prelink: Enable image wide prelinking

Add the ability to specify user level classes via the local.conf.

Use this new capability to add an image-prelink class that does an
image wide cross-prelink activity.

Signed-off-by: Mark Hatle <mhatle@windriver.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/meta/classes/image-prelink.bbclass b/meta/classes/image-prelink.bbclass
new file mode 100644
index 0000000000..faf18142e6
--- /dev/null
+++ b/meta/classes/image-prelink.bbclass
@@ -0,0 +1,38 @@
+do_rootfs[depends] += "prelink-native:do_populate_sysroot"
+
+IMAGE_PREPROCESS_COMMAND += "prelink_image; "
+
+prelink_image () {
+#       export PSEUDO_DEBUG=4
+#       /bin/env | /bin/grep PSEUDO
+#       echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH"
+#       echo "LD_PRELOAD=$LD_PRELOAD"
+
+        pre_prelink_size=`du -ks ${IMAGE_ROOTFS} | awk '{size = $1 ; print size }'`
+        echo "Size before prelinking $pre_prelink_size."
+
+        # We need a prelink conf on the filesystem, add one if it's missing
+        if [ ! -e ${IMAGE_ROOTFS}/etc/prelink.conf ]; then
+                cp ${STAGING_DIR_NATIVE}/etc/prelink.conf \
+                        ${IMAGE_ROOTFS}/etc/prelink.conf
+                dummy_prelink_conf=true;
+        else
+                dummy_prelink_conf=false;
+        fi
+
+        # prelink!
+        ${STAGING_DIR_NATIVE}/usr/sbin/prelink --root ${IMAGE_ROOTFS} -amR
+
+        # Remove the prelink.conf if we had to add it.
+        if [ $dummy_prelink_conf ]; then
+                rm -f ${IMAGE_ROOTFS}/etc/prelink.conf
+        fi
+
+        # Cleanup temporary file, it's not needed...
+        rm -f ${IMAGE_ROOTFS}/etc/prelink.cache
+
+        pre_prelink_size=`du -ks ${IMAGE_ROOTFS} | awk '{size = $1 ; print size }'`
+        echo "Size after prelinking $pre_prelink_size."
+}
+
+EXPORT_FUNCTIONS prelink_image