# QT_PROJECTS	   .. list of QT .pro file to use for compilation
# QT_SUBDIRS       .. subdirectories where to build QT applications using qmake (depricated)
# QTDIR		   .. where QT resides

ifneq ($(QT_SUBDIRS)$(QT_PROJECTS),)

# Usage: $(call qt_project_template,<.pro_file relative to SOURCES_DIR>)
define qt_project_template

.PHONY: qt-subpass-$(1) clean-qt-$(dir $(1))

# FIXME: Handle multiple .pro files correctly
$(LOCAL_BUILD_DIR)/$(dir $(1))Makefile: $(SOURCES_DIR)/$(1)
	$(Q)mkdir -p $$(dir $$(@)) && cd $$(dir $$(@)) &&		\
	$(QTDIR:%=%/bin/)qmake						\
	     TOP_DIR=$(OUTPUT_DIR)					\
	     RELATIVE_DIR=$(RELATIVE_PREFIX)$(dir $(1))			\
	     $(QTDIR:%=QTDIR=%) CC=$(CC) CXX=$(CXX)			\
	     LIBS+="-L$(USER_LIB_DIR)" DESTDIR=$(USER_BIN_DIR)		\
	     INCLUDEPATH+="$(USER_INCLUDE_DIR)"				\
	     QMAKE_LFLAGS="-Wl,-rpath-link,$(USER_LIB_DIR) $$(QMAKE_LFLAGS)" \
	     $(SOURCES_DIR)/$(1)

# This horrible substitution is here to properly escape
# -Wl,-rpath,$ORIGIN flags. It includes escaping for make, shell,
# qmake and again make and shell run on qmake generated makefile.
QMAKE_LFLAGS = $$(subst $$$$,\\\\\\$$$$\$$$$,$$(LDFLAGS))

# Hook to binary pass
binary-pass-submakes: qt-subpass-$(1)
qt-subpass-$(1): $(LOCAL_BUILD_DIR)/$(dir $(1))Makefile
	$(Q)$(MAKE) SOURCES_DIR=$(SOURCES_DIR)/$(dir $(1)) \
		RELATIVE_DIR=$(RELATIVE_PREFIX)$(dir $(1)) -C $(LOCAL_BUILD_DIR)/$(dir $(1)) || exit 1 ;

# Hook to clean pass
clean-local: clean-qt-$(dir $(1))
clean-qt-$(dir $(1)): $(LOCAL_BUILD_DIR)/$(dir $(1))Makefile
	@$(QUIET_CMD_ECHO) "  QT CLEAN $(dir $(1))"
	$(Q)$(MAKE) SOURCES_DIR=$(SOURCES_DIR)/$(dir $(1)) \
	  RELATIVE_DIR=$(RELATIVE_PREFIX)$(dir $(1)) \
	  -C $(LOCAL_BUILD_DIR)/$(dir $(1)) clean
	$(Q)rm $(LOCAL_BUILD_DIR)/$(dir $(1))Makefile
endef

$(foreach pro,$(QT_PROJECTS), $(eval $(call qt_project_template,$(pro))))
$(foreach pro,$(foreach dir,$(QT_SUBDIRS), $(wildcard $(dir)/*.pro)), $(eval $(call qt_project_template,$(pro))))

endif

# Local Variables:
# mode:makefile
# End: