1# SPDX-License-Identifier: GPL-2.0 2 3hostprogs := genksyms 4always-y := $(hostprogs) 5 6genksyms-objs := genksyms.o parse.tab.o lex.lex.o 7 8# FIXME: fix the ambiguous grammar in parse.y and delete this hack 9# 10# Suppress shift/reduce, reduce/reduce conflicts warnings 11# unless W=1 is specified. 12# 13# Just in case, run "$(YACC) --version" without suppressing stderr 14# so that 'bison: not found' will be displayed if it is missing. 15ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) 16 17quiet_cmd_bison_no_warn = $(quiet_cmd_bison) 18 cmd_bison_no_warn = $(YACC) --version >/dev/null; \ 19 $(cmd_bison) 2>/dev/null 20 21$(obj)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/pars%.y FORCE 22 $(call if_changed,bison_no_warn) 23 24endif 25 26# -I needed for generated C source (shipped source) 27HOSTCFLAGS_parse.tab.o := -I $(srctree)/$(src) 28HOSTCFLAGS_lex.lex.o := -I $(srctree)/$(src) 29 30# dependencies on generated files need to be listed explicitly 31$(obj)/lex.lex.o: $(obj)/parse.tab.h 32