[gnome-continuous-yocto/gnomeostree-3.28-rocko: 7190/8267] image-prelink.bbclass: support binary reproducibility

[Emmanuele Bassi <ebassi src gnome org>]

commit f3da1613c4d19f599ecea34fc9ea7b9935a8a26a
Author: Juro Bystricky <juro bystricky intel com>
Date:   Wed Aug 9 10:48:24 2017 -0700

    image-prelink.bbclass: support binary reproducibility
    
    Conditionally support binary reproducibility in built images.
    If BUILD_REPRODUCIBLE_BINARIES = 1 then:
    
    1. Do not randomize library addresses
    2. Set/export PRELINK_TIMESTAMP to a reproducible value.
       If REPRODUCIBLE_TIMESTAMP_ROOTFS is specified, then the value will
       be used. Otherwise the timestamp will be derived from the top git commit.
    
    (From OE-Core rev: 40ce3db222f8557a01d041f8115d531cc90a54e8)
    
    Signed-off-by: Juro Bystricky <juro bystricky intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/classes/image-prelink.bbclass |   12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/meta/classes/image-prelink.bbclass b/meta/classes/image-prelink.bbclass
index 6fcd699..f3bb68b 100644
--- a/meta/classes/image-prelink.bbclass
+++ b/meta/classes/image-prelink.bbclass
@@ -36,7 +36,17 @@ prelink_image () {
        dynamic_loader=$(linuxloader)
 
        # prelink!
-       ${STAGING_SBINDIR_NATIVE}/prelink --root ${IMAGE_ROOTFS} -amR -N -c ${sysconfdir}/prelink.conf 
--dynamic-linker $dynamic_loader
+       if [ "$BUILD_REPRODUCIBLE_BINARIES" = "1" ]; then
+               bbnote " prelink: BUILD_REPRODUCIBLE_BINARIES..."
+               if [ "$REPRODUCIBLE_TIMESTAMP_ROOTFS" = "" ]; then
+                       export PRELINK_TIMESTAMP=`git log -1 --pretty=%ct `
+               else
+                       export PRELINK_TIMESTAMP=$REPRODUCIBLE_TIMESTAMP_ROOTFS
+               fi
+               ${STAGING_SBINDIR_NATIVE}/prelink --root ${IMAGE_ROOTFS} -am -N -c ${sysconfdir}/prelink.conf 
--dynamic-linker $dynamic_loader
+       else
+               ${STAGING_SBINDIR_NATIVE}/prelink --root ${IMAGE_ROOTFS} -amR -N -c 
${sysconfdir}/prelink.conf --dynamic-linker $dynamic_loader
+       fi
 
        # Remove the prelink.conf if we had to add it.
        if [ "$dummy_prelink_conf" = "true" ]; then