[oe] [PATCH] base.bbclass: introduce COMPATIBLE_TARGET_SYS

[Phil Blundell]

On Sat, 2010-07-10 at 18:19 +0200, Frans Meulenbroeks wrote:
> This patch introduces COMPATIBLE_TARGET_SYS
> It is similar to COMPATIBLE_MACHINE but where COMPATIBLE_MACHINE
> is used to specify that a certain recipe is for a certain machine
> COMPATIBLE_TARGET_SYS can be used to specify that a certain recipe
> is for a certain architecture.
> 
> Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks at gmail.com>

Per our IRC discussion, I am still not totally comfortable with
introducing this extra overhead to all users of base.bbclass.  In the
vast majority of cases (i.e. essentially all packages apart from
toolchain ones), TARGET_SYS == HOST_SYS and hence checking both of them
is just a waste of time.  But I do take your point about wanting to mop
up both cross and regular gcc.

I think I would prefer to see the TARGET_SYS check placed in some common
place which can be included by all toolchain recipes (and, possibly, a
general ongoing effort to reduce the number of non-cross recipes which
refer explicitly to TARGET_xx when HOST_xx would do).  But I don't have
a very strong view on the matter and, if there is a general consensus in
favour of putting this in base.bbclass, I will go along with that.

p.