diff --git a/CMakeLists.txt b/CMakeLists.txt
index f2ecd10..1c9f7e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@ cmake_minimum_required(VERSION 3.0.0 FATAL_ERROR)
 project (winflexbison)
 
 if(NOT MSVC)
-   message( FATAL_ERROR "Visual Studio Build supported only" )
+   message( WARNING "Visual Studio Build supported only" )
 endif()
 
 add_definitions(-D_CRT_SECURE_NO_WARNINGS)
diff --git a/common/m4/lib/clean-temp.h b/common/m4/lib/clean-temp.h
index 8411b23..f5697b6 100644
--- a/common/m4/lib/clean-temp.h
+++ b/common/m4/lib/clean-temp.h
@@ -1,10 +1,10 @@
 /* Temporary directories and temporary files with automatic cleanup.
-   Copyright (C) 2006, 2011-2021 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2011-2022 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    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 3 of the License, or
+   the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -78,6 +78,11 @@ struct temp_dir
   /* More fields are present here, but not public.  */
 };
 
+/* Remove all registered files and subdirectories inside DIR and DIR itself.
+   DIR cannot be used any more after this call.
+   Return 0 upon success, or -1 if there was some problem.  */
+extern int cleanup_temp_dir (struct temp_dir *dir);
+
 /* Create a temporary directory.
    PREFIX is used as a prefix for the name of the temporary directory. It
    should be short and still give an indication about the program.
@@ -89,7 +94,8 @@ struct temp_dir
    is shown and NULL is returned.  */
 extern struct temp_dir * create_temp_dir (const char *prefix,
                                           const char *parentdir,
-                                          bool cleanup_verbose);
+                                          bool cleanup_verbose)
+  _GL_ATTRIBUTE_DEALLOC (cleanup_temp_dir, 1);
 
 /* Register the given ABSOLUTE_FILE_NAME as being a file inside DIR, that
    needs to be removed before DIR can be removed.
@@ -130,12 +136,9 @@ extern int cleanup_temp_subdir (struct temp_dir *dir,
    Return 0 upon success, or -1 if there was some problem.  */
 extern int cleanup_temp_dir_contents (struct temp_dir *dir);
 
-/* Remove all registered files and subdirectories inside DIR and DIR itself.
-   DIR cannot be used any more after this call.
-   Return 0 upon success, or -1 if there was some problem.  */
-extern int cleanup_temp_dir (struct temp_dir *dir);
-
+#if !defined (__GNUC__) && !defined (__clang__)
 typedef int mode_t;
+#endif
 
 /* ================== Opening and closing temporary files ================== */
 
diff --git a/common/misc/config.h b/common/misc/config.h
index 8d9ab89..5bc5023 100644
--- a/common/misc/config.h
+++ b/common/misc/config.h
@@ -31,7 +31,7 @@
 #define _GL_ATTRIBUTE_COLD
 #define _GL_ASYNC_SAFE
 #define GNULIB_XALLOC_DIE 1
-#define _GL_HAVE__STATIC_ASSERT
+#define _GL_HAVE__STATIC_ASSERT 1
 #define _Static_assert(a, b)
 #define __PGI
 
@@ -39,16 +39,21 @@
 #define _GL_CMP(a, b) (a) == (b)
 
 #define __getopt_argv_const
+#if !defined (__MSYS__) && !defined (__MINGW32__) /* defined in sys/cdefs.h */
 #define _Noreturn
+#endif
 
 #ifndef _GL_INLINE
 #define _GL_INLINE inline
 #endif
 
+/* should be set by including "filename.h"
 #ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
 #define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
-#endif
+#endif */
 
+#if !defined (__MSYS__) && !defined (__MINGW32__) /* defined in sys/stat.h */
 #define S_ISDIR(mode) (mode & _S_IFDIR)
+#endif
 
-extern char* _stpcpy(char *yydest, const char *yysrc);
+extern char* _stpcpy(char *yydest, const char *yysrc);
\ No newline at end of file