--- a/libstdc++-v3/config.h.in	Thu Oct 25 07:37:49 2018 +0900
+++ b/libstdc++-v3/config.h.in	Thu Feb 13 11:34:05 2020 +0900
@@ -33,6 +33,9 @@
 /* Define to 1 if you have the `atanl' function. */
 #undef HAVE_ATANL
 
+/* Defined if shared_ptr reference counting should use atomic operations. */
+#undef HAVE_ATOMIC_LOCK_POLICY
+
 /* Define to 1 if you have the `at_quick_exit' function. */
 #undef HAVE_AT_QUICK_EXIT
 
@@ -387,6 +390,9 @@
 /* Defined if sleep exists. */
 #undef HAVE_SLEEP
 
+/* Define to 1 if you have the `sockatmark' function. */
+#undef HAVE_SOCKATMARK
+
 /* Define to 1 if you have the `sqrtf' function. */
 #undef HAVE_SQRTF
 
@@ -505,9 +511,15 @@
 /* Define to 1 if you have the <tgmath.h> header file. */
 #undef HAVE_TGMATH_H
 
+/* Define to 1 if you have the `timespec_get' function. */
+#undef HAVE_TIMESPEC_GET
+
 /* Define to 1 if the target supports thread-local storage. */
 #undef HAVE_TLS
 
+/* Define if truncate is available in <unistd.h>. */
+#undef HAVE_TRUNCATE
+
 /* Define to 1 if you have the <uchar.h> header file. */
 #undef HAVE_UCHAR_H
 
@@ -791,6 +803,14 @@
 /* Version number of package */
 #undef VERSION
 
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
 /* Define if C99 functions in <complex.h> should be used in <complex> for
    C++11. Using compiler builtins for these functions requires corresponding
    C99 library functions to be present. */
@@ -967,6 +987,9 @@
 /* Define if code specialized for long long should be used. */
 #undef _GLIBCXX_USE_LONG_LONG
 
+/* Define if lstat is available in <sys/stat.h>. */
+#undef _GLIBCXX_USE_LSTAT
+
 /* Defined if nanosleep is available. */
 #undef _GLIBCXX_USE_NANOSLEEP
 
@@ -976,6 +999,16 @@
 /* Define if pthreads_num_processors_np is available in <pthread.h>. */
 #undef _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP
 
+/* Define if pthread_cond_clockwait is available in <pthread.h>. */
+#undef _GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT
+
+/* Define if pthread_mutex_clocklock is available in <pthread.h>. */
+#undef _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK
+
+/* Define if pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock are
+   available in <pthread.h>. */
+#undef _GLIBCXX_USE_PTHREAD_RWLOCK_CLOCKLOCK
+
 /* Define if POSIX read/write locks are available in <gthr.h>. */
 #undef _GLIBCXX_USE_PTHREAD_RWLOCK_T
 
@@ -1007,6 +1040,9 @@
 /* Define if obsolescent tmpnam is available in <stdio.h>. */
 #undef _GLIBCXX_USE_TMPNAM
 
+/* Define if utime is available in <utime.h>. */
+#undef _GLIBCXX_USE_UTIME
+
 /* Define if utimensat and UTIME_OMIT are available in <sys/stat.h> and
    AT_FDCWD in <fcntl.h>. */
 #undef _GLIBCXX_USE_UTIMENSAT
@@ -1020,9 +1056,15 @@
 /* Defined if as can handle rdrand. */
 #undef _GLIBCXX_X86_RDRAND
 
+/* Defined if as can handle rdseed. */
+#undef _GLIBCXX_X86_RDSEED
+
 /* Define to 1 if mutex_timedlock is available. */
 #undef _GTHREAD_USE_MUTEX_TIMEDLOCK
 
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
 /* Define if all C++11 floating point overloads are available in <math.h>.  */
 #if __cplusplus >= 201103L
 #undef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP