Update from gnulib

* admin/merge-gnulib (GNULIB_MODULES):
* cross/lib/getopt-pfx-core.h (optind):
* cross/lib/limits.in.h (BOOL_WIDTH):
* cross/lib/math.in.h:
* cross/lib/stpncpy.c (__stpncpy):
* cross/lib/string.in.h:
* lib/getopt-pfx-core.h (optind):
* lib/gnulib.mk.in (ANDROID_MIN_SDK):
(GL_COND_OBJ_STDIO_READ_CONDITION):
(LIBS):
(NDK_BUILD_AR):
(REPLACE__EXIT):
(libgnu_a_SOURCES):
* lib/limits.in.h (BOOL_WIDTH):
* lib/math.in.h:
* lib/stpncpy.c (__stpncpy):
* lib/string.in.h:
* m4/assert_h.m4 (gl_ASSERT_H):
* m4/fdopendir.m4 (gl_FUNC_FDOPENDIR):
* m4/getdelim.m4 (gl_FUNC_GETDELIM):
* m4/getline.m4 (gl_FUNC_GETLINE):
* m4/gnulib-common.m4 (gl_COMMON_BODY):
(gl_CONDITIONAL_HEADER):
(gl_CHECK_FUNCS_ANDROID):
* m4/gnulib-comp.m4 (gl_EARLY):
(gl_INIT):
(gl_FILE_LIST):
* m4/limits-h.m4:
* m4/lstat.m4 (gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK):
* m4/malloc.m4 (_AC_FUNC_MALLOC_IF):
* m4/printf.m4 (gl_PRINTF_SIZES_C99):
(gl_PRINTF_INFINITE):
(gl_PRINTF_INFINITE_LONG_DOUBLE):
(gl_PRINTF_DIRECTIVE_A):
(gl_PRINTF_DIRECTIVE_F):
(gl_PRINTF_FLAG_ZERO):
(gl_SNPRINTF_PRESENCE):
(gl_SNPRINTF_DIRECTIVE_N):
(gl_VSNPRINTF_ZEROSIZE_C99):
* m4/pselect.m4 (gl_FUNC_PSELECT):
* m4/readlink.m4 (gl_FUNC_READLINK):
* m4/realloc.m4 (_AC_FUNC_REALLOC_IF):
* m4/signbit.m4 (gl_SIGNBIT):
* m4/stpncpy.m4 (gl_FUNC_STPNCPY):
* m4/symlink.m4 (gl_FUNC_SYMLINK): Add gnulib module stpncpy.
* src/android.c: Include string.h.

cross/lib/getopt-pfx-core.h

@@ -47,7 +47,7 @@
 # define optind __GETOPT_ID (optind)
 # define optopt __GETOPT_ID (optopt)
 
-/* Work around a a problem on macOS, which declares getopt with a
+/* Work around a problem on macOS, which declares getopt with a
    trailing __DARWIN_ALIAS(getopt) that would expand to something like
    __asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
    hack to suppress the macOS declaration <https://bugs.gnu.org/40205>.  */

cross/lib/limits.in.h

@@ -119,11 +119,14 @@
 
 /* Macros specified by C23.  */
 
-#if (! defined BOOL_WIDTH \
-     && (defined _GNU_SOURCE \
-         || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__)))
-# define BOOL_MAX 1
-# define BOOL_WIDTH 1
+#if (defined _GNU_SOURCE \
+     || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__))
+# if ! defined BOOL_WIDTH
+#  define BOOL_WIDTH 1
+#  define BOOL_MAX 1
+# elif ! defined BOOL_MAX
+#  define BOOL_MAX ((((1U << (BOOL_WIDTH - 1)) - 1) << 1) + 1)
+# endif
 #endif
 
 #endif /* _@GUARD_PREFIX@_LIMITS_H */

cross/lib/math.in.h

@@ -2624,7 +2624,7 @@ _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
 #  if defined isnan || defined GNULIB_NAMESPACE
 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
 #   undef isnan
-#   if __GNUC__ >= 6 || (defined __clang__ && !((defined __APPLE__ && defined __MACH__ && __clang_major__ < 12) || (defined __FreeBSD__ && (__clang_major__ < 7 || __clang_major__ >= 11)) || defined __OpenBSD__ || (defined _WIN32 && !defined __CYGWIN__)))
+#   if __GNUC__ >= 6 || (defined __clang__ && !((defined __APPLE__ && defined __MACH__ && __clang_major__ != 12) || (defined __FreeBSD__ && (__clang_major__ < 7 || __clang_major__ >= 11)) || defined __OpenBSD__ || (defined _WIN32 && !defined __CYGWIN__)))
   /* This platform's <cmath> possibly defines isnan through a set of inline
      functions.  */
 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan, rpl_isnan, bool)

cross/lib/stpncpy.c

@@ -0,0 +1,92 @@
+/* Copyright (C) 1993, 1995-1997, 2002-2003, 2005-2007, 2009-2023 Free Software
+ * Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@gnu.org.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* This is almost copied from strncpy.c, written by Torbjorn Granlund.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <string.h>
+
+#ifndef weak_alias
+# define __stpncpy stpncpy
+#endif
+
+/* Copy no more than N bytes of SRC to DST, returning a pointer past the
+   last non-NUL byte written into DST.  */
+char *
+(__stpncpy) (char *dest, const char *src, size_t n)
+{
+  char c;
+  char *s = dest;
+
+  if (n >= 4)
+    {
+      size_t n4 = n >> 2;
+
+      for (;;)
+        {
+          c = *src++;
+          *dest++ = c;
+          if (c == '\0')
+            break;
+          c = *src++;
+          *dest++ = c;
+          if (c == '\0')
+            break;
+          c = *src++;
+          *dest++ = c;
+          if (c == '\0')
+            break;
+          c = *src++;
+          *dest++ = c;
+          if (c == '\0')
+            break;
+          if (--n4 == 0)
+            goto last_chars;
+        }
+      n -= dest - s;
+      goto zero_fill;
+    }
+
+ last_chars:
+  n &= 3;
+  if (n == 0)
+    return dest;
+
+  for (;;)
+    {
+      c = *src++;
+      --n;
+      *dest++ = c;
+      if (c == '\0')
+        break;
+      if (n == 0)
+        return dest;
+    }
+
+ zero_fill:
+  while (n-- > 0)
+    dest[n] = '\0';
+
+  return dest - 1;
+}
+#ifdef weak_alias
+weak_alias (__stpncpy, stpncpy)
+#endif

cross/lib/string.in.h

@@ -126,7 +126,11 @@
 # if (@REPLACE_FREE@ && !defined free \
       && !(defined __cplusplus && defined GNULIB_NAMESPACE))
 /* We can't do '#define free rpl_free' here.  */
+#  if defined __cplusplus && (__GLIBC__ + (__GLIBC_MINOR__ >= 14) > 2)
+_GL_EXTERN_C void rpl_free (void *) throw ();
+#  else
 _GL_EXTERN_C void rpl_free (void *);
+#  endif
 #  undef _GL_ATTRIBUTE_DEALLOC_FREE
 #  define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (rpl_free, 1)
 # else