diff -urNp trunk.org/mingw-w64-tools/gendef/configure.ac trunk/mingw-w64-tools/gendef/configure.ac
--- trunk.org/mingw-w64-tools/gendef/configure.ac	2009-12-14 10:38:32.000000000 +0200
+++ trunk/mingw-w64-tools/gendef/configure.ac	2009-12-23 14:41:31.399462901 +0200
@@ -28,7 +28,7 @@ AC_TYPE_UINT64_T
 AC_TYPE_UINT8_T
 
 # Checks for library functions.
-AC_FUNC_MALLOC
+#AC_FUNC_MALLOC
 AC_CHECK_FUNCS([memset strdup strrchr])
 
 # Check for libmangle
diff -urNp trunk.org/mingw-w64-tools/gendef/src/gendef.c trunk/mingw-w64-tools/gendef/src/gendef.c
--- trunk.org/mingw-w64-tools/gendef/src/gendef.c	2009-12-14 10:38:32.000000000 +0200
+++ trunk/mingw-w64-tools/gendef/src/gendef.c	2009-12-23 14:36:20.889271640 +0200
@@ -1136,6 +1136,8 @@ decode_mangle (FILE *fp, const char *n)
     }
   release_gc (gc);
 #else
+  (void)fp;
+  (void)n;
   return;
 #endif
 }