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