forked from auracaster/openocd
561f27fde9
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
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* This file contains compiler specific workarounds to handle different
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* compilers and different compiler versions.
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* Inspired by Linux's include/linux/compiler_attributes.h
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* and file sys/cdefs.h in libc and newlib.
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*/
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#ifndef OPENOCD_HELPER_COMPILER_H
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#define OPENOCD_HELPER_COMPILER_H
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/*
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* __has_attribute is supported on gcc >= 5, clang >= 2.9 and icc >= 17.
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*/
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#ifndef __has_attribute
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# define __has_attribute(x) 0
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#endif
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/*
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* The __returns_nonnull function attribute marks the return type of the function
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* as always being non-null.
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*/
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#ifndef __returns_nonnull
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# if __has_attribute(__returns_nonnull__)
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# define __returns_nonnull __attribute__((__returns_nonnull__))
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# else
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# define __returns_nonnull
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# endif
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#endif
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/*
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* The __nonnull function attribute marks pointer parameters that
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* must not be NULL.
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*
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* clang for Apple defines
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* #define __nonnull _Nonnull
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* that is a per argument attribute, incompatible with the gcc per function attribute __nonnull__.
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* gcc for Apple includes sys/cdefs.h from MacOSX.sdk that defines
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* #define __nonnull
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* In both cases, undefine __nonnull to keep compatibility among compilers and platforms.
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*/
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#if defined(__APPLE__)
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# undef __nonnull
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#endif
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#ifndef __nonnull
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# if __has_attribute(__nonnull__)
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# define __nonnull(params) __attribute__ ((__nonnull__ params))
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# else
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# define __nonnull(params)
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# endif
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#endif
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#endif /* OPENOCD_HELPER_COMPILER_H */
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