AC_HEADER_STDC

[Derek R. Price]

The attached patch removes references to AC_HEADER_STDC, marked
obsolescent in the Autoconf 2.60 release, from m4/*.m4 and the
corresponding #if STDC_HEADERS sections from lib/*.[ch].  This seems
right since GNULIB already assumes all of the headers AC_HEADER_STDC
checks for (`stdlib.h', `stdarg.h', `string.h', and `float.h').

2006-06-29  Derek R. Price  <address@hidden>

        * lib/exclude.c, lib/exit.h, lib/fnmatch.c, lib/fnmatch_loop.c,
        lib/getusershell.c, lib/mbswidth.c, lib/memcasecmp.c,
        lib/strtod.c, lib/strtol.c, lib/xstrtol.c: Remove sections
        dependent on !STDC_HEADERS.
        * m4/calloc.m4, m4/exclude.m4, m4/getdate.m4, m4/gettext.m4,
        m4/getusershell.m4, m4/memcasecmp.m4, m4/onceonly.m4,
        m4/onceonly_2_57.m4, m4/strtod.m4, m4/strtol.m4, m4/xstrtol.m4:
        Don't call obsolescent AC_HEADER_STDC.

Cheers,

Derek
-- 
Derek R. Price
CVS Solutions Architect
Get CVS support at Ximbiot <http://ximbiot.com>!
v: +1 248.835.1260
f: +1 248.835.1263
<mailto:address@hidden>

Index: lib/exclude.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/exclude.c,v
retrieving revision 1.28
diff -u -p -r1.28 exclude.c
--- lib/exclude.c       25 May 2006 07:02:07 -0000      1.28
+++ lib/exclude.c       29 Jun 2006 19:07:39 -0000
@@ -43,18 +43,6 @@
 # include "unlocked-io.h"
 #endif
 
-#if STDC_HEADERS || (! defined isascii && ! HAVE_ISASCII)
-# define IN_CTYPE_DOMAIN(c) true
-#else
-# define IN_CTYPE_DOMAIN(c) isascii (c)
-#endif
-
-static inline bool
-is_space (unsigned char c)
-{
-  return IN_CTYPE_DOMAIN (c) && isspace (c);
-}
-
 /* Non-GNU systems lack these options, so we don't need to check them.  */
 #ifndef FNM_CASEFOLD
 # define FNM_CASEFOLD 0
@@ -244,12 +232,12 @@ add_exclude_file (void (*add_func) (stru
       {
        char *pattern_end = p;
 
-       if (is_space (line_end))
+       if (isspace (line_end))
          {
            for (; ; pattern_end--)
              if (pattern_end == pattern)
                goto next_pattern;
-             else if (! is_space (pattern_end[-1]))
+             else if (! isspace (pattern_end[-1]))
                break;
          }
 
Index: lib/exit.h
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/exit.h,v
retrieving revision 1.2
diff -u -p -r1.2 exit.h
--- lib/exit.h  14 May 2005 06:03:58 -0000      1.2
+++ lib/exit.h  29 Jun 2006 19:07:39 -0000
@@ -21,7 +21,7 @@
 /* Get exit() declaration.  */
 #include <stdlib.h>
 
-/* Some systems do not define EXIT_*, even with STDC_HEADERS.  */
+/* Some systems do not define EXIT_*, despite otherwise supporting C89.  */
 #ifndef EXIT_SUCCESS
 # define EXIT_SUCCESS 0
 #endif
Index: lib/fnmatch.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/fnmatch.c,v
retrieving revision 1.33
diff -u -p -r1.33 fnmatch.c
--- lib/fnmatch.c       27 Jan 2006 18:40:27 -0000      1.33
+++ lib/fnmatch.c       29 Jun 2006 19:07:39 -0000
@@ -86,34 +86,17 @@ extern int fnmatch (const char *pattern,
 #if defined _LIBC || !defined __GNU_LIBRARY__ || !HAVE_FNMATCH_GNU
 
 
-# if defined STDC_HEADERS || !defined isascii
-#  define ISASCII(c) 1
-# else
-#  define ISASCII(c) isascii(c)
-# endif
-
 # ifdef isblank
-#  define ISBLANK(c) (ISASCII (c) && isblank (c))
+#  define ISBLANK(c) isblank(c)
 # else
 #  define ISBLANK(c) ((c) == ' ' || (c) == '\t')
 # endif
 # ifdef isgraph
-#  define ISGRAPH(c) (ISASCII (c) && isgraph (c))
+#  define ISGRAPH(c) isgraph(c)
 # else
-#  define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
+#  define ISGRAPH(c) (isprint (c) && !isspace (c))
 # endif
 
-# define ISPRINT(c) (ISASCII (c) && isprint (c))
-# define ISDIGIT(c) (ISASCII (c) && isdigit (c))
-# define ISALNUM(c) (ISASCII (c) && isalnum (c))
-# define ISALPHA(c) (ISASCII (c) && isalpha (c))
-# define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
-# define ISLOWER(c) (ISASCII (c) && islower (c))
-# define ISPUNCT(c) (ISASCII (c) && ispunct (c))
-# define ISSPACE(c) (ISASCII (c) && isspace (c))
-# define ISUPPER(c) (ISASCII (c) && isupper (c))
-# define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
-
 # define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
 
 # if defined _LIBC || WIDE_CHAR_SUPPORT
Index: lib/fnmatch_loop.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/fnmatch_loop.c,v
retrieving revision 1.11
diff -u -p -r1.11 fnmatch_loop.c
--- lib/fnmatch_loop.c  27 Jan 2006 18:40:27 -0000      1.11
+++ lib/fnmatch_loop.c  29 Jun 2006 19:07:39 -0000
@@ -288,18 +288,18 @@ FCT (const CHAR *pattern, const CHAR *st
                      goto matched;
 # endif
 #else
-                   if ((STREQ (str, L_("alnum")) && ISALNUM ((UCHAR) *n))
-                       || (STREQ (str, L_("alpha")) && ISALPHA ((UCHAR) *n))
+                   if ((STREQ (str, L_("alnum")) && isalnum ((UCHAR) *n))
+                       || (STREQ (str, L_("alpha")) && isalpha ((UCHAR) *n))
                        || (STREQ (str, L_("blank")) && ISBLANK ((UCHAR) *n))
-                       || (STREQ (str, L_("cntrl")) && ISCNTRL ((UCHAR) *n))
-                       || (STREQ (str, L_("digit")) && ISDIGIT ((UCHAR) *n))
+                       || (STREQ (str, L_("cntrl")) && iscntrl ((UCHAR) *n))
+                       || (STREQ (str, L_("digit")) && isdigit ((UCHAR) *n))
                        || (STREQ (str, L_("graph")) && ISGRAPH ((UCHAR) *n))
-                       || (STREQ (str, L_("lower")) && ISLOWER ((UCHAR) *n))
-                       || (STREQ (str, L_("print")) && ISPRINT ((UCHAR) *n))
-                       || (STREQ (str, L_("punct")) && ISPUNCT ((UCHAR) *n))
-                       || (STREQ (str, L_("space")) && ISSPACE ((UCHAR) *n))
-                       || (STREQ (str, L_("upper")) && ISUPPER ((UCHAR) *n))
-                       || (STREQ (str, L_("xdigit")) && ISXDIGIT ((UCHAR) *n)))
+                       || (STREQ (str, L_("lower")) && islower ((UCHAR) *n))
+                       || (STREQ (str, L_("print")) && isprint ((UCHAR) *n))
+                       || (STREQ (str, L_("punct")) && ispunct ((UCHAR) *n))
+                       || (STREQ (str, L_("space")) && isspace ((UCHAR) *n))
+                       || (STREQ (str, L_("upper")) && isupper ((UCHAR) *n))
+                       || (STREQ (str, L_("xdigit")) && isxdigit ((UCHAR) *n)))
                      goto matched;
 #endif
                    c = *p++;
Index: lib/getusershell.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/getusershell.c,v
retrieving revision 1.22
diff -u -p -r1.22 getusershell.c
--- lib/getusershell.c  23 Sep 2005 04:15:13 -0000      1.22
+++ lib/getusershell.c  29 Jun 2006 19:07:39 -0000
@@ -43,14 +43,6 @@
 # include "unlocked-io.h"
 #endif
 
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
-
 static size_t readname (char **, size_t *, FILE *);
 
 #if ! defined ADDITIONAL_DEFAULT_SHELLS && defined __MSDOS__
@@ -152,14 +144,14 @@ readname (char **name, size_t *size, FIL
   size_t name_index = 0;
 
   /* Skip blank space.  */
-  while ((c = getc (stream)) != EOF && ISSPACE (c))
+  while ((c = getc (stream)) != EOF && isspace (c))
     /* Do nothing. */ ;
 
   for (;;)
     {
       if (*size <= name_index)
        *name = x2nrealloc (*name, size, sizeof **name);
-      if (c == EOF || ISSPACE (c))
+      if (c == EOF || isspace (c))
        break;
       (*name)[name_index++] = c;
       c = getc (stream);
Index: lib/mbswidth.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/mbswidth.c,v
retrieving revision 1.16
diff -u -p -r1.16 mbswidth.c
--- lib/mbswidth.c      28 Jun 2006 17:03:53 -0000      1.16
+++ lib/mbswidth.c      29 Jun 2006 19:07:39 -0000
@@ -60,18 +60,6 @@
 # endif
 #endif
 
-/* Get ISPRINT.  */
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-/* Undefine to protect against the definition in wctype.h of Solaris 2.6.   */
-#undef ISPRINT
-#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
-#undef ISCNTRL
-#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
-
 /* Returns the number of columns needed to represent the multibyte
    character string pointed to by STRING.  If a non-printable character
    occurs, and MBSW_REJECT_UNPRINTABLE is specified, -1 is returned.
@@ -195,10 +183,10 @@ mbsnwidth (const char *string, size_t nb
     {
       unsigned char c = (unsigned char) *p++;
 
-      if (ISPRINT (c))
+      if (isprint (c))
        width++;
       else if (!(flags & MBSW_REJECT_UNPRINTABLE))
-       width += (ISCNTRL (c) ? 0 : 1);
+       width += (iscntrl (c) ? 0 : 1);
       else
        return -1;
     }
Index: lib/memcasecmp.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/memcasecmp.c,v
retrieving revision 1.12
diff -u -p -r1.12 memcasecmp.c
--- lib/memcasecmp.c    19 Sep 2005 17:28:14 -0000      1.12
+++ lib/memcasecmp.c    29 Jun 2006 19:07:39 -0000
@@ -23,19 +23,6 @@
 
 #include <ctype.h>
 
-#if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
-# define IN_CTYPE_DOMAIN(Char) 1
-#else
-# define IN_CTYPE_DOMAIN(Char) isascii (Char)
-#endif
-#define ISLOWER(Char) (IN_CTYPE_DOMAIN (Char) && islower (Char))
-
-#if _LIBC || STDC_HEADERS
-# define TOUPPER(Char) toupper (Char)
-#else
-# define TOUPPER(Char) (ISLOWER (Char) ? toupper (Char) : (Char))
-#endif
-
 #include "memcasecmp.h"
 
 /* Like memcmp, but ignore differences in case.
@@ -52,7 +39,7 @@ memcasecmp (const void *vs1, const void 
     {
       unsigned char u1 = s1[i];
       unsigned char u2 = s2[i];
-      int diff = TOUPPER (u1) - TOUPPER (u2);
+      int diff = toupper (u1) - toupper (u2);
       if (diff)
        return diff;
     }
Index: lib/strtod.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/strtod.c,v
retrieving revision 1.19
diff -u -p -r1.19 strtod.c
--- lib/strtod.c        17 Jun 2006 19:29:36 -0000      1.19
+++ lib/strtod.c        29 Jun 2006 19:07:39 -0000
@@ -22,16 +22,6 @@
 
 #include <ctype.h>
 
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
-#define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
-#define TOLOWER(c) (IN_CTYPE_DOMAIN (c) ? tolower(c) : (c))
-
 #include <math.h>
 
 #include <float.h>
@@ -64,7 +54,7 @@ strtod (const char *nptr, char **endptr)
   s = nptr;
 
   /* Eat whitespace.  */
-  while (ISSPACE (*s))
+  while (isspace (*s))
     ++s;
 
   /* Get the sign.  */
@@ -78,7 +68,7 @@ strtod (const char *nptr, char **endptr)
   exponent = 0;
   for (;; ++s)
     {
-      if (ISDIGIT (*s))
+      if (isdigit (*s))
        {
          got_digit = 1;
 
@@ -111,7 +101,7 @@ strtod (const char *nptr, char **endptr)
   if (!got_digit)
     goto noconv;
 
-  if (TOLOWER (*s) == 'e')
+  if (tolower (*s) == 'e')
     {
       /* Get the exponent specified after the `e' or `E'.  */
       int save = errno;
Index: lib/strtol.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/strtol.c,v
retrieving revision 1.25
diff -u -p -r1.25 strtol.c
--- lib/strtol.c        17 Jun 2006 16:09:19 -0000      1.25
+++ lib/strtol.c        29 Jun 2006 19:07:39 -0000
@@ -208,11 +208,6 @@
 #  define TOUPPER(Ch) towupper (Ch)
 # endif
 #else
-# if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
-#  define IN_CTYPE_DOMAIN(c) 1
-# else
-#  define IN_CTYPE_DOMAIN(c) isascii(c)
-# endif
 # define L_(Ch) Ch
 # define UCHAR_TYPE unsigned char
 # define STRING_TYPE char
@@ -221,9 +216,9 @@
 #  define ISALPHA(Ch) __isalpha_l ((Ch), loc)
 #  define TOUPPER(Ch) __toupper_l ((Ch), loc)
 # else
-#  define ISSPACE(Ch) (IN_CTYPE_DOMAIN (Ch) && isspace (Ch))
-#  define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch))
-#  define TOUPPER(Ch) (IN_CTYPE_DOMAIN (Ch) ? toupper (Ch) : (Ch))
+#  define ISSPACE(Ch) isspace(Ch)
+#  define ISALPHA(Ch) isalpha(Ch)
+#  define TOUPPER(Ch) toupper(Ch)
 # endif
 #endif
 
Index: lib/xstrtol.c
===================================================================
RCS file: /cvsroot/gnulib/gnulib/lib/xstrtol.c,v
retrieving revision 1.38
diff -u -p -r1.38 xstrtol.c
--- lib/xstrtol.c       19 Sep 2005 17:28:15 -0000      1.38
+++ lib/xstrtol.c       29 Jun 2006 19:07:40 -0000
@@ -51,14 +51,6 @@
 # define STRTOL_T_MAXIMUM TYPE_MAXIMUM (__strtol_t)
 #endif
 
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
-
 #if !HAVE_DECL_STRTOIMAX && !defined strtoimax
 intmax_t strtoimax ();
 #endif
@@ -112,7 +104,7 @@ __xstrtol (const char *s, char **ptr, in
     {
       const char *q = s;
       unsigned char ch = *q;
-      while (ISSPACE (ch))
+      while (isspace (ch))
        ch = *++q;
       if (ch == '-')
        return LONGINT_INVALID;
Index: m4/calloc.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/calloc.m4,v
retrieving revision 1.5
diff -u -p -r1.5 calloc.m4
--- m4/calloc.m4        23 Sep 2005 04:15:13 -0000      1.5
+++ m4/calloc.m4        29 Jun 2006 19:07:40 -0000
@@ -16,8 +16,7 @@
 # -------------------------------------
 # If `calloc (0, 0)' is properly handled, run IF-WORKS, otherwise, IF-NOT.
 AC_DEFUN([_AC_FUNC_CALLOC_IF],
-[AC_REQUIRE([AC_HEADER_STDC])dnl
-AC_REQUIRE([AC_TYPE_SIZE_T])dnl
+[AC_REQUIRE([AC_TYPE_SIZE_T])dnl
 AC_CACHE_CHECK([for GNU libc compatible calloc], ac_cv_func_calloc_0_nonnull,
 [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
                  [exit (!calloc (0, 0) || calloc ((size_t) -1 / 8 + 1, 8));])],
Index: m4/exclude.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/exclude.m4,v
retrieving revision 1.6
diff -u -p -r1.6 exclude.m4
--- m4/exclude.m4       21 Mar 2005 22:06:27 -0000      1.6
+++ m4/exclude.m4       29 Jun 2006 19:07:40 -0000
@@ -11,6 +11,5 @@ AC_DEFUN([gl_EXCLUDE],
 
   dnl Prerequisites of lib/exclude.c.
   AC_REQUIRE([AC_C_INLINE])
-  AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
 ])
Index: m4/getdate.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/getdate.m4,v
retrieving revision 1.8
diff -u -p -r1.8 getdate.m4
--- m4/getdate.m4       22 Sep 2005 23:08:15 -0000      1.8
+++ m4/getdate.m4       29 Jun 2006 19:07:40 -0000
@@ -29,7 +29,6 @@ AC_DEFUN([gl_GETDATE],
   dnl Prerequisites of lib/getdate.y.
   AC_REQUIRE([gl_BISON])
   AC_REQUIRE([gl_C_COMPOUND_LITERALS])
-  AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
   AC_STRUCT_TIMEZONE
   AC_REQUIRE([gl_CLOCK_TIME])
Index: m4/gettext.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/gettext.m4,v
retrieving revision 1.32
diff -u -p -r1.32 gettext.m4
--- m4/gettext.m4       25 Apr 2005 13:23:48 -0000      1.32
+++ m4/gettext.m4       29 Jun 2006 19:07:40 -0000
@@ -365,7 +365,6 @@ AC_DEFUN([AM_INTL_SUBDIR],
   AC_REQUIRE([gt_GLIBC2])dnl
   AC_REQUIRE([AC_PROG_RANLIB])dnl
   AC_REQUIRE([AC_ISC_POSIX])dnl
-  AC_REQUIRE([AC_HEADER_STDC])dnl
   AC_REQUIRE([AC_C_CONST])dnl
   AC_REQUIRE([bh_C_SIGNED])dnl
   AC_REQUIRE([AC_C_INLINE])dnl
Index: m4/getusershell.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/getusershell.m4,v
retrieving revision 1.4
diff -u -p -r1.4 getusershell.m4
--- m4/getusershell.m4  23 Jan 2005 08:06:57 -0000      1.4
+++ m4/getusershell.m4  29 Jun 2006 19:07:40 -0000
@@ -14,6 +14,5 @@ AC_DEFUN([gl_FUNC_GETUSERSHELL],
 
 # Prerequisites of lib/getusershell.c.
 AC_DEFUN([gl_PREREQ_GETUSERSHELL], [
-  AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
 ])
Index: m4/memcasecmp.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/memcasecmp.m4,v
retrieving revision 1.3
diff -u -p -r1.3 memcasecmp.m4
--- m4/memcasecmp.m4    21 Mar 2005 22:06:27 -0000      1.3
+++ m4/memcasecmp.m4    29 Jun 2006 19:07:40 -0000
@@ -10,6 +10,5 @@ AC_DEFUN([gl_MEMCASECMP],
   AC_LIBOBJ([memcasecmp])
 
   dnl Prerequisites of lib/memcasecmp.c.
-  AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
 ])
Index: m4/onceonly.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/onceonly.m4,v
retrieving revision 1.7
diff -u -p -r1.7 onceonly.m4
--- m4/onceonly.m4      19 Apr 2006 11:36:18 -0000      1.7
+++ m4/onceonly.m4      29 Jun 2006 19:07:40 -0000
@@ -8,7 +8,6 @@ dnl This file defines some "once only" v
 dnl   AC_CHECK_HEADERS_ONCE         like  AC_CHECK_HEADERS
 dnl   AC_CHECK_FUNCS_ONCE           like  AC_CHECK_FUNCS
 dnl   AC_CHECK_DECLS_ONCE           like  AC_CHECK_DECLS
-dnl   AC_REQUIRE([AC_HEADER_STDC])  like  AC_HEADER_STDC
 dnl The advantage is that the check for each of the headers/functions/decls
 dnl will be put only once into the 'configure' file. It keeps the size of
 dnl the 'configure' file down, and avoids redundant output when 'configure'
Index: m4/onceonly_2_57.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/onceonly_2_57.m4,v
retrieving revision 1.6
diff -u -p -r1.6 onceonly_2_57.m4
--- m4/onceonly_2_57.m4 10 Aug 2005 12:06:39 -0000      1.6
+++ m4/onceonly_2_57.m4 29 Jun 2006 19:07:40 -0000
@@ -10,7 +10,6 @@ dnl This file defines some "once only" v
 dnl   AC_CHECK_HEADERS_ONCE         like  AC_CHECK_HEADERS
 dnl   AC_CHECK_FUNCS_ONCE           like  AC_CHECK_FUNCS
 dnl   AC_CHECK_DECLS_ONCE           like  AC_CHECK_DECLS
-dnl   AC_REQUIRE([AC_HEADER_STDC])  like  AC_HEADER_STDC
 dnl The advantage is that the check for each of the headers/functions/decls
 dnl will be put only once into the 'configure' file. It keeps the size of
 dnl the 'configure' file down, and avoids redundant output when 'configure'
Index: m4/strtod.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/strtod.m4,v
retrieving revision 1.6
diff -u -p -r1.6 strtod.m4
--- m4/strtod.m4        23 Jan 2005 08:06:57 -0000      1.6
+++ m4/strtod.m4        29 Jun 2006 19:07:40 -0000
@@ -17,6 +17,5 @@ AC_DEFUN([gl_FUNC_STRTOD],
 # Prerequisites of lib/strtod.c.
 # The need for pow() is already handled by AC_FUNC_STRTOD.
 AC_DEFUN([gl_PREREQ_STRTOD], [
-  AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
 ])
Index: m4/strtol.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/strtol.m4,v
retrieving revision 1.3
diff -u -p -r1.3 strtol.m4
--- m4/strtol.m4        23 Jan 2005 08:06:57 -0000      1.3
+++ m4/strtol.m4        29 Jun 2006 19:07:40 -0000
@@ -14,6 +14,5 @@ AC_DEFUN([gl_FUNC_STRTOL],
 
 # Prerequisites of lib/strtol.c.
 AC_DEFUN([gl_PREREQ_STRTOL], [
-  AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
 ])
Index: m4/xstrtol.m4
===================================================================
RCS file: /cvsroot/gnulib/gnulib/m4/xstrtol.m4,v
retrieving revision 1.8
diff -u -p -r1.8 xstrtol.m4
--- m4/xstrtol.m4       21 Mar 2005 22:06:27 -0000      1.8
+++ m4/xstrtol.m4       29 Jun 2006 19:07:40 -0000
@@ -25,7 +25,6 @@ AC_DEFUN([gl_PREREQ_XSTRTOL_H],
 AC_DEFUN([gl_PREREQ_XSTRTOL],
 [
   AC_REQUIRE([gl_PREREQ_XSTRTOL_H])
-  AC_REQUIRE([AC_HEADER_STDC])
   AC_CHECK_FUNCS_ONCE(isascii)
   AC_CHECK_DECLS([strtoimax, strtoumax])
 ])