diff --git a/lib/libc/mingw/include/config.h b/lib/libc/mingw/include/config.h
new file mode 100644
index 0000000000..2e74ae1d19
--- /dev/null
+++ b/lib/libc/mingw/include/config.h
@@ -0,0 +1,73 @@
+/* config.h.  Generated from config.h.in by configure.  */
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#define HAVE_STDIO_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Name of package */
+#define PACKAGE "mingw-w64-runtime"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "mingw-w64-public@lists.sourceforge.net"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "mingw-w64-runtime"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "mingw-w64-runtime 4.0b"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "mingw-w64-runtime"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "4.0b"
+
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "4.0b"
+
+/* Build DFP support */
+/* #undef __ENABLE_DFP */
+
+/* Define as -1 to enable command line globbing or 0 to disable it. */
+#define __ENABLE_GLOBBING 0
+
+/* Build DFP support */
+/* #undef __ENABLE_PRINTF128 */
+
+/* Build DFP support */
+/* #undef __ENABLE_REGISTEREDPRINTF */
+
+/* Build softmath routines */
+/* #undef __ENABLE_SOFTMATH */