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>
This commit is contained in:
Juro Bystricky
2017-08-09 10:48:24 -07:00
committed by Richard Purdie
parent 01d82ea619
commit f3da1613c4

View File

@@ -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