svn commit: r260022 - head/lib/libkvm

Marcel Moolenaar marcel at xcllnt.net
Sun Dec 29 03:53:05 UTC 2013


On Dec 28, 2013, at 7:32 PM, John-Mark Gurney <jmg at funkthat.com> wrote:

> Marcel Moolenaar wrote this message on Sat, Dec 28, 2013 at 18:49 -0800:
>> 
>> On Dec 28, 2013, at 5:08 PM, John-Mark Gurney <jmg at funkthat.com> wrote:
>> 
>>> Marcel Moolenaar wrote this message on Sat, Dec 28, 2013 at 23:01 +0000:
>>>> Author: marcel
>>>> Date: Sat Dec 28 23:01:57 2013
>>>> New Revision: 260022
>>>> URL: http://svnweb.freebsd.org/changeset/base/260022
>>>> 
>>>> Log:
>>>> Allow building a cross libkvm by setting TARGET_ARCH. The library so
>>>> produced will be called libkvm-${ARCH} instead of libkvm. This allows
>>>> installing it alongside the native version.
>>>> For symbol lookups, use ps_pglobal_lookup() instead of __fdnlist()
>>>> when building a cross libkvm. It is assumed that the cross tool that
>>>> uses the cross libkvm also provides an implementation for this
>>>> proc_services function.
>>>> 
>>>> Note that this commit does not change any of the architecture-specific
>>>> code for cross-compilation.
>>> 
>>> Shouldn't we be putting cross compiled libaries in another location
>>> than /lib?  Kind of like the compat32 libs?
>> 
>> I don't think we're there yet. libkvm is not ready for generic
>> cross building and we don't really have the infrastructure for
>> it either. For one, we really need to install CPU-specific
>> headers on the host.
>> 
>> We can manually cross-build a few things, like binutils and gdb
>> and I see value to extend that to kgdb, but that's about it.
> 
> Then what was the goal of this commit?  Was it to have an i386
> compatible libkvm that links w/ amd64 binaries? or?

The goal was to get a step closer to having useful cross-tools,
including those that need libkvm. In this case it allowed me
to make an ia64 cross-kgdb, useful for core analysis and/or
remote debugging.

-- 
Marcel Moolenaar
marcel at xcllnt.net


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