New CPU & OS Platform System Properties

[Andrew Haley]

On 01/09/2013 01:17 PM, Florian Weimer wrote:
> On 01/08/2013 09:29 PM, Bob Vandette wrote:
> 
>> Embedded processors support a variety of CPU configurations that are not all binary compatible.  If a developer needs to provide native binaries for one or more of these configurations, they need a way of querying the platform constraints in order to load the appropriate JNI shared library.
> 
> I wonder if it might be better to shift the burden of selecting a 
> working DSO to ld.so: try to dlopen() several DSOs, until you find one 
> that works.
> 
> This would need a precise ABI specification at the ELF level, and ld.so 
> would have to reject loading ABI-incompatible DSOs.

Yes, but we're already into the problem of ARM having insufficient flags
in the DSO to identify compatibility.  It's being fixed now, I believe,
but there are a lot of systems out there.

Andrew.