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/**
* $Id$
*
* @brief Source control functions
*
* @copyright 2013 The FreeRADIUS server project
*/
#ifndef _BUILD_H
#define _BUILD_H
#ifdef __cplusplus
extern "C" {
#endif
#include <freeradius-devel/autoconf.h> /* Needed for endian macros */
/*
* The ubiquitous stringify macros
*/
#define XSTRINGIFY(x) #x
#define STRINGIFY(x) XSTRINGIFY(x)
#define JOINSTR(x,y) XSTRINGIFY(x ## y)
/*
* HEX concatenation macros
*/
#ifndef HEXIFY
# define XHEXIFY4(b1,b2,b3,b4) (0x ## b1 ## b2 ## b3 ## b4)
# define HEXIFY4(b1,b2,b3,b4) XHEXIFY4(b1, b2, b3, b4)
# define XHEXIFY3(b1,b2,b3) (0x ## b1 ## b2 ## b3)
# define HEXIFY3(b1,b2,b3) XHEXIFY3(b1, b2, b3)
# define XHEXIFY2(b1,b2) (0x ## b1 ## b2)
# define HEXIFY2(b1,b2) XHEXIFY2(b1, b2)
# define XHEXIFY(b1) (0x ## b1)
# define HEXIFY(b1) XHEXIFY(b1)
#endif
/*
* struct field size
*/
#define SIZEOF_MEMBER(_t, _m) sizeof(((_t *)0)->_m)
/*
* Only use GCC __attribute__ if were building with a GCClike
* compiler.
*/
#ifdef __GNUC__
# define CC_HINT(...) __attribute__ ((__VA_ARGS__))
# define likely(_x) __builtin_expect((_x), 1)
# define unlikely(_x) __builtin_expect((_x), 0)
#else
# define CC_HINT(...)
# define likely(_x) _x
# define unlikely(_x) _x
#endif
#ifdef HAVE_ATTRIBUTE_BOUNDED
# define CC_BOUNDED(_x, ...) CC_HINT(__bounded__(_x, ## __VA_ARGS__))
#else
# define CC_BOUNDED(...)
#endif
/*
* GCC uses __SANITIZE_ADDRESS__, clang uses __has_feature, which
* GCC complains about.
*/
#ifndef __SANITIZE_ADDRESS__
#ifdef __has_feature
#if __has_feature(address_sanitizer)
#define __SANITIZE_ADDRESS__ (1)
#endif
#endif
#endif
/*
* Macros to add pragmas
*/
#define PRAGMA(_x) _Pragma(#_x)
/*
* Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8
*/
#if defined(__GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
# define DIAG_PRAGMA(_x) PRAGMA(GCC diagnostic _x)
# if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406
# define DIAG_OFF(_x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored JOINSTR(-W,_x))
# define DIAG_ON(_x) DIAG_PRAGMA(pop)
# else
# define DIAG_OFF(_x) DIAG_PRAGMA(ignored JOINSTR(-W,_x))
# define DIAG_ON(_x) DIAG_PRAGMA(warning JOINSTR(-W,_x))
# endif
#elif defined(__clang__) && ((__clang_major__ * 100) + __clang_minor__ >= 208)
# define DIAG_PRAGMA(_x) PRAGMA(clang diagnostic _x)
# define DIAG_OFF(_x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored JOINSTR(-W,_x))
# define DIAG_ON(_x) DIAG_PRAGMA(pop)
#else
# define DIAG_OFF(_x)
# define DIAG_ON(_x)
#endif
/*
* GCC and clang use different macros
*/
#ifdef __clang__
# define DIAG_OPTIONAL DIAG_OFF(unknown-pragmas)
#else
# define DIAG_OPTIONAL DIAG_OFF(pragmas)
#endif
/*
* For dealing with APIs which are only deprecated in OSX (like the OpenSSL API)
*/
#ifdef __APPLE__
# define USES_APPLE_DEPRECATED_API DIAG_OFF(deprecated-declarations)
# define USES_APPLE_RST DIAG_ON(deprecated-declarations)
#else
# define USES_APPLE_DEPRECATED_API
# define USES_APPLE_RST
#endif
#if defined(__GNUC__)
/* force inclusion of ident keywords in the face of optimization */
# define RCSID(id) static char const rcsid[] __attribute__ ((used)) = id;
# define RCSIDH(h, id) static char const rcsid_ ## h [] __attribute__ ((used)) = id;
#elif defined(__SUNPRO_C)
/* put ident keyword into comment section (nicer than gcc way) */
# define RCSID(id) PRAGMA(sun ident id)
# define RCSIDH(h, id) PRAGMA(sun ident id)
#else
# define RCSID(id)
# define RCSIDH(h, id)
#endif
/*
* Try and determine endianness of the target system.
*
* Other projects seem to use endian.h and variants, but these are
* in non standard locations, and may mess up cross compiling.
*
* Here at least the endianness can be set explicitly with
* -DLITTLE_ENDIAN or -DBIG_ENDIAN.
*/
#if !defined(FR_LITTLE_ENDIAN) && !defined(FR_BIG_ENDIAN)
# if defined(__LITTLE_ENDIAN__) || \
(defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
# define FR_LITTLE_ENDIAN 1
# elif defined(__BIG_ENDIAN__) || \
(defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
# define FR_BIG_ENDIAN 1
# else
# error Failed determining endianness of system
# endif
#endif
#define PRINTF_LIKE(n) CC_HINT(format(printf, n, n+1))
#define NEVER_RETURNS CC_HINT(noreturn)
#define UNUSED CC_HINT(unused)
#define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */
#ifdef __cplusplus
}
#endif
#endif /* _BUILD_H */
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