linux-kernel - [PATCH] Documentation: support glibc versions without htole macros

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Date:	Wed, 10 Sep 2014 14:31:01 -0400
From:	Peter Foley <pefoley2@...oley.com>
To:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	rdunlap@...radead.org
Cc:	linux-doc@...r.kernel.org, Peter Foley <pefoley2@...oley.com>
Subject: [PATCH] Documentation: support glibc versions without htole macros

glibc 2.9 introduced the htole<16/32/64> macros, add them to
tools/include to support older versions of glibc.

Reported-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Peter Foley <pefoley2@...oley.com>
---
 Documentation/arm/SH-Mobile/Makefile |  2 +-
 Documentation/arm/SH-Mobile/vrl4.c   |  1 +
 Documentation/mic/mpssd/Makefile     |  2 +-
 Documentation/mic/mpssd/mpssd.c      |  1 +
 tools/include/tools/endian.h         | 32 ++++++++++++++++++++++++++++++++
 5 files changed, 36 insertions(+), 2 deletions(-)
 create mode 100644 tools/include/tools/endian.h

diff --git a/Documentation/arm/SH-Mobile/Makefile b/Documentation/arm/SH-Mobile/Makefile
index ac8075d..bca8a7e 100644
--- a/Documentation/arm/SH-Mobile/Makefile
+++ b/Documentation/arm/SH-Mobile/Makefile
@@ -4,4 +4,4 @@ hostprogs-y := vrl4
 # Tell kbuild to always build the programs
 always := $(hostprogs-y)
 
-HOSTCFLAGS_vrl4.o += -I$(objtree)/usr/include
+HOSTCFLAGS_vrl4.o += -I$(objtree)/usr/include -I$(srctree)/tools/include
diff --git a/Documentation/arm/SH-Mobile/vrl4.c b/Documentation/arm/SH-Mobile/vrl4.c
index 4cbbba5..f4cd8ad 100644
--- a/Documentation/arm/SH-Mobile/vrl4.c
+++ b/Documentation/arm/SH-Mobile/vrl4.c
@@ -34,6 +34,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <errno.h>
+#include <tools/endian.h>
 
 struct hdr {
 	uint32_t magic1;
diff --git a/Documentation/mic/mpssd/Makefile b/Documentation/mic/mpssd/Makefile
index aaa89d1..505d84f 100644
--- a/Documentation/mic/mpssd/Makefile
+++ b/Documentation/mic/mpssd/Makefile
@@ -6,7 +6,7 @@ mpssd-objs := mpssd.o sysfs.o
 # Tell kbuild to always build the programs
 always := $(hostprogs-y)
 
-HOSTCFLAGS_mpssd.o += -I$(objtree)/usr/include
+HOSTCFLAGS_mpssd.o += -I$(objtree)/usr/include -I$(srctree)/tools/include
 
 ifdef DEBUG
 HOSTCFLAGS += -DDEBUG=$(DEBUG)
diff --git a/Documentation/mic/mpssd/mpssd.c b/Documentation/mic/mpssd/mpssd.c
index 24203dd..3c5c379 100644
--- a/Documentation/mic/mpssd/mpssd.c
+++ b/Documentation/mic/mpssd/mpssd.c
@@ -41,6 +41,7 @@
 #include "mpssd.h"
 #include <linux/mic_ioctl.h>
 #include <linux/mic_common.h>
+#include <tools/endian.h>
 
 static void init_mic(struct mic_info *mic);
 
diff --git a/tools/include/tools/endian.h b/tools/include/tools/endian.h
new file mode 100644
index 0000000..5d42e20
--- /dev/null
+++ b/tools/include/tools/endian.h
@@ -0,0 +1,32 @@
+#ifndef _TOOLS_ENDIAN_H
+#define _TOOLS_ENDIAN_H
+
+#include <byteswap.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+
+#ifndef htole16
+#define htole16(x) (x)
+#endif
+#ifndef htole32
+#define htole32(x) (x)
+#endif
+#ifndef htole64
+#define htole64(x) (x)
+#endif
+
+#else /* __BYTE_ORDER */
+
+#ifndef htole16
+#define htole16(x) __bswap_16(x)
+#endif
+#ifndef htole32
+#define htole32(x) __bswap_32(x)
+#endif
+#ifndef htole64
+#define htole64(x) __bswap_64(x)
+#endif
+
+#endif
+
+#endif /* _TOOLS_ENDIAN_H */
-- 
2.1.0

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