="gcc -m64" ./configure --disable-tui
> make

And I have a 64-bit GDB that kind of works! So thanks again for the
help.

For future reference I would be interested to know if this is the right
way to compile 64-bit on Solaris, and (unless I have missed it) perhaps
it needs to be documented somewhere?

cheers

Gareth Williams



-----Original Message-----
From: Joel Brobecker [mailto:brobecker@adacore.com] 
Sent: 05 August 2008 20:08
To: Gareth Williams
Cc: gdb@sourceware.org
Subject: Re: GDB on Solaris 10

> Does anyone have GDB working on Solaris 10?

Yes - we build GDB 6.8 on Solaris 10 for both 32 and 64 bits.
We don't do anything particular to get it working, though, so
I'm not sure what the problem might be in your case.

-- 
Joel


> Does anyone have GDB working on Solaris 10?
> 
> I have installed GDB 6.6 from http://www.sunfreeware.com. This works
for > > 'hello world' but not for the multi-threaded application I need
to debug. > The problem is essentially that described in problem report
2481:
>
> http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit->
trail&database=gdb&pr=2481 
>
> We also have compiled GDB 6.8 from source - and this does not work
even for 'hello world'.
>
> bash-3.00$ gdb ./hello
>
> GNU gdb 6.8
> ...
> This GDB was configured as "sparc-sun-solaris2.10"...
> (gdb) break main
> Breakpoint 1 at 0x10c60: file hello.cc, line 6.
> (gdb) r
> Starting program: /home/williamsg/hello
> procfs: init_inferior, get_traced_signals line 4891, /proc/18409:
Error 0.
> (gdb) where
> procfs: fetch_registers, get_gregs line 3768, /proc/18409: Error 0.
> procfs: fetch_registers, get_gregs line 3768, /proc/18409: Error 0.
> (gdb)
>
> So: does anyone have any version of GDB working on Solaris 10, for
threaded applications?
>
> If so a hint would be nice :-) If not, is anyone interested in getting
it > working? I may be able to spend a few days on this. Some pointers
in the right direction would really help.
>
> cheers
>
> Gareth Williams

Re: GDB on Solaris 10

[Joel Brobecker]

> > CC="gcc -m64" ./configure --disable-tui
> > make
> 
> And I have a 64-bit GDB that kind of works! So thanks again for the
> help.
> 
> For future reference I would be interested to know if this is the right
> way to compile 64-bit on Solaris, and (unless I have missed it) perhaps
> it needs to be documented somewhere?

Yes, that's the correct way as far as I know to build GDB on sparc64.
At AdaCore, we use a compiler that is 64bit by default, so we don't
need to specify CC="gcc -m64", but otherwise we do the same.

-- 
Joel