Updated gnulib.

29 files changed, 285 insertions, 242 deletions

diff --git a/gl/m4/argp.m4 b/gl/m4/argp.m4
index 87c7da68a9..0d1de3abdf 100644
--- a/gl/m4/argp.m4
+++ b/gl/m4/argp.m4
@@ -1,4 +1,4 @@
-# argp.m4 serial 13
+# argp.m4 serial 14
 dnl Copyright (C) 2003-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -10,18 +10,14 @@ AC_DEFUN([gl_ARGP],
   AC_REQUIRE([AC_C_RESTRICT])
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
-  AC_CHECK_DECL([program_invocation_name],
-                [AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_NAME], [1],
-                           [Define if program_invocation_name is declared])],
-                [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_NAME], [1],
-                           [Define to 1 to add extern declaration of program_invocation_name to argp.h])],
-                [[#include <errno.h>]])
-  AC_CHECK_DECL([program_invocation_short_name],
-                [AC_DEFINE([HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME], [1],
-                           [Define if program_invocation_short_name is declared])],
-                [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_SHORT_NAME], [1],
-                           [Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],
-                [[#include <errno.h>]])
+  AC_CHECK_DECLS([program_invocation_name], [],
+                 [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_NAME], [1],
+                            [Define to 1 to add extern declaration of program_invocation_name to argp.h])],
+                 [[#include <errno.h>]])
+  AC_CHECK_DECLS([program_invocation_short_name], [],
+                 [AC_DEFINE([GNULIB_PROGRAM_INVOCATION_SHORT_NAME], [1],
+                            [Define to 1 to add extern declaration of program_invocation_short_name to argp.h])],
+                 [[#include <errno.h>]])
 
   # Check if program_invocation_name and program_invocation_short_name
   # are defined elsewhere. It is improbable that only one of them will
diff --git a/gl/m4/extensions.m4 b/gl/m4/extensions.m4
index 0bfaef6f90..6d17d8a748 100644
--- a/gl/m4/extensions.m4
+++ b/gl/m4/extensions.m4
@@ -1,4 +1,4 @@
-# serial 11  -*- Autoconf -*-
+# serial 12  -*- Autoconf -*-
 # Enable extensions on systems that normally disable them.
 
 # Copyright (C) 2003, 2006-2012 Free Software Foundation, Inc.
@@ -67,7 +67,7 @@ AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
 #ifndef _ALL_SOURCE
 # undef _ALL_SOURCE
 #endif
-/* Enable general extensions on MacOS X.  */
+/* Enable general extensions on Mac OS X.  */
 #ifndef _DARWIN_C_SOURCE
 # undef _DARWIN_C_SOURCE
 #endif
diff --git a/gl/m4/fdopen.m4 b/gl/m4/fdopen.m4
index 9ca9d2aca6..14f15540c7 100644
--- a/gl/m4/fdopen.m4
+++ b/gl/m4/fdopen.m4
@@ -1,4 +1,4 @@
-# fdopen.m4 serial 2
+# fdopen.m4 serial 3
 dnl Copyright (C) 2011-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -25,10 +25,8 @@ main (void)
   FILE *fp;
   errno = 0;
   fp = fdopen (-1, "r");
-  if (fp != NULL)
+  if (fp == NULL && errno == 0)
     return 1;
-  if (errno == 0)
-    return 2;
   return 0;
 }]])],
           [gl_cv_func_fdopen_works=yes],
diff --git a/gl/m4/frexp.m4 b/gl/m4/frexp.m4
index 4162195e53..fb8db7046e 100644
--- a/gl/m4/frexp.m4
+++ b/gl/m4/frexp.m4
@@ -1,4 +1,4 @@
-# frexp.m4 serial 13
+# frexp.m4 serial 14
 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -107,7 +107,7 @@ AC_DEFUN([gl_FUNC_FREXP_WORKS],
 /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
    ICC 10.0 has a bug when optimizing the expression -zero.
    The expression -DBL_MIN * DBL_MIN does not work when cross-compiling
-   to PowerPC on MacOS X 10.5.  */
+   to PowerPC on Mac OS X 10.5.  */
 #if defined __hpux || defined __sgi || defined __ICC
 static double
 compute_minus_zero (void)
diff --git a/gl/m4/frexpl.m4 b/gl/m4/frexpl.m4
index 9df87ab82f..774d540fd9 100644
--- a/gl/m4/frexpl.m4
+++ b/gl/m4/frexpl.m4
@@ -1,4 +1,4 @@
-# frexpl.m4 serial 19
+# frexpl.m4 serial 20
 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -13,7 +13,7 @@ AC_DEFUN([gl_FUNC_FREXPL],
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
   dnl Check whether it's declared.
-  dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+  dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
   AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
 
   FREXPL_LIBM=
@@ -73,7 +73,7 @@ AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM],
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
   AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
   dnl Check whether it's declared.
-  dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+  dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
   AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
   if test $HAVE_DECL_FREXPL = 1; then
     gl_CHECK_FREXPL_NO_LIBM
@@ -113,8 +113,8 @@ AC_DEFUN([gl_CHECK_FREXPL_NO_LIBM],
 ])
 
 dnl Test whether frexpl() works on finite numbers (this fails on
-dnl MacOS X 10.4/PowerPC, on AIX 5.1, and on BeOS), on denormalized numbers
-dnl (this fails on MacOS X 10.5/i386), and also on infinite numbers (this
+dnl Mac OS X 10.4/PowerPC, on AIX 5.1, and on BeOS), on denormalized numbers
+dnl (this fails on Mac OS X 10.5/i386), and also on infinite numbers (this
 dnl fails e.g. on IRIX 6.5 and mingw).
 AC_DEFUN([gl_FUNC_FREXPL_WORKS],
 [
@@ -162,7 +162,7 @@ int main()
     if (exp != 5)
       result |= 1;
   }
-  /* Test on finite numbers that fails on MacOS X 10.4, because its frexpl
+  /* Test on finite numbers that fails on Mac OS X 10.4, because its frexpl
      function returns an invalid (incorrectly normalized) value: it returns
                y = { 0x3fe028f5, 0xc28f5c28, 0x3c9eb851, 0xeb851eb8 }
      but the correct result is
@@ -201,7 +201,7 @@ int main()
         int exp;
         long double y = frexpl (x, &exp);
         /* On machines with IEEE854 arithmetic: x = 1.68105e-4932,
-           exp = -16382, y = 0.5.  On MacOS X 10.5: exp = -16384, y = 0.5.  */
+           exp = -16382, y = 0.5.  On Mac OS X 10.5: exp = -16384, y = 0.5.  */
         if (exp != LDBL_MIN_EXP - 1)
           result |= 8;
       }
diff --git a/gl/m4/fseterr.m4 b/gl/m4/fseterr.m4
new file mode 100644
index 0000000000..3eb3197f84
--- /dev/null
+++ b/gl/m4/fseterr.m4
@@ -0,0 +1,10 @@
+# fseterr.m4 serial 1
+dnl Copyright (C) 2012 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FSETERR],
+[
+  AC_CHECK_FUNCS_ONCE([__fseterr])
+])
diff --git a/gl/m4/getopt.m4 b/gl/m4/getopt.m4
index 2aea89595e..f6902b5859 100644
--- a/gl/m4/getopt.m4
+++ b/gl/m4/getopt.m4
@@ -1,4 +1,4 @@
-# getopt.m4 serial 39
+# getopt.m4 serial 44
 dnl Copyright (C) 2002-2006, 2008-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -9,18 +9,17 @@ AC_DEFUN([gl_FUNC_GETOPT_POSIX],
 [
   m4_divert_text([DEFAULTS], [gl_getopt_required=POSIX])
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
   dnl Other modules can request the gnulib implementation of the getopt
   dnl functions unconditionally, by defining gl_REPLACE_GETOPT_ALWAYS.
   dnl argp.m4 does this.
   m4_ifdef([gl_REPLACE_GETOPT_ALWAYS], [
-    gl_GETOPT_IFELSE([], [])
     REPLACE_GETOPT=1
   ], [
     REPLACE_GETOPT=0
-    gl_GETOPT_IFELSE([
+    if test -n "$gl_replace_getopt"; then
       REPLACE_GETOPT=1
-    ],
-    [])
+    fi
   ])
   if test $REPLACE_GETOPT = 1; then
     dnl Arrange for getopt.h to be created.
@@ -38,13 +37,6 @@ AC_DEFUN([gl_FUNC_GETOPT_GNU],
   AC_REQUIRE([gl_FUNC_GETOPT_POSIX])
 ])
 
-# emacs' configure.in uses this.
-AC_DEFUN([gl_GETOPT_IFELSE],
-[
-  AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
-  AS_IF([test -n "$gl_replace_getopt"], [$1], [$2])
-])
-
 # Determine whether to replace the entire getopt facility.
 AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
 [
@@ -74,11 +66,6 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
     AC_CHECK_FUNCS([getopt_long_only], [], [gl_replace_getopt=yes])
   fi
 
-  dnl mingw's getopt (in libmingwex.a) does weird things when the options
-  dnl strings starts with '+' and it's not the first call.  Some internal state
-  dnl is left over from earlier calls, and neither setting optind = 0 nor
-  dnl setting optreset = 1 get rid of this internal state.
-  dnl POSIX is silent on optind vs. optreset, so we allow either behavior.
   dnl POSIX 2008 does not specify leading '+' behavior, but see
   dnl http://austingroupbugs.net/view.php?id=191 for a recommendation on
   dnl the next version of POSIX.  For now, we only guarantee leading '+'
@@ -87,30 +74,16 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
     AC_CACHE_CHECK([whether getopt is POSIX compatible],
       [gl_cv_func_getopt_posix],
       [
-        dnl BSD getopt_long uses an incompatible method to reset option
-        dnl processing.  Existence of the optreset variable, in and of
-        dnl itself, is not a reason to replace getopt, but knowledge
-        dnl of the variable is needed to determine how to reset and
-        dnl whether a reset reparses the environment.  Solaris
-        dnl supports neither optreset nor optind=0, but keeps no state
-        dnl that needs a reset beyond setting optind=1; detect Solaris
-        dnl by getopt_clip.
-        AC_LINK_IFELSE(
-          [AC_LANG_PROGRAM(
-             [[#include <unistd.h>]],
-             [[int *p = &optreset; return optreset;]])],
-          [gl_optind_min=1],
-          [AC_COMPILE_IFELSE(
-             [AC_LANG_PROGRAM(
-                [[#include <getopt.h>]],
-                [[return !getopt_clip;]])],
-             [gl_optind_min=1],
-             [gl_optind_min=0])])
-
-        dnl This test fails on mingw and succeeds on many other platforms.
-        gl_save_CPPFLAGS=$CPPFLAGS
-        CPPFLAGS="$CPPFLAGS -DOPTIND_MIN=$gl_optind_min"
-        AC_RUN_IFELSE([AC_LANG_SOURCE([[
+        dnl Merging these three different test programs into a single one
+        dnl would require a reset mechanism. On BSD systems, it can be done
+        dnl through 'optreset'; on some others (glibc), it can be done by
+        dnl setting 'optind' to 0; on others again (HP-UX, IRIX, OSF/1,
+        dnl Solaris 9, musl libc), there is no such mechanism.
+        if test $cross_compiling = no; then
+          dnl Sanity check. Succeeds everywhere (except on MSVC,
+          dnl which lacks <unistd.h> and getopt() entirely).
+          AC_RUN_IFELSE(
+            [AC_LANG_SOURCE([[
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
@@ -118,89 +91,107 @@ AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
 int
 main ()
 {
-  {
-    static char program[] = "program";
-    static char a[] = "-a";
-    static char foo[] = "foo";
-    static char bar[] = "bar";
-    char *argv[] = { program, a, foo, bar, NULL };
-    int c;
+  static char program[] = "program";
+  static char a[] = "-a";
+  static char foo[] = "foo";
+  static char bar[] = "bar";
+  char *argv[] = { program, a, foo, bar, NULL };
+  int c;
 
-    optind = OPTIND_MIN;
-    opterr = 0;
-
-    c = getopt (4, argv, "ab");
-    if (!(c == 'a'))
-      return 1;
-    c = getopt (4, argv, "ab");
-    if (!(c == -1))
-      return 2;
-    if (!(optind == 2))
-      return 3;
-  }
-  /* Some internal state exists at this point.  */
-  {
-    static char program[] = "program";
-    static char donald[] = "donald";
-    static char p[] = "-p";
-    static char billy[] = "billy";
-    static char duck[] = "duck";
-    static char a[] = "-a";
-    static char bar[] = "bar";
-    char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
-    int c;
+  c = getopt (4, argv, "ab");
+  if (!(c == 'a'))
+    return 1;
+  c = getopt (4, argv, "ab");
+  if (!(c == -1))
+    return 2;
+  if (!(optind == 2))
+    return 3;
+  return 0;
+}
+]])],
+            [gl_cv_func_getopt_posix=maybe],
+            [gl_cv_func_getopt_posix=no])
+          if test $gl_cv_func_getopt_posix = maybe; then
+            dnl Sanity check with '+'. Succeeds everywhere (except on MSVC,
+            dnl which lacks <unistd.h> and getopt() entirely).
+            AC_RUN_IFELSE(
+              [AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
 
-    optind = OPTIND_MIN;
-    opterr = 0;
+int
+main ()
+{
+  static char program[] = "program";
+  static char donald[] = "donald";
+  static char p[] = "-p";
+  static char billy[] = "billy";
+  static char duck[] = "duck";
+  static char a[] = "-a";
+  static char bar[] = "bar";
+  char *argv[] = { program, donald, p, billy, duck, a, bar, NULL };
+  int c;
 
-    c = getopt (7, argv, "+abp:q:");
-    if (!(c == -1))
-      return 4;
-    if (!(strcmp (argv[0], "program") == 0))
-      return 5;
-    if (!(strcmp (argv[1], "donald") == 0))
-      return 6;
-    if (!(strcmp (argv[2], "-p") == 0))
-      return 7;
-    if (!(strcmp (argv[3], "billy") == 0))
-      return 8;
-    if (!(strcmp (argv[4], "duck") == 0))
-      return 9;
-    if (!(strcmp (argv[5], "-a") == 0))
-      return 10;
-    if (!(strcmp (argv[6], "bar") == 0))
-      return 11;
-    if (!(optind == 1))
-      return 12;
-  }
-  /* Detect MacOS 10.5, AIX 7.1 bug.  */
-  {
-    static char program[] = "program";
-    static char ab[] = "-ab";
-    char *argv[3] = { program, ab, NULL };
-    optind = OPTIND_MIN;
-    opterr = 0;
-    if (getopt (2, argv, "ab:") != 'a')
-      return 13;
-    if (getopt (2, argv, "ab:") != '?')
-      return 14;
-    if (optopt != 'b')
-      return 15;
-    if (optind != 2)
-      return 16;
-  }
+  c = getopt (7, argv, "+abp:q:");
+  if (!(c == -1))
+    return 4;
+  if (!(strcmp (argv[0], "program") == 0))
+    return 5;
+  if (!(strcmp (argv[1], "donald") == 0))
+    return 6;
+  if (!(strcmp (argv[2], "-p") == 0))
+    return 7;
+  if (!(strcmp (argv[3], "billy") == 0))
+    return 8;
+  if (!(strcmp (argv[4], "duck") == 0))
+    return 9;
+  if (!(strcmp (argv[5], "-a") == 0))
+    return 10;
+  if (!(strcmp (argv[6], "bar") == 0))
+    return 11;
+  if (!(optind == 1))
+    return 12;
+  return 0;
+}
+]])],
+              [gl_cv_func_getopt_posix=maybe],
+              [gl_cv_func_getopt_posix=no])
+          fi
+          if test $gl_cv_func_getopt_posix = maybe; then
+            dnl Detect Mac OS X 10.5, AIX 7.1, mingw bug.
+            AC_RUN_IFELSE(
+              [AC_LANG_SOURCE([[
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
 
+int
+main ()
+{
+  static char program[] = "program";
+  static char ab[] = "-ab";
+  char *argv[3] = { program, ab, NULL };
+  if (getopt (2, argv, "ab:") != 'a')
+    return 13;
+  if (getopt (2, argv, "ab:") != '?')
+    return 14;
+  if (optopt != 'b')
+    return 15;
+  if (optind != 2)
+    return 16;
   return 0;
 }
 ]])],
-          [gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no],
-          [case "$host_os" in
-             mingw*)         gl_cv_func_getopt_posix="guessing no";;
-             darwin* | aix*) gl_cv_func_getopt_posix="guessing no";;
-             *)              gl_cv_func_getopt_posix="guessing yes";;
-           esac
-          ])
-        CPPFLAGS=$gl_save_CPPFLAGS
+              [gl_cv_func_getopt_posix=yes],
+              [gl_cv_func_getopt_posix=no])
+          fi
+        else
+          case "$host_os" in
+            darwin* | aix* | mingw*) gl_cv_func_getopt_posix="guessing no";;
+            *)                       gl_cv_func_getopt_posix="guessing yes";;
+          esac
+        fi
       ])
     case "$gl_cv_func_getopt_posix" in
       *no) gl_replace_getopt=yes ;;
@@ -236,7 +227,7 @@ dnl is ambiguous with environment values that contain newlines.
              nocrash_init();
 
              /* This code succeeds on glibc 2.8, OpenBSD 4.0, Cygwin, mingw,
-                and fails on MacOS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5,
+                and fails on Mac OS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5,
                 OSF/1 5.1, Solaris 10.  */
              {
                static char conftest[] = "conftest";
@@ -247,7 +238,7 @@ dnl is ambiguous with environment values that contain newlines.
                  result |= 1;
              }
              /* This code succeeds on glibc 2.8, mingw,
-                and fails on MacOS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11,
+                and fails on Mac OS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11,
                 IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin 1.5.x.  */
              {
                static char program[] = "program";
@@ -276,7 +267,7 @@ dnl is ambiguous with environment values that contain newlines.
                if (getopt (3, argv, "-p") != 1)
                  result |= 16;
                else if (getopt (3, argv, "-p") != 'p')
-                 result |= 32;
+                 result |= 16;
              }
              /* This code fails on glibc 2.11.  */
              {
@@ -286,9 +277,9 @@ dnl is ambiguous with environment values that contain newlines.
                char *argv[] = { program, b, a, NULL };
                optind = opterr = 0;
                if (getopt (3, argv, "+:a:b") != 'b')
-                 result |= 64;
+                 result |= 32;
                else if (getopt (3, argv, "+:a:b") != ':')
-                 result |= 64;
+                 result |= 32;
              }
              /* This code dumps core on glibc 2.14.  */
              {
@@ -298,18 +289,14 @@ dnl is ambiguous with environment values that contain newlines.
                char *argv[] = { program, w, dummy, NULL };
                optind = opterr = 1;
                if (getopt (3, argv, "W;") != 'W')
-                 result |= 128;
+                 result |= 64;
              }
              return result;
            ]])],
         [gl_cv_func_getopt_gnu=yes],
         [gl_cv_func_getopt_gnu=no],
-        [dnl Cross compiling. Guess based on host and declarations.
-         case $host_os:$ac_cv_have_decl_optreset in
-           *-gnu*:* | mingw*:*) gl_cv_func_getopt_gnu=no;;
-           *:yes)               gl_cv_func_getopt_gnu=no;;
-           *)                   gl_cv_func_getopt_gnu=yes;;
-         esac
+        [dnl Cross compiling. Assume the worst, even on glibc platforms.
+         gl_cv_func_getopt_gnu="guessing no"
         ])
        case $gl_had_POSIXLY_CORRECT in
          exported) ;;
@@ -317,13 +304,54 @@ dnl is ambiguous with environment values that contain newlines.
          *) AS_UNSET([POSIXLY_CORRECT]) ;;
        esac
       ])
-    if test "$gl_cv_func_getopt_gnu" = "no"; then
+    if test "$gl_cv_func_getopt_gnu" != yes; then
       gl_replace_getopt=yes
+    else
+      AC_CACHE_CHECK([for working GNU getopt_long function],
+        [gl_cv_func_getopt_long_gnu],
+        [AC_RUN_IFELSE(
+           [AC_LANG_PROGRAM(
+              [[#include <getopt.h>
+                #include <stddef.h>
+                #include <string.h>
+              ]],
+              [[static const struct option long_options[] =
+                  {
+                    { "xtremely-",no_argument,       NULL, 1003 },
+                    { "xtra",     no_argument,       NULL, 1001 },
+                    { "xtreme",   no_argument,       NULL, 1002 },
+                    { "xtremely", no_argument,       NULL, 1003 },
+                    { NULL,       0,                 NULL, 0 }
+                  };
+                /* This code fails on OpenBSD 5.0.  */
+                {
+                  static char program[] = "program";
+                  static char xtremel[] = "--xtremel";
+                  char *argv[] = { program, xtremel, NULL };
+                  int option_index;
+                  optind = 1; opterr = 0;
+                  if (getopt_long (2, argv, "", long_options, &option_index) != 1003)
+                    return 1;
+                }
+                return 0;
+              ]])],
+           [gl_cv_func_getopt_long_gnu=yes],
+           [gl_cv_func_getopt_long_gnu=no],
+           [dnl Cross compiling. Guess no on OpenBSD, yes otherwise.
+            case "$host_os" in
+              openbsd*) gl_cv_func_getopt_long_gnu="guessing no";;
+              *)        gl_cv_func_getopt_long_gnu="guessing yes";;
+            esac
+           ])
+        ])
+      case "$gl_cv_func_getopt_long_gnu" in
+        *yes) ;;
+        *) gl_replace_getopt=yes ;;
+      esac
     fi
   fi
 ])
 
-# emacs' configure.in uses this.
 AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
 [
   GETOPT_H=getopt.h
@@ -334,7 +362,6 @@ AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
 ])
 
 # Prerequisites of lib/getopt*.
-# emacs' configure.in uses this.
 AC_DEFUN([gl_PREREQ_GETOPT],
 [
   AC_CHECK_DECLS_ONCE([getenv])
diff --git a/gl/m4/gettext.m4 b/gl/m4/gettext.m4
index 5415f88ef0..017d025201 100644
--- a/gl/m4/gettext.m4
+++ b/gl/m4/gettext.m4
@@ -1,4 +1,4 @@
-# gettext.m4 serial 64 (gettext-0.18.2)
+# gettext.m4 serial 66 (gettext-0.18.2)
 dnl Copyright (C) 1995-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -97,7 +97,7 @@ AC_DEFUN([AM_GNU_GETTEXT],
     AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
   ])
 
-  dnl Sometimes, on MacOS X, libintl requires linking with CoreFoundation.
+  dnl Sometimes, on Mac OS X, libintl requires linking with CoreFoundation.
   gt_INTL_MACOSX
 
   dnl Set USE_NLS.
diff --git a/gl/m4/gnulib-common.m4 b/gl/m4/gnulib-common.m4
index d62b7677ab..15d2b2b3de 100644
--- a/gl/m4/gnulib-common.m4
+++ b/gl/m4/gnulib-common.m4
@@ -1,4 +1,4 @@
-# gnulib-common.m4 serial 32
+# gnulib-common.m4 serial 33
 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -30,7 +30,7 @@ AC_DEFUN([gl_COMMON_BODY], [
 [/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
    the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
    earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
-   __APPLE__ && __MACH__ test for MacOS X.
+   __APPLE__ && __MACH__ test for Mac OS X.
    __APPLE_CC__ tests for the Apple compiler and its version.
    __STDC_VERSION__ tests for the C99 mode.  */
 #if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
diff --git a/gl/m4/gnulib-comp.m4 b/gl/m4/gnulib-comp.m4
index 4d134505cb..aad1024c14 100644
--- a/gl/m4/gnulib-comp.m4
+++ b/gl/m4/gnulib-comp.m4
@@ -450,6 +450,10 @@ if test $HAVE_FSEEKO = 0 || test $REPLACE_FSEEKO = 1; then
   gl_PREREQ_FSEEKO
 fi
 gl_STDIO_MODULE_INDICATOR([fseeko])
+gl_FUNC_FSETERR
+if test $ac_cv_func___fseterr = no; then
+  AC_LIBOBJ([fseterr])
+fi
 gl_FUNC_FSTAT
 if test $REPLACE_FSTAT = 1; then
   AC_LIBOBJ([fstat])
@@ -1333,6 +1337,7 @@ AC_DEFUN([gl_FILE_LIST], [
   m4/frexpl.m4
   m4/fseek.m4
   m4/fseeko.m4
+  m4/fseterr.m4
   m4/fstat.m4
   m4/ftell.m4
   m4/ftello.m4
diff --git a/gl/m4/intdiv0.m4 b/gl/m4/intdiv0.m4
index 6d89aebed4..55bef60505 100644
--- a/gl/m4/intdiv0.m4
+++ b/gl/m4/intdiv0.m4
@@ -1,4 +1,4 @@
-# intdiv0.m4 serial 5 (gettext-0.18.2)
+# intdiv0.m4 serial 6 (gettext-0.18.2)
 dnl Copyright (C) 2002, 2007-2008, 2010-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -18,7 +18,7 @@ AC_DEFUN([gt_INTDIV0],
 changequote(,)dnl
       case "$host_os" in
         macos* | darwin[6-9]* | darwin[1-9][0-9]*)
-          # On MacOS X 10.2 or newer, just assume the same as when cross-
+          # On Mac OS X 10.2 or newer, just assume the same as when cross-
           # compiling. If we were to perform the real test, 1 Crash Report
           # dialog window would pop up.
           case "$host_cpu" in
diff --git a/gl/m4/intlmacosx.m4 b/gl/m4/intlmacosx.m4
index dc2ddfedfc..d4da19040f 100644
--- a/gl/m4/intlmacosx.m4
+++ b/gl/m4/intlmacosx.m4
@@ -1,4 +1,4 @@
-# intlmacosx.m4 serial 4 (gettext-0.18.2)
+# intlmacosx.m4 serial 5 (gettext-0.18.2)
 dnl Copyright (C) 2004-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -13,11 +13,11 @@ dnl by the GNU Library General Public License, and the rest of the GNU
 dnl gettext package package is covered by the GNU General Public License.
 dnl They are *not* in the public domain.
 
-dnl Checks for special options needed on MacOS X.
+dnl Checks for special options needed on Mac OS X.
 dnl Defines INTL_MACOSX_LIBS.
 AC_DEFUN([gt_INTL_MACOSX],
 [
-  dnl Check for API introduced in MacOS X 10.2.
+  dnl Check for API introduced in Mac OS X 10.2.
   AC_CACHE_CHECK([for CFPreferencesCopyAppValue],
     [gt_cv_func_CFPreferencesCopyAppValue],
     [gt_save_LIBS="$LIBS"
@@ -31,9 +31,9 @@ AC_DEFUN([gt_INTL_MACOSX],
      LIBS="$gt_save_LIBS"])
   if test $gt_cv_func_CFPreferencesCopyAppValue = yes; then
     AC_DEFINE([HAVE_CFPREFERENCESCOPYAPPVALUE], [1],
-      [Define to 1 if you have the MacOS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
+      [Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in the CoreFoundation framework.])
   fi
-  dnl Check for API introduced in MacOS X 10.3.
+  dnl Check for API introduced in Mac OS X 10.3.
   AC_CACHE_CHECK([for CFLocaleCopyCurrent], [gt_cv_func_CFLocaleCopyCurrent],
     [gt_save_LIBS="$LIBS"
      LIBS="$LIBS -Wl,-framework -Wl,CoreFoundation"
@@ -46,7 +46,7 @@ AC_DEFUN([gt_INTL_MACOSX],
      LIBS="$gt_save_LIBS"])
   if test $gt_cv_func_CFLocaleCopyCurrent = yes; then
     AC_DEFINE([HAVE_CFLOCALECOPYCURRENT], [1],
-      [Define to 1 if you have the MacOS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
+      [Define to 1 if you have the Mac OS X function CFLocaleCopyCurrent in the CoreFoundation framework.])
   fi
   INTL_MACOSX_LIBS=
   if test $gt_cv_func_CFPreferencesCopyAppValue = yes || test $gt_cv_func_CFLocaleCopyCurrent = yes; then
diff --git a/gl/m4/largefile.m4 b/gl/m4/largefile.m4
index a159f4ab2c..a88850afed 100644
--- a/gl/m4/largefile.m4
+++ b/gl/m4/largefile.m4
@@ -136,7 +136,7 @@ AC_DEFUN([gl_LARGEFILE],
     *)
       dnl Nothing to do on gnulib's side.
       dnl A 64-bit off_t is
-      dnl   - already the default on MacOS X, FreeBSD, NetBSD, OpenBSD, IRIX,
+      dnl   - already the default on Mac OS X, FreeBSD, NetBSD, OpenBSD, IRIX,
       dnl     OSF/1, Cygwin,
       dnl   - enabled by _FILE_OFFSET_BITS=64 (ensured by AC_SYS_LARGEFILE) on
       dnl     glibc, HP-UX, Solaris,
diff --git a/gl/m4/ldexpl.m4 b/gl/m4/ldexpl.m4
index 11f20ca2a8..6ecdd4f76a 100644
--- a/gl/m4/ldexpl.m4
+++ b/gl/m4/ldexpl.m4
@@ -1,4 +1,4 @@
-# ldexpl.m4 serial 15
+# ldexpl.m4 serial 16
 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -14,7 +14,7 @@ AC_DEFUN([gl_FUNC_LDEXPL],
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
   dnl Check whether it's declared.
-  dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
+  dnl Mac OS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
   AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [[#include <math.h>]])
 
   LDEXPL_LIBM=
@@ -87,7 +87,7 @@ AC_DEFUN([gl_CHECK_LDEXPL_NO_LIBM],
 ])
 
 dnl Test whether ldexpl() works on finite numbers (this fails on AIX 5.1
-dnl and MacOS X 10.4/PowerPC).
+dnl and Mac OS X 10.4/PowerPC).
 AC_DEFUN([gl_FUNC_LDEXPL_WORKS],
 [
   AC_REQUIRE([AC_PROG_CC])
diff --git a/gl/m4/lock.m4 b/gl/m4/lock.m4
index c0a620600a..19c6d459f1 100644
--- a/gl/m4/lock.m4
+++ b/gl/m4/lock.m4
@@ -1,4 +1,4 @@
-# lock.m4 serial 11 (gettext-0.18.2)
+# lock.m4 serial 12 (gettext-0.18.2)
 dnl Copyright (C) 2005-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -10,7 +10,7 @@ AC_DEFUN([gl_LOCK],
 [
   AC_REQUIRE([gl_THREADLIB])
   if test "$gl_threads_api" = posix; then
-    # OSF/1 4.0 and MacOS X 10.1 lack the pthread_rwlock_t type and the
+    # OSF/1 4.0 and Mac OS X 10.1 lack the pthread_rwlock_t type and the
     # pthread_rwlock_* functions.
     AC_CHECK_TYPE([pthread_rwlock_t],
       [AC_DEFINE([HAVE_PTHREAD_RWLOCK], [1],
diff --git a/gl/m4/mmap-anon.m4 b/gl/m4/mmap-anon.m4
index 579323f15a..748b17d97a 100644
--- a/gl/m4/mmap-anon.m4
+++ b/gl/m4/mmap-anon.m4
@@ -1,4 +1,4 @@
-# mmap-anon.m4 serial 9
+# mmap-anon.m4 serial 10
 dnl Copyright (C) 2005, 2007, 2009-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -9,7 +9,7 @@ dnl with or without modifications, as long as this notice is preserved.
 # - On Linux, AIX, OSF/1, Solaris, Cygwin, Interix, Haiku, both MAP_ANONYMOUS
 #   and MAP_ANON exist and have the same value.
 # - On HP-UX, only MAP_ANONYMOUS exists.
-# - On MacOS X, FreeBSD, NetBSD, OpenBSD, only MAP_ANON exists.
+# - On Mac OS X, FreeBSD, NetBSD, OpenBSD, only MAP_ANON exists.
 # - On IRIX, neither exists, and a file descriptor opened to /dev/zero must be
 #   used.
 
diff --git a/gl/m4/multiarch.m4 b/gl/m4/multiarch.m4
index b424dce652..0c288b8d2a 100644
--- a/gl/m4/multiarch.m4
+++ b/gl/m4/multiarch.m4
@@ -1,4 +1,4 @@
-# multiarch.m4 serial 6
+# multiarch.m4 serial 7
 dnl Copyright (C) 2008-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -6,7 +6,7 @@ dnl with or without modifications, as long as this notice is preserved.
 
 # Determine whether the compiler is or may be producing universal binaries.
 #
-# On MacOS X 10.5 and later systems, the user can create libraries and
+# On Mac OS X 10.5 and later systems, the user can create libraries and
 # executables that work on multiple system types--known as "fat" or
 # "universal" binaries--by specifying multiple '-arch' options to the
 # compiler but only a single '-arch' option to the preprocessor.  Like
diff --git a/gl/m4/nocrash.m4 b/gl/m4/nocrash.m4
index 08ef825499..c2638df626 100644
--- a/gl/m4/nocrash.m4
+++ b/gl/m4/nocrash.m4
@@ -1,4 +1,4 @@
-# nocrash.m4 serial 3
+# nocrash.m4 serial 4
 dnl Copyright (C) 2005, 2009-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -18,7 +18,7 @@ dnl          int main() { nocrash_init(); ... }
 AC_DEFUN([GL_NOCRASH],[[
 #include <stdlib.h>
 #if defined __MACH__ && defined __APPLE__
-/* Avoid a crash on MacOS X.  */
+/* Avoid a crash on Mac OS X.  */
 #include <mach/mach.h>
 #include <mach/mach_error.h>
 #include <mach/thread_status.h>
diff --git a/gl/m4/printf-frexpl.m4 b/gl/m4/printf-frexpl.m4
index 55dd6bc18e..c960a49c60 100644
--- a/gl/m4/printf-frexpl.m4
+++ b/gl/m4/printf-frexpl.m4
@@ -1,4 +1,4 @@
-# printf-frexpl.m4 serial 9
+# printf-frexpl.m4 serial 10
 dnl Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -28,7 +28,7 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
     AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1],
       [Define if the frexpl function is available in libc.])
     dnl Also check whether it's declared.
-    dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+    dnl Mac OS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
     AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [[#include <math.h>]])
   fi
 
@@ -40,7 +40,7 @@ AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
         AC_DEFINE([HAVE_LDEXPL_IN_LIBC], [1],
           [Define if the ldexpl function is available in libc.])
         dnl Also check whether it's declared.
-        dnl MacOS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
+        dnl Mac OS X 10.3 has ldexpl() in libc but doesn't declare it in <math.h>.
         AC_CHECK_DECL([ldexpl], , [HAVE_DECL_LDEXPL=0], [[#include <math.h>]])
         ;;
     esac
diff --git a/gl/m4/printf.m4 b/gl/m4/printf.m4
index d75aca0742..751e8966fd 100644
--- a/gl/m4/printf.m4
+++ b/gl/m4/printf.m4
@@ -1,4 +1,4 @@
-# printf.m4 serial 48
+# printf.m4 serial 50
 dnl Copyright (C) 2003, 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -63,7 +63,7 @@ changequote(,)dnl
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4]*)        gl_cv_func_printf_sizes_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";;
-                                 # Guess yes on MacOS X >= 10.3.
+                                 # Guess yes on Mac OS X >= 10.3.
            darwin[1-6].*)        gl_cv_func_printf_sizes_c99="guessing no";;
            darwin*)              gl_cv_func_printf_sizes_c99="guessing yes";;
                                  # Guess yes on OpenBSD >= 3.9.
@@ -222,7 +222,7 @@ changequote(,)dnl
                                  # Guess yes on FreeBSD >= 6.
            freebsd[1-5]*)        gl_cv_func_printf_infinite="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";;
-                                 # Guess yes on MacOS X >= 10.3.
+                                 # Guess yes on Mac OS X >= 10.3.
            darwin[1-6].*)        gl_cv_func_printf_infinite="guessing no";;
            darwin*)              gl_cv_func_printf_infinite="guessing yes";;
                                  # Guess yes on HP-UX >= 11.
@@ -507,14 +507,14 @@ int main ()
   if (sprintf (buf, "%010a %d", 1.0 / zero, 33, 44, 55) < 0
       || buf[0] == '0')
     result |= 8;
-  /* This catches a MacOS X 10.3.9 (Darwin 7.9) bug.  */
+  /* This catches a Mac OS X 10.3.9 (Darwin 7.9) bug.  */
   if (sprintf (buf, "%.1a", 1.999) < 0
       || (strcmp (buf, "0x1.0p+1") != 0
           && strcmp (buf, "0x2.0p+0") != 0
           && strcmp (buf, "0x4.0p-1") != 0
           && strcmp (buf, "0x8.0p-2") != 0))
     result |= 16;
-  /* This catches the same MacOS X 10.3.9 (Darwin 7.9) bug and also a
+  /* This catches the same Mac OS X 10.3.9 (Darwin 7.9) bug and also a
      glibc 2.4 bug <http://sourceware.org/bugzilla/show_bug.cgi?id=2908>.  */
   if (sprintf (buf, "%.1La", 1.999L) < 0
       || (strcmp (buf, "0x1.0p+1") != 0
@@ -590,7 +590,7 @@ changequote(,)dnl
                                  # Guess yes on FreeBSD >= 6.
            freebsd[1-5]*)        gl_cv_func_printf_directive_f="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";;
-                                 # Guess yes on MacOS X >= 10.3.
+                                 # Guess yes on Mac OS X >= 10.3.
            darwin[1-6].*)        gl_cv_func_printf_directive_f="guessing no";;
            darwin*)              gl_cv_func_printf_directive_f="guessing yes";;
                                  # Guess yes on Solaris >= 2.10.
@@ -1028,8 +1028,9 @@ int main()
 changequote([,])dnl
           ])])
           if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
-            (./conftest
+            (./conftest 2>&AS_MESSAGE_LOG_FD
              result=$?
+             _AS_ECHO_LOG([\$? = $result])
              if test $result != 0 && test $result != 77; then result=1; fi
              exit $result
             ) >/dev/null 2>/dev/null
@@ -1043,7 +1044,7 @@ changequote([,])dnl
           fi
           rm -fr conftest*
         else
-          dnl A universal build on Apple MacOS X platforms.
+          dnl A universal build on Apple Mac OS X platforms.
           dnl The result would be 'no' in 32-bit mode and 'yes' in 64-bit mode.
           dnl But we need a configuration result that is valid in both modes.
           gl_cv_func_printf_enomem="guessing no"
@@ -1137,7 +1138,7 @@ changequote(,)dnl
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4]*)        gl_cv_func_snprintf_truncation_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";;
-                                 # Guess yes on MacOS X >= 10.3.
+                                 # Guess yes on Mac OS X >= 10.3.
            darwin[1-6].*)        gl_cv_func_snprintf_truncation_c99="guessing no";;
            darwin*)              gl_cv_func_snprintf_truncation_c99="guessing yes";;
                                  # Guess yes on OpenBSD >= 3.9.
@@ -1236,7 +1237,7 @@ changequote(,)dnl
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4]*)        gl_cv_func_snprintf_retval_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";;
-                                 # Guess yes on MacOS X >= 10.3.
+                                 # Guess yes on Mac OS X >= 10.3.
            darwin[1-6].*)        gl_cv_func_snprintf_retval_c99="guessing no";;
            darwin*)              gl_cv_func_snprintf_retval_c99="guessing yes";;
                                  # Guess yes on OpenBSD >= 3.9.
@@ -1317,7 +1318,7 @@ changequote(,)dnl
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4]*)        gl_cv_func_snprintf_directive_n="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_snprintf_directive_n="guessing yes";;
-                                 # Guess yes on MacOS X >= 10.3.
+                                 # Guess yes on Mac OS X >= 10.3.
            darwin[1-6].*)        gl_cv_func_snprintf_directive_n="guessing no";;
            darwin*)              gl_cv_func_snprintf_directive_n="guessing yes";;
                                  # Guess yes on Solaris >= 2.6.
@@ -1459,7 +1460,7 @@ changequote(,)dnl
                                  # Guess yes on FreeBSD >= 5.
            freebsd[1-4]*)        gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
            freebsd* | kfreebsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
-                                 # Guess yes on MacOS X >= 10.3.
+                                 # Guess yes on Mac OS X >= 10.3.
            darwin[1-6].*)        gl_cv_func_vsnprintf_zerosize_c99="guessing no";;
            darwin*)              gl_cv_func_vsnprintf_zerosize_c99="guessing yes";;
                                  # Guess yes on Cygwin.
@@ -1539,8 +1540,8 @@ dnl                                  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
 dnl   glibc 2.5                      .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
 dnl   glibc 2.3.6                    .  .  .  .  #  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
 dnl   FreeBSD 5.4, 6.1               .  .  .  .  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
-dnl   MacOS X 10.5.8                 .  .  .  #  #  .  .  .  .  .  .  #  .  .  .  .  .  .  .  .
-dnl   MacOS X 10.3.9                 .  .  .  .  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
+dnl   Mac OS X 10.5.8                .  .  .  #  #  .  .  .  .  .  .  #  .  .  .  .  .  .  .  .
+dnl   Mac OS X 10.3.9                .  .  .  .  #  .  .  .  .  .  .  #  .  #  .  .  .  .  .  .
 dnl   OpenBSD 3.9, 4.0               .  .  #  #  #  #  .  #  .  #  .  #  .  #  .  .  .  .  .  .
 dnl   Cygwin 1.7.0 (2009)            .  .  .  #  .  .  .  ?  .  .  .  .  .  ?  .  .  .  .  .  .
 dnl   Cygwin 1.5.25 (2008)           .  .  .  #  #  .  .  #  .  .  .  .  .  #  .  .  .  .  .  .
diff --git a/gl/m4/signbit.m4 b/gl/m4/signbit.m4
index e9877f68f5..fb707c9074 100644
--- a/gl/m4/signbit.m4
+++ b/gl/m4/signbit.m4
@@ -1,4 +1,4 @@
-# signbit.m4 serial 12
+# signbit.m4 serial 13
 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -170,7 +170,7 @@ double m0d = -p0d;
 /* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
    So we use another constant expression instead.
    But that expression does not work on other platforms, such as when
-   cross-compiling to PowerPC on MacOS X 10.5.  */
+   cross-compiling to PowerPC on Mac OS X 10.5.  */
 long double p0l = 0.0L;
 #if defined __hpux || defined __sgi
 long double m0l = -LDBL_MIN * LDBL_MIN;
diff --git a/gl/m4/stdio_h.m4 b/gl/m4/stdio_h.m4
index b03393b957..5298dd6d9d 100644
--- a/gl/m4/stdio_h.m4
+++ b/gl/m4/stdio_h.m4
@@ -1,4 +1,4 @@
-# stdio_h.m4 serial 41
+# stdio_h.m4 serial 42
 dnl Copyright (C) 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -13,7 +13,9 @@ AC_DEFUN([gl_STDIO_H],
   dnl No need to create extra modules for these functions. Everyone who uses
   dnl <stdio.h> likely needs them.
   GNULIB_FSCANF=1
+  gl_MODULE_INDICATOR([fscanf])
   GNULIB_SCANF=1
+  gl_MODULE_INDICATOR([scanf])
   GNULIB_FGETC=1
   GNULIB_GETC=1
   GNULIB_GETCHAR=1
diff --git a/gl/m4/strerror_r.m4 b/gl/m4/strerror_r.m4
index 5bdf0abe73..bb035ebcaf 100644
--- a/gl/m4/strerror_r.m4
+++ b/gl/m4/strerror_r.m4
@@ -1,4 +1,4 @@
-# strerror_r.m4 serial 14
+# strerror_r.m4 serial 15
 dnl Copyright (C) 2002, 2007-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -76,7 +76,7 @@ AC_DEFUN([gl_FUNC_STRERROR_R_WORKS],
         dnl HP-UX 11.31 strerror_r always fails when the buffer length argument
         dnl is less than 80.
         dnl FreeBSD 8.s strerror_r claims failure on 0
-        dnl MacOS X 10.5 strerror_r treats 0 like -1
+        dnl Mac OS X 10.5 strerror_r treats 0 like -1
         dnl Solaris 10 strerror_r corrupts errno on failure
         AC_CACHE_CHECK([whether strerror_r works],
           [gl_cv_func_strerror_r_works],
diff --git a/gl/m4/strndup.m4 b/gl/m4/strndup.m4
index bdde5fe1d2..cef68892a8 100644
--- a/gl/m4/strndup.m4
+++ b/gl/m4/strndup.m4
@@ -1,4 +1,4 @@
-# strndup.m4 serial 20
+# strndup.m4 serial 21
 dnl Copyright (C) 2002-2003, 2005-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -24,7 +24,7 @@ AC_DEFUN([gl_FUNC_STRNDUP],
       [AC_RUN_IFELSE([
          AC_LANG_PROGRAM([[#include <string.h>
                            #include <stdlib.h>]], [[
-#ifndef HAVE_DECL_STRNDUP
+#if !HAVE_DECL_STRNDUP
   extern
   #ifdef __cplusplus
   "C"
diff --git a/gl/m4/sys_time_h.m4 b/gl/m4/sys_time_h.m4
index 26eaf8ea7f..c4a30cda77 100644
--- a/gl/m4/sys_time_h.m4
+++ b/gl/m4/sys_time_h.m4
@@ -52,7 +52,9 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY],
     dnl (in <sys/time.h> and <winsock2.h> for mingw64, in <winsock2.h> only
     dnl for MSVC) with a tv_sec field of type 'long' (32-bit!), which is
     dnl smaller than the 'time_t' type mandated by POSIX.
-    AC_CACHE_CHECK([for correct struct timeval.tv_sec member],
+    dnl On OpenBSD 5.1 amd64, tv_sec is 64 bits and time_t 32 bits, but
+    dnl that is good enough.
+    AC_CACHE_CHECK([for wide-enough struct timeval.tv_sec member],
       [gl_cv_sys_struct_timeval_tv_sec],
       [AC_COMPILE_IFELSE(
          [AC_LANG_PROGRAM(
@@ -65,7 +67,9 @@ AC_DEFUN([gl_HEADER_SYS_TIME_H_BODY],
               #endif
             ]],
             [[static struct timeval x;
-              typedef int verify_tv_sec_type[sizeof (x.tv_sec) == sizeof (time_t) ? 1 : -1];
+              typedef int verify_tv_sec_type[
+                sizeof (time_t) <= sizeof x.tv_sec ? 1 : -1
+              ];
             ]])],
          [gl_cv_sys_struct_timeval_tv_sec=yes],
          [gl_cv_sys_struct_timeval_tv_sec=no])
diff --git a/gl/m4/threadlib.m4 b/gl/m4/threadlib.m4
index 9cedb67006..cb93391900 100644
--- a/gl/m4/threadlib.m4
+++ b/gl/m4/threadlib.m4
@@ -1,4 +1,4 @@
-# threadlib.m4 serial 9 (gettext-0.18.2)
+# threadlib.m4 serial 10 (gettext-0.18.2)
 dnl Copyright (C) 2005-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -319,50 +319,50 @@ AC_DEFUN([gl_DISABLE_THREADS], [
 
 dnl Survey of platforms:
 dnl
-dnl Platform          Available   Compiler    Supports   test-lock
-dnl                   flavours    option      weak       result
-dnl ---------------   ---------   ---------   --------   ---------
-dnl Linux 2.4/glibc   posix       -lpthread       Y      OK
+dnl Platform           Available  Compiler    Supports   test-lock
+dnl                    flavours   option      weak       result
+dnl ---------------    ---------  ---------   --------   ---------
+dnl Linux 2.4/glibc    posix      -lpthread       Y      OK
 dnl
-dnl GNU Hurd/glibc    posix
+dnl GNU Hurd/glibc     posix
 dnl
-dnl FreeBSD 5.3       posix       -lc_r           Y
-dnl                   posix       -lkse ?         Y
-dnl                   posix       -lpthread ?     Y
-dnl                   posix       -lthr           Y
+dnl FreeBSD 5.3        posix      -lc_r           Y
+dnl                    posix      -lkse ?         Y
+dnl                    posix      -lpthread ?     Y
+dnl                    posix      -lthr           Y
 dnl
-dnl FreeBSD 5.2       posix       -lc_r           Y
-dnl                   posix       -lkse           Y
-dnl                   posix       -lthr           Y
+dnl FreeBSD 5.2        posix      -lc_r           Y
+dnl                    posix      -lkse           Y
+dnl                    posix      -lthr           Y
 dnl
-dnl FreeBSD 4.0,4.10  posix       -lc_r           Y      OK
+dnl FreeBSD 4.0,4.10   posix      -lc_r           Y      OK
 dnl
-dnl NetBSD 1.6        --
+dnl NetBSD 1.6         --
 dnl
-dnl OpenBSD 3.4       posix       -lpthread       Y      OK
+dnl OpenBSD 3.4        posix      -lpthread       Y      OK
 dnl
-dnl MacOS X 10.[123]  posix       -lpthread       Y      OK
+dnl Mac OS X 10.[123]  posix      -lpthread       Y      OK
 dnl
-dnl Solaris 7,8,9     posix       -lpthread       Y      Sol 7,8: 0.0; Sol 9: OK
-dnl                   solaris     -lthread        Y      Sol 7,8: 0.0; Sol 9: OK
+dnl Solaris 7,8,9      posix      -lpthread       Y      Sol 7,8: 0.0; Sol 9: OK
+dnl                    solaris    -lthread        Y      Sol 7,8: 0.0; Sol 9: OK
 dnl
-dnl HP-UX 11          posix       -lpthread       N (cc) OK
+dnl HP-UX 11           posix      -lpthread       N (cc) OK
 dnl                                               Y (gcc)
 dnl
-dnl IRIX 6.5          posix       -lpthread       Y      0.5
+dnl IRIX 6.5           posix      -lpthread       Y      0.5
 dnl
-dnl AIX 4.3,5.1       posix       -lpthread       N      AIX 4: 0.5; AIX 5: OK
+dnl AIX 4.3,5.1        posix      -lpthread       N      AIX 4: 0.5; AIX 5: OK
 dnl
-dnl OSF/1 4.0,5.1     posix       -pthread (cc)   N      OK
+dnl OSF/1 4.0,5.1      posix      -pthread (cc)   N      OK
 dnl                               -lpthread (gcc) Y
 dnl
-dnl Cygwin            posix       -lpthread       Y      OK
+dnl Cygwin             posix      -lpthread       Y      OK
 dnl
-dnl Any of the above  pth         -lpth                  0.0
+dnl Any of the above   pth        -lpth                  0.0
 dnl
-dnl Mingw             windows                     N      OK
+dnl Mingw              windows                    N      OK
 dnl
-dnl BeOS 5            --
+dnl BeOS 5             --
 dnl
 dnl The test-lock result shows what happens if in test-lock.c EXPLICIT_YIELD is
 dnl turned off:
diff --git a/gl/m4/time_h.m4 b/gl/m4/time_h.m4
index b88da76463..6415bfbcb7 100644
--- a/gl/m4/time_h.m4
+++ b/gl/m4/time_h.m4
@@ -2,7 +2,7 @@
 
 # Copyright (C) 2000-2001, 2003-2007, 2009-2012 Free Software Foundation, Inc.
 
-# serial 6
+# serial 7
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -25,7 +25,7 @@ AC_DEFUN([gl_HEADER_TIME_H_BODY],
   AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
 ])
 
-dnl Define HAVE_STRUCT_TIMESPEC if 'struct timespec' is declared
+dnl Check whether 'struct timespec' is declared
 dnl in time.h, sys/time.h, or pthread.h.
 
 AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
diff --git a/gl/m4/time_r.m4 b/gl/m4/time_r.m4
index c3579fb3b8..9ddbd0199d 100644
--- a/gl/m4/time_r.m4
+++ b/gl/m4/time_r.m4
@@ -17,7 +17,7 @@ AC_DEFUN([gl_TIME_R],
 
   dnl Some systems don't declare localtime_r() and gmtime_r() if _REENTRANT is
   dnl not defined.
-  AC_CHECK_DECLS_ONCE([localtime_r])
+  AC_CHECK_DECLS([localtime_r], [], [], [[#include <time.h>]])
   if test $ac_cv_have_decl_localtime_r = no; then
     HAVE_DECL_LOCALTIME_R=0
   fi
diff --git a/gl/m4/visibility.m4 b/gl/m4/visibility.m4
index 7b24d39e68..a7d4d8c1dd 100644
--- a/gl/m4/visibility.m4
+++ b/gl/m4/visibility.m4
@@ -1,4 +1,4 @@
-# visibility.m4 serial 4 (gettext-0.18.2)
+# visibility.m4 serial 5 (gettext-0.18.2)
 dnl Copyright (C) 2005, 2008, 2010-2012 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -12,7 +12,7 @@ dnl __attribute__((__visibility__("hidden"))) and
 dnl __attribute__((__visibility__("default"))).
 dnl Does *not* test for __visibility__("protected") - which has tricky
 dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on
-dnl MacOS X.
+dnl Mac OS X.
 dnl Does *not* test for __visibility__("internal") - which has processor
 dnl dependent semantics.
 dnl Does *not* test for #pragma GCC visibility push(hidden) - which is