[server] Implement a few CPlugins member functions

server/plugincommon.h

@@ -4,6 +4,49 @@
 
 //----------------------------------------------------------
 
+#define SAMP_PLUGIN_VERSION 0x0220
+
+//----------------------------------------------------------
+
+#ifdef __cplusplus
+  #define PLUGIN_EXTERN_C extern "C"
+#else
+  #define PLUGIN_EXTERN_C
+#endif
+
+#if defined(LINUX) || defined(FREEBSD) || defined(__FreeBSD__) || defined(__OpenBSD__)
+  #ifndef __GNUC__
+    #pragma message "Warning: Not using a GNU compiler."
+  #endif
+  #define PLUGIN_CALL
+  #ifndef SAMPSVR
+    // Compile code with -fvisibility=hidden to hide non-exported functions.
+    #define PLUGIN_EXPORT PLUGIN_EXTERN_C __attribute__((visibility("default")))
+  #else
+    #define PLUGIN_EXPORT PLUGIN_EXTERN_C
+  #endif
+#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
+  #ifndef _MSC_VER
+    #pragma message "Warning: Not using a VC++ compiler."
+  #endif
+  #define PLUGIN_CALL __stdcall
+  #define PLUGIN_EXPORT PLUGIN_EXTERN_C
+#else
+  #error "You must define one of WIN32, LINUX or FREEBSD"
+#endif
+
+//----------------------------------------------------------
+
+enum SUPPORTS_FLAGS
+{
+	SUPPORTS_VERSION		= SAMP_PLUGIN_VERSION,
+	SUPPORTS_VERSION_MASK	= 0xffff,
+	SUPPORTS_AMX_NATIVES	= 0x10000,
+	SUPPORTS_PROCESS_TICK	= 0x20000,
+};
+
+//----------------------------------------------------------
+
 enum PLUGIN_DATA_TYPE
 {
 	// For some debugging
@@ -65,4 +108,9 @@ enum PLUGIN_AMX_EXPORT
 	PLUGIN_AMX_EXPORT_UTF8Put		= 43,
 };
 
+//----------------------------------------------------------
+
 #endif // _PLUGINCOMMON_H_INCLUDED
+
+//----------------------------------------------------------
+// EOF