diff --git a/dlls/ntdll/debugtools.c b/dlls/ntdll/debugtools.c
index fc222ab959210cfdbf056bd22659bc5f98ea89e0..5e59e16a8329174c9b556019c475f8b12a7f7704 100644
--- a/dlls/ntdll/debugtools.c
+++ b/dlls/ntdll/debugtools.c
@@ -296,17 +296,17 @@ int wine_dbg_printf(const char *format, ...)
 /***********************************************************************
  *		wine_dbg_log (NTDLL.@)
  */
-int wine_dbg_log(enum __DEBUG_CLASS cls, const char *channel,
+int wine_dbg_log(enum __WINE_DEBUG_CLASS cls, const char *channel,
                  const char *function, const char *format, ... )
 {
-    static const char *classes[__DBCL_COUNT] = { "fixme", "err", "warn", "trace" };
+    static const char *classes[__WINE_DBCL_COUNT] = { "fixme", "err", "warn", "trace" };
     va_list valist;
     int ret = 0;
 
     va_start(valist, format);
     if (TRACE_ON(tid))
         ret = wine_dbg_printf( "%08lx:", (DWORD)NtCurrentTeb()->tid );
-    if (cls < __DBCL_COUNT)
+    if (cls < __WINE_DBCL_COUNT)
         ret += wine_dbg_printf( "%s:%s:%s ", classes[cls], channel + 1, function );
     if (format)
         ret += wine_dbg_vprintf( format, valist );
diff --git a/dlls/shell32/pidl.c b/dlls/shell32/pidl.c
index 374251405afb6de356b1b6e9ee3ceb2c0d95ce7e..871b457a5efcccab8cfae3ba14d8a78cc4c72c1d 100644
--- a/dlls/shell32/pidl.c
+++ b/dlls/shell32/pidl.c
@@ -37,8 +37,8 @@ void pdump (LPCITEMIDLIST pidl)
 
 	/* silence the sub-functions */
 	bIsShellDebug = TRACE_ON(shell);
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_shell, FALSE);
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_pidl, FALSE);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_shell, FALSE);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_pidl, FALSE);
 
 	if (! pidltemp)
 	{
@@ -78,8 +78,8 @@ void pdump (LPCITEMIDLIST pidl)
 	  pcheck(pidl);
 	}
 
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_shell, bIsShellDebug);
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_pidl, TRUE);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_shell, bIsShellDebug);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_pidl, TRUE);
 
 }
 #define BYTES_PRINTED 32
@@ -90,7 +90,7 @@ BOOL pcheck (LPCITEMIDLIST pidl)
         LPITEMIDLIST pidltemp = pidl;
 
 	bIsPidlDebug = TRACE_ON(shell);
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_pidl, FALSE);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_pidl, FALSE);
 
         if (pidltemp && pidltemp->mkid.cb)
         { do
@@ -137,7 +137,7 @@ BOOL pcheck (LPCITEMIDLIST pidl)
 	    pidltemp = ILGetNext(pidltemp);
 	  } while (pidltemp->mkid.cb);
 	}
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_pidl, bIsPidlDebug);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_pidl, bIsPidlDebug);
 	return ret;
 }
 
diff --git a/dlls/shell32/shellord.c b/dlls/shell32/shellord.c
index 56853cea6b043d22c419e7d941d27acfe85bd131..d9eb50084e85699e13f1553fb0e20be9ed1f29d6 100644
--- a/dlls/shell32/shellord.c
+++ b/dlls/shell32/shellord.c
@@ -1476,14 +1476,14 @@ HRESULT WINAPI CIDLData_CreateFromIDArray(
 	TRACE("(%p, %ld, %p, %p)\n", pidlFolder, cpidlFiles,
 	      lppidlFiles, ppdataObject);
 	boldpidl = TRACE_ON(pidl);
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_shell, FALSE);
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_pidl, TRUE);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_shell, FALSE);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_pidl, TRUE);
 	pdump (pidlFolder);
 	for (i=0; i<cpidlFiles; i++){
 	    pdump (lppidlFiles[i]);
 	}
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_shell, TRUE);
-	__SET_DEBUGGING(__DBCL_TRACE, __wine_dbch_pidl, boldpidl);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_shell, TRUE);
+	__WINE_SET_DEBUGGING(__WINE_DBCL_TRACE, __wine_dbch_pidl, boldpidl);
     }
     *ppdataObject = IDataObject_Constructor( hwnd, pidlFolder,
 					     lppidlFiles, cpidlFiles);
diff --git a/include/debugtools.h b/include/debugtools.h
index 7bfd78f2fb9c05a9817cf9656dbc8567822f5379..127da40195f9a4643ea2e73af36e35e20ba6acc9 100644
--- a/include/debugtools.h
+++ b/include/debugtools.h
@@ -2,63 +2,77 @@
 #ifndef __WINE_DEBUGTOOLS_H
 #define __WINE_DEBUGTOOLS_H
 
-#ifdef __WINE__  /* Debugging interface is internal to Wine */
 
 #include <stdarg.h>
 #include "windef.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct _GUID;
 
-/* Internal definitions (do not use these directly) */
+/*
+ * Internal definitions (do not use these directly)
+ */
 
-enum __DEBUG_CLASS { __DBCL_FIXME, __DBCL_ERR, __DBCL_WARN, __DBCL_TRACE, __DBCL_COUNT };
+enum __WINE_DEBUG_CLASS {
+    __WINE_DBCL_FIXME,
+    __WINE_DBCL_ERR,
+    __WINE_DBCL_WARN,
+    __WINE_DBCL_TRACE,
+    __WINE_DBCL_COUNT
+};
 
 #ifndef NO_TRACE_MSGS
-# define __GET_DEBUGGING_TRACE(dbch) ((dbch)[0] & (1 << __DBCL_TRACE))
+# define __WINE_GET_DEBUGGING_TRACE(dbch) ((dbch)[0] & (1 << __WINE_DBCL_TRACE))
 #else
-# define __GET_DEBUGGING_TRACE(dbch) 0
+# define __WINE_GET_DEBUGGING_TRACE(dbch) 0
 #endif
 
 #ifndef NO_DEBUG_MSGS
-# define __GET_DEBUGGING_WARN(dbch)  ((dbch)[0] & (1 << __DBCL_WARN))
-# define __GET_DEBUGGING_FIXME(dbch) ((dbch)[0] & (1 << __DBCL_FIXME))
+# define __WINE_GET_DEBUGGING_WARN(dbch)  ((dbch)[0] & (1 << __WINE_DBCL_WARN))
+# define __WINE_GET_DEBUGGING_FIXME(dbch) ((dbch)[0] & (1 << __WINE_DBCL_FIXME))
 #else
-# define __GET_DEBUGGING_WARN(dbch)  0
-# define __GET_DEBUGGING_FIXME(dbch) 0
+# define __WINE_GET_DEBUGGING_WARN(dbch)  0
+# define __WINE_GET_DEBUGGING_FIXME(dbch) 0
 #endif
 
 /* define error macro regardless of what is configured */
-#define __GET_DEBUGGING_ERR(dbch)  ((dbch)[0] & (1 << __DBCL_ERR))
+#define __WINE_GET_DEBUGGING_ERR(dbch)  ((dbch)[0] & (1 << __WINE_DBCL_ERR))
 
-#define __GET_DEBUGGING(dbcl,dbch)  __GET_DEBUGGING##dbcl(dbch)
-#define __SET_DEBUGGING(dbcl,dbch,on) \
+#define __WINE_GET_DEBUGGING(dbcl,dbch)  __WINE_GET_DEBUGGING##dbcl(dbch)
+#define __WINE_SET_DEBUGGING(dbcl,dbch,on) \
     ((on) ? ((dbch)[0] |= 1 << (dbcl)) : ((dbch)[0] &= ~(1 << (dbcl))))
 
 #ifdef __GNUC__
 
-#define __DPRINTF(dbcl,dbch) \
-  do { if(__GET_DEBUGGING(dbcl,(dbch))) { \
+#define __WINE_DPRINTF(dbcl,dbch) \
+  do { if(__WINE_GET_DEBUGGING(dbcl,(dbch))) { \
        const char * const __dbch = (dbch); \
-       const enum __DEBUG_CLASS __dbcl = __DBCL##dbcl; \
+       const enum __WINE_DEBUG_CLASS __dbcl = __WINE_DBCL##dbcl; \
        __WINE_DBG_LOG
 
 #define __WINE_DBG_LOG(args...) \
     wine_dbg_log( __dbcl, __dbch, __FUNCTION__, args); } } while(0)
 
-#define __PRINTF_ATTR(fmt,args) __attribute__((format (printf,fmt,args)))
+#define __WINE_PRINTF_ATTR(fmt,args) __attribute__((format (printf,fmt,args)))
 
 #else  /* __GNUC__ */
 
-#define __DPRINTF(dbcl,dbch) \
-    (!__GET_DEBUGGING(dbcl,(dbch)) || \
-     (wine_dbg_log(__DBCL##dbcl,(dbch),__FILE__,"%d: ",__LINE__),0)) ? \
+#define __WINE_DPRINTF(dbcl,dbch) \
+    (!__WINE_GET_DEBUGGING(dbcl,(dbch)) || \
+     (wine_dbg_log(__WINE_DBCL##dbcl,(dbch),__FILE__,"%d: ",__LINE__),0)) ? \
      (void)0 : (void)wine_dbg_printf
 
-#define __PRINTF_ATTR(fmt, args)
+#define __WINE_PRINTF_ATTR(fmt, args)
 
 #endif  /* __GNUC__ */
 
-/* Exported definitions and macros */
+
+/*
+ * Exported definitions and macros
+ */
 
 /* These function return a printable version of a string, including
    quotes.  The string will be valid for some time, but not indefinitely
@@ -67,10 +81,41 @@ extern const char *wine_dbgstr_an( const char * s, int n );
 extern const char *wine_dbgstr_wn( const WCHAR *s, int n );
 extern const char *wine_dbgstr_guid( const struct _GUID *id );
 
-extern int wine_dbg_vprintf( const char *format, va_list args ) __PRINTF_ATTR(1,0);
-extern int wine_dbg_printf( const char *format, ... ) __PRINTF_ATTR(1,2);
-extern int wine_dbg_log( enum __DEBUG_CLASS cls, const char *ch,
-                         const char *func, const char *format, ... ) __PRINTF_ATTR(4,5);
+extern int wine_dbg_vprintf( const char *format, va_list args ) __WINE_PRINTF_ATTR(1,0);
+extern int wine_dbg_printf( const char *format, ... ) __WINE_PRINTF_ATTR(1,2);
+extern int wine_dbg_log( enum __WINE_DEBUG_CLASS cls, const char *ch,
+                         const char *func, const char *format, ... ) __WINE_PRINTF_ATTR(4,5);
+
+inline static const char *wine_dbgstr_a( const char *s )  { return wine_dbgstr_an( s, 80 ); }
+inline static const char *wine_dbgstr_w( const WCHAR *s ) { return wine_dbgstr_wn( s, 80 ); }
+
+#define WINE_TRACE                 __WINE_DPRINTF(_TRACE,__wine_dbch___default)
+#define WINE_TRACE_(ch)            __WINE_DPRINTF(_TRACE,__wine_dbch_##ch)
+#define WINE_TRACE_ON(ch)          __WINE_GET_DEBUGGING(_TRACE,__wine_dbch_##ch)
+
+#define WINE_WARN                  __WINE_DPRINTF(_WARN,__wine_dbch___default)
+#define WINE_WARN_(ch)             __WINE_DPRINTF(_WARN,__wine_dbch_##ch)
+#define WINE_WARN_ON(ch)           __WINE_GET_DEBUGGING(_WARN,__wine_dbch_##ch)
+
+#define WINE_FIXME                 __WINE_DPRINTF(_FIXME,__wine_dbch___default)
+#define WINE_FIXME_(ch)            __WINE_DPRINTF(_FIXME,__wine_dbch_##ch)
+#define WINE_FIXME_ON(ch)          __WINE_GET_DEBUGGING(_FIXME,__wine_dbch_##ch)
+
+#define WINE_ERR                   __WINE_DPRINTF(_ERR,__wine_dbch___default)
+#define WINE_ERR_(ch)              __WINE_DPRINTF(_ERR,__wine_dbch_##ch)
+#define WINE_ERR_ON(ch)            __WINE_GET_DEBUGGING(_ERR,__wine_dbch_##ch)
+
+#define WINE_DECLARE_DEBUG_CHANNEL(ch) \
+    extern char __wine_dbch_##ch[]
+#define WINE_DEFAULT_DEBUG_CHANNEL(ch) \
+    extern char __wine_dbch_##ch[]; \
+    static char * const __wine_dbch___default = __wine_dbch_##ch
+
+#define WINE_DPRINTF               wine_dbg_printf
+#define WINE_MESSAGE               wine_dbg_printf
+
+#ifdef __WINE__
+/* Wine uses shorter names that are very likely to conflict with other software */
 
 inline static const char *debugstr_an( const char * s, int n ) { return wine_dbgstr_an( s, n ); }
 inline static const char *debugstr_wn( const WCHAR *s, int n ) { return wine_dbgstr_wn( s, n ); }
@@ -80,31 +125,33 @@ inline static const char *debugstr_w( const WCHAR *s ) { return wine_dbgstr_wn(
 inline static const char *debugres_a( const char *s )  { return wine_dbgstr_an( s, 80 ); }
 inline static const char *debugres_w( const WCHAR *s ) { return wine_dbgstr_wn( s, 80 ); }
 
-#define TRACE        __DPRINTF(_TRACE,__wine_dbch___default)
-#define TRACE_(ch)   __DPRINTF(_TRACE,__wine_dbch_##ch)
-#define TRACE_ON(ch) __GET_DEBUGGING(_TRACE,__wine_dbch_##ch)
+#define TRACE                      WINE_TRACE
+#define TRACE_(ch)                 WINE_TRACE_(ch)
+#define TRACE_ON(ch)               WINE_TRACE_ON(ch)
 
-#define WARN         __DPRINTF(_WARN,__wine_dbch___default)
-#define WARN_(ch)    __DPRINTF(_WARN,__wine_dbch_##ch)
-#define WARN_ON(ch)  __GET_DEBUGGING(_WARN,__wine_dbch_##ch)
+#define WARN                       WINE_WARN
+#define WARN_(ch)                  WINE_WARN_(ch)
+#define WARN_ON(ch)                WINE_WARN_ON(ch)
 
-#define FIXME        __DPRINTF(_FIXME,__wine_dbch___default)
-#define FIXME_(ch)   __DPRINTF(_FIXME,__wine_dbch_##ch)
-#define FIXME_ON(ch) __GET_DEBUGGING(_FIXME,__wine_dbch_##ch)
+#define FIXME                      WINE_FIXME
+#define FIXME_(ch)                 WINE_FIXME_(ch)
+#define FIXME_ON(ch)               WINE_FIXME_ON(ch)
 
 #undef ERR  /* Solaris got an 'ERR' define in <sys/reg.h> */
-#define ERR          __DPRINTF(_ERR,__wine_dbch___default)
-#define ERR_(ch)     __DPRINTF(_ERR,__wine_dbch_##ch)
-#define ERR_ON(ch)   __GET_DEBUGGING(_ERR,__wine_dbch_##ch)
+#define ERR                        WINE_ERR
+#define ERR_(ch)                   WINE_ERR_(ch)
+#define ERR_ON(ch)                 WINE_ERR_ON(ch)
 
-#define DECLARE_DEBUG_CHANNEL(ch) \
-    extern char __wine_dbch_##ch[]
-#define DEFAULT_DEBUG_CHANNEL(ch) \
-    extern char __wine_dbch_##ch[]; static char * const __wine_dbch___default = __wine_dbch_##ch
+#define DECLARE_DEBUG_CHANNEL(ch)  WINE_DECLARE_DEBUG_CHANNEL(ch)
+#define DEFAULT_DEBUG_CHANNEL(ch)  WINE_DEFAULT_DEBUG_CHANNEL(ch)
+
+#define DPRINTF                    WINE_DPRINTF
+#define MESSAGE                    WINE_MESSAGE
 
-#define DPRINTF wine_dbg_printf
-#define MESSAGE wine_dbg_printf
+#endif /* __WINE__ */
 
-#endif  /* __WINE__ */
+#ifdef __cplusplus
+}
+#endif
 
 #endif  /* __WINE_DEBUGTOOLS_H */
diff --git a/misc/options.c b/misc/options.c
index 639c9e6ea143e2ea2b5ae9bd990730c715f4fa37..5b36573d3cb76c0ecbd7f054b53fd8c4f111d583 100644
--- a/misc/options.c
+++ b/misc/options.c
@@ -89,7 +89,7 @@ static void do_managed( const char *arg )
 
 static void do_debugmsg( const char *arg )
 {
-    static const char * const debug_class_names[__DBCL_COUNT] = { "fixme", "err", "warn", "trace" };
+    static const char * const debug_class_names[__WINE_DBCL_COUNT] = { "fixme", "err", "warn", "trace" };
 
     char *opt, *options = strdup(arg);
     int i;
@@ -109,7 +109,7 @@ static void do_debugmsg( const char *arg )
         if (!p || !p[1]) goto error;
         if (p > opt)
         {
-            for (i = 0; i < __DBCL_COUNT; i++)
+            for (i = 0; i < __WINE_DBCL_COUNT; i++)
             {
                 int len = strlen(debug_class_names[i]);
                 if (len != (p - opt)) continue;
@@ -120,7 +120,7 @@ static void do_debugmsg( const char *arg )
                     break;
                 }
             }
-            if (i == __DBCL_COUNT) goto error;  /* class name not found */
+            if (i == __WINE_DBCL_COUNT) goto error;  /* class name not found */
         }
         else
         {
@@ -184,7 +184,7 @@ static void do_debugmsg( const char *arg )
     MESSAGE("Example: --debugmsg +all,warn-heap\n"
             "  turn on all messages except warning heap messages\n");
     MESSAGE("Available message classes:\n");
-    for( i = 0; i < __DBCL_COUNT; i++) MESSAGE( "%-9s", debug_class_names[i] );
+    for( i = 0; i < __WINE_DBCL_COUNT; i++) MESSAGE( "%-9s", debug_class_names[i] );
     MESSAGE("\n\n");
     ExitProcess(1);
 }