[OE-core] [PATCH 1/5] kernel-devsrc: tweak for v5.3+

[bruce.ashfield at gmail.com]

From: Bruce Ashfield <bruce.ashfield at gmail.com>

The 5.3 kernel has two changes that require tweaks to the minimal
kernel-devsrc package.

- 4ce97317f [x86/purgatory: Do not use __builtin_memcpy and __builtin_memset]

  This change removes the need for arch/x86/purgatory/string.c and
  instead reuses a copy in arch/x86/boot/compressed/, so we can't copy
  the file anymore. To support older kernels, we make the copy survive
  the non-existence of the file.

- b1663d7e [docs: Kbuild/Makefile: allow check for missing docs at build time]

  This change adds the sourceing of Documentation/Kbuild to the top
  level Kbuild file. So we now leave the copy of Documention/'s Kbuild
  in the devsrc.

Signed-off-by: Bruce Ashfield <bruce.ashfield at gmail.com>
---
 meta/recipes-kernel/linux/kernel-devsrc.bb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/recipes-kernel/linux/kernel-devsrc.bb b/meta/recipes-kernel/linux/kernel-devsrc.bb
index 5ec5929735..3900489ac5 100644
--- a/meta/recipes-kernel/linux/kernel-devsrc.bb
+++ b/meta/recipes-kernel/linux/kernel-devsrc.bb
@@ -65,7 +65,6 @@ do_install() {
     )
 
     # then drop all but the needed Makefiles/Kconfig files
-    rm -rf $kerneldir/build/Documentation
     rm -rf $kerneldir/build/scripts
     rm -rf $kerneldir/build/include
 
@@ -205,11 +204,12 @@ do_install() {
 	    cp -a --parents arch/x86/purgatory/sha256.c $kerneldir/build/ 2>/dev/null || :
 
 	    cp -a --parents arch/x86/purgatory/stack.S $kerneldir/build/
-	    cp -a --parents arch/x86/purgatory/string.c $kerneldir/build/
+	    cp -a --parents arch/x86/purgatory/string.c $kerneldir/build/ 2>/dev/null || :
 	    cp -a --parents arch/x86/purgatory/setup-x86_64.S $kerneldir/build/
 	    cp -a --parents arch/x86/purgatory/entry64.S $kerneldir/build/
 	    cp -a --parents arch/x86/boot/string.h $kerneldir/build/
 	    cp -a --parents arch/x86/boot/string.c $kerneldir/build/
+	    cp -a --parents arch/x86/boot/compressed/string.c $kerneldir/build/ 2>/dev/null || :
 	    cp -a --parents arch/x86/boot/ctype.h $kerneldir/build/
 	fi
 
-- 
2.19.1