src/libexec/Makefile.amd64, branch release/13.1.0 FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=release%2F13.1.0 2014-10-16T00:33:06Z HYPERV isn't available on all architectures, but just on by default 2014-10-16T00:33:06Z Warner Losh imp@FreeBSD.org 2014-10-16T00:33:06Z urn:sha1:f8080a9986c63fbc48df591d6b8d678103d7b0bf for i386/amd64. Rather, it only works on i386/amd64 and should only be built there. Rather than change the default based on which architecutre, do things more directly by only building it on i386/amd64 and having it always on. This is how we handle other options that are relevant only for a few architectures.