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 $(srctree)/$(src)
27HOSTCFLAGS_lex.lex.o := -I $(srctree)/$(src)
28
29# dependencies on generated files need to be listed explicitly
30$(obj)/lex.lex.o: $(obj)/parse.tab.h
31