.PHONY: clean all rel_mktemp_dir console help

include build.mk

CONTROLLER_REL_TAR:=$(CURDIR)/controller_$(shell date +%Y%m%d%H%M).tar.gz
CONSOLE_REL_TAR:=$(CURDIR)/console_$(shell date +%Y%m%d%H%M).tar.gz

all: common controller console

help:
	@echo "Available build rules"; \
	echo  "---------------------"; \
	echo "   console             Build all executables for the console"; \
	echo "   controller          Build the controller executables"; \
	echo "   all                 Build both controller and console"; \
	echo "   release_console     Build a release tar file for the console"; \
	echo "   release_controller  Build a release tar file for the controller"; \
	echo "   release             Build both controller and console release"; \
	echo "   clean               Clean for both controller and console"; \
	echo ""; \
	echo "   HOST=<prefix>       Cross compile for <prefix>.";\
	echo "                       e.g.: HOST=arm-linux-gnueabihf"; \
	echo ""; \
	echo "Building a release"; \
	echo "------------------"; \
	echo "Simply running \"make release\" will build both the console and"; \
	echo "controller. They are stored in individual tar files, in the root"; \
	echo "of the dt_ctrl directory."; \
	echo "The releases are built in a temporary work directory from a clean"; \
	echo "git checkout. A release to be used for production must always"; \
	echo "be built from a version which is already committed to the"; \
	echo "golden repository (on eris.camras.nl)."


libnova/libnova.h: lib/libnova.la
libnova.la: lib/libnova.la
lib/libnova.la:
	cd libnova-0.13.0 ; ./configure -enable-static -disable-shared --prefix=${CURDIR} $(CONF_HOST); make; make install

clean: subdirs_CLEAN
	rm -rf lib/*
	rm -rf include/libnova
	cd libnova-0.13.0 ; make clean || true

# Rules for building a release

rel_mktemp_dir:
	$(eval REL_BUILD_DIR:=$(shell mktemp -d /tmp/dt_ctrl_XXXXXX))
	@echo "****** Building code in dir: $(REL_BUILD_DIR)"

rel_clone_dir: rel_mktemp_dir
	@echo "****** Creating clean checkout of source"; \
	git clone . $(REL_BUILD_DIR) >/dev/null; \
	echo "       Done"

rel_utils: rel_clone_dir
	@echo "****** Building common/utils"; \
	$(MAKE) -C $(REL_BUILD_DIR)/common/utils >/dev/null; \
	echo "       Done"

rel_trace: rel_utils
	@echo "****** Building common/trace"; \
	$(MAKE) -C $(REL_BUILD_DIR)/common/trace >/dev/null; \
	echo "       Done"

rel_command: rel_utils
	@echo "****** Building common/command"; \
	$(MAKE) -C $(REL_BUILD_DIR)/common/command >/dev/null; \
	echo "       Done"

rel_log:
	@echo "****** Building common/log"; \
	$(MAKE) -C $(REL_BUILD_DIR)/common/log >/dev/null; \
	echo "       Done"

rel_ctrl: rel_trace rel_log rel_command
	@echo "****** Building controller"; \
	$(MAKE) -C $(REL_BUILD_DIR)/controller >/dev/null; \
	echo "       Done"


rel_libnova: rel_clone_dir
	@echo "****** Building libnova"; \
	(cd $(REL_BUILD_DIR)/libnova-0.13.0 ; ./configure -enable-static -disable-shared --prefix=$(REL_BUILD_DIR) $(CONF_HOST); make; make install) >/dev/null; \
	echo "       Done"


rel_cons: rel_trace rel_libnova rel_log rel_command
	@echo "****** Building console"; \
	$(MAKE) -C $(REL_BUILD_DIR)/console >/dev/null; \
	echo "       Done"


$(CONSOLE_REL_TAR): rel_cons
	@tar -C $(REL_BUILD_DIR)/release -zhcf $@ console
	@echo "****** Created console release file $@"


$(CONTROLLER_REL_TAR): rel_ctrl
	@tar -C $(REL_BUILD_DIR)/release -zhcf $@ controller
	@echo "****** Created controller release file $@"

release: $(CONSOLE_REL_TAR) $(CONTROLLER_REL_TAR)
release_console: $(CONSOLE_REL_TAR)
release_controller: $(CONTROLLER_REL_TAR)

DIR := .
SRCS :=
TARGETS := 
CLEAN :=

define SUBDIR
ifeq ($(DIR),.)
  DIR := $1
else
  DIR := $(DIR)/$1
endif

$(DIR)_TMPTARGETS:=$(value TARGETS)
TARGETS:=

include $(DIR)/$1/build.mk

targets_$$(DIR): $$(TARGETS)
$$(TARGETS): $(DIR)/$1/build.mk

TARGETS:= $$($(DIR)_TMPTARGETS) $$(TARGETS)

DIR := $(DIR)
endef

CFLAGS := -pthread -D_GNU_SOURCE -Icommon -Icommon/include -Icontroller -Iconsole/console -Iinclude
LDFLAGS := -pthread -Lcommon/lib -Lcontroller/lib -Lconsole/console/lib -Llib -Wl,--as-needed
VPATH += common/lib controller/lib console/console/lib lib
VPATH += include


TARGETS:=
$(eval $(call SUBDIR,common))
common: $(TARGETS)

TARGETS:=
$(eval $(call SUBDIR,controller))
controller: $(TARGETS)

TARGETS:=
$(eval $(call SUBDIR,console))
console: $(TARGETS)



SRCS_TMP:=$(SRCS:.il=.il2c.d)
DEPS:=$(SRCS_TMP:.c=.d)
DEPSLIBS:=$(foreach DEP,$(DEPS),$(dir $(DEP)).libs/$(notdir $(DEP)))
-include $(DEPS) $(DEPSLIBS)

CLEAN += $(DEPS) $(DEPSLIBS)

SRCS_IL = $(filter %.il,$(SRCS))
$(SRCS_IL): $(IL2C)


subdirs_CLEAN:
	$(foreach CLEANITEM,$(CLEAN), rm -rf $(CLEANITEM);)