Fixed `make -jN' for large N. Just put all generated headers in SRCS.

usr.bin/f2c/Makefile

@@ -9,7 +9,7 @@ SRCSd =	main.c init.c gram.c lex.c proc.c equiv.c data.c format.c \
 	expr.c exec.c intr.c io.c misc.c error.c mem.c names.c \
 	output.c p1output.c pread.c put.c putpcc.c vax.c formatdata.c \
 	parse_args.c niceprintf.c cds.c sysdep.c version.c
-SRCS =	$(SRCSd) # malloc.c
+SRCS =	$(SRCSd) tokdefs.h # malloc.c
 
 GRAMFILES = ${.CURDIR}/gram.head ${.CURDIR}/gram.dcl ${.CURDIR}/gram.expr\
 	${.CURDIR}/gram.exec ${.CURDIR}/gram.io