configure.in: Avoid autoconf warning: Assume C89 semantics that

RETSIGTYPE is always void (issue #8510).
pyconfig.h: Regenerate

configure

 #! /bin/sh
-# From configure.in Revision: 80966 .
+# From configure.in Revision: 80969 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.65 for python 2.7.
 #
@@ -6511,39 +6511,11 @@ _ACEOF
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking return type of signal handlers" >&5
-$as_echo_n "checking return type of signal handlers... " >&6; }
-if test "${ac_cv_type_signal+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <signal.h>
-
-int
-main ()
-{
-return *(signal (0, 0)) (0) == 1;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_type_signal=int
-else
-  ac_cv_type_signal=void
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_signal" >&5
-$as_echo "$ac_cv_type_signal" >&6; }
 
 cat >>confdefs.h <<_ACEOF
-#define RETSIGTYPE $ac_cv_type_signal
+#define RETSIGTYPE void
 _ACEOF
 
-
 ac_fn_c_check_type "$LINENO" "size_t" "ac_cv_type_size_t" "$ac_includes_default"
 if test "x$ac_cv_type_size_t" = x""yes; then :
 

configure.in

@@ -1474,18 +1474,7 @@ EOF
 AC_TYPE_MODE_T
 AC_TYPE_OFF_T
 AC_TYPE_PID_T
-AC_DIAGNOSE([obsolete],[your code may safely assume C89 semantics that RETSIGTYPE is void.
-Remove this warning and the `AC_CACHE_CHECK' when you adjust the code.])dnl
-AC_CACHE_CHECK([return type of signal handlers],[ac_cv_type_signal],[AC_COMPILE_IFELSE(
-[AC_LANG_PROGRAM([#include <sys/types.h>
-#include <signal.h>
-],
-		 [return *(signal (0, 0)) (0) == 1;])],
-		   [ac_cv_type_signal=int],
-		   [ac_cv_type_signal=void])])
-AC_DEFINE_UNQUOTED([RETSIGTYPE],[$ac_cv_type_signal],[Define as the return type of signal handlers
-		    (`int' or `void').])
-
+AC_DEFINE_UNQUOTED([RETSIGTYPE],[void],[assume C89 semantics that RETSIGTYPE is always void])
 AC_TYPE_SIZE_T
 AC_TYPE_UID_T
 AC_TYPE_UINT32_T

pyconfig.h.in

@@ -5,6 +5,9 @@
 #define Py_PYCONFIG_H
 
 
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
 /* Define for AIX if your compiler is a genuine IBM xlC/xlC_r and you want
    support for AIX C++ shared extension modules. */
 #undef AIX_GENUINE_CPLUSPLUS
@@ -674,25 +677,25 @@
 /* Define to 1 if you have the <stropts.h> header file. */
 #undef HAVE_STROPTS_H
 
-/* Define to 1 if `st_birthtime' is member of `struct stat'. */
+/* Define to 1 if `st_birthtime' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BIRTHTIME
 
-/* Define to 1 if `st_blksize' is member of `struct stat'. */
+/* Define to 1 if `st_blksize' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BLKSIZE
 
-/* Define to 1 if `st_blocks' is member of `struct stat'. */
+/* Define to 1 if `st_blocks' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_BLOCKS
 
-/* Define to 1 if `st_flags' is member of `struct stat'. */
+/* Define to 1 if `st_flags' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_FLAGS
 
-/* Define to 1 if `st_gen' is member of `struct stat'. */
+/* Define to 1 if `st_gen' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_GEN
 
-/* Define to 1 if `st_rdev' is member of `struct stat'. */
+/* Define to 1 if `st_rdev' is a member of `struct stat'. */
 #undef HAVE_STRUCT_STAT_ST_RDEV
 
-/* Define to 1 if `tm_zone' is member of `struct tm'. */
+/* Define to 1 if `tm_zone' is a member of `struct tm'. */
 #undef HAVE_STRUCT_TM_TM_ZONE
 
 /* Define to 1 if your `struct stat' has `st_blocks'. Deprecated, use
@@ -915,6 +918,9 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
@@ -948,7 +954,7 @@
 /* Define if you want to have a Unicode type. */
 #undef Py_USING_UNICODE
 
-/* Define as the return type of signal handlers (`int' or `void'). */
+/* assume C89 semantics that RETSIGTYPE is always void */
 #undef RETSIGTYPE
 
 /* Define if setpgrp() must be called as setpgrp(0, 0). */
@@ -1027,6 +1033,28 @@
 /* Define to 1 if your <sys/time.h> declares `struct tm'. */
 #undef TM_IN_SYS_TIME
 
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+
+
 /* Define if you want to use MacPython modules on MacOSX in unix-Python. */
 #undef USE_TOOLBOX_OBJECT_GLUE
 
@@ -1070,20 +1098,21 @@
 /* Define if you want pymalloc to be disabled when running under valgrind */
 #undef WITH_VALGRIND
 
-/* Define to 1 if your processor stores words with the most significant byte
-   first (like Motorola and SPARC, unlike Intel and VAX). */
-#undef WORDS_BIGENDIAN
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+#  undef WORDS_BIGENDIAN
+# endif
+#endif
 
 /* Define if arithmetic is subject to x87-style double rounding issue */
 #undef X87_DOUBLE_ROUNDING
 
-/* Define to 1 if on AIX 3.
-   System headers sometimes define this.
-   We just want to avoid a redefinition error message.  */
-#ifndef _ALL_SOURCE
-# undef _ALL_SOURCE
-#endif
-
 /* Define on OpenBSD to activate all library features */
 #undef _BSD_SOURCE
 
@@ -1102,15 +1131,25 @@
 /* This must be defined on some systems to enable large file support. */
 #undef _LARGEFILE_SOURCE
 
+/* Define to 1 if on MINIX. */
+#undef _MINIX
+
 /* Define on NetBSD to activate all library features */
 #undef _NETBSD_SOURCE
 
 /* Define _OSF_SOURCE to get the makedev macro. */
 #undef _OSF_SOURCE
 
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+#undef _POSIX_1_SOURCE
+
 /* Define to activate features from IEEE Stds 1003.1-2001 */
 #undef _POSIX_C_SOURCE
 
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#undef _POSIX_SOURCE
+
 /* Define if you have POSIX threads, and your system does not define that. */
 #undef _POSIX_THREADS
 
@@ -1118,12 +1157,12 @@
 #undef _REENTRANT
 
 /* Define for Solaris 2.5.1 so the uint32_t typedef from <sys/synch.h>,
-   <pthread.h>, or <semaphore.h> is not used. If the typedef was allowed, the
+   <pthread.h>, or <semaphore.h> is not used. If the typedef were allowed, the
    #define below would cause a syntax error. */
 #undef _UINT32_T
 
 /* Define for Solaris 2.5.1 so the uint64_t typedef from <sys/synch.h>,
-   <pthread.h>, or <semaphore.h> is not used. If the typedef was allowed, the
+   <pthread.h>, or <semaphore.h> is not used. If the typedef were allowed, the
    #define below would cause a syntax error. */
 #undef _UINT64_T