classes/recipes: Use expanded BUILD_REPRODUCIBLE_BINARIES value

Replace the occurences of BUILD_REPRODUCIBLE_BINARIES with expanded
values ${BUILD_REPRODUCIBLE_BINARIES} so the variable does not need to be
exported.

(From OE-Core rev: 27f87bbc8395a2481ef808465a62d213a6b678ac)

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/image-prelink.bbclass

@@ -36,7 +36,7 @@ prelink_image () {
 	dynamic_loader=$(linuxloader)
 
 	# prelink!
-	if [ "$BUILD_REPRODUCIBLE_BINARIES" = "1" ]; then
+	if [ "${BUILD_REPRODUCIBLE_BINARIES}" = "1" ]; then
 		bbnote " prelink: BUILD_REPRODUCIBLE_BINARIES..."
 		if [ "$REPRODUCIBLE_TIMESTAMP_ROOTFS" = "" ]; then
 			export PRELINK_TIMESTAMP=`git log -1 --pretty=%ct `

meta/classes/image.bbclass

@@ -664,7 +664,7 @@ ROOTFS_PREPROCESS_COMMAND += "${@bb.utils.contains('DISTRO_FEATURES', 'usrmerge'
 POPULATE_SDK_PRE_TARGET_COMMAND += "${@bb.utils.contains('DISTRO_FEATURES', 'usrmerge', 'create_merged_usr_symlinks_sdk; ', '',d)}"
 
 reproducible_final_image_task () {
-    if [ "$BUILD_REPRODUCIBLE_BINARIES" = "1" ]; then
+    if [ "${BUILD_REPRODUCIBLE_BINARIES}" = "1" ]; then
         if [ "$REPRODUCIBLE_TIMESTAMP_ROOTFS" = "" ]; then
             REPRODUCIBLE_TIMESTAMP_ROOTFS=`git log -1 --pretty=%ct`
         fi

meta/classes/kernel.bbclass

@@ -279,7 +279,7 @@ get_cc_option () {
 
 kernel_do_compile() {
 	unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
-	if [ "$BUILD_REPRODUCIBLE_BINARIES" = "1" ]; then
+	if [ "${BUILD_REPRODUCIBLE_BINARIES}" = "1" ]; then
 		# kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not
 		# be set....
 		if [ "$SOURCE_DATE_EPOCH" = "0" ]; then