sys/modules/Makefile and MACHINE_ARCH vs arm64 (in use) vs aarch64 (not in use) VS. man arch; also COMPAT_FREEBSD32_ENABLED use

[Mark Millard]

man arch reports:

           MACHINE       MACHINE_CPUARCH       MACHINE_ARCH
           arm64         aarch64               aarch64
. . .
           arm           arm                   armv6, armv7

So I'd not expect arm64 in MACHINE_ARCH . But
sys/modules/Makefile has (from a grep for MACHINE_ARCH):

.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "arm64"
.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "arm64" || 
${MACHINE_ARCH:Mpowerpc64*}


Another issue may be that COMPAT_FREEBSD32_ENABLED is only
put to use in the Makefile for MACHINE_CPUARCH being i386
or amd64 :

.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
_agp=           agp
.if ${MACHINE_CPUARCH} == "i386" || !empty(COMPAT_FREEBSD32_ENABLED)
. . .




===
Mark Millard
marklmi at yahoo.com