libvpx and gcc 4.4 dependency

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

NetBSD 5 comes with gcc 4.1.3.
libvpx needs >= gcc 4.4 to build ssse3 code
libvpx then ends up with a runtime dependency on gcc 4.4 via libgcc_s,
according to libvpx's +BUILD_INFO:

REQUIRES=/usr/pkg/gcc44/lib/libgcc_s.so.1

This means that the 1.6M libvpx (i386) binary package carries
a 150M dependency, which seems a little heavy...

Thoughts?

(Make ssse3 optional?) (Would that imply sse4_1 as well?)

Cheers,

Patrick