[rdc] base-files: gracefully handle empty variables in preinit (#11155)

[openwrt.git] / include / unpack.mk

diff --git a/include/unpack.mk b/include/unpack.mk
index ddd5fd1..2d35863 100644 (file)
--- a/include/unpack.mk
+++ b/include/unpack.mk
@@ -16,8 +16,9 @@ UNZIP_CMD=unzip -d $(1)/.. $(DL_DIR)/$(PKG_SOURCE)
 
 ifeq ($(PKG_SOURCE),)
   PKG_UNPACK ?= true
-endif
-ifeq ($(strip $(PKG_UNPACK))$(strip $(HOST_UNPACK)),)
+else
+
+ifeq ($(strip $(UNPACK_CMD)),)
   ifeq ($(strip $(PKG_CAT)),)
     # try to autodetect file type
     EXT:=$(call ext,$(PKG_SOURCE))
@@ -31,7 +32,11 @@ ifeq ($(strip $(PKG_UNPACK))$(strip $(HOST_UNPACK)),)
       EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
       DECOMPRESS_CMD:=bzcat $(DL_DIR)/$(PKG_SOURCE) |
     endif
-    ifeq ($(filter tgz tbz tbz2,$(EXT1)),$(EXT1))
+    ifeq ($(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) |
@@ -63,6 +68,14 @@ ifeq ($(strip $(PKG_UNPACK))$(strip $(HOST_UNPACK)),)
   else
     CRLF_CMD :=
   endif
-  PKG_UNPACK := $(call UNPACK_CMD,$(PKG_BUILD_DIR)) $(call CRLF_CMD,$(PKG_BUILD_DIR))
-  HOST_UNPACK := $(call UNPACK_CMD,$(HOST_BUILD_DIR)) $(call CRLF_CMD,$(HOST_BUILD_DIR))
 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
+