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