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/* Provide support for both ANSI and non-ANSI environments. */
/* Some ANSI environments are "broken" in the sense that __STDC__ cannot be
relied upon to have it's intended meaning. Therefore we must use our own
concoction: _HAVE_STDC. Always use _HAVE_STDC instead of __STDC__ in newlib
sources!
To get a strict ANSI C environment, define macro __STRICT_ANSI__. This will
"comment out" the non-ANSI parts of the ANSI header files (non-ANSI header
files aren't affected). */
#ifndef _ANSIDECL_H_
#define _ANSIDECL_H_
#include <newlib.h>
#include <sys/config.h>
/* First try to figure out whether we really are in an ANSI C environment. */
/* FIXME: This probably needs some work. Perhaps sys/config.h can be
prevailed upon to give us a clue. */
#ifdef __STDC__
#define _HAVE_STDC
#endif
#ifdef _HAVE_STDC
#define _PTR void *
#define _AND ,
#define _NOARGS void
#define _CONST const
#define _VOLATILE volatile
#define _SIGNED signed
#define _DOTS , ...
#define _VOID void
#ifdef __CYGWIN__
#define _EXFUN(name, proto) __cdecl name proto
#define _EXPARM(name, proto) (* __cdecl name) proto
#else
#define _EXFUN(name, proto) name proto
#define _EXPARM(name, proto) (* name) proto
#endif
#define _DEFUN(name, arglist, args) name(args)
#define _DEFUN_VOID(name) name(_NOARGS)
#define _CAST_VOID (void)
#ifndef _LONG_DOUBLE
#define _LONG_DOUBLE long double
#endif
#ifndef _PARAMS
#define _PARAMS(paramlist) paramlist
#endif
#else
#define _PTR char *
#define _AND ;
#define _NOARGS
#define _CONST
#define _VOLATILE
#define _SIGNED
#define _DOTS
#define _VOID void
#define _EXFUN(name, proto) name()
#define _DEFUN(name, arglist, args) name arglist args;
#define _DEFUN_VOID(name) name()
#define _CAST_VOID
#define _LONG_DOUBLE double
#ifndef _PARAMS
#define _PARAMS(paramlist) ()
#endif
#endif
/* Support gcc's __attribute__ facility. */
#ifdef __GNUC__
#define _ATTRIBUTE(attrs) __attribute__ (attrs)
#else
#define _ATTRIBUTE(attrs)
#endif
/* ISO C++. */
#ifdef __cplusplus
#if !(defined(_BEGIN_STD_C) && defined(_END_STD_C))
#ifdef _HAVE_STD_CXX
#define _BEGIN_STD_C namespace std { extern "C" {
#define _END_STD_C } }
#else
#define _BEGIN_STD_C extern "C" {
#define _END_STD_C }
#endif
#endif
#else
#define _BEGIN_STD_C
#define _END_STD_C
#endif
#endif /* _ANSIDECL_H_ */
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