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Subject: Re: [hwloc-devel] 1.3.2rc1 failures w/ icc on x86 (visibility?)
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2012-02-10 14:04:46

What does nm say about Are those symbols public or private? Was everything properly built as 32 bit?

It's kinda weird that icc supported the visibility stuff but gcc did not...

On Feb 10, 2012, at 12:27 PM, Paul H. Hargrove wrote:

> I have versions 8.1.032, 9.0.024 and 9.1.042 of the Intel compilers on a Linux/x86 (32-bit) host.
> All three can configure and build hwloc-1.3.2rc1, but all are failing "make check" in the same way.
> What I see is ton(ne)s of linker messages and every executable SEGVs.
> The linker messages look like:
>> CC hwloc_synthetic.o
>> CCLD hwloc_synthetic
>> ld: hwloc_synthetic.o(.text+0x1c): unresolvable relocation against symbol `hwloc_topology_init'
>> ld: hwloc_synthetic.o(.text+0x2a): unresolvable relocation against symbol `hwloc_topology_set_synthetic'
>> ld: hwloc_synthetic.o(.text+0x33): unresolvable relocation against symbol `hwloc_topology_load'
>> ld: hwloc_synthetic.o(.text+0x3c): unresolvable relocation against symbol `hwloc_topology_check'
>> ld: hwloc_synthetic.o(.text+0x46): unresolvable relocation against symbol `hwloc_topology_get_depth'
>> ld: hwloc_synthetic.o(.text+0x64): unresolvable relocation against symbol `hwloc_get_nbobjs_by_depth'
>> ld: hwloc_synthetic.o(.text+0x8a): unresolvable relocation against symbol `hwloc_get_obj_by_depth'
>> ld: hwloc_synthetic.o(.text+0xc6): unresolvable relocation against symbol `hwloc_topology_destroy'
> Where most tests have far more of these.
> For the moment, I am going to assume the SEGVs are a result of the linker problems.
> As compared to gcc on the same system, the only difference in include/private/autogen/config.h is:
>> /* Whether C compiler supports symbol visibility or not */
> Where the '1' is the build with the Intel compiler.
> So, my current suspicion falls on the visibility crud.
> I can confirm that "HWLOC_CFLAGS = -fvisibility=hidden" in Makefile.
> Other then that, I don't know where to begin looking at this problem.
> -Paul
> --
> Paul H. Hargrove PHHargrove_at_[hidden]
> Future Technologies Group
> HPC Research Department Tel: +1-510-495-2352
> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
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> hwloc-devel mailing list
> hwloc-devel_at_[hidden]

Jeff Squyres
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