1# 
2# Copyright (C) 2006-2007 OpenWrt.org
3#
4# This is free software, licensed under the GNU General Public License v2.
5# See /LICENSE for more information.
6#
7
8# unpacking files with +s may break on some platforms. this typically emits error code 2
9ifneq ($(HOST_OS),Linux)
10  HOST_TAR:=trapret 2 $(TAR)
11else
12  HOST_TAR:=$(TAR)
13endif
14TAR_CMD:=$(HOST_TAR) -C $(PKG_BUILD_DIR)/.. $(TAR_OPTIONS)
15UNZIP_CMD:=unzip -d $(PKG_BUILD_DIR)/.. $(DL_DIR)/$(PKG_SOURCE)
16
17ifeq ($(PKG_SOURCE),)
18  PKG_UNPACK ?= true
19endif
20ifeq ($(strip $(PKG_UNPACK)),)
21  ifeq ($(strip $(PKG_CAT)),)
22    # try to autodetect file type
23    EXT:=$(call ext,$(PKG_SOURCE))
24    EXT1:=$(EXT)
25
26    ifeq ($(filter gz tgz,$(EXT)),$(EXT))
27      EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
28      UNPACK:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) |
29    endif	
30    ifeq ($(filter bzip2 bz2 bz tbz2 tbz,$(EXT)),$(EXT))
31      EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
32      UNPACK:=bzcat $(DL_DIR)/$(PKG_SOURCE) |
33    endif
34    ifeq ($(filter tgz tbz tbz2,$(EXT1)),$(EXT1))
35      EXT:=tar
36    endif
37    UNPACK ?= cat $(DL_DIR)/$(PKG_SOURCE) |
38    ifeq ($(EXT),tar)
39      PKG_UNPACK:=$(UNPACK) $(TAR_CMD)
40    endif
41    ifeq ($(EXT),cpio)
42      PKG_UNPACK:=$(UNPACK) (cd $(PKG_BUILD_DIR)/..; cpio -i -d)
43    endif
44    ifeq ($(EXT),zip)
45      PKG_UNPACK:=$(UNZIP_CMD)
46    endif
47  endif
48 
49  # compatibility code for packages that set PKG_CAT
50  ifeq ($(strip $(PKG_UNPACK)),)
51    # use existing PKG_CAT
52    PKG_UNPACK:=$(PKG_CAT) $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
53    ifeq ($(PKG_CAT),unzip)
54      PKG_UNPACK:=$(UNZIP_CMD)
55    endif
56    # replace zcat with $(ZCAT), because some system don't support it properly
57    ifeq ($(PKG_CAT),zcat)
58      PKG_UNPACK:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
59    endif
60  endif
61  ifneq ($(strip $(CRLF_WORKAROUND)),)
62    PKG_UNPACK += && find $(PKG_BUILD_DIR) -type f -print0 | xargs -0 perl -pi -e 's!\r$$$$!!g'
63  endif
64endif
65