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Diffstat (limited to 'ws_diag_control.h')
-rw-r--r-- | ws_diag_control.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/ws_diag_control.h b/ws_diag_control.h new file mode 100644 index 0000000000..cc0e9eec25 --- /dev/null +++ b/ws_diag_control.h @@ -0,0 +1,107 @@ +/* ws_diag_control.h + * Turn compiler diagnostic messages on and off. + * + * From FreeRADIUS build.h. + * + * @copyright 2013 The FreeRADIUS server project + * + * That project is covered by the GPLv2, so: + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ +#ifndef __WS_DIAG_CONTROL_H__ +#define __WS_DIAG_CONTROL_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#define XSTRINGIFY(x) #x + +/* + * Macros for controlling warnings in GCC >= 4.2 and clang >= 2.8 + */ +#define DIAG_JOINSTR(x,y) XSTRINGIFY(x ## y) +#define DIAG_DO_PRAGMA(x) _Pragma (#x) + +/* check the gcc or clang version + + pragma GCC diagnostic error/warning/ignored -Wxxx was introduced + in gcc 4.2.0 + pragma GCC diagnostic push/pop was introduced in gcc 4.6.0 + + pragma clang diagnostic error/warning/ignored -Wxxx and + pragma clang diagnostic push/pop were introduced in clang 2.8 */ + +#if defined(__GNUC__) && !defined(__clang__) +# define gcc_version ((__GNUC__ * 1000) + (__GNUC_MINOR__ * 10)) +# if gcc_version >= 4080 + /* + * gcc version is >= 4.8.0. We can use "GCC diagnostic push/pop" *and* + * gcc supports "-Wpedantic". + */ +# define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x) + /* + * DIAG_OFF generates + * + * #pragma GCC diagnostic push + * #pragma GCC diagnostic ignored "-Wpragmas" + * #pragma GCC diagnostic ignored "-Wx-aka-the-warning-in-question" + * + * Ignoring "-Wpragmas" lets us turn off diagnostics for clang warnings + * that might not be recognized by gcc. + */ +# define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,pragmas)) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x)) +# define DIAG_ON(x) DIAG_PRAGMA(pop) +# endif +#elif defined(__clang__) +# define clang_version ((__clang_major__ * 1000) + (__clang_minor__ * 10)) +# if clang_version >= 2080 + /* clang version is >= 2.8: we can use "clang diagnostic ignored -Wxxx" + and "clang diagnostic push/pop" */ +# define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(clang diagnostic x) +# define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x)) +# define DIAG_ON(x) DIAG_PRAGMA(pop) +# endif +#endif + +#ifndef DIAG_OFF + /* no gcc or clang, or gcc version < 4.2.0, or clang version < 2.8: + we can't do anything */ +# define DIAG_OFF(x) +# define DIAG_ON(x) +#endif + +/* + * For dealing with APIs which are only deprecated in OS X (like the + * OpenSSL and MIT/Heimdal Kerberos APIs). + * + * Dear Apple: this is a cross-platform program, and we're not + * going to use your Shiny New Frameworks on OS X unless there's + * a sufficiently clear benefit to make it worth our while to have + * both OS X and non-OS X versions of the code. + */ +#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 + +#ifdef __cplusplus +} +#endif +#endif /* __WS_DIAG_CONTROL_H__ */ |