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

# 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