cc -c -O -DFLEXNAMES -I/usr/src/lib/mip.vax -I. /usr/src/lib/mip.vax/trees.c
"/usr/src/lib/mip.vax/trees.c", line 1157: optycheck undefined
"/usr/src/lib/mip.vax/trees.c", line 1157: syntax error
"/usr/src/lib/mip.vax/trees.c", line 1162: syntax error
"/usr/src/lib/mip.vax/trees.c", line 1162: warning: old-fashioned initialization: use =
"/usr/src/lib/mip.vax/trees.c", line 1162: warning: undeclared initializer name t2
"/usr/src/lib/mip.vax/trees.c", line 1162: warning: undeclared initializer name p
"/usr/src/lib/mip.vax/trees.c", line 1162: warning: struct/union or struct/union pointer required
"/usr/src/lib/mip.vax/trees.c", line 1162: warning: struct/union or struct/union pointer required
"/usr/src/lib/mip.vax/trees.c", line 1162: syntax error
"/usr/src/lib/mip.vax/trees.c", line 1162: warning: old-fashioned initialization: use =
"/usr/src/lib/mip.vax/trees.c", line 1163: warning: struct/union or struct/union pointer required
"/usr/src/lib/mip.vax/trees.c", line 1164: syntax error
"/usr/src/lib/mip.vax/trees.c", line 1167: syntax error
"/usr/src/lib/mip.vax/trees.c", line 1167: warning: old-fashioned initialization: use =
"/usr/src/lib/mip.vax/trees.c", line 1167: unacceptable operand of &
"/usr/src/lib/mip.vax/trees.c", line 1167: cannot recover from earlier errors: goodbye!
*** Error code 1

Stop.
