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Diffstat (limited to 'src/include/build.h')
| -rw-r--r-- | src/include/build.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/include/build.h b/src/include/build.h new file mode 100644 index 0000000..c5eaa45 --- /dev/null +++ b/src/include/build.h @@ -0,0 +1,168 @@ +/** + * $Id$ + * + * @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_UNKNOWN_PRAGMAS pragmas +# 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_UNKNOWN_PRAGMAS unknown-pragmas +# 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_UNKNOWN_PRAGMAS +# 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 HIDDEN CC_HINT(visibility("hidden")) +#define UNUSED CC_HINT(unused) +#define BLANK_FORMAT " " /* GCC_LINT whines about empty formats */ + +#ifdef __cplusplus +} +#endif +#endif /* _BUILD_H */ |