diff --git a/reactos/dll/3rdparty/freetype/freetype.rbuild b/reactos/dll/3rdparty/freetype/freetype.rbuild
index c091ce05467..d810cc16f50 100644
--- a/reactos/dll/3rdparty/freetype/freetype.rbuild
+++ b/reactos/dll/3rdparty/freetype/freetype.rbuild
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <!DOCTYPE module SYSTEM "../../../tools/rbuild/project.dtd">
-<module name="freetype" type="kernelmodedll" entrypoint="0" baseaddress="${BASEADDRESS_FREETYPE}" installbase="system32" installname="freetype.dll" allowwarnings="true" crt="libcntpr">
+<module name="freetype" type="kernelmodedll" entrypoint="0" baseaddress="${BASEADDRESS_FREETYPE}" installbase="system32" installname="freetype.dll" crt="libcntpr">
 	<importlibrary definition="freetype.def" />
 	<include base="freetype">include</include>
 	<define name="_DISABLE_TIDENTS" />
diff --git a/reactos/dll/3rdparty/freetype/src/autofit/aflatin.c b/reactos/dll/3rdparty/freetype/src/autofit/aflatin.c
index 9c05c47a266..647c48cbe8d 100644
--- a/reactos/dll/3rdparty/freetype/src/autofit/aflatin.c
+++ b/reactos/dll/3rdparty/freetype/src/autofit/aflatin.c
@@ -197,7 +197,7 @@
         FT_UInt     glyph_index;
         FT_Int      best_point, best_y, best_first, best_last;
         FT_Vector*  points;
-        FT_Bool     round;
+        FT_Bool     round = 0;
 
 
         AF_LOG(( "'%c'", *p ));
diff --git a/reactos/lib/3rdparty/libxml2/catalog.c b/reactos/lib/3rdparty/libxml2/catalog.c
index af84b7c4bc6..b17563aab17 100644
--- a/reactos/lib/3rdparty/libxml2/catalog.c
+++ b/reactos/lib/3rdparty/libxml2/catalog.c
@@ -3250,7 +3250,7 @@ xmlLoadCatalogs(const char *pathss) {
 		cur++;
 	    path = xmlStrndup((const xmlChar *)paths, cur - paths);
 #ifdef _WIN32
-        iLen = strlen(path);
+        iLen = strlen((const char *)path);
         for(i = 0; i < iLen; i++) {
             if(path[i] == '\\') {
                 path[i] = '/';
diff --git a/reactos/lib/3rdparty/libxml2/libxml2.rbuild b/reactos/lib/3rdparty/libxml2/libxml2.rbuild
index 822f8b59729..dd4338aae2a 100644
--- a/reactos/lib/3rdparty/libxml2/libxml2.rbuild
+++ b/reactos/lib/3rdparty/libxml2/libxml2.rbuild
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <!DOCTYPE module SYSTEM "../../../tools/rbuild/project.dtd">
-<module name="libxml2" type="staticlibrary" allowwarnings="true" crt="dll">
+<module name="libxml2" type="staticlibrary" crt="dll">
 	<define name="HAVE_CONFIG_H" />
 	<define name="WIN32" />
 	<define name="_WINDOWS" />
diff --git a/reactos/lib/3rdparty/libxml2/nanoftp.c b/reactos/lib/3rdparty/libxml2/nanoftp.c
index a54b85b3a54..55b9d327bc6 100644
--- a/reactos/lib/3rdparty/libxml2/nanoftp.c
+++ b/reactos/lib/3rdparty/libxml2/nanoftp.c
@@ -78,11 +78,13 @@
 
 
 #if defined(__MINGW32__) || defined(_WIN32_WCE)
+#ifndef _WINSOCKAPI_
 #define _WINSOCKAPI_
+#endif
 #include <wsockcompat.h>
 #include <winsock2.h>
 #undef XML_SOCKLEN_T
-#define XML_SOCKLEN_T unsigned int
+#define XML_SOCKLEN_T int
 #endif
 
 /**
diff --git a/reactos/lib/3rdparty/libxml2/nanohttp.c b/reactos/lib/3rdparty/libxml2/nanohttp.c
index 9001ae55118..4d4fa2edbf2 100644
--- a/reactos/lib/3rdparty/libxml2/nanohttp.c
+++ b/reactos/lib/3rdparty/libxml2/nanohttp.c
@@ -75,11 +75,13 @@
 #endif
 
 #if defined(__MINGW32__) || defined(_WIN32_WCE)
+#ifndef _WINSOCKAPI_
 #define _WINSOCKAPI_
+#endif
 #include <wsockcompat.h>
 #include <winsock2.h>
 #undef XML_SOCKLEN_T
-#define XML_SOCKLEN_T unsigned int
+#define XML_SOCKLEN_T int
 #endif
 
 
diff --git a/reactos/lib/3rdparty/libxml2/threads.c b/reactos/lib/3rdparty/libxml2/threads.c
index 23cb200ac57..e7dd4179846 100644
--- a/reactos/lib/3rdparty/libxml2/threads.c
+++ b/reactos/lib/3rdparty/libxml2/threads.c
@@ -453,7 +453,7 @@ __xmlGlobalInitMutexLock(void)
 
         /* Swap it into the global_init_lock */
 #ifdef InterlockedCompareExchangePointer
-        InterlockedCompareExchangePointer(&global_init_lock, cs, NULL);
+        (void)InterlockedCompareExchangePointer(&global_init_lock, cs, NULL);
 #else /* Use older void* version */
         InterlockedCompareExchange((void **) &global_init_lock,
                                    (void *) cs, NULL);
@@ -936,7 +936,7 @@ xmlOnceInit(void)
 
 #if defined(HAVE_WIN32_THREADS)
     if (!run_once.done) {
-        if (InterlockedIncrement(&run_once.control) == 1) {
+        if (InterlockedIncrement((PLONG)&run_once.control) == 1) {
 #if !defined(HAVE_COMPILER_TLS)
             globalkey = TlsAlloc();
 #endif
diff --git a/reactos/lib/3rdparty/libxml2/trionan.c b/reactos/lib/3rdparty/libxml2/trionan.c
index 00b2042673e..b7a65578472 100644
--- a/reactos/lib/3rdparty/libxml2/trionan.c
+++ b/reactos/lib/3rdparty/libxml2/trionan.c
@@ -58,6 +58,7 @@
 #  endif
 #endif
 /* Small ReactOS hack */
+#undef fpclassify
 #define fpclassify _fpclass
 #include <assert.h>
 
@@ -213,6 +214,7 @@ TRIO_ARGS2((number, has_mantissa),
   return is_special_quantity;
 }
 
+#if 0
 /*
  * trio_is_negative
  */
@@ -230,6 +232,7 @@ TRIO_ARGS1((number),
   }
   return is_negative;
 }
+#endif
 
 #endif /* USE_IEEE_754 */
 
diff --git a/reactos/lib/3rdparty/libxml2/uri.c b/reactos/lib/3rdparty/libxml2/uri.c
index 28401c8c26e..33e33d0468b 100644
--- a/reactos/lib/3rdparty/libxml2/uri.c
+++ b/reactos/lib/3rdparty/libxml2/uri.c
@@ -2453,7 +2453,6 @@ xmlCanonicPath(const xmlChar *path)
  */
 #if defined(_WIN32) && !defined(__CYGWIN__)    
     int len = 0;
-    int i = 0;
     xmlChar *p = NULL;
 #endif
     xmlURIPtr uri;
@@ -2522,7 +2521,7 @@ path_processing:
     len = xmlStrlen(path);
     if ((len > 2) && IS_WINDOWS_PATH(path)) {
         /* make the scheme 'file' */
-	uri->scheme = xmlStrdup(BAD_CAST "file");
+	uri->scheme = (char*)xmlStrdup(BAD_CAST "file");
 	/* allocate space for leading '/' + path + string terminator */
 	uri->path = xmlMallocAtomic(len + 2);
 	if (uri->path == NULL) {
@@ -2531,15 +2530,15 @@ path_processing:
 	}
 	/* Put in leading '/' plus path */
 	uri->path[0] = '/';
-	p = uri->path + 1;
-	strncpy(p, path, len + 1);
+	p = (xmlChar *)uri->path + 1;
+	strncpy((char *)p, (const char *)path, len + 1);
     } else {
-	uri->path = xmlStrdup(path);
+	uri->path = (char*)xmlStrdup(path);
 	if (uri->path == NULL) {
 	    xmlFreeURI(uri);
 	    return(NULL);
 	}
-	p = uri->path;
+	p = (xmlChar *)uri->path;
     }
     /* Now change all occurences of '\' to '/' */
     while (*p != '\0') {
diff --git a/reactos/lib/sdk/crt/crt.rbuild b/reactos/lib/sdk/crt/crt.rbuild
index b39c50ca7e6..08c2012ff87 100644
--- a/reactos/lib/sdk/crt/crt.rbuild
+++ b/reactos/lib/sdk/crt/crt.rbuild
@@ -15,7 +15,7 @@
 	</directory>
 </module>
 
-<module name="crt" type="staticlibrary" allowwarnings="true">
+<module name="crt" type="staticlibrary">
 	<library>chkstk</library>
 	<include base="crt">.</include>
 	<include base="crt">include</include>
diff --git a/reactos/lib/sdk/crt/except/cppexcept.c b/reactos/lib/sdk/crt/except/cppexcept.c
index 5e301dae8b5..f84682d61e9 100644
--- a/reactos/lib/sdk/crt/except/cppexcept.c
+++ b/reactos/lib/sdk/crt/except/cppexcept.c
@@ -105,6 +105,7 @@ static void dump_exception_type( const cxx_exception_type *type )
 
 static void dump_function_descr( const cxx_function_descr *descr )
 {
+#ifndef WINE_NO_TRACE_MSGS
     UINT i;
     int j;
 
@@ -122,6 +123,7 @@ static void dump_function_descr( const cxx_function_descr *descr )
                  descr->tryblock[i].start_level, descr->tryblock[i].end_level,
                  descr->tryblock[i].catch_level, descr->tryblock[i].catchblock,
                  descr->tryblock[i].catchblock_count );
+
         for (j = 0; j < descr->tryblock[i].catchblock_count; j++)
         {
             const catchblock_info *ptr = &descr->tryblock[i].catchblock[j];
@@ -130,6 +132,7 @@ static void dump_function_descr( const cxx_function_descr *descr )
                      ptr->type_info, dbgstr_type_info( ptr->type_info ) );
         }
     }
+#endif
 }
 
 /* check if the exception type is caught by a given catch block, and return the type that matched */
diff --git a/reactos/tools/mkhive/cmi.c b/reactos/tools/mkhive/cmi.c
index 147b20de3b9..72b3908f781 100644
--- a/reactos/tools/mkhive/cmi.c
+++ b/reactos/tools/mkhive/cmi.c
@@ -241,8 +241,6 @@ CmiAddSubKey(
 	HSTORAGE_TYPE Storage;
 	ULONG i;
 
-	DPRINT("CmiAddSubKey(%p '%wZ')\n", RegistryHive, SubKeyName);
-
 	VERIFY_KEY_CELL(ParentKeyCell);
 
 	/* Skip leading backslash */
@@ -523,8 +521,6 @@ CmiScanForSubKey(
 
 	VERIFY_KEY_CELL(KeyCell);
 
-	DPRINT("CmiScanForSubKey('%wZ')\n", SubKeyName);
-
 	ASSERT(RegistryHive);
 
 	*pSubKeyCell = NULL;
diff --git a/reactos/tools/mkhive/mkhive.rbuild b/reactos/tools/mkhive/mkhive.rbuild
index 341d1dc15c7..d4a95fd99d9 100644
--- a/reactos/tools/mkhive/mkhive.rbuild
+++ b/reactos/tools/mkhive/mkhive.rbuild
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <!DOCTYPE module SYSTEM "../../tools/rbuild/project.dtd">
-<module name="mkhive" type="buildtool" allowwarnings="true">
+<module name="mkhive" type="buildtool">
 	<include base="inflibhost">.</include>
 	<include base="cmlibhost">.</include>
 	<include base="zlibhost">.</include>
diff --git a/reactos/tools/mkhive/rtl.c b/reactos/tools/mkhive/rtl.c
index eec2fc3872e..85fc04b6327 100644
--- a/reactos/tools/mkhive/rtl.c
+++ b/reactos/tools/mkhive/rtl.c
@@ -7,6 +7,12 @@
 #include <stdlib.h>
 #include <stdarg.h>
 
+/* gcc defaults to cdecl */
+#if defined(__GNUC__)
+#undef __cdecl
+#define __cdecl
+#endif
+
 #include "mkhive.h"
 #include <bitmap.c>
 
diff --git a/reactos/tools/wmc/wmc.rbuild b/reactos/tools/wmc/wmc.rbuild
index 6822c8297c5..f548ac5f512 100644
--- a/reactos/tools/wmc/wmc.rbuild
+++ b/reactos/tools/wmc/wmc.rbuild
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <!DOCTYPE module SYSTEM "../../tools/rbuild/project.dtd">
-<module name="wmc" type="buildtool" allowwarnings="true">
+<module name="wmc" type="buildtool">
 	<define name="WINE_UNICODE_API">" "</define>
 	<include base="unicode">.</include>
 	<library>unicode</library>
diff --git a/reactos/tools/wmc/wmctypes.h b/reactos/tools/wmc/wmctypes.h
index 9fdb3a75b5b..884200375b0 100644
--- a/reactos/tools/wmc/wmctypes.h
+++ b/reactos/tools/wmc/wmctypes.h
@@ -22,6 +22,7 @@
 #define __WMC_WMCTYPES_H
 
 #include <stdarg.h>
+#include <string.h>
 #include <host/typedefs.h>
 
 /* Byteordering defines */