#
# Kbuild file for Ash
#


static-y := sh

sh-y := init.o
sh-y += arith.o arith_lex.o
sh-y +=	builtins.o cd.o echo.o error.o eval.o exec.o expand.o
sh-y += input.o jobs.o main.o memalloc.o miscbltin.o
sh-y += mystring.o nodes.o options.o parser.o redir.o
sh-y += show.o syntax.o trap.o output.o var.o test.o

cflags-y := -DSHELL

cflags-$(CONFIG_KLIBC_SH_HISTORY) += -DKLIBC_SH_HISTORY
    sh-$(CONFIG_KLIBC_SH_HISTORY) += histedit.o

cflags-$(CONFIG_KLIBC_SH_PRINTF) += -DKLIBC_SH_PRINTF
    sh-$(CONFIG_KLIBC_SH_PRINTF) += printf.o

cflags-$(CONFIG_KLIBC_SH_ALIAS) += -DKLIBC_SH_ALIAS
    sh-$(CONFIG_KLIBC_SH_ALIAS) += alias.o

cflags-$(CONFIG_KLIBC_SH_MAIL) += -DKLIBC_SH_MAIL
    sh-$(CONFIG_KLIBC_SH_MAIL) += mail.o

cflags-y += -DJOBS=$(if $(CONFIG_KLIBC_SH_JOBS),1,0)
    sh-$(CONFIG_KLIBC_SH_JOBS) += kill.o

# locate .h files from generated .c files (make O=)
cflags-y += -I$(srctree)/$(src)
# locate generated .h files from normal .c files
cflags-y += -I$(objtree)/$(obj)

EXTRA_KLIBCCFLAGS := $(cflags-y)

# The shared binary
shared-y    := sh.shared
sh.shared-y := $(sh-y)

# For cleaning
targets := $(static-y) $(shared-y)

# bison produces substantially smaller output than byacc
YACC =  bison -y
LEX  =  lex

# Generate token.h
targets += token.h
$(obj)/parser.o: $(obj)/token.h

quiet_cmd_mktokens = GEN     $@
      cmd_mktokens = sh $< $(obj)
$(obj)/token.h: $(src)/mktokens
	$(call cmd,mktokens)
	
# Generate builtins{.c + .h}
targets += builtins.c builtins.h
quiet_cmd_mkbuiltins = GEN     $@
      cmd_mkbuiltins = sh $< $(srctree)/$(src)/shell.h \
                             $(srctree)/$(src)/builtins.def $(obj) "$(cflags)"
$(obj)/builtins.h $(obj)/builtins.c: $(src)/mkbuiltins $(src)/shell.h \
                                     $(src)/builtins.def
	$(call cmd,mkbuiltins)

# Generate init.c
targets += init.c
quiet_cmd_mkinit = GEN     $@
      cmd_mkinit = sh $< $(obj) $(filter-out $<, $^) && touch $@
      
# list all .c files excluding itself      
all-src := $(addprefix $(src)/, $(filter-out init.c, $(sh-y:.o=.c)))
$(obj)/init.c: $(src)/mkinit.sh $(all-src)
	$(call cmd,mkinit)

# Generate nodes{.c + .h}
targets += nodes.c nodes.h
quiet_cmd_mknodes = GEN     $@
      cmd_mknodes = sh $< $(srctree)/$(src)/nodetypes \
                          $(srctree)/$(src)/nodes.c.pat $(obj)

$(obj)/nodes.c: $(obj)/nodes.h
$(obj)/nodes.h: $(src)/mknodes.sh
	$(call cmd,mknodes)


# Link built in to .c files - yrk
targets += echo.c test.c kill.c printf.c

quiet_cmd_cpbltin = CP      $@
      cmd_cpbltin = cat $< > $@

$(obj)/echo.c: $(src)/bltin/echo.c
	$(call cmd,cpbltin)

$(obj)/test.c: $(src)/bltin/test.c
	$(call cmd,cpbltin)

$(obj)/kill.c: $(src)/bltin/kill.c
	$(call cmd,cpbltin)

$(obj)/printf.c: $(src)/bltin/printf.c
	$(call cmd,cpbltin)

# Generate parser
targets += arith.c arith_lex.c arith.h
$(obj)/arith.c: $(src)/arith.y
	$(YACC) $< -o $@

$(obj)/arith_lex.o:   $(obj)/arith_lex.c   $(obj)/arith.h
$(obj)/arith_yylex.o: $(obj)/arith_yylex.c $(obj)/arith.h

$(obj)/arith_lex.c: $(src)/arith_lex.l
	$(LEX) -o$@ $<

$(obj)/arith.h: $(src)/arith.c
	$(PERL) -ne 'print if ( /^\#\s*define\s+ARITH/ );' < $< > $@


# Targets to install
install-y := sh.shared