emulators/virtualbox-ose-additions-nox11 fails to build in poudriere-devel for amd64 context: fails CTASSERT(sizeof(struct pcpu) == UMA_PCPU_ALLOC_SIZE)

The failure:

kBuild: Compiling VBoxGuestR0Lib - /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibPhysHeap.cpp
In file included from /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/src/VBox/GuestHost/HGSMI/HGSMIMemAlloc.cpp:55:
In file included from /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/include/VBox/Graphics/HGSMIMemAlloc.h:31:
In file included from /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/include/VBox/Graphics/HGSMIDefs.h:35:
In file included from /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/include/VBox/Graphics/VBoxVideoIPRT.h:32:
In file included from /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/include/iprt/string.h:45:
In file included from /usr/src/sys/sys/libkern.h:41:
In file included from /usr/src/sys/sys/systm.h:112:
/usr/src/sys/sys/pcpu.h:207:1: error: static_assert failed "compile-time assertion failed"
CTASSERT(sizeof(struct pcpu) == UMA_PCPU_ALLOC_SIZE);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/src/sys/sys/systm.h:107:21: note: expanded from macro 'CTASSERT'
#define CTASSERT(x)     _Static_assert(x, "compile-time assertion failed")
                        ^              ~

(There are other example places that fail the same assert condition.)

There is also a warning for PAGE_SIZE being redefined:

In file included from /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR0LibInit.cpp:33:
In file included from /wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/include/iprt/string.h:45:
In file included from /usr/src/sys/sys/libkern.h:41:
In file included from /usr/src/sys/sys/systm.h:111:
In file included from /usr/src/sys/sys/param.h:141:
/usr/include/machine/param.h:101:9: warning: 'PAGE_SIZE' macro redefined [-Wmacro-redefined]
#define PAGE_SIZE       (1<<PAGE_SHIFT) /* bytes/page */
        ^
/wrkdirs/usr/ports/emulators/virtualbox-ose-additions-nox11/work/VirtualBox-5.2.14/include/iprt/param.h:52:10: note: previous definition is here
# define PAGE_SIZE          4096
         ^


Context:


# uname -apKU
FreeBSD FBSDUSSD 12.0-CURRENT FreeBSD 12.0-CURRENT  r336301M  amd64 amd64 1200072 1200072



# svnlite info /usr/ports | grep "Re[plv]"
Relative URL: ^/head
Repository Root: svn://svn.freebsd.org/ports
Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
Revision: 474654
Last Changed Rev: 474654



The "M" in r336301M is mostly for use with powerpc* family experiments based
on modern C/C++ compilers:

# svnlite status /usr/src/ | sort
?       /usr/src/sys/amd64/conf/GENERIC-DBG
?       /usr/src/sys/amd64/conf/GENERIC-NODBG
?       /usr/src/sys/arm/conf/GENERIC-DBG
?       /usr/src/sys/arm/conf/GENERIC-NODBG
?       /usr/src/sys/arm64/conf/GENERIC-DBG
?       /usr/src/sys/arm64/conf/GENERIC-NODBG
?       /usr/src/sys/powerpc/conf/GENERIC64vtsc-DBG
?       /usr/src/sys/powerpc/conf/GENERIC64vtsc-NODBG
?       /usr/src/sys/powerpc/conf/GENERICvtsc-DBG
?       /usr/src/sys/powerpc/conf/GENERICvtsc-NODBG
M       /usr/src/Makefile.libcompat
M       /usr/src/contrib/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp
M       /usr/src/contrib/llvm/tools/lld/ELF/Arch/PPC64.cpp
M       /usr/src/crypto/openssl/crypto/armcap.c
M       /usr/src/lib/libkvm/kvm_powerpc.c
M       /usr/src/lib/libkvm/kvm_private.c
M       /usr/src/release/Makefile.vm
M       /usr/src/release/scripts/mk-vmimage.sh
M       /usr/src/release/tools/vmimage.subr
M       /usr/src/secure/lib/libcrypto/Makefile
M       /usr/src/stand/defs.mk
M       /usr/src/stand/powerpc/boot1.chrp/Makefile
M       /usr/src/stand/powerpc/kboot/Makefile
M       /usr/src/sys/arm64/arm64/identcpu.c
M       /usr/src/sys/conf/kmod.mk
M       /usr/src/sys/conf/ldscript.powerpc
M       /usr/src/sys/powerpc/aim/mmu_oea64.c
M       /usr/src/sys/powerpc/ofw/ofw_machdep.c

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)