Seems like a missing header file??

#   compile  netbsd32/netbsd32_compat_43.o
/opt/tools.sparc64/bin/sparc64--netbsd-gcc -O2 -ffreestanding -Os -pipe -Wall -W
strict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare -Wno-tr
aditional  -Werror -mcpu=ultrasparc  -DSYSVSEM -DSYSVMSG -DSYSVSHM -DCOMPAT_NETB
SD32 -DCOMPAT_10 -DCOMPAT_12 -DCOMPAT_13 -DCOMPAT_43 -DEXEC_AOUT -DEXEC_ELF32 -n
ostdinc -nostdinc -I. -I/opt/src/sys/lkm/compat/netbsd32 -isystem /opt/src/sys -
isystem /opt/src/sys/arch -D_KERNEL -D_LKM  -c    /opt/src/sys/compat/netbsd32/n
etbsd32_compat_43.c
/opt/src/sys/compat/netbsd32/netbsd32_compat_43.c: In function `compat_43_netbsd
32_orecvmsg':
/opt/src/sys/compat/netbsd32/netbsd32_compat_43.c:527: error: storage size of `o
mh' isn't known
/opt/src/sys/compat/netbsd32/netbsd32_compat_43.c:527: warning: unused variable 
`omh'
/opt/src/sys/compat/netbsd32/netbsd32_compat_43.c: In function `compat_43_netbsd
32_osendmsg':
/opt/src/sys/compat/netbsd32/netbsd32_compat_43.c:625: error: storage size of `o
mh' isn't known
/opt/src/sys/compat/netbsd32/netbsd32_compat_43.c:625: warning: unused variable 
`omh'
*** [netbsd32_compat_43.o] Error code 1
1 error

nbmake: stopped in /opt/src/sys/lkm/compat/netbsd32
*** [dependall] Error code 2
1 error