scripts/genksyms/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2
   3 hostprogs-always-y      += genksyms
   4
   5 genksyms-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 "$(YACC) --version" without suppressing stderr
  13 # so that 'bison: not found' will be displayed if it is missing.
  14 ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
  15
  16 quiet_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
  23 endif
  24
  25 # -I needed for generated C source (shipped source)
  26 HOSTCFLAGS_parse.tab.o := -I $(srctree)/$(src)
  27 HOSTCFLAGS_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