1# SPDX-License-Identifier: GPL-2.0 2 3hostprogs-y := genksyms 4always := $(hostprogs-y) 5 6genksyms-objs := genksyms.o parse.tab.o lex.lex.o 7 8# FIXME: fix the ambiguous grammar in parse.y and delete this hack 9# 10# Suppress shift/reduce, reduce/reduce conflicts warnings 11# unless W=1 is specified. 12# 13# Just in case, run "$(YACC) --version" without suppressing stderr 14# so that 'bison: not found' will be displayed if it is missing. 15ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) 16 17quiet_cmd_bison_no_warn = $(quet_cmd_bison) 18 cmd_bison_no_warn = $(YACC) --version >/dev/null; \ 19 $(cmd_bison) 2>/dev/null 20 21$(obj)/parse.tab.c: $(src)/parse.y FORCE 22 $(call if_changed,bison_no_warn) 23 24quiet_cmd_bison_h_no_warn = $(quet_cmd_bison_h) 25 cmd_bison_h_no_warn = $(YACC) --version >/dev/null; \ 26 $(cmd_bison_h) 2>/dev/null 27 28$(obj)/parse.tab.h: $(src)/parse.y FORCE 29 $(call if_changed,bison_h_no_warn) 30 31endif 32 33# -I needed for generated C source (shipped source) 34HOSTCFLAGS_parse.tab.o := -I$(src) 35HOSTCFLAGS_lex.lex.o := -I$(src) 36 37# dependencies on generated files need to be listed explicitly 38$(obj)/lex.lex.o: $(obj)/parse.tab.h 39