Use AC_USE_SYSTEM_EXTENSIONS' instead of the obsolete AC_AIX', etc.

ChangeLog

@@ -1,3 +1,11 @@
+2008-08-20  Ludovic Courtès  <ludo@gnu.org>
+
+	* configure.in: Use `AC_USE_SYSTEM_EXTENSIONS' instead of the
+	obsolete `AC_AIX', `AC_ISC_POSIX' and `AC_MINIX'.  As a side
+	effect, this will define `_POSIX_PTHREAD_SEMANTICS' on Solaris,
+	which provides a standard-conforming version of `readdir_r ()'
+	for instance; it also allows the use of Autoconf 2.62.
+
 2008-08-14  Ludovic Courtès  <ludo@gnu.org>
 
 	* configure.in: Remove incorrect and pointless

configure.in

@@ -73,9 +73,7 @@ AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_AWK
 
-AC_AIX
+AC_USE_SYSTEM_EXTENSIONS
-AC_ISC_POSIX
-AC_MINIX
 
 AC_PROG_CC_C89
 

libguile/ChangeLog

@@ -1,3 +1,10 @@
+2008-08-20  Ludovic Courtès  <ludo@gnu.org>
+
+	* eval.c, filesys.c, gc.c, numbers.c, posix.c, srfi-14.c,
+	stime.c, threads.c: Don't define `_GNU_SOURCE' explicitly as
+	it's now defined in <config.h> thanks to
+	`AC_USE_SYSTEM_EXTENSIONS'.
+
 2008-08-19  Han-Wen Nienhuys  <hanwen@lilypond.org>
 	    Ludovic Courtès  <ludo@gnu.org>
 

libguile/eval.c

@@ -18,8 +18,6 @@
 
 
 
-#define _GNU_SOURCE
-
 /* This file is read twice in order to produce debugging versions of ceval and
  * scm_apply.  These functions, deval and scm_dapply, are produced when we
  * define the preprocessor macro DEVAL.  The file is divided into sections

libguile/filesys.c

@@ -19,7 +19,6 @@
 
 
 /* See stime.c for comments on why _POSIX_C_SOURCE is not always defined. */
-#define _GNU_SOURCE              /* ask glibc for everything */
 #define _LARGEFILE64_SOURCE      /* ask for stat64 etc */
 #ifdef __hpux
 #define _POSIX_C_SOURCE 199506L  /* for readdir_r */

libguile/gc.c

@@ -15,8 +15,6 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#define _GNU_SOURCE
-
 /* #define DEBUGINFO */
 
 #if HAVE_CONFIG_H

libguile/numbers.c

@@ -40,9 +40,6 @@
 
  */
 
-/* tell glibc (2.3) to give prototype for C99 trunc(), csqrt(), etc */
-#define _GNU_SOURCE
-
 #if HAVE_CONFIG_H
 #  include <config.h>
 #endif

libguile/posix.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -21,9 +21,6 @@
 #  include <config.h>
 #endif
 
-/* Make GNU/Linux libc declare everything it has. */
-#define _GNU_SOURCE
-
 #include <stdio.h>
 #include <errno.h>
 

libguile/srfi-14.c

@@ -1,6 +1,6 @@
 /* srfi-14.c --- SRFI-14 procedures for Guile
  *
- * Copyright (C) 2001, 2004, 2006 Free Software Foundation, Inc.
+ * Copyright (C) 2001, 2004, 2006, 2008 Free Software Foundation, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -21,9 +21,6 @@
 #  include <config.h>
 #endif
 
-
-#define _GNU_SOURCE  /* Ask for `isblank ()'.  */
-
 #include <string.h>
 #include <ctype.h>
 

libguile/stime.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -31,7 +31,6 @@
    what it takes away, and decide from that whether to use it, instead of
    hard coding __hpux.  */
 
-#define _GNU_SOURCE  /* ask glibc for everything, in particular strptime */
 #ifndef _REENTRANT
 # define _REENTRANT   /* ask solaris for gmtime_r prototype */
 #endif

libguile/threads.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2002, 2003, 2004, 2005, 2006, 2008 Free Software Foundation, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -18,8 +18,6 @@
 
 
 
-#define _GNU_SOURCE
-
 #include "libguile/_scm.h"
 
 #if HAVE_UNISTD_H