Use FreeRADIUS's warning pragma controls to suppress Apple complaints.

Apple would really rather that you use their Shiny Happy Frameworks
rather than those crufty old cross-platform APIs.  We are a
cross-platform program, and will use platform-specific APIs only if
there's enough benefit to doing so - and, in this case, that means
"using the platform-specific APIs on OS X and the other APIs on other
platforms", so that's two code paths to maintain, so "enough benefit"
has to outweigh the issues with that.

Change-Id: I370ba469a6f5892143d72179d15c9fe22d664fdf
Reviewed-on: https://code.wireshark.org/review/3881
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 96 insertions, 0 deletions

diff --git a/wsutil/ws_diag_control.h b/wsutil/ws_diag_control.h
new file mode 100644
index 0000000000..375ab85171
--- /dev/null
+++ b/wsutil/ws_diag_control.h
@@ -0,0 +1,96 @@
+/* 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__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
+   /* gcc version is >= 4.2.0; we can use "GCC diagnostic ignored/warning
+      -Wxxx" */
+#  define DIAG_PRAGMA(x) DIAG_DO_PRAGMA(GCC diagnostic x)
+#  if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406
+     /* gcc version is >= 4.6.0: we can use "GCC diagnostic push/pop" */
+#    define DIAG_OFF(x) DIAG_PRAGMA(push) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
+#    define DIAG_ON(x) DIAG_PRAGMA(pop)
+#  else
+     /* gcc version is between 4.2.0 and 4.6.0:
+        we can use "GCC diagnostic ignored/warning -Wxxx", but not
+        "GCC diagnostic push/pop" */
+#    define DIAG_OFF(x) DIAG_PRAGMA(ignored DIAG_JOINSTR(-W,x))
+#    define DIAG_ON(x)  DIAG_PRAGMA(warning DIAG_JOINSTR(-W,x))
+#  endif
+#elif defined(__clang__) && ((__clang_major__ * 100) + __clang_minor__ >= 208)
+   /* 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)
+#else
+   /* 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__ */