syslinux: Fix reproducibility issues

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

(From OE-Core rev: 5541ba76ccc0c416f315bc0dc14a20a33059bd5f)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/meta/recipes-devtools/syslinux/syslinux/determinism.patch b/meta/recipes-devtools/syslinux/syslinux/determinism.patch
new file mode 100644
index 0000000000..2fb8c64df3
--- /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 = \
+        \