Problems building 11-stable/i386 with readonly /usr/src

[Peter Jeremy]

Sometime between r329122 and r329157, my 11-stable i386 box stopped
being able to buildworld with a readonly /usr/src. I've been updating
regularly but the problem still remains at r329450.  I don't have any
problems building the same tree on amd64 or building head on i386 or
amd64.  Does anyone have any ideas?

Starting from an empty /usr/obj, the failure is:
...
>>> stage 4.3: building everything
...
===> stand/zfs (all)
Building /usr/obj/usr/src/stand/zfs/machine
machine -> /usr/src/sys/i386/include
Building /usr/obj/usr/src/stand/zfs/x86
x86 -> /usr/src/sys/x86/include
Building /usr/obj/usr/src/stand/zfs/zfs.o
Building /usr/obj/usr/src/stand/zfs/skein.o
Building /usr/obj/usr/src/stand/zfs/skein_block.o
Building /usr/obj/usr/src/stand/zfs/libzfsboot.a
building static zfsboot library
===> stand/efi (all)
machine -> /usr/src/sys/i386/include
ln: machine: Read-only file system
*** Error code 1

Stop.
make[4]: stopped in /usr/src/stand/efi
.ERROR_TARGET='machine'
.ERROR_META_FILE=''
.MAKE.LEVEL='4'
MAKEFILE=''
.MAKE.MODE='meta missing-filemon=yes missing-meta=yes silent=yes verbose'
_ERROR_CMD='.PHONY'
.CURDIR='/usr/src/stand/efi'
.MAKE='make'
.OBJDIR='/usr/src/stand/efi'
.TARGETS='all'
DESTDIR='/usr/obj/usr/src/tmp'
LD_LIBRARY_PATH=''
MACHINE='i386'
MACHINE_ARCH='i386'
MAKEOBJDIRPREFIX='/usr/obj'
MAKESYSPATH='/usr/src/share/mk'
MAKE_VERSION='20170720'
PATH='/usr/obj/usr/src/tmp/legacy/usr/sbin:/usr/obj/usr/src/tmp/legacy/usr/bin:/usr/obj/usr/src/tmp/legacy/bin:/usr/obj/usr/src/tmp/usr/sbin:/usr/obj/usr/src/tmp/usr/bin:/sbin:/bin:/usr/sbin:/usr/bin'
SRCTOP='/usr/src'
OBJTOP='/usr/src'
.MAKE.MAKEFILES='/usr/src/share/mk/sys.mk /usr/src/share/mk/local.sys.env.mk /usr/src/share/mk/src.sys.env.mk /etc/src-env.conf /usr/src/share/mk/bsd.mkopt.mk /etc/make.conf /usr/src/share/mk/local.sys.mk /usr/src/share/mk/src.sys.mk Makefile /usr/src/share/mk/bsd.init.mk /usr/src/share/mk/bsd.opts.mk /usr/src/share/mk/bsd.cpu.mk /usr/src/share/mk/local.init.mk /usr/src/share/mk/src.init.mk /usr/src/stand/efi/../Makefile.inc /usr/src/stand/efi/../defs.mk /usr/src/share/mk/src.opts.mk /usr/src/share/mk/bsd.own.mk /usr/src/share/mk/bsd.compiler.mk /usr/src/share/mk/bsd.compiler.mk /usr/src/share/mk/bsd.subdir.mk'
.PATH='. /usr/src/stand/efi'
*** Error code 1

-- 
Peter Jeremy
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 963 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20180218/35fedf42/attachment.sig>