Upgrade to Autoconf 2.63

This upgrades the configure infrastructure to the latest Autoconf version.
Some notable news are:
 - The workaround for the broken fseeko() test is gone.
 - Checking for unknown options is now provided by Autoconf itself.
 - Fixes for Mac OS X

config/c-library.m4

 # Macros that test various C library quirks
-# $PostgreSQL: pgsql/config/c-library.m4,v 1.33 2008/08/21 13:53:28 petere Exp $
+# $PostgreSQL: pgsql/config/c-library.m4,v 1.34 2009/07/02 18:55:40 petere Exp $
 
 
 # PGAC_VAR_INT_TIMEZONE
@@ -297,29 +297,3 @@ int main()
 ])dnl AC_CACHE_VAL
 AC_MSG_RESULT([$pgac_cv_printf_arg_control])
 ])# PGAC_FUNC_PRINTF_ARG_CONTROL
-
-
-# backport from Autoconf 2.61a
-# http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=f0c325537a22105536ac8c4e88656e50f9946486
-
-# AC_FUNC_FSEEKO
-# --------------
-AN_FUNCTION([ftello], [AC_FUNC_FSEEKO])
-AN_FUNCTION([fseeko], [AC_FUNC_FSEEKO])
-AC_DEFUN([AC_FUNC_FSEEKO],
-[_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1,
-   [ac_cv_sys_largefile_source],
-   [Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2).],
-   [[#include <sys/types.h> /* for off_t */
-     #include <stdio.h>]],
-   [[int (*fp) (FILE *, off_t, int) = fseeko;
-     return fseeko (stdin, 0, 0) && fp (stdin, 0, 0);]])
-
-# We used to try defining _XOPEN_SOURCE=500 too, to work around a bug
-# in glibc 2.1.3, but that breaks too many other things.
-# If you want fseeko and ftello with glibc, upgrade to a fixed glibc.
-if test $ac_cv_sys_largefile_source != unknown; then
-  AC_DEFINE(HAVE_FSEEKO, 1,
-    [Define to 1 if fseeko (and presumably ftello) exists and is declared.])
-fi
-])# AC_FUNC_FSEEKO

config/general.m4

-# $PostgreSQL: pgsql/config/general.m4,v 1.10 2008/10/29 09:27:24 petere Exp $
+# $PostgreSQL: pgsql/config/general.m4,v 1.11 2009/07/02 18:55:40 petere Exp $
 
 # This file defines new macros to process configure command line
 # arguments, to replace the brain-dead AC_ARG_WITH and AC_ARG_ENABLE.
@@ -33,7 +33,6 @@ m4_define([pgac_arg_to_variable],
 
 AC_DEFUN([PGAC_ARG],
 [
-pgac_args="$pgac_args pgac_arg_to_variable([$1],[$2])"
 m4_case([$1],
 
 enable, [
@@ -74,22 +73,6 @@ AC_ARG_WITH([$2], [AS_HELP_STRING([--]m4_if($3, -, without, with)[-$2]m4_if($3,
 )
 ])# PGAC_ARG
 
-# PGAC_ARG_CHECK()
-# ----------------
-# Checks if the user passed any --with/without/enable/disable
-# arguments that were not defined. Just prints out a warning message,
-# so this should be called near the end, so the user will see it.
-
-AC_DEFUN([PGAC_ARG_CHECK],
-[for pgac_var in `set | sed 's/=.*//' | $EGREP 'with_|enable_'`; do
-  for pgac_arg in $pgac_args with_gnu_ld; do
-    if test "$pgac_var" = "$pgac_arg"; then
-      continue 2
-    fi
-  done
-  pgac_txt=`echo $pgac_var | sed 's/_/-/g'`
-  AC_MSG_WARN([option ignored: --$pgac_txt])
-done])# PGAC_ARG_CHECK
 
 # PGAC_ARG_BOOL(TYPE, NAME, DEFAULT, HELP-STRING-RHS,
 #               [ACTION-IF-YES], [ACTION-IF-NO])

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.603 2009/07/01 23:15:55 tgl Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.604 2009/07/02 18:55:40 petere Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -19,7 +19,7 @@ m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
 
 AC_INIT([PostgreSQL], [8.5devel], [pgsql-bugs@postgresql.org])
 
-m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.61], [], [m4_fatal([Autoconf version 2.61 is required.
+m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.63], [], [m4_fatal([Autoconf version 2.63 is required.
 Untested combinations of 'autoconf' and PostgreSQL versions are not
 recommended.  You can remove the check from 'configure.in' but it is then
 your responsibility whether the result works or not.])])
@@ -1878,6 +1878,3 @@ AC_CONFIG_HEADERS([src/interfaces/ecpg/include/ecpg_config.h],
                   [echo >src/interfaces/ecpg/include/stamp-h])
 
 AC_OUTPUT
-
-# Warn about unknown options
-PGAC_ARG_CHECK

src/include/pg_config.h.in

@@ -12,6 +12,9 @@
 /* Define to the return type of 'accept' */
 #undef ACCEPT_TYPE_RETURN
 
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
 /* The normal alignment of `double', in bytes. */
 #undef ALIGNOF_DOUBLE
 
@@ -761,9 +764,17 @@
 /* Define to select Win32-style shared memory. */
 #undef USE_WIN32_SHARED_MEMORY
 
-/* 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
 
 /* Size of a WAL file block. This need have no particular relation to BLCKSZ.
    XLOG_BLCKSZ must be a power of 2, and if your system supports O_DIRECT I/O,