syslinux: Fix reproducibility issues

Add sorting to wildcard expansion in the makefile to make builds
reproducible.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5541ba76ccc0c416f315bc0dc14a20a33059bd5f)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

diff --git a/meta/recipes-devtools/syslinux/syslinux/determinism.patch b/meta/recipes-devtools/syslinux/syslinux/determinism.patch
new file mode 100644 (file)
index 0000000..2fb8c64
--- /dev/null
+++ b/meta/recipes-devtools/syslinux/syslinux/determinism.patch
@@ -0,0 +1,22 @@
+In order to build deterministic binaries, we need to sort the wildcard expansion
+so the libraries are linked in the same order each time. This fixes reproducibility
+issues within syslinux builds.
+
+Upstream-Status: Pending
+RP 2021/3/1
+
+Index: syslinux-6.04-pre2/mk/lib.mk
+===================================================================
+--- syslinux-6.04-pre2.orig/mk/lib.mk
++++ syslinux-6.04-pre2/mk/lib.mk
+@@ -130,8 +130,8 @@ LIBENTRY_OBJS = \
+       exit.o
+ 
+ LIBGCC_OBJS = \
+-        $(patsubst $(com32)/lib/%.c,%.o,$(wildcard $(com32)/lib/$(ARCH)/libgcc/*.c)) \
+-        $(patsubst $(com32)/lib/%.S,%.o,$(wildcard $(com32)/lib/$(ARCH)/libgcc/*.S))
++        $(sort $(patsubst $(com32)/lib/%.c,%.o,$(wildcard $(com32)/lib/$(ARCH)/libgcc/*.c))) \
++        $(sort $(patsubst $(com32)/lib/%.S,%.o,$(wildcard $(com32)/lib/$(ARCH)/libgcc/*.S)))
+ 
+ LIBCONSOLE_OBJS = \
+       \

diff --git a/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb b/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb
index 4ac46ed57f66e272ad8e4dad53b1a28eb55a71da..a5618327bf44da270837f3221c37fa27498a1246 100644 (file)
--- a/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb
+++ b/meta/recipes-devtools/syslinux/syslinux_6.04-pre2.bb
@@ -23,11 +23,16 @@ SRC_URI = "https://www.zytor.com/pub/syslinux/Testing/6.04/syslinux-${PV}.tar.xz
            file://0009-linux-syslinux-implement-install_bootblock.patch \
            file://0010-Workaround-multiple-definition-of-symbol-errors.patch \
            file://0001-install-don-t-install-obsolete-file-com32.ld.patch \
+           file://determinism.patch \
            "
 
 SRC_URI[md5sum] = "2b31c78f087f99179feb357da312d7ec"
 SRC_URI[sha256sum] = "4441a5d593f85bb6e8d578cf6653fb4ec30f9e8f4a2315a3d8f2d0a8b3fadf94"
 
+# remove at next version upgrade or when output changes
+PR = "r1"
+HASHEQUIV_HASH_VERSION .= ".1"
+
 UPSTREAM_CHECK_URI = "https://www.zytor.com/pub/syslinux/"
 UPSTREAM_CHECK_REGEX = "syslinux-(?P<pver>.+)\.tar"
 UPSTREAM_VERSION_UNKNOWN = "1"