K 10
svn:author
V 6
mhorne
K 8
svn:date
V 27
2020-09-08T13:24:44.546540Z
K 7
svn:log
V 381
RISC-V: enable MK_FORMAT_EXTENSIONS

This option was marked as broken because our riscv64-xtoolchain-gcc
package lacked support. Since we are moving away from xtoolchain gcc in
favor of freebsd-gcc9, there should be no issue in enabling this option
by default.

Notably, this enables -Wformat errors.

Reviewed by:	kp, jhb
Differential Revision:	https://reviews.freebsd.org/D26320

END