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multilib_header_wrapper.h: Use #pragma once

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Avoid infinite include loops, especially with bits/wordsize.h which is
now possible with the synthesized headers since we now also synthesize
bits/wordsize.h itelf for some arches e.g. arm/aarch64

In cases where extra preprocessing tools are used such as clang-tidy
e.g. and these tools are not passed the knowledge about architecture
then case comes where we enter into header include loop for
bits/wordsize.h, since this template does explicitly include
bits/wordsize.h

To fix this emits the pragma once at beginning of file, this is better
solution than include guards, and pragma once is practically supported
on all compilers except few e.g. cray c/c++ compiler

(From OE-Core rev: 6ab11ac25bb987642d5ca1a07f4bd5f30c66c9c5)

(From OE-Core rev: 8f00480fe826ebaff2b78796d757b9e2734f2deb)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj 2019-02-04 16:36:26 -08:00 committed by Richard Purdie
parent 6ea2afed93
commit e9d1be84be
1 changed files with 1 additions and 0 deletions
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scripts/multilib_header_wrapper.h
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@ -21,6 +21,7 @@
*
*/
#pragma once
#if defined (__bpf__)
#define __MHWORDSIZE 64