Sorry for doupble post, I've forgoten paste compiler output.

cc  -O2 -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
-Wpointer-arith -Wno-main -G 0  -mno-abicalls -m
no-half-pic -I. -I../../../../arch -I../../../.. -nostdinc -I../../../../../gnu/sys -DMIPS1 -DMIPS3 -DLKM -DNKME
MCLUSTERS=1024 -DHZ=256 -DMAXUSERS=64 -D_KERNEL -Dpmax  -c ../../../../arch/pmax/dev/dc.c
cc1: warnings being treated as errors
../../../../arch/pmax/dev/dc.c: In function `dcrint':
../../../../arch/pmax/dev/dc.c:813: warning: implicit declaration of function `mouseInput'
*** Error code 1

Stop.