1 files changed, 81 insertions, 0 deletions
diff --git a/include/unpack.mk b/include/unpack.mk
new file mode 100644
index 0000000..3fabf46
--- /dev/null
+++ b/include/unpack.mk
@@ -0,0 +1,81 @@
+#
+# Copyright (C) 2006-2007 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+# unpacking files with +s may break on some platforms. this typically emits error code 2
+ifneq ($(HOST_OS),Linux)
+  HOST_TAR:=trapret 2 $(TAR)
+else
+  HOST_TAR:=$(TAR)
+endif
+TAR_CMD=$(HOST_TAR) -C $(1)/.. $(TAR_OPTIONS)
+UNZIP_CMD=unzip -d $(1)/.. $(DL_DIR)/$(PKG_SOURCE)
+
+ifeq ($(PKG_SOURCE),)
+  PKG_UNPACK ?= true
+else
+
+ifeq ($(strip $(UNPACK_CMD)),)
+  ifeq ($(strip $(PKG_CAT)),)
+    # try to autodetect file type
+    EXT:=$(call ext,$(PKG_SOURCE))
+    EXT1:=$(EXT)
+
+    ifeq ($(filter gz tgz,$(EXT)),$(EXT))
+      EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
+      DECOMPRESS_CMD:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) |
+    endif
+    ifeq ($(filter bzip2 bz2 bz tbz2 tbz,$(EXT)),$(EXT))
+      EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
+      DECOMPRESS_CMD:=bzcat $(DL_DIR)/$(PKG_SOURCE) |
+    endif
+    ifeq ($(filter xz txz,$(EXT)),$(EXT))
+      EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
+      DECOMPRESS_CMD:=xzcat $(DL_DIR)/$(PKG_SOURCE) |
+    endif
+    ifeq ($(filter tgz tbz tbz2 txz,$(EXT1)),$(EXT1))
+      EXT:=tar
+    endif
+    DECOMPRESS_CMD ?= cat $(DL_DIR)/$(PKG_SOURCE) |
+    ifeq ($(EXT),tar)
+      UNPACK_CMD=$(DECOMPRESS_CMD) $(TAR_CMD)
+    endif
+    ifeq ($(EXT),cpio)
+      UNPACK_CMD=$(DECOMPRESS_CMD) (cd $(1)/..; cpio -i -d)
+    endif
+    ifeq ($(EXT),zip)
+      UNPACK_CMD=$(UNZIP_CMD)
+    endif
+  endif
+
+  # compatibility code for packages that set PKG_CAT
+  ifeq ($(strip $(UNPACK_CMD)),)
+    # use existing PKG_CAT
+    UNPACK_CMD=$(PKG_CAT) $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
+    ifeq ($(PKG_CAT),unzip)
+      UNPACK_CMD=$(UNZIP_CMD)
+    endif
+    # replace zcat with $(ZCAT), because some system don't support it properly
+    ifeq ($(PKG_CAT),zcat)
+      UNPACK_CMD=gzip -dc $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
+    endif
+  endif
+  ifneq ($(strip $(CRLF_WORKAROUND)),)
+    CRLF_CMD := && find $(PKG_BUILD_DIR) -type f -print0 | xargs -0 perl -pi -e 's!\r$$$$!!g'
+  else
+    CRLF_CMD :=
+  endif
+endif
+
+ifdef PKG_BUILD_DIR
+  PKG_UNPACK ?= $(SH_FUNC) $(call UNPACK_CMD,$(PKG_BUILD_DIR)) $(call CRLF_CMD,$(PKG_BUILD_DIR))
+endif
+ifdef HOST_BUILD_DIR
+  HOST_UNPACK ?= $(SH_FUNC) $(call UNPACK_CMD,$(HOST_BUILD_DIR)) $(call CRLF_CMD,$(HOST_BUILD_DIR))
+endif
+
+endif # PKG_SOURCE
+