openwrtv4/include/unpack.mk

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ifeq ($(strip $(PKG_UNPACK)),)
ifneq ($(strip $(PKG_CAT)),)
# use existing PKG_CAT
UNPACK:=$(PKG_CAT) $(DL_DIR)/$(PKG_SOURCE) | tar -C $(PKG_BUILD_DIR)/.. $(TAR_OPTIONS) -
ifeq ($(PKG_CAT),unzip)
UNPACK=unzip -d $(PKG_BUILD_DIR) $(DL_DIR)/$(PKG_SOURCE)
endif
# replace zcat with $(ZCAT), because some system have it as gzcat
ifeq ($(PKG_CAT),zcat)
UNPACK:=$(ZCAT) $(DL_DIR)/$(PKG_SOURCE) | tar -C $(PKG_BUILD_DIR)/.. $(TAR_OPTIONS) -
endif
else
# try to autodetect file type
endif
endif