1 # SPDX-License-Identifier: GPL-2.0 <<
2 1
3 hostprogs-always-y += genksyms !! 2 host-progs := genksyms
>> 3 always := $(host-progs)
4 4
5 genksyms-objs := genksyms.o parse.tab.o lex. !! 5 genksyms-objs := genksyms.o parse.o lex.o
6 6
7 # FIXME: fix the ambiguous grammar in parse.y !! 7 # -I needed for generated C source (shipped source)
8 # !! 8 HOSTCFLAGS_parse.o := -Wno-uninitialized -I$(src)
9 # Suppress shift/reduce, reduce/reduce conflic <<
10 # unless W=1 is specified. <<
11 # <<
12 # Just in case, run "$(YACC) --version" withou <<
13 # so that 'bison: not found' will be displayed <<
14 ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) <<
15 <<
16 quiet_cmd_bison_no_warn = $(quiet_cmd_bison) <<
17 cmd_bison_no_warn = $(YACC) --version >/ <<
18 $(cmd_bison) 2>/dev/ <<
19 9
20 $(obj)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/ !! 10 # dependencies on generated files need to be listed explicitly
21 $(call if_changed,bison_no_warn) !! 11 $(obj)/lex.o: $(obj)/parse.h $(obj)/keywords.c
22 12
23 endif !! 13 # -I needed for generated C source (shipped source)
>> 14 HOSTCFLAGS_lex.o := -I$(src)
24 15
25 # -I needed for generated C source to include !! 16 ifdef GENERATE_PARSER
26 HOSTCFLAGS_parse.tab.o := -I $(src) <<
27 HOSTCFLAGS_lex.lex.o := -I $(src) <<
28 17
29 # dependencies on generated files need to be l !! 18 # gperf
30 $(obj)/lex.lex.o: $(obj)/parse.tab.h !! 19
>> 20 quiet_cmd_keywords.c = GPERF $@
>> 21 cmd_keywords.c = gperf -L ANSI-C -a -C -E -g -H is_reserved_hash \
>> 22 -k 1,3,$$ -N is_reserved_word -p -t $< > $@
>> 23
>> 24 $(obj)/keywords.c: $(obj)/keywords.gperf FORCE
>> 25 $(call if_changed,keywords.c)
>> 26
>> 27 # flex
>> 28
>> 29 quiet_cmd_lex.c = FLEX $@
>> 30 cmd_lex.c = flex -o$@ -d $(filter-out FORCE,$^)
>> 31
>> 32 $(obj)/lex.c: $(obj)/lex.l $(obj)/parse.h FORCE
>> 33 $(call if_changed,lex.c)
>> 34
>> 35 # bison
>> 36
>> 37 quiet_cmd_parse.c = BISON $@
>> 38 cmd_parse.c = bison -o$@ -dtv $(filter-out FORCE,$^)
>> 39
>> 40 $(obj)/parse.c: $(obj)/parse.y FORCE
>> 41 $(call if_changed,parse.c)
>> 42
>> 43 $(obj)/parse.h: $(obj)/parse.c ;
>> 44
>> 45 clean-files += parse.output
>> 46
>> 47 endif
>> 48
>> 49 targets += keywords.c lex.c parse.c parse.h
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