Re: [PATCH v5 1/2] lib: add crc64 calculation routines

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On Thu, Jul 26 2018, Andrew Morton wrote:

> On Thu, 26 Jul 2018 13:33:51 +0800 Coly Li <colyli@xxxxxxx> wrote:
>
>> This patch adds the re-write crc64 calculation routines for Linux kernel.
>> The CRC64 polynomial arithmetic follows ECMA-182 specification, inspired
>> by CRC paper of Dr. Ross N. Williams
>> (see http://www.ross.net/crc/download/crc_v3.txt) and other public domain
>> implementations.

Hi Coly and Andrew,

This patch breaks compilation if linux headers files are not installed
(reported at https://github.com/gnubee-git/GnuBee_Docs/issues/75).
Following fixes it.

Thanks,
NeilBrown

From: NeilBrown <neil@xxxxxxxxxx>
Subject: [PATCH] lib: don't depend on linux headers being installed.

gen_crc64table requires linux include files to be installed
in /usr/include/linux.  This is a new requrement so hosts that
could previously build the kernel, now cannot.

gen_crc64table makes this requirement by including <linux/swab.h>,
but nothing from that header is actaully used.

So remove the #include, so that the linux headers no longer
need to be installed.

Fixes: feba04fd2cf8 ("lib: add crc64 calculation routines")
Signed-off-by: NeilBrown <neil@xxxxxxxxxx>
---
 lib/gen_crc64table.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/lib/gen_crc64table.c b/lib/gen_crc64table.c
index 9011926e4162..094b43aef8db 100644
--- a/lib/gen_crc64table.c
+++ b/lib/gen_crc64table.c
@@ -16,8 +16,6 @@
 #include <inttypes.h>
 #include <stdio.h>
 
-#include <linux/swab.h>
-
 #define CRC64_ECMA182_POLY 0x42F0E1EBA9EA3693ULL
 
 static uint64_t crc64_table[256] = {0};
-- 
2.14.0.rc0.dirty

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