# ===========================================================================

 # crosstool-NG configuration targets

 # These targets are used from top-level makefile

 # Derive the project version from, well, the project version:

 export PROJECTVERSION=$(CT_VERSION)

 # The place where the kconfig stuff lies

 obj = kconfig

 #-----------------------------------------------------------

 # The configurators rules

 configurators = menuconfig oldconfig

 PHONY += $(configurators)

 $(configurators): config_files

 menuconfig: $(obj)/mconf

 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

 	$(SILENT)$< $(KCONFIG_TOP)

 oldconfig: $(obj)/conf .config

 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

 	$(SILENT)$< -s $(KCONFIG_TOP)

 # Always be silent, the stdout an be >.config

 extractconfig:

 	@awk 'BEGIN { dump=0; }                                                 \

 	      dump==1 && $$0~/^\[.....\][[:space:]]+(# |)CT_/ {                 \

 	          $$1="";                                                       \

 	          gsub("^[[:space:]]","");                                      \

 	          print;                                                        \

 	      }                                                                 \

 	      $$0~/Dumping user-supplied crosstool-NG configuration: done in/ { \

 	          dump=0;                                                       \

 	      }                                                                 \

 	      $$0~/Dumping user-supplied crosstool-NG configuration$$/ {        \

 	          dump=1;                                                       \

 	      }'

 #-----------------------------------------------------------

 # Help text used by make help

 help-config::

 	@echo  '  menuconfig         - Update current config using a menu based program'

 	@echo  '  oldconfig          - Update current config using a provided .config as base'

 	@echo  '  extractconfig      - Extract to stdout the configuration items from a'

 	@echo  '                       build.log file piped to stdin'

 #-----------------------------------------------------------

 # Hmmm! Cheesy build!

 # Or: where I can unveil my make-fu... :-]

 # Oh! Files not here are there, in fact! :-)

 vpath %.c $(CT_LIB_DIR)

 vpath %.h $(CT_LIB_DIR)

 # What is the compiler?

 HOST_CC ?= gcc -funsigned-char

 HOST_LD ?= gcc

 # Helpers

 check_gettext = $(CT_LIB_DIR)/kconfig/check-gettext.sh

 check_lxdialog = $(CT_LIB_DIR)/kconfig/lxdialog/check-lxdialog.sh

 # Build flags

 CFLAGS =

 LDFLAGS =

 # Compiler flags to use gettext

 INTL_CFLAGS = $(shell $(SHELL) $(check_gettext) $(HOST_CC) $(EXTRA_CFLAGS))

 # Compiler and linker flags to use ncurses

 NCURSES_CFLAGS = $(shell $(SHELL) $(check_lxdialog) -ccflags)

 NCURSES_LDFLAGS = $(shell $(SHELL) $(check_lxdialog) -ldflags $(HOST_CC))

 # Check that we have the required ncurses stuff installed for lxdialog (menuconfig)

 dochecklxdialog:

 	$(SILENT)$(SHELL) $(check_lxdialog) -check $(HOST_CC) $(NCURSES_CFLAGS) $(NCURSES_LDFLAGS)

 # Common source files

 COMMON_SRC = kconfig/zconf.tab.c

 COMMON_OBJ = $(patsubst %.c,%.o,$(COMMON_SRC))

 COMMON_DEP = $(patsubst %.o,%.dep,$(COMMON_OBJ))

 $(COMMON_OBJ) $(COMMON_DEP): CFLAGS += $(INTL_CFLAGS)

 # lxdialog source files

 LX_SRC = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/kconfig/lxdialog/*.c))

 LX_OBJ = $(patsubst %.c,%.o,$(LX_SRC))

 LX_DEP = $(patsubst %.o,%.dep,$(LX_OBJ))

 $(LX_OBJ) $(LX_DEP): CFLAGS += $(NCURSES_CFLAGS) $(INTL_CFLAGS)

 # What's needed to build 'conf'

 conf_SRC = kconfig/conf.c

 conf_OBJ = $(patsubst %.c,%.o,$(conf_SRC))

 conf_DEP = $(patsubst %.o,%.dep,$(conf_OBJ))

 $(conf_OBJ) $(conf_DEP): CFLAGS += $(INTL_CFLAGS)

 # What's needed to build 'mconf'

 mconf_SRC = kconfig/mconf.c

 mconf_OBJ = $(patsubst %.c,%.o,$(mconf_SRC))

 mconf_DEP = $(patsubst %.c,%.dep,$(mconf_SRC))

 $(mconf_OBJ) $(mconf_DEP): CFLAGS += $(NCURSES_CFLAGS) $(INTL_CFLAGS)

 $(obj)/mconf: LDFLAGS += $(NCURSES_LDFLAGS)

 ifeq ($(shell uname -o 2>/dev/null || echo unknown),Cygwin)

 $(obj)/mconf: LDFLAGS += -Wl,--enable-auto-import

 endif

 # These are generated files:

 ALL_OBJS = $(sort $(COMMON_OBJ) $(LX_OBJ) $(conf_OBJ) $(mconf_OBJ))

 ALL_DEPS = $(sort $(COMMON_DEP) $(LX_DEP) $(conf_DEP) $(mconf_DEP))

 # Cheesy auto-dependencies

 # Only parse the following if a configurator was called, to avoid building

 # dependencies when not needed (eg. list-steps, list-samples...)

 # We must be carefull what we enclose, because we need some of the variable

 # definitions for clean (and distclean) at least.

 # Just protecting the "-include $(DEPS)" line should be sufficient.

 # And in case we want menuconfig, we have to check that lxdialog

 # can find a curses lib.

 ifneq ($(strip $(MAKECMDGOALS)),)

 ifneq ($(strip $(filter $(configurators),$(MAKECMDGOALS))),)

 DEPS = $(COMMON_DEP)

 ifneq ($(strip $(filter oldconfig,$(MAKECMDGOALS))),)

 DEPS += $(conf_DEP)

 endif

 ifneq ($(strip $(filter menuconfig,$(MAKECMDGOALS))),)

 DEPS += $(mconf_DEP) $(LX_DEP)

 $(COMMON_OBJ) $(COMMON_DEP): |dochecklxdialog

 $(LX_OBJ) $(LX_DEP): |dochecklxdialog

 $(mconf_OBJ) $(mconf_DEP): |dochecklxdialog

 endif

 -include $(DEPS)

 endif # MAKECMDGOALS contains a configurator rule

 endif # MAKECMDGOALS != ""

 # Each .o or .dep *can not* directly depend on kconfig/, because kconfig can

 # be touched during the build (who's touching it, btw?) so each .o or .dep

 # would be re-built when it sould not be.

 # So manually check for presence of $(obj) (ie. kconfig), and only mkdir

 # if needed. After all, that's not so bad...

 # mkdir $(obj)/lxdialog, because we need it, and incidentally, that

 # also creates $(obj).

 define check_kconfig_dir

 	$(SILENT)if [ ! -d $(obj)/lxdialog ]; then  \

 	   $(ECHO) "  MKDIR $(obj)";           \

 	   mkdir -p $(obj)/lxdialog;        \

 	 fi

 endef

 # Build the dependency for C files

 %.dep: %.c $(CT_LIB_DIR)/kconfig/kconfig.mk

 	$(check_kconfig_dir)

 	@$(ECHO) "  DEP   $@"

 	$(SILENT)$(HOST_CC) $(CFLAGS) $(EXTRA_CFLAGS) -MM $< |$(sed) -r -e 's|([^:]+.o)( *:+)|$(<:.c=.o) $@\2|;' >$@

 # Build C files

 %.o: %.c $(CT_LIB_DIR)/kconfig/kconfig.mk

 	$(check_kconfig_dir)

 	@$(ECHO) "  CC    $@"

 	$(SILENT)$(HOST_CC) $(CFLAGS) $(EXTRA_CFLAGS) -o $@ -c $<

 # Actual link

 $(obj)/mconf: $(COMMON_OBJ) $(LX_OBJ) $(mconf_OBJ)

 	@$(ECHO) '  LD    $@'

 	$(SILENT)$(HOST_LD) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)

 $(obj)/conf: $(COMMON_OBJ) $(conf_OBJ)

 	@$(ECHO) '  LD    $@'

 	$(SILENT)$(HOST_LD) -o $@ $^ $(LDFLAGS) $(EXTRA_LDFLAGS)

 #-----------------------------------------------------------

 # Cleaning up the mess...

 clean::

 	@$(ECHO) "  CLEAN kconfig"

 	$(SILENT)rm -f kconfig/{,m}conf{,.exe} $(ALL_OBJS) $(ALL_DEPS)

 	$(SILENT)rmdir --ignore-fail-on-non-empty kconfig{/lxdialog,} 2>/dev/null || true