diff --git a/configure b/configure
index 6fa4051310b124..a8e92e953ed98a 100755
--- a/configure
+++ b/configure
@@ -9444,14 +9444,10 @@ fi
 ac_fn_c_check_type "$LINENO" "ssize_t" "ac_cv_type_ssize_t" "$ac_includes_default"
 if test "x$ac_cv_type_ssize_t" = xyes; then :
 
-$as_echo "#define HAVE_SSIZE_T 1" >>confdefs.h
-
-fi
-
-ac_fn_c_check_type "$LINENO" "__uint128_t" "ac_cv_type___uint128_t" "$ac_includes_default"
-if test "x$ac_cv_type___uint128_t" = xyes; then :
+cat >>confdefs.h <<_ACEOF
+#define HAVE_SSIZE_T 1
+_ACEOF
 
-$as_echo "#define HAVE_GCC_UINT128_T 1" >>confdefs.h
 
 fi
 
@@ -21217,20 +21213,27 @@ $as_echo "#define PY_FORMAT_SIZE_T \"z\"" >>confdefs.h
 fi
 
 ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
+  #ifdef HAVE_SYS_TYPES_H
+  #  include <sys/types.h>
+  #endif
+  #ifdef HAVE_SYS_SOCKET_H
+  #  include <sys/socket.h>
+  #endif
 
 "
 if test "x$ac_cv_type_socklen_t" = xyes; then :
 
+cat >>confdefs.h <<_ACEOF
+#define HAVE_SOCKLEN_T 1
+_ACEOF
+
+
 else
 
+
 $as_echo "#define socklen_t int" >>confdefs.h
 
+
 fi
 
 
diff --git a/configure.ac b/configure.ac
index bef4904325b521..bbae9797d7df06 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2648,10 +2648,7 @@ AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[assume C89 semantics that RETSIGTYPE is
 AC_TYPE_SIZE_T
 AC_TYPE_UID_T
 
-AC_CHECK_TYPE(ssize_t,
-  AC_DEFINE(HAVE_SSIZE_T, 1, [Define if your compiler provides ssize_t]),,)
-AC_CHECK_TYPE(__uint128_t,
-  AC_DEFINE(HAVE_GCC_UINT128_T, 1, [Define if your compiler provides __uint128_t]),,)
+AC_CHECK_TYPES([ssize_t])
 
 # Sizes and alignments of various common basic types
 # ANSI C requires sizeof(char) == 1, so no need to check it
@@ -6050,15 +6047,18 @@ if test "$ac_cv_have_size_t_format" != no ; then
   [Define to printf format modifier for Py_ssize_t])
 fi
 
-AC_CHECK_TYPE(socklen_t,,
-  AC_DEFINE(socklen_t,int,
-            [Define to `int' if <sys/socket.h> does not define.]),[
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
+AC_CHECK_TYPES([socklen_t], [], [
+  AC_DEFINE(
+    [socklen_t], [int],
+    [Define to `int' if <sys/socket.h> does not define.]
+  )
+], [
+  #ifdef HAVE_SYS_TYPES_H
+  #  include <sys/types.h>
+  #endif
+  #ifdef HAVE_SYS_SOCKET_H
+  #  include <sys/socket.h>
+  #endif
 ])
 
 AC_CACHE_CHECK([for broken mbstowcs], [ac_cv_broken_mbstowcs],
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 383fd47dd43c81..f2275681047aae 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -423,9 +423,6 @@
    */
 #undef HAVE_GCC_ASM_FOR_X87
 
-/* Define if your compiler provides __uint128_t */
-#undef HAVE_GCC_UINT128_T
-
 /* Define to 1 if you have the <gdbm-ndbm.h> header file. */
 #undef HAVE_GDBM_DASH_NDBM_H
 
@@ -1097,13 +1094,16 @@
 /* Define if you have the 'socketpair' function. */
 #undef HAVE_SOCKETPAIR
 
+/* Define to 1 if the system has the type `socklen_t'. */
+#undef HAVE_SOCKLEN_T
+
 /* Define to 1 if you have the <spawn.h> header file. */
 #undef HAVE_SPAWN_H
 
 /* Define to 1 if you have the `splice' function. */
 #undef HAVE_SPLICE
 
-/* Define if your compiler provides ssize_t */
+/* Define to 1 if the system has the type `ssize_t'. */
 #undef HAVE_SSIZE_T
 
 /* Define to 1 if you have the `statvfs' function. */