[oe-commits] [openembedded-core] 01/15: multilib_header_wrapper.h: Use #pragma once

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rpurdie pushed a commit to branch master-next
in repository openembedded-core.

commit 6ab11ac25bb987642d5ca1a07f4bd5f30c66c9c5
Author: Khem Raj <raj.khem at gmail.com>
AuthorDate: Mon Feb 4 16:36:26 2019 -0800

    multilib_header_wrapper.h: Use #pragma once
    
    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
    
    Signed-off-by: Khem Raj <raj.khem at gmail.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 scripts/multilib_header_wrapper.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/multilib_header_wrapper.h b/scripts/multilib_header_wrapper.h
index 9660225..4824790 100644
--- a/scripts/multilib_header_wrapper.h
+++ b/scripts/multilib_header_wrapper.h
@@ -21,6 +21,7 @@
  * 
  */
 
+#pragma once
 
 #if defined (__bpf__)
 #define __MHWORDSIZE			64

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