Update Gnulib to v0.1-4379-g2ef5a9b4b

Also bump required autoconf version to 2.64, as required by Gnulib.

1 files changed, 73 insertions, 81 deletions

diff --git a/m4/stdint.m4 b/m4/stdint.m4
index 4ac854d51..a785b44ed 100644
--- a/m4/stdint.m4
+++ b/m4/stdint.m4
@@ -1,5 +1,5 @@
-# stdint.m4 serial 50
-dnl Copyright (C) 2001-2017 Free Software Foundation, Inc.
+# stdint.m4 serial 58
+dnl Copyright (C) 2001-2021 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.
@@ -7,28 +7,22 @@ dnl with or without modifications, as long as this notice is preserved.
 dnl From Paul Eggert and Bruno Haible.
 dnl Test whether <stdint.h> is supported or must be substituted.
 
+AC_PREREQ([2.61])
+
 AC_DEFUN_ONCE([gl_STDINT_H],
 [
   AC_PREREQ([2.59])dnl
+  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
 
   AC_REQUIRE([gl_LIMITS_H])
   AC_REQUIRE([gt_TYPE_WINT_T])
 
-  dnl Check for long long int and unsigned long long int.
-  AC_REQUIRE([AC_TYPE_LONG_LONG_INT])
-  if test $ac_cv_type_long_long_int = yes; then
-    HAVE_LONG_LONG_INT=1
-  else
-    HAVE_LONG_LONG_INT=0
-  fi
-  AC_SUBST([HAVE_LONG_LONG_INT])
-  AC_REQUIRE([AC_TYPE_UNSIGNED_LONG_LONG_INT])
-  if test $ac_cv_type_unsigned_long_long_int = yes; then
-    HAVE_UNSIGNED_LONG_LONG_INT=1
-  else
-    HAVE_UNSIGNED_LONG_LONG_INT=0
-  fi
-  AC_SUBST([HAVE_UNSIGNED_LONG_LONG_INT])
+  dnl For backward compatibility. Some packages may still be testing these
+  dnl macros.
+  AC_DEFINE([HAVE_LONG_LONG_INT], [1],
+    [Define to 1 if the system has the type 'long long int'.])
+  AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],
+    [Define to 1 if the system has the type 'unsigned long long int'.])
 
   dnl Check for <wchar.h>, in the same way as gl_WCHAR_H does.
   AC_CHECK_HEADERS_ONCE([wchar.h])
@@ -40,7 +34,7 @@ AC_DEFUN_ONCE([gl_STDINT_H],
   AC_SUBST([HAVE_WCHAR_H])
 
   dnl Check for <inttypes.h>.
-  dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_inttypes_h.
+  AC_CHECK_HEADERS_ONCE([inttypes.h])
   if test $ac_cv_header_inttypes_h = yes; then
     HAVE_INTTYPES_H=1
   else
@@ -49,7 +43,7 @@ AC_DEFUN_ONCE([gl_STDINT_H],
   AC_SUBST([HAVE_INTTYPES_H])
 
   dnl Check for <sys/types.h>.
-  dnl AC_INCLUDES_DEFAULT defines $ac_cv_header_sys_types_h.
+  AC_CHECK_HEADERS_ONCE([sys/types.h])
   if test $ac_cv_header_sys_types_h = yes; then
     HAVE_SYS_TYPES_H=1
   else
@@ -158,7 +152,7 @@ uintmax_t j = UINTMAX_MAX;
 /* Check that SIZE_MAX has the correct type, if possible.  */
 #if 201112 <= __STDC_VERSION__
 int k = _Generic (SIZE_MAX, size_t: 0);
-#elif (2 <= __GNUC__ || defined __IBM__TYPEOF__ \
+#elif (2 <= __GNUC__ || 4 <= __clang_major__ || defined __IBM__TYPEOF__ \
        || (0x5110 <= __SUNPRO_C && !__STDC__))
 extern size_t k;
 extern __typeof__ (SIZE_MAX) k;
@@ -288,8 +282,12 @@ static const char *macro_values[] =
 ]])],
               [gl_cv_header_working_stdint_h=yes],
               [],
-              [dnl When cross-compiling, assume it works.
-               gl_cv_header_working_stdint_h=yes
+              [case "$host_os" in
+                         # Guess yes on native Windows.
+                 mingw*) gl_cv_header_working_stdint_h="guessing yes" ;;
+                         # In general, assume it works.
+                 *)      gl_cv_header_working_stdint_h="guessing yes" ;;
+               esac
               ])
          ])
       ])
@@ -299,15 +297,17 @@ static const char *macro_values[] =
   HAVE_SYS_BITYPES_H=0
   HAVE_SYS_INTTYPES_H=0
   STDINT_H=stdint.h
-  if test "$gl_cv_header_working_stdint_h" = yes; then
-    HAVE_C99_STDINT_H=1
-    dnl Now see whether the system <stdint.h> works without
-    dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined.
-    AC_CACHE_CHECK([whether stdint.h predates C++11],
-      [gl_cv_header_stdint_predates_cxx11_h],
-      [gl_cv_header_stdint_predates_cxx11_h=yes
-       AC_COMPILE_IFELSE([
-         AC_LANG_PROGRAM([[
+  case "$gl_cv_header_working_stdint_h" in
+    *yes)
+      HAVE_C99_STDINT_H=1
+      dnl Now see whether the system <stdint.h> works without
+      dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined.
+      dnl If not, there would be problems when stdint.h is included from C++.
+      AC_CACHE_CHECK([whether stdint.h works without ISO C predefines],
+        [gl_cv_header_stdint_without_STDC_macros],
+        [gl_cv_header_stdint_without_STDC_macros=no
+         AC_COMPILE_IFELSE([
+           AC_LANG_PROGRAM([[
 #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
 #include <stdint.h>
 ]
@@ -315,49 +315,51 @@ gl_STDINT_INCLUDES
 [
 intmax_t im = INTMAX_MAX;
 int32_t i32 = INT32_C (0x7fffffff);
-         ]])],
-         [gl_cv_header_stdint_predates_cxx11_h=no])])
+           ]])],
+           [gl_cv_header_stdint_without_STDC_macros=yes])
+        ])
 
-    if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then
-      AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
-                [Define to 1 if the system <stdint.h> predates C++11.])
-      AC_DEFINE([__STDC_LIMIT_MACROS], [1],
-                [Define to 1 if the system <stdint.h> predates C++11.])
-    fi
-    AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
-      [gl_cv_header_stdint_width],
-      [gl_cv_header_stdint_width=no
-       AC_COMPILE_IFELSE(
-         [AC_LANG_PROGRAM([[
-            /* Work if build is not clean.  */
-            #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
-            #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
-             #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
-            #endif
-            #include <stdint.h>
-            ]gl_STDINT_INCLUDES[
-            int iw = UINTMAX_WIDTH;
-            ]])],
-         [gl_cv_header_stdint_width=yes])])
-    if test "$gl_cv_header_stdint_width" = yes; then
-      STDINT_H=
-    fi
-  else
-    dnl Check for <sys/inttypes.h>, and for
-    dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
-    AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
-    if test $ac_cv_header_sys_inttypes_h = yes; then
-      HAVE_SYS_INTTYPES_H=1
-    fi
-    if test $ac_cv_header_sys_bitypes_h = yes; then
-      HAVE_SYS_BITYPES_H=1
-    fi
-    gl_STDINT_TYPE_PROPERTIES
-  fi
+      if test $gl_cv_header_stdint_without_STDC_macros = no; then
+        AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
+          [Define to 1 if the system <stdint.h> predates C++11.])
+        AC_DEFINE([__STDC_LIMIT_MACROS], [1],
+          [Define to 1 if the system <stdint.h> predates C++11.])
+      fi
+      AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
+        [gl_cv_header_stdint_width],
+        [gl_cv_header_stdint_width=no
+         AC_COMPILE_IFELSE(
+           [AC_LANG_PROGRAM([[
+              /* Work if build is not clean.  */
+              #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
+              #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+               #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+              #endif
+              #include <stdint.h>
+              ]gl_STDINT_INCLUDES[
+              int iw = UINTMAX_WIDTH;
+              ]])],
+           [gl_cv_header_stdint_width=yes])])
+      if test "$gl_cv_header_stdint_width" = yes; then
+        STDINT_H=
+      fi
+      ;;
+    *)
+      dnl Check for <sys/inttypes.h>, and for
+      dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
+      AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
+      if test $ac_cv_header_sys_inttypes_h = yes; then
+        HAVE_SYS_INTTYPES_H=1
+      fi
+      if test $ac_cv_header_sys_bitypes_h = yes; then
+        HAVE_SYS_BITYPES_H=1
+      fi
+      gl_STDINT_TYPE_PROPERTIES
+      ;;
+  esac
 
   dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH.
-  LIMITS_H=limits.h
-  AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"])
+  gl_REPLACE_LIMITS_H
 
   AC_SUBST([HAVE_C99_STDINT_H])
   AC_SUBST([HAVE_SYS_BITYPES_H])
@@ -491,13 +493,9 @@ AC_DEFUN([gl_INTEGER_TYPE_SUFFIX],
 dnl gl_STDINT_INCLUDES
 AC_DEFUN([gl_STDINT_INCLUDES],
 [[
-  /* BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
-     included before <wchar.h>.  */
   #include <stddef.h>
   #include <signal.h>
   #if HAVE_WCHAR_H
-  # include <stdio.h>
-  # include <time.h>
   # include <wchar.h>
   #endif
 ]])
@@ -533,9 +531,3 @@ AC_DEFUN([gl_STDINT_TYPE_PROPERTIES],
     BITSIZEOF_WINT_T=32
   fi
 ])
-
-dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
-dnl Remove this when we can assume autoconf >= 2.61.
-m4_ifdef([AC_COMPUTE_INT], [], [
-  AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
-])