Changes to m4/configure.ac [branch-1_4]

[Eric Blake]

Index: m4/configure.ac
diff -u m4/configure.ac:1.36.2.7 m4/configure.ac:1.36.2.8
--- m4/configure.ac:1.36.2.7    Thu Oct 20 12:50:53 2005
+++ m4/configure.ac     Sat May 27 18:11:23 2006
@@ -1,5 +1,6 @@
 # Configure template for GNU M4.                       -*-Autoconf-*-
-# Copyright (C) 1991, 1993, 1994, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 1991, 1993, 1994, 2004, 2005, 2006 Free Software
+# Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -16,10 +17,12 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301  USA
 
-
+AC_PREREQ([2.59])
 AC_INIT([GNU M4], [1.4.4a], address@hidden)
-PACKAGE=$PACKAGE_TARNAME; AC_SUBST(PACKAGE)
-VERSION=$PACKAGE_VERSION; AC_SUBST(VERSION)
+PACKAGE=$PACKAGE_TARNAME; AC_SUBST([PACKAGE])
+VERSION=$PACKAGE_VERSION; AC_SUBST([VERSION])
+
+m4_pattern_forbid([^M4_])
 
 AC_CONFIG_SRCDIR([src/m4.h])
 AC_CONFIG_HEADERS([config.h:config-h.in])
@@ -34,7 +37,6 @@
 AC_AIX
 AC_ISC_POSIX
 AC_MINIX
-fp_C_PROTOTYPES
 AC_C_CONST
 
 AC_CHECK_HEADERS([limits.h memory.h siginfo.h string.h unistd.h])
@@ -51,14 +53,15 @@
 
 AC_MSG_CHECKING([ecvt declaration])
 AC_EGREP_HEADER([ecvt], [stdlib.h],
-  [AC_MSG_RESULT(yes)
+  [AC_MSG_RESULT([yes])
    AC_DEFINE([HAVE_EFGCVT], [2],
-     [Define to 1 if you have ecvt(3), fcvt(3) and gcvt(3).  Define to 2 if 
they are declared in stdlib.h])
+     [Define to 1 if you have ecvt(3), fcvt(3) and gcvt(3).  Define to 2 if
+they are declared in stdlib.h])
   ],
-  [AC_MSG_RESULT(no); AC_CHECK_FUNCS(ecvt)])
+  [AC_MSG_RESULT([no]); AC_CHECK_FUNCS([ecvt])])
 
 
-AC_MSG_CHECKING(if stack overflow is detectable)
+AC_MSG_CHECKING([if stack overflow is detectable])
 # Code from Jim Avera <address@hidden>.
 # stackovf.c requires:
 #  1. Either sigaction with SA_ONSTACK, or sigvec with SV_ONSTACK
@@ -67,23 +70,22 @@
 use_stackovf=no
 if test "$ac_cv_func_sigaction" = yes || test "$ac_cv_func_sigvec" = yes; then
   if test "$ac_cv_func_sigaltstack" = yes || test "$ac_cv_func_sigstack" = 
yes; then
-    AC_TRY_LINK([#include <sys/time.h>
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/time.h>
 #include <sys/resource.h>
-#include <signal.h>],
-      [struct rlimit r; int i; getrlimit (RLIMIT_STACK, &r)
+#include <signal.h>]],
+      [[struct rlimit r; int i; getrlimit (RLIMIT_STACK, &r)
 #if (!defined(HAVE_SIGACTION) || !defined(SA_ONSTACK)) \
     && (!defined(HAVE_SIGVEC) || !defined(SV_ONSTACK))
 choke me               /* SA_ONSTACK and/or SV_ONSTACK are not defined */
-#endif],
-      use_stackovf=yes)
+#endif]])],[use_stackovf=yes],[])
   fi
 fi
-AC_MSG_RESULT($use_stackovf)
+AC_MSG_RESULT([$use_stackovf])
 if test "$use_stackovf" = yes; then
   AC_DEFINE([USE_STACKOVF], [1],
     [Define to 1 if using stack overflow detection])
-  STACKOVF=stackovf.${U}o
-  AC_SUBST(STACKOVF)
+  STACKOVF=stackovf.$(OBJEXT)
+  AC_SUBST([STACKOVF])
   AC_EGREP_HEADER([rlim_t], [sys/resource.h], [],
     [AC_DEFINE([rlim_t], [int],
       [Define to int if rlim_t is not defined in sys/resource.h])
@@ -100,16 +102,17 @@
 
 AC_MSG_CHECKING([[if changeword is wanted]])
 AC_ARG_ENABLE([changeword],
-  [[  --enable-changeword     enable -W and changeword() builtin]],
+  [AS_HELP_STRING([--enable-changeword],
+     [enable -W and changeword() builtin])],
   [if test "$enableval" = yes; then
-    AC_MSG_RESULT(yes)
+    AC_MSG_RESULT([yes])
     AC_DEFINE([ENABLE_CHANGEWORD], [1],
       [Define to 1 if the changeword(REGEXP) functionality is wanted])
   else
-    AC_MSG_RESULT(no)
-  fi], [AC_MSG_RESULT(no)])
+    AC_MSG_RESULT([no])
+  fi], [AC_MSG_RESULT([no])])
 
-fp_WITH_DMALLOC
+M4_WITH_DMALLOC
 
 AC_CONFIG_FILES([stamp-h], [[test -z "$CONFIG_HEADERS" || date > stamp-h]])