linux/scripts/genksyms/Makefile
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   1
   2hostprogs-y     := genksyms
   3always          := $(hostprogs-y)
   4
   5genksyms-objs   := genksyms.o parse.o lex.o
   6
   7# -I needed for generated C source (shipped source)
   8HOSTCFLAGS_parse.o := -Wno-uninitialized -I$(src)
   9
  10# dependencies on generated files need to be listed explicitly
  11$(obj)/lex.o: $(obj)/parse.h $(obj)/keywords.c
  12
  13# -I needed for generated C source (shipped source)
  14HOSTCFLAGS_lex.o := -I$(src)
  15
  16ifdef GENERATE_PARSER
  17
  18# gperf
  19
  20quiet_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        cp $@ $@_shipped
  27
  28# flex
  29
  30quiet_cmd_lex.c = FLEX    $@
  31      cmd_lex.c = flex -o$@ -d $<
  32
  33$(obj)/lex.c: $(obj)/lex.l $(obj)/keywords.c FORCE
  34        $(call if_changed,lex.c)
  35        cp $@ $@_shipped
  36
  37# bison
  38
  39quiet_cmd_parse.c = BISON   $@
  40      cmd_parse.c = bison -o$@ -dtv $(filter-out FORCE,$^)
  41
  42$(obj)/parse.c: $(obj)/parse.y FORCE
  43        $(call if_changed,parse.c)
  44        cp $@ $@_shipped
  45        cp $(@:.c=.h) $(@:.c=.h)_shipped
  46
  47$(obj)/parse.h: $(obj)/parse.c ;
  48
  49clean-files     += parse.output
  50
  51endif
  52
  53targets += keywords.c lex.c parse.c parse.h
  54