[3rdparty][PATCH] linux-wandboard: fix for gcc7

[3rdparty][PATCH] linux-wandboard: fix for gcc7

[Trevor Woerner]

Allow the linux-wandboard kernel to build successfully with gcc7.

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
---
 .../0001-fix-build-for-gcc7.patch                  | 99 ++++++++++++++++++++++
 recipes-kernel/linux/linux-wandboard_4.1.15.bb     |  1 +
 2 files changed, 100 insertions(+)
 create mode 100644 recipes-kernel/linux/linux-wandboard-4.1.15/0001-fix-build-for-gcc7.patch

diff --git a/recipes-kernel/linux/linux-wandboard-4.1.15/0001-fix-build-for-gcc7.patch b/recipes-kernel/linux/linux-wandboard-4.1.15/0001-fix-build-for-gcc7.patch
new file mode 100644
index 0000000..03b09f3
--- /dev/null
+++ b/recipes-kernel/linux/linux-wandboard-4.1.15/0001-fix-build-for-gcc7.patch
@@ -0,0 +1,99 @@
+From 81ae0fca9b92cb9e02568a5777f83d8b8eb69104 Mon Sep 17 00:00:00 2001
+From: Trevor Woerner <twoerner@gmail.com>
+Date: Tue, 20 Jun 2017 13:25:20 -0400
+Subject: [PATCH] fix build for gcc7
+
+| In file included from .../include/linux/compiler.h:54:0,
+|                  from .../include/uapi/linux/stddef.h:1,
+|                  from .../include/linux/stddef.h:4,
+|                  from .../include/uapi/linux/posix_types.h:4,
+|                  from .../include/uapi/linux/types.h:13,
+|                  from .../include/linux/types.h:5,
+|                  from .../include/linux/mod_devicetable.h:11,
+|                  from .../scripts/mod/devicetable-offsets.c:2:
+| .../include/linux/compiler-gcc.h:121:1: fatal error: linux/compiler-gcc7.h: No such file or directory
+|  #include gcc_header(__GNUC__)
+
+Upstream-Status: Submitted [https://github.com/wandboard-org/linux/pull/7]
+
+Signed-off-by: Trevor Woerner <twoerner@gmail.com>
+---
+ include/linux/compiler-gcc7.h | 66 +++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 66 insertions(+)
+ create mode 100644 include/linux/compiler-gcc7.h
+
+diff --git a/include/linux/compiler-gcc7.h b/include/linux/compiler-gcc7.h
+new file mode 100644
+index 000000000000..cdd1cc202d51
+--- /dev/null
++++ b/include/linux/compiler-gcc7.h
+@@ -0,0 +1,66 @@
++#ifndef __LINUX_COMPILER_H
++#error "Please don't include <linux/compiler-gcc5.h> directly, include <linux/compiler.h> instead."
++#endif
++
++#define __used				__attribute__((__used__))
++#define __must_check			__attribute__((warn_unused_result))
++#define __compiler_offsetof(a, b)	__builtin_offsetof(a, b)
++
++/* Mark functions as cold. gcc will assume any path leading to a call
++   to them will be unlikely.  This means a lot of manual unlikely()s
++   are unnecessary now for any paths leading to the usual suspects
++   like BUG(), printk(), panic() etc. [but let's keep them for now for
++   older compilers]
++
++   Early snapshots of gcc 4.3 don't support this and we can't detect this
++   in the preprocessor, but we can live with this because they're unreleased.
++   Maketime probing would be overkill here.
++
++   gcc also has a __attribute__((__hot__)) to move hot functions into
++   a special section, but I don't see any sense in this right now in
++   the kernel context */
++#define __cold			__attribute__((__cold__))
++
++#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
++
++#ifndef __CHECKER__
++# define __compiletime_warning(message) __attribute__((warning(message)))
++# define __compiletime_error(message) __attribute__((error(message)))
++#endif /* __CHECKER__ */
++
++/*
++ * Mark a position in code as unreachable.  This can be used to
++ * suppress control flow warnings after asm blocks that transfer
++ * control elsewhere.
++ *
++ * Early snapshots of gcc 4.5 don't support this and we can't detect
++ * this in the preprocessor, but we can live with this because they're
++ * unreleased.  Really, we need to have autoconf for the kernel.
++ */
++#define unreachable() __builtin_unreachable()
++
++/* Mark a function definition as prohibited from being cloned. */
++#define __noclone	__attribute__((__noclone__))
++
++/*
++ * Tell the optimizer that something else uses this function or variable.
++ */
++#define __visible __attribute__((externally_visible))
++
++/*
++ * GCC 'asm goto' miscompiles certain code sequences:
++ *
++ *   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
++ *
++ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
++ * Fixed in GCC 4.8.2 and later versions.
++ *
++ * (asm goto is automatically volatile - the naming reflects this.)
++ */
++#define asm_volatile_goto(x...)	do { asm goto(x); asm (""); } while (0)
++
++#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
++#define __HAVE_BUILTIN_BSWAP32__
++#define __HAVE_BUILTIN_BSWAP64__
++#define __HAVE_BUILTIN_BSWAP16__
++#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
+-- 
+2.12.3
+
diff --git a/recipes-kernel/linux/linux-wandboard_4.1.15.bb b/recipes-kernel/linux/linux-wandboard_4.1.15.bb
index 3371322..e0cb71a 100644
--- a/recipes-kernel/linux/linux-wandboard_4.1.15.bb
+++ b/recipes-kernel/linux/linux-wandboard_4.1.15.bb
@@ -15,6 +15,7 @@ LOCALVERSION = "-1.1.0-ga-wandboard"
 SRC_URI += "\
     file://Fix-the-compile-issue-under-gcc6.patch \
     file://Fix-gcc6-build-error-in-Vivante-driver.patch \
+    file://0001-fix-build-for-gcc7.patch \
 "
 
 COMPATIBLE_MACHINE = "(wandboard)"
-- 
2.13.0