#ifndef _NESTED_H_7fb8c651_
#define _NESTED_H_7fb8c651_

/* This file is in the public domain. */

/*
 * Include file defining NESTED, for use with nested functions.  This
 *  needs attention because with some versions of gcc, the only way to
 *  make a nested function work without a warning in the presence of
 *  -Wstrict-prototypes is to declare it static.  But gcc 4.0 doesn't
 *  like this; it wants them defined without any such modifier, or with
 *  auto for forward (or attribute-tagged) declarations.
 *
 * So we use NESTED in the code, and define it here, with overrides
 *  available for use in the Makefile if necessary.  With no overrides,
 *  we define NESTED as static or auto, depending on whether __GNUC__
 *  is 4 or higher (auto) or not (static).  When overridden, you can
 *  get NESTED to expand to whatever you want, including nothing.  We
 *  also define a NESTEDFWD, for forward, or attribute-tagged, nested
 *  declarations, and a NESTEDDEF for the corresponding definition;
 *  they always expand to auto by default, but are here against
 *  possible future need (and permit overriding too).
 *
 * I'm not sure whether gcc 4 and higher object to auto declarations
 *  with -Wstrict-prototypes; my informant did not say.  Please let me
 *  know if you have trouble with this.
 *
 * To override one of the above, just arrange to have it defined when
 *  compiling; eg, -DNESTED=auto will force NESTED to expand to auto,
 *  or -DNESTEDDEF= will make NESTEDDEF expand to nothing.
 */

#ifndef NESTED
#if __GNUC__ >= 4
#define NESTED auto
#else
#define NESTED static
#endif
#endif

#ifndef NESTEDFWD
#define NESTEDFWD auto
#endif

#ifndef NESTEDDEF
#define NESTEDDEF auto
#endif

#endif