can't compile

gcc -I../../../include -I../../../backend   -O2 -m486 -pipe -Wall -Wmissing-prototypes -ggdb3 -I../..   -c lock.c -o
lock.o
lock.c: In function `LockResolveConflicts':
lock.c:832: `lockQueue' undeclared (first use this function)
lock.c:832: (Each undeclared identifier is reported only once
lock.c:832: for each function it appears in.)
gmake: *** [lock.o] Error 1

Vadim