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Ensure use of gcc's version of stdatomic.h in gthr-vxworks 

VxWorks provides its own version of the standard stdatomic.h, possibly
relying on non-gcc builtins, and our implementation of the gthr API resorts
to VxWorks specific functions for atomicity features.

When compiling libgcc (with gcc), make sure gcc's version of stdatomic.h
is used: #include it here, first, then define the macro used to guard the
system version so it doesn't get expanded when included indirectly by
other system headers.

2025-10-20  Olivier Hainque  <hainque@adacore.com>
	    Ashley Gay  <gay@adacore.com>

libgcc/
	* config/gthr-vxworks.h: Include stdatomic.h and prevent indirect
	inclusion of contents from the system version of that header.
This commit is contained in:
Ashley Gay 2024-03-08 11:30:35 +00:00 committed by Olivier Hainque
parent 4514439dac
commit ce46ebb26b
1 changed files with 13 additions and 0 deletions
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libgcc/config/gthr-vxworks.h
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@ -34,6 +34,19 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#else
/* VxWorks provides its own version of the standard stdatomic.h, possibly
relying on non-gcc builtins, and our implementation of the gthr API resorts
to VxWorks specific functions for atomicity features.
When compiling libgcc (with gcc), make sure gcc's version of stdatomic.h
is used: #include it here, first, then define the macro used to guard the
system version so it doesn't get expanded when included indirectly by
other system headers. */
#if defined(IN_LIBGCC2)
#include <../include/stdatomic.h>
#define __INCstdatomich
#endif
#include <vxWorks.h>
#include <_vxworks-versions.h>