arch checking on depends_build

[Joshua Root]

On 2010-5-30 06:06 , Jeremy Huddleston wrote:
> We can handle packages that have not architecture (xorg protos and other "data" ports), but there doesn't seem to be a way to work around needing an executable (don't care about arch) as a build dependency...  Eg:
> 
> $ sudo port -v install xulrunner-devel +internal_dependencies
> Error: Cannot install xulrunner-devel for the arch(s) 'i386' because
> Error: its dependency autoconf213 is only installed for the arch 'x86_64'
> Error: and does not have a universal variant.
> Error: Unable to execute port: architecture mismatch
> To report a bug, see <http://guide.macports.org/#project.tickets>

autoconf123 needs 'supported_archs noarch' (like autoconf has).

> $ sudo port -v install xorg-server
> Error: Cannot install xorg-server for the arch(s) 'i386 x86_64' because
> Error: its dependency doxygen is only installed for the arch 'x86_64'
> Error: and does not have a universal variant.
> Error: Unable to execute port: architecture mismatch
> To report a bug, see <http://guide.macports.org/#project.tickets>

Here you should use 'depends_skip_archcheck doxygen' in the dependent.

- Josh