simplify handling of zcat - always use gzip -dc. zcat and gzcat are either broken or nonexistant on some systems

SVN-Revision: 7096

include/host.mk

@@ -28,9 +28,6 @@ $(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
 		TAR=`which gtar 2>/dev/null`; \
 		[ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar 2>/dev/null`; \
 		echo "TAR:=$$TAR" >> $@; \
-		ZCAT=`which gzcat 2>/dev/null`; \
-		[ -n "$$ZCAT" -a -x "$$ZCAT" ] || ZCAT=`which zcat 2>/dev/null`; \
-		echo "ZCAT:=$$ZCAT" >> $@; \
 		echo "BASH:=$(shell which bash)" >> $@; \
 	)
 

include/unpack.mk

@@ -20,7 +20,7 @@ ifeq ($(strip $(PKG_UNPACK)),)
 
     ifeq ($(filter gz tgz,$(EXT)),$(EXT))
       EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
-      UNPACK:=$(ZCAT) $(DL_DIR)/$(PKG_SOURCE) |
+      UNPACK:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) |
     endif	
     ifeq ($(filter bzip2 bz2 bz tbz2 tbz,$(EXT)),$(EXT))
       EXT:=$(call ext,$(PKG_SOURCE:.$(EXT)=))
@@ -48,9 +48,9 @@ ifeq ($(strip $(PKG_UNPACK)),)
     ifeq ($(PKG_CAT),unzip)
       PKG_UNPACK:=$(UNZIP_CMD)
     endif
-    # replace zcat with $(ZCAT), because some system have it as gzcat
+    # replace zcat with $(ZCAT), because some system don't support it properly
     ifeq ($(PKG_CAT),zcat)
-      PKG_UNPACK:=$(ZCAT) $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
+      PKG_UNPACK:=gzip -dc $(DL_DIR)/$(PKG_SOURCE) | $(TAR_CMD)
     endif
   endif
   ifneq ($(strip $(CRLF_WORKAROUND)),)