Default definitions of C compiler quirk work-arounds. More...

#include "contiki.h"
#include "sys/cc-gcc.h"

Macros
#define	CC_NORETURN
	Configure if the C compiler supports functions that are not meant to return e.g. More...

#define	CC_DEPRECATED(msg)
	Configure if the C compiler supports marking functions as deprecated e.g. More...

#define	CC_ACCESS_NOW(type, variable) ((volatile type )&(variable))
	This macro ensures that the access to a non-volatile variable can not be reordered or optimized by the compiler. More...

#define	CC_CONCAT(s1, s2) CC_CONCAT2(s1, s2)
	A C preprocessing macro for concatenating two preprocessor tokens. More...

#define	CC_CONCAT3(s1, s2, s3) s1##s2##s3
	A C preprocessing macro for concatenating three preprocessor tokens.

Detailed Description

Default definitions of C compiler quirk work-arounds.

Author: Adam Dunkels adam@.nosp@m.dunk.nosp@m.els.c.nosp@m.om

This file is used for making use of extra functionality of some C compilers used for Contiki, and defining work-arounds for various quirks and problems with some other C compilers.

Definition in file cc.h.

Macro Definition Documentation

◆ CC_ACCESS_NOW

#define CC_ACCESS_NOW	(	type,
		variable
	)	((volatile type )&(variable))

This macro ensures that the access to a non-volatile variable can not be reordered or optimized by the compiler.

See also https://lwn.net/Articles/508991/ - In Linux the macro is called ACCESS_ONCE The type must be passed, because the typeof-operator is a gcc extension

Definition at line 94 of file cc.h.

◆ CC_CONCAT

#define CC_CONCAT	(	s1,
		s2
	)	CC_CONCAT2(s1, s2)

A C preprocessing macro for concatenating two preprocessor tokens.

We need use two macros (CC_CONCAT and CC_CONCAT2) in order to allow concatenation of two #defined macros.

Definition at line 124 of file cc.h.

◆ CC_DEPRECATED

#define CC_DEPRECATED ( msg )

Configure if the C compiler supports marking functions as deprecated e.g.

with attribute((deprecated))

Definition at line 78 of file cc.h.

◆ CC_NORETURN

#define CC_NORETURN

Configure if the C compiler supports functions that are not meant to return e.g.

with attribute((noreturn))