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linux-libc-headers: Include linux/stddef.h in linux/swab.h

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This helps compiling bpf tests using non-glibc C libraries e.g. musl

(From OE-Core rev: 5f1895fb94d35a1496f22863791ad6f7a6aca97a)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj
2018-09-12 18:05:30 -07:00
committed by Richard Purdie
parent 069829248b
commit a906da83f4
2 changed files with 45 additions and 0 deletions
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44
meta/recipes-kernel/linux-libc-headers/linux-libc-headers/0001-include-linux-stddef.h-in-swab.h-uapi-header.patch Normal file
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@@ -0,0 +1,44 @@
From 9708dc74d9f49488d669e070982f6224a888d61a Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Wed, 12 Sep 2018 17:08:58 -0700
Subject: [PATCH] include linux/stddef.h in swab.h uapi header
swab.h uses __always_inline without including the header where it is
defined, this is exposed by musl based distributions where this macro is
not defined by system C library headers unlike glibc where it is defined
in sys/cdefs.h and that header gets pulled in indirectly via
features.h -> sys/cdefs.h
and features.h gets pulled in a lot of headers. Therefore it may work in
cases where features.h is includes but not otherwise.
Adding linux/stddef.h here ensures that __always_inline is always
defined independent of which C library is used in userspace
Upstream-Status: Submitted [https://lkml.org/lkml/2018/9/13/78]
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
include/uapi/linux/swab.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
index 23cd84868cc3..acddbe50a20d 100644
--- a/include/uapi/linux/swab.h
+++ b/include/uapi/linux/swab.h
@@ -3,6 +3,7 @@
#define _UAPI_LINUX_SWAB_H
#include <linux/types.h>
+#include <linux/stddef.h>
#include <linux/compiler.h>
#include <asm/swab.h>
--
2.19.0

1
meta/recipes-kernel/linux-libc-headers/linux-libc-headers_4.18.bb
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@@ -6,6 +6,7 @@ SRC_URI_append_libc-musl = "\
file://0003-remove-inclusion-of-sysinfo.h-in-kernel.h.patch \
file://0001-libc-compat.h-musl-_does_-define-IFF_LOWER_UP-DORMAN.patch \
file://0001-if_ether-move-muslc-ethhdr-protection-to-uapi-file.patch \
file://0001-include-linux-stddef.h-in-swab.h-uapi-header.patch \
"
SRC_URI[md5sum] = "bee5fe53ee1c3142b8f0c12c0d3348f9"