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include $(TOPDIR)/include/verbose.mk
TMP_DIR:=$(TOPDIR)/tmp

all: $(TMP_DIR)/.$(SCAN_TARGET)

SCAN_TARGET ?= packageinfo
SCAN_NAME ?= package
SCAN_DIR ?= package
TARGET_STAMP:=$(TMP_DIR)/info/.files-$(SCAN_TARGET).stamp
FILELIST:=$(TMP_DIR)/info/.files-$(SCAN_TARGET)-$(SCAN_COOKIE)
OVERRIDELIST:=$(TMP_DIR)/info/.overrides-$(SCAN_TARGET)-$(SCAN_COOKIE)

export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)

ifeq ($(SCAN_NAME),target)
  SCAN_DEPS=image/Makefile profiles/*.mk $(TOPDIR)/include/kernel*.mk $(TOPDIR)/include/target.mk image/*.mk
else
  SCAN_DEPS=$(TOPDIR)/include/package*.mk
endif

ifeq ($(IS_TTY),1)
  ifneq ($(strip $(NO_COLOR)),1)
    define progress
        printf "\033[M\r$(1)" >&2;
    endef
  else
    define progress
        printf "\r$(1)" >&2;
    endef
  endif
else
  define progress
        :;
  endef
endif

define feedname
$(if $(patsubst feeds/%,,$(1)),,$(word 2,$(subst /, ,$(1))))
endef

define PackageDir
  $(TMP_DIR)/.$(SCAN_TARGET): $(TMP_DIR)/info/.$(SCAN_TARGET)-$(1)
  $(TMP_DIR)/info/.$(SCAN_TARGET)-$(1): $(SCAN_DIR)/$(2)/Makefile $(foreach DEP,$(DEPS_$(SCAN_DIR)/$(2)/Makefile) $(SCAN_DEPS),$(wildcard $(if $(filter /%,$(DEP)),$(DEP),$(SCAN_DIR)/$(2)/$(DEP))))
        { \
                $$(call progress,Collecting $(SCAN_NAME) info: $(SCAN_DIR)/$(2)) \
                echo Source-Makefile: $(SCAN_DIR)/$(2)/Makefile; \
                $(if $(3),echo Override: $(3),true); \
                $(NO_TRACE_MAKE) --no-print-dir -r DUMP=1 FEED="$(call feedname,$(2))" -C $(SCAN_DIR)/$(2) $(SCAN_MAKEOPTS) 2>/dev/null || { \
                        mkdir -p "$(TOPDIR)/logs/$(SCAN_DIR)/$(2)"; \
                        $(NO_TRACE_MAKE) --no-print-dir -r DUMP=1 FEED="$(call feedname,$(2))" -C $(SCAN_DIR)/$(2) $(SCAN_MAKEOPTS) > $(TOPDIR)/logs/$(SCAN_DIR)/$(2)/dump.txt 2>&1; \
                        $$(call progress,ERROR: please fix $(SCAN_DIR)/$(2)/Makefile - see logs/$(SCAN_DIR)/$(2)/dump.txt for details\n) \
                        rm -f $$@; \
                }; \
                echo; \
        } > $$@.tmp
        mv $$@.tmp $$@
endef

$(OVERRIDELIST):
        rm -f $(TMP_DIR)/info/.overrides-$(SCAN_TARGET)-*
        touch $@

ifeq ($(SCAN_NAME),target)
  GREP_STRING=BuildTarget
else
  GREP_STRING=(Build/DefaultTargets|BuildPackage|KernelPackage)
endif

$(FILELIST): $(OVERRIDELIST)
        rm -f $(TMP_DIR)/info/.files-$(SCAN_TARGET)-*
        find -L $(SCAN_DIR) $(SCAN_EXTRA) -mindepth 1 $(if $(SCAN_DEPTH),-maxdepth $(SCAN_DEPTH)) -name Makefile | xargs grep -aHE 'call $(GREP_STRING)' | sed -e 's#^$(SCAN_DIR)/##' -e 's#/Makefile:.*##' | uniq | awk -v of=$(OVERRIDELIST) -f include/scan.awk > $@

$(TMP_DIR)/info/.files-$(SCAN_TARGET).mk: $(FILELIST)
        ( \
                cat $< | awk '{print "$(SCAN_DIR)/" $$0 "/Makefile" }' | xargs grep -HE '^ *SCAN_DEPS *= *' | awk -F: '{ gsub(/^.*DEPS *= */, "", $$2); print "DEPS_" $$1 "=" $$2 }'; \
                awk -F/ -v deps="$$DEPS" -v of="$(OVERRIDELIST)" ' \
                BEGIN { \
                        while (getline < (of)) \
                                override[$$NF]=$$0; \
                        close(of) \
                } \
                { \
                        info=$$0; \
                        gsub(/\//, "_", info); \
                        dir=$$0; \
                        pkg=""; \
                        if($$NF in override) \
                                pkg=override[$$NF]; \
                        print "$$(eval $$(call PackageDir," info "," dir "," pkg "))"; \
                } ' < $<; \
                true; \
        ) > $@.tmp
        mv $@.tmp $@

-include $(TMP_DIR)/info/.files-$(SCAN_TARGET).mk

$(TARGET_STAMP)::
        +( \
                $(NO_TRACE_MAKE) $(FILELIST); \
                MD5SUM=$$(cat $(FILELIST) $(OVERRIDELIST) | mkhash md5 | awk '{print $$1}'); \
                [ -f "$@.$$MD5SUM" ] || { \
                        rm -f $@.*; \
                        touch $@.$$MD5SUM; \
                        touch $@; \
                } \
        )

$(TMP_DIR)/.$(SCAN_TARGET): $(TARGET_STAMP)
        $(call progress,Collecting $(SCAN_NAME) info: merging...)
        -cat $(FILELIST) | awk '{gsub(/\//, "_", $$0);print "$(TMP_DIR)/info/.$(SCAN_TARGET)-" $$0}' | xargs cat > $@ 2>/dev/null
        $(call progress,Collecting $(SCAN_NAME) info: done)
        echo

FORCE:
.PHONY: FORCE
.NOTPARALLEL: