--- a/libffi/fficonfig.h.in	Thu Oct 25 07:37:49 2018 +0900
+++ b/libffi/fficonfig.h.in	Thu Feb 13 11:34:05 2020 +0900
@@ -121,13 +121,13 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
+/* Define to 1 if GNU symbol versioning is used for libatomic. */
+#undef LIBAT_GNU_SYMBOL_VERSIONING
+
 /* Define to the sub-directory in which libtool stores uninstalled libraries.
    */
 #undef LT_OBJDIR
 
-/* Define to 1 if your C compiler doesn't accept -c and -o together. */
-#undef NO_MINUS_C_MINUS_O
-
 /* Name of package */
 #undef PACKAGE
 
@@ -188,6 +188,9 @@
 # endif
 #endif
 
+/* Define to `unsigned int' if <sys/types.h> does not define. */
+#undef size_t
+
 
 #ifdef HAVE_HIDDEN_VISIBILITY_ATTRIBUTE
 #ifdef LIBFFI_ASM