linux-leviathan: fix the "empty.gz already exists" message

if we don't check if empty and empty.gz already exist,
The fist time empty.gz is copied to the deploy dir,
then the second build we have:
  gzip: empty.gz already exists;	not overwritten
And it fails.
so we need to touch and gzip only if empty.gz not already present.

diff --git a/recipes/linux/linux-leviathan_git.bb b/recipes/linux/linux-leviathan_git.bb
index bc8a477..f5a7d21 100644 (file)
--- a/recipes/linux/linux-leviathan_git.bb
+++ b/recipes/linux/linux-leviathan_git.bb
@@ -2,7 +2,7 @@ require linux.inc
 DEPENDS += "android-image-utils-native"
 
 PV = "2.6.32+${PR}+gitr${SRCREV}"
-PR = "r18"
+PR = "r19"
 
 COMPATIBLE_MACHINE = "htcdream"
 CMDLINE = "console=tty1 root=/dev/mmcblk0p1 rootdelay=8 fbcon=rotate:1 panic=30 mem=110M"
@@ -17,8 +17,12 @@ SRC_URI = "\
 S = "${WORKDIR}/git"
 
 do_deploy_append() {
-    touch -f empty
-    gzip empty
+    if [ ! -e empty.gz ];then
+        if [ ! -e empty ];then
+            touch empty
+        fi
+        gzip empty
+    fi
     mkbootimg --kernel ${DEPLOY_DIR_IMAGE}/${KERNEL_IMAGE_BASE_NAME}.bin \
               --ramdisk empty.gz \
               --cmdline "${CMDLINE}" \