[adm5120] simplified image file generation

[openwrt.git] / include / host.mk

diff --git a/include/host.mk b/include/host.mk
index 278ad72..d163c99 100644 (file)
--- a/include/host.mk
+++ b/include/host.mk
@@ -1,14 +1,18 @@
 # 
-# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2007 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
 #
 
-include $(TMP_DIR)/.host.mk
+TMP_DIR ?= $(TOPDIR)/tmp
+-include $(TMP_DIR)/.host.mk
 
 export TAR
 
+ifneq ($(__host_inc),1)
+__host_inc:=1
+.PRECIOUS: $(TMP_DIR)/.host.mk
 $(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
        @mkdir -p $(TMP_DIR)
        @( \
@@ -23,12 +27,21 @@ $(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
                echo "HOST_OS:=$$HOST_OS" > $@; \
                echo "HOST_ARCH:=$$HOST_ARCH" >> $@; \
                echo "GNU_HOST_NAME:=$$GNU_HOST_NAME" >> $@; \
-               TAR=`which gtar`; \
-               [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar`; \
+               TAR=`which gtar 2>/dev/null`; \
+               [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar 2>/dev/null`; \
                echo "TAR:=$$TAR" >> $@; \
-               ZCAT=`which gzcat`; \
-               [ -n "$$ZCAT" -a -x "$$ZCAT" ] || ZCAT=`which zcat`; \
-               echo "ZCAT:=$$ZCAT" >> $@; \
                echo "BASH:=$(shell which bash)" >> $@; \
+               if find -L /tmp -maxdepth 0 >/dev/null 2>/dev/null; then \
+                       echo 'FIND_L=find -L $$(1)' >>$@; \
+               else \
+                       echo 'FIND_L=find $$(1) -follow' >> $@; \
+               fi; \
        )
 
+endif
+
+ifeq ($(HOST_OS),Linux)
+  XARGS:=xargs -r
+else
+  XARGS:=xargs
+endif