Better way to do conditional inclusion in make

[Simon J. Gerraty]

Warner Losh <imp at bsdimp.com> wrote:
> [*] Consider having something like
> .if ${MACHINE} != “i386” && ${MACHINE} != “amd64”

FWIW I started encouraging folk here to use the construct:

.if ${MACHINE:Ni386:Namd64} == "" # either
.if ${MACHINE:Ni386:Namd64} != "" # neither

as it more easily extends to a long list while remaining readable