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helper/compiler fix build with gcc on MacOS 

On MacOS libc includes files from MacOSX.sdk that define the macro
	#define __nonnull
without arguments, causing compile error.

Extend the existing check for clang on MacOS and undefine the
macro for gcc too.

Change-Id: Ic99de78348c6aa86561212a3aded9342e5d32e02
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reported-by: Erhan Kurubas <erhan.kurubas@espressif.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7571
Reviewed-by: Erhan Kurubas <erhan.kurubas@espressif.com>
Tested-by: jenkins
This commit is contained in:
Antonio Borneo 2023-04-02 14:24:23 +02:00
parent 7e0797d19a
commit 561f27fde9
1 changed files with 4 additions and 2 deletions
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6
src/helper/compiler.h
View File

@ -36,9 +36,11 @@
* clang for Apple defines
* #define __nonnull _Nonnull
* that is a per argument attribute, incompatible with the gcc per function attribute __nonnull__.
* Undefine it to keep compatibility among compilers.
* gcc for Apple includes sys/cdefs.h from MacOSX.sdk that defines
* #define __nonnull
* In both cases, undefine __nonnull to keep compatibility among compilers and platforms.
*/
#if defined(__clang__) && defined(__APPLE__)
#if defined(__APPLE__)
# undef __nonnull
#endif
#ifndef __nonnull