PPC XCOFF gas 2.11.2 will not parse gcc2.95.2 .stabx ___CTOR_LIST__

PPC XCOFF gas 2.11.2 will not parse gcc2.95.2 .stabx ___CTOR_LIST__

[Len Lattanzi]

gcc2.95.2 (and the latest version of varasm.c) will generate 
.stabx "___CTOR_LIST__",22,0,0,_GLOBAL_.I._un_link__9streambuf

when configured with -with-gnu-as on AIX and compiling libio/streambuf.cc
But gas 2.11.2 will not parse beyond the second 0 in
gas/config/t-ppc.c:ppc_stabx (this seems to true in the latest sources
as well) 

So how I do get gas to accept this or reconfigure gcc to use gas/gnu
ld without gas choking?

I'm running on AIX5L and collect2 has the nasty habit of pulling in
every g++ object in every archive on the command line.

-Len

Re: PPC XCOFF gas 2.11.2 will not parse gcc2.95.2 .stabx ___CTOR_LIST__

[David Edelsohn]

>>>>> Len Lattanzi writes:

Len> I'm running on AIX5L and collect2 has the nasty habit of pulling in
Len> every g++ object in every archive on the command line.

	gcc-2.95 does not support AIX 5L.  Neither GNU as nor AIX as will
accept that line, but GCC probably is only generating that line because it
is confused by the configuration.

	The AIX assembler and linker are recommended for use with GCC.
Using GNU ld will not change collect2's behavior of pulling in all objects
because it has to assume that symbols may be garbage collected before it
finds constructors and destructors.

	GCC 3.0 in CVS, which eventually will be released as GCC 3.0.4,
should work with AIX 5L, if an AIX assembler patch is installed.

David

Re: PPC XCOFF gas 2.11.2 will not parse gcc2.95.2 .stabx ___CTOR_LIST__

[Len_Lattanzi]

On 2002-01-10 14:33:37 -0500, David Edelsohn wrote:
> 
> 	gcc-2.95 does not support AIX 5L.  Neither GNU as nor AIX as will
> accept that line, but GCC probably is only generating that line because it
> is confused by the configuration.
> 
> 	The AIX assembler and linker are recommended for use with GCC.
> Using GNU ld will not change collect2's behavior of pulling in all objects
> because it has to assume that symbols may be garbage collected before it
> finds constructors and destructors.
> 
> 	GCC 3.0 in CVS, which eventually will be released as GCC 3.0.4,
> should work with AIX 5L, if an AIX assembler patch is installed.
> 
> David

Thanks for the info. I was about to send you email after seeing your entry
in the gcc faq-o-matic.

Can -bnogc be used to avoid this behavior in collect2?

I'll peek at the 3.0 source and see how it marks ctors for gas on AIX.

-Len

Re: PPC XCOFF gas 2.11.2 will not parse gcc2.95.2 .stabx ___CTOR_LIST__

[David Edelsohn]

>>>>> Len Lattanzi writes:

Len> Can -bnogc be used to avoid this behavior in collect2?

	No.  You cannot avoid collecting all objects in the Archive.

David

Re: PPC XCOFF gas 2.11.2 will not parse gcc2.95.2 .stabx ___CTOR_LIST__

[Tom Rix]

David Edelsohn wrote:

>
>         The AIX assembler and linker are recommended for use with GCC.

Gnu's AIX ld and as work with gcc.    Are there some binutils issues I should
know about?

Tom

--
Tom Rix
GCC Engineer
trix@redhat.com

AIX PPC ld/gas problems with gcc

[Len Lattanzi]

On 2002-01-10 23:16:39 -0600, Tom Rix wrote:
> Gnu's AIX ld and as work with gcc.    Are there some binutils issues I should
> know about?
> 
At least four issues with gcc/binutils/AIX

1) Linking with collect2/system linker extracts every g++ object from
   every archive on the link line

2) Linking shared library with gcc force import of __builtin_delete
   from '.' [the main exe] See
   http://gcc.gnu.org/cgi-bin/fom.cgi?file=94

3) Loading g++ shared library into JVM will fail to invoke static
   ctors [On HP I can work around this via ld +init]

4) C++EH house-keeping code is not thread-safe.

I had hoped to workaround #1 and #2 with binutils...