[testsuite] don't use lto plugin if it doesn't work

[Alexandre Oliva]

On Jun 27, 2012, Mike Stump <mikestump@comcast.net> wrote:

> On Jun 27, 2012, at 2:07 AM, Alexandre Oliva wrote:
>> Why?  We don't demand a working plugin.  Indeed, we disable the use of
>> the plugin if we find a linker that doesn't support it.  We just don't
>> account for the possibility of finding a linker that supports plugins,
>> but that doesn't support the one we'll build later.

> If this is the preferred solution, then having configure check the
> 64-bitness of ld and turning off the plugin altogether on mismatches
> sounds like a reasonable course of action to me.

I'd very be surprised if I asked for an i686 native build to package and
install elsewhere, and didn't get a plugin just because the build-time
linker wouldn't have been able to run the plugin.

-- 
Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/   FSF Latin America board member
Free Software Evangelist      Red Hat Brazil Compiler Engineer