NASM is more actively maintained and permits generating dependency information
as a sideeffect of assembling, thus cutting build times in half.
(Cherry-picked from libav commit 57b753b445e23363c997a8ec1c556e0b0f6e9da3)
Signed-off-by: James Almer <jamrial@gmail.com>
bc hasn't been needed since a982c5d74fbc7ff5bd2f2f73af61ae48e9b1bcc6
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>