/* config-h.in.  Generated from configure.ac by autoheader.  */

/* Witness that <config.h> has been included.  */
#define _GL_CONFIG_H_INCLUDED 1


/* Define to 1 if you have the 'argz_add' function. */
#undef HAVE_ARGZ_ADD

/* Define to 1 if you have the 'argz_append' function. */
#undef HAVE_ARGZ_APPEND

/* Define to 1 if you have the 'argz_count' function. */
#undef HAVE_ARGZ_COUNT

/* Define to 1 if you have the 'argz_create_sep' function. */
#undef HAVE_ARGZ_CREATE_SEP

/* Define to 1 if you have the <argz.h> header file. */
#undef HAVE_ARGZ_H

/* Define to 1 if you have the 'argz_insert' function. */
#undef HAVE_ARGZ_INSERT

/* Define to 1 if you have the 'argz_next' function. */
#undef HAVE_ARGZ_NEXT

/* Define to 1 if you have the 'argz_stringify' function. */
#undef HAVE_ARGZ_STRINGIFY

/* Define to 1 if you have the 'closedir' function. */
#undef HAVE_CLOSEDIR

/* Define to 1 if you have the declaration of 'cygwin_conv_path', and to 0 if
   you don't. */
#undef HAVE_DECL_CYGWIN_CONV_PATH

/* Define to 1 if you have the <dirent.h> header file. */
#undef HAVE_DIRENT_H

/* Define if you have the GNU dld library. */
#undef HAVE_DLD

/* Define to 1 if you have the <dld.h> header file. */
#undef HAVE_DLD_H

/* Define to 1 if you have the 'dlerror' function. */
#undef HAVE_DLERROR

/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H

/* Define to 1 if you have the <dl.h> header file. */
#undef HAVE_DL_H

/* Define if you have the _dyld_func_lookup function. */
#undef HAVE_DYLD

/* Define to 1 if the system has the type 'error_t'. */
#undef HAVE_ERROR_T

/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H

/* Define if you have the libdl library or equivalent. */
#undef HAVE_LIBDL

/* Define if libdlloader will be built on this platform */
#undef HAVE_LIBDLLOADER

/* Define to 1 if you have the <mach-o/dyld.h> header file. */
#undef HAVE_MACH_O_DYLD_H

/* Define to 1 if you have the 'opendir' function. */
#undef HAVE_OPENDIR

/* Define if libtool can extract symbol lists from object files. */
#undef HAVE_PRELOADED_SYMBOLS

/* Define to 1 if you have the 'readdir' function. */
#undef HAVE_READDIR

/* Define if you have the shl_load function. */
#undef HAVE_SHL_LOAD

/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H

/* Define to 1 if you have the <stdio.h> header file. */
#undef HAVE_STDIO_H

/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H

/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H

/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H

/* Define to 1 if you have the 'strlcat' function. */
#undef HAVE_STRLCAT

/* Define to 1 if you have the 'strlcpy' function. */
#undef HAVE_STRLCPY

/* Define to 1 if you have the <sys/dl.h> header file. */
#undef HAVE_SYS_DL_H

/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H

/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H

/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H

/* This value is set to 1 to indicate that the system argz facility works */
#undef HAVE_WORKING_ARGZ

/* Define if the OS needs help to load dependent libraries for dlopen(). */
#undef LTDL_DLOPEN_DEPLIBS

/* Define to the system default library search path. */
#undef LT_DLSEARCH_PATH

/* The archive extension */
#undef LT_LIBEXT

/* The archive prefix */
#undef LT_LIBPREFIX

/* Define to the extension used for runtime loadable modules, say, ".so". */
#undef LT_MODULE_EXT

/* Define to the name of the environment variable that determines the run-time
   module search path. */
#undef LT_MODULE_PATH_VAR

/* Define to the sub-directory where libtool stores uninstalled libraries. */
#undef LT_OBJDIR

/* Define to the shared library suffix, say, ".dylib". */
#undef LT_SHARED_EXT

/* Define to the shared archive member specification, say "(shr.o)". */
#undef LT_SHARED_LIB_MEMBER

/* Define if dlsym() requires a leading underscore in symbol names. */
#undef NEED_USCORE

/* Name of package */
#undef PACKAGE

/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT

/* Define to the full name of this package. */
#undef PACKAGE_NAME

/* Define to the full name and version of this package. */
#undef PACKAGE_STRING

/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME

/* Define to the home page for this package. */
#undef PACKAGE_URL

/* Define to the version of this package. */
#undef PACKAGE_VERSION

/* Define to 1 if all of the C89 standard headers exist (not just the ones
   required in a freestanding environment). This macro is provided for
   backward compatibility; new code need not use it. */
#undef STDC_HEADERS

/* Version number of package */
#undef VERSION

/* True if the compiler says it groks GNU C version MAJOR.MINOR.
    Except that
      - clang groks GNU C 4.2, even on Windows, where it does not define
        __GNUC__.
      - The OpenMandriva-modified clang compiler pretends that it groks
        GNU C version 13.1, but it doesn't: It does not support
        __attribute__ ((__malloc__ (f, i))), nor does it support
        __attribute__ ((__warning__ (message))) on a function redeclaration.
      - Users can make clang lie as well, through the -fgnuc-version option.  */
#if defined __GNUC__ && defined __GNUC_MINOR__ && !defined __clang__
# define _GL_GNUC_PREREQ(major, minor) \
    ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
#elif defined __clang__
  /* clang really only groks GNU C 4.2.  */
# define _GL_GNUC_PREREQ(major, minor) \
    ((major) < 4 + ((minor) <= 2))
#else
# define _GL_GNUC_PREREQ(major, minor) 0
#endif


/* The _Noreturn keyword of C11.  */
#ifndef _Noreturn
# if (defined __cplusplus \
      && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
          || (defined _MSC_VER && 1900 <= _MSC_VER)) \
      && 0)
    /* [[noreturn]] is not practically usable, because with it the syntax
         extern _Noreturn void func (...);
       would not be valid; such a declaration would only be valid with 'extern'
       and '_Noreturn' swapped, or without the 'extern' keyword.  However, some
       AIX system header files and several gnulib header files use precisely
       this syntax with 'extern'.  */
#  define _Noreturn [[noreturn]]
# elif (defined __clang__ && __clang_major__ < 16 \
        && defined _GL_WORK_AROUND_LLVM_BUG_59792)
   /* Compile with -D_GL_WORK_AROUND_LLVM_BUG_59792 to work around
      that rare LLVM bug, though you may get many false-alarm warnings.  */
#  define _Noreturn
# elif ((!defined __cplusplus || defined __clang__) \
        && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
            || (!defined __STRICT_ANSI__ \
                && (_GL_GNUC_PREREQ (4, 7) \
                    || (defined __apple_build_version__ \
                        ? 6000000 <= __apple_build_version__ \
                        : 3 < __clang_major__ + (5 <= __clang_minor__))))))
   /* _Noreturn works as-is.  */
# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
#  define _Noreturn __attribute__ ((__noreturn__))
# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
#  define _Noreturn __declspec (noreturn)
# else
#  define _Noreturn
# endif
#endif


/* Define so that glibc/gnulib argp.h does not typedef error_t. */
#undef __error_t_defined

/* The _GL_ASYNC_SAFE marker should be attached to functions that are
   signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
   invoked from such signal handlers.  Such functions have some restrictions:
     * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
       or should be listed as async-signal-safe in POSIX
       <https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04>
       section 2.4.3.  Note that malloc(), sprintf(), and fwrite(), in
       particular, are NOT async-signal-safe.
     * All memory locations (variables and struct fields) that these functions
       access must be marked 'volatile'.  This holds for both read and write
       accesses.  Otherwise the compiler might optimize away stores to and
       reads from such locations that occur in the program, depending on its
       data flow analysis.  For example, when the program contains a loop
       that is intended to inspect a variable set from within a signal handler
           while (!signal_occurred)
             ;
       the compiler is allowed to transform this into an endless loop if the
       variable 'signal_occurred' is not declared 'volatile'.
   Additionally, recall that:
     * A signal handler should not modify errno (except if it is a handler
       for a fatal signal and ends by raising the same signal again, thus
       provoking the termination of the process).  If it invokes a function
       that may clobber errno, it needs to save and restore the value of
       errno.  */
#define _GL_ASYNC_SAFE


/* Attributes.  */
/* Define _GL_HAS_ATTRIBUTE only once, because on FreeBSD, with gcc < 5, if
   <config.h> gets included once again after <sys/cdefs.h>, __has_attribute(x)
   expands to 0 always, and redefining _GL_HAS_ATTRIBUTE would turn off all
   attributes.  */
#ifndef _GL_HAS_ATTRIBUTE
# if (defined __has_attribute \
      && (!defined __clang_minor__ \
          || (defined __apple_build_version__ \
              ? 7000000 <= __apple_build_version__ \
              : 5 <= __clang_major__)))
#  define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
# else
#  define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
#  define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
#  define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
#  define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
#  define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
#  define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
#  define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
#  define _GL_ATTR_diagnose_if 0
#  define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
#  define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
#  define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
#  define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
#  define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
#  define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
#  ifdef _ICC
#   define _GL_ATTR_may_alias 0
#  else
#   define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
#  endif
#  define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
#  define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
#  define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
#  define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
#  define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
#  define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
#  define _GL_ATTR_reproducible 0 /* not yet supported, as of GCC 14 */
#  define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
#  define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
#  define _GL_ATTR_unsequenced 0 /* not yet supported, as of GCC 14 */
#  define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
#  define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
# endif
#endif

/* Use __has_c_attribute if available.  However, do not use with
   pre-C23 GCC, which can issue false positives if -Wpedantic.  */
#if (defined __has_c_attribute \
     && ! (_GL_GNUC_PREREQ (4, 6) \
           && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710))
# define _GL_HAVE___HAS_C_ATTRIBUTE 1
#else
# define _GL_HAVE___HAS_C_ATTRIBUTE 0
#endif

/* Attributes in bracket syntax [[...]] vs. attributes in __attribute__((...))
   syntax, in function declarations.  There are two problems here.
   (Last tested with gcc/g++ 14 and clang/clang++ 18.)

   1) We want that the _GL_ATTRIBUTE_* can be cumulated on the same declaration
      in any order.
      =========================== foo.c = foo.cc ===========================
      __attribute__ ((__deprecated__)) [[__nodiscard__]] int bar1 (int);
      [[__nodiscard__]] __attribute__ ((__deprecated__)) int bar2 (int);
      ======================================================================
      This gives a syntax error
        - in C mode with gcc
          <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108796>, and
        - in C++ mode with clang++ version < 16, and
        - in C++ mode, inside extern "C" {}, still in newer clang++ versions
          <https://github.com/llvm/llvm-project/issues/101990>.
 */
/* Define if, in a function declaration, the attributes in bracket syntax
   [[...]] must come before the attributes in __attribute__((...)) syntax.
   If this is defined, it is best to avoid the bracket syntax, so that the
   various _GL_ATTRIBUTE_* can be cumulated on the same declaration in any
   order.  */
#ifdef __cplusplus
# if defined __clang__
#  define _GL_BRACKET_BEFORE_ATTRIBUTE 1
# endif
#else
# if defined __GNUC__ && !defined __clang__
#  define _GL_BRACKET_BEFORE_ATTRIBUTE 1
# endif
#endif
/*
   2) We want that the _GL_ATTRIBUTE_* can be placed in a declaration
        - without 'extern', in C as well as in C++,
        - with 'extern', in C,
        - with 'extern "C"', in C++
      in the same position.  That is, we don't want to be forced to use a
      macro which arranges for the attribute to come before 'extern' in
      one case and after 'extern' in the other case, because such a macro
      would make the source code of .h files pretty ugly.
      =========================== foo.c = foo.cc ===========================
      #ifdef __cplusplus
      # define CC "C"
      #else
      # define CC
      #endif

      #define ND   [[__nodiscard__]]
      #define WUR  __attribute__((__warn_unused_result__))

      #ifdef __cplusplus
      extern "C" {
      #endif
                                        // gcc   clang  g++   clang++

      ND int foo (int);
      int ND foo (int);                 // warn  error  warn  error
      int foo ND (int);
      int foo (int) ND;                 // warn  error  warn  error

      WUR int foo (int);
      int WUR foo (int);
      int fo1 WUR (int);                // error error  error error
      int foo (int) WUR;

      #ifdef __cplusplus
      }
      #endif

                                        // gcc   clang  g++   clang++

      ND extern CC int foo (int);       //              error error
      extern CC ND int foo (int);       // error error
      extern CC int ND foo (int);       // warn  error  warn  error
      extern CC int foo ND (int);
      extern CC int foo (int) ND;       // warn  error  warn  error

      WUR extern CC int foo (int);      //              warn
      extern CC WUR int foo (int);
      extern CC int WUR foo (int);
      extern CC int foo WUR (int);      // error error  error error
      extern CC int foo (int) WUR;

      ND EXTERN_C_FUNC int foo (int);   //              error error
      EXTERN_C_FUNC ND int foo (int);
      EXTERN_C_FUNC int ND foo (int);   // warn  error  warn  error
      EXTERN_C_FUNC int foo ND (int);
      EXTERN_C_FUNC int foo (int) ND;   // warn  error  warn  error

      WUR EXTERN_C_FUNC int foo (int);  //              warn
      EXTERN_C_FUNC WUR int foo (int);
      EXTERN_C_FUNC int WUR foo (int);
      EXTERN_C_FUNC int fo2 WUR (int);  // error error  error error
      EXTERN_C_FUNC int foo (int) WUR;
      ======================================================================
      So, if we insist on using the 'extern' keyword ('extern CC' idiom):
        * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]]
          in both C and C++, there is one available position:
            - between the function name and the parameter list.
        * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax
          in both C and C++, there are several available positions:
            - before the return type,
            - between return type and function name,
            - at the end of the declaration.
        * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]] in C and to
          __attribute__((...)) syntax in C++, there is no available position:
          it would need to come before 'extern' in C but after 'extern "C"'
          in C++.
        * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax in C and
          to bracket syntax [[...]] in C++, there is one available position:
            - before the return type.
      Whereas, if we use the 'EXTERN_C_FUNC' idiom, which conditionally
      omits the 'extern' keyword:
        * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]]
          in both C and C++, there are two available positions:
            - before the return type,
            - between the function name and the parameter list.
        * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax
          in both C and C++, there are several available positions:
            - before the return type,
            - between return type and function name,
            - at the end of the declaration.
        * If _GL_ATTRIBUTE_* expands to bracket syntax [[...]] in C and to
          __attribute__((...)) syntax in C++, there is one available position:
            - before the return type.
        * If _GL_ATTRIBUTE_* expands to __attribute__((...)) syntax in C and
          to bracket syntax [[...]] in C++, there is one available position:
            - before the return type.
      The best choice is therefore to use the 'EXTERN_C_FUNC' idiom and
      put the attributes before the return type. This works regardless
      to what the _GL_ATTRIBUTE_* macros expand.
 */

/* Attributes in bracket syntax [[...]] vs. attributes in __attribute__((...))
   syntax, in static/inline function definitions.

   There are similar constraints as for function declarations.  However, here,
   we cannot omit the storage-class specifier.  Therefore, the following rule
   applies:
     * The macros
         _GL_ATTRIBUTE_CONST
         _GL_ATTRIBUTE_DEPRECATED
         _GL_ATTRIBUTE_MAYBE_UNUSED
         _GL_ATTRIBUTE_NODISCARD
         _GL_ATTRIBUTE_PURE
         _GL_ATTRIBUTE_REPRODUCIBLE
         _GL_ATTRIBUTE_UNSEQUENCED
       which may expand to bracket syntax [[...]], must come first, before the
       storage-class specifier.
     * Other _GL_ATTRIBUTE_* macros, that expand to __attribute__((...)) syntax,
       are better placed between the storage-class specifier and the return
       type.
 */

/* Attributes in bracket syntax [[...]] vs. attributes in __attribute__((...))
   syntax, in variable declarations.

   At which position can they be placed?
   (Last tested with gcc/g++ 14 and clang/clang++ 18.)

      =========================== foo.c = foo.cc ===========================
      #ifdef __cplusplus
      # define CC "C"
      #else
      # define CC
      #endif

      #define BD   [[__deprecated__]]
      #define AD   __attribute__ ((__deprecated__))

                              // gcc   clang  g++    clang++

      BD extern CC int var;   //              error  error
      extern CC BD int var;   // error error
      extern CC int BD var;   // warn  error  warn   error
      extern CC int var BD;

      AD extern CC int var;   //              warn
      extern CC AD int var;
      extern CC int AD var;
      extern CC int var AD;

      BD extern CC int z[];   //              error  error
      extern CC BD int z[];   // error error
      extern CC int BD z[];   // warn  error  warn   error
      extern CC int z1 BD [];
      extern CC int z[] BD;   // warn  error         error

      AD extern CC int z[];   //              warn
      extern CC AD int z[];
      extern CC int AD z[];
      extern CC int z2 AD []; // error error  error  error
      extern CC int z[] AD;
      ======================================================================

   * For non-array variables, the only good position is after the variable name,
     that is, at the end of the declaration.
   * For array variables, you will need to distinguish C and C++:
       - In C, before the 'extern' keyword.
       - In C++, between the 'extern "C"' and the variable's type.
 */

/* _GL_ATTRIBUTE_ALLOC_SIZE ((N)) declares that the Nth argument of the function
   is the size of the returned memory block.
   _GL_ATTRIBUTE_ALLOC_SIZE ((M, N)) declares that the Mth argument multiplied
   by the Nth argument of the function is the size of the returned memory block.
 */
/* Applies to: functions, pointer to functions, function types.  */
#ifndef _GL_ATTRIBUTE_ALLOC_SIZE
# if _GL_HAS_ATTRIBUTE (alloc_size)
#  define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
# else
#  define _GL_ATTRIBUTE_ALLOC_SIZE(args)
# endif
#endif

/* _GL_ATTRIBUTE_ALWAYS_INLINE tells that the compiler should always inline the
   function and report an error if it cannot do so.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_ALWAYS_INLINE
# if _GL_HAS_ATTRIBUTE (always_inline)
#  define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
# else
#  define _GL_ATTRIBUTE_ALWAYS_INLINE
# endif
#endif

/* _GL_ATTRIBUTE_ARTIFICIAL declares that the function is not important to show
    in stack traces when debugging.  The compiler should omit the function from
    stack traces.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_ARTIFICIAL
# if _GL_HAS_ATTRIBUTE (artificial)
#  define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
# else
#  define _GL_ATTRIBUTE_ARTIFICIAL
# endif
#endif

/* _GL_ATTRIBUTE_COLD declares that the function is rarely executed.  */
/* Applies to: functions.  */
/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
   <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>.
   Also, Oracle Studio 12.6 requires 'cold' not '__cold__'.  */
#ifndef _GL_ATTRIBUTE_COLD
# if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
#  ifndef __SUNPRO_C
#   define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
#  else
#   define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
#  endif
# else
#  define _GL_ATTRIBUTE_COLD
# endif
#endif

/* _GL_ATTRIBUTE_CONST declares:
   It is OK for a compiler to move calls to the function and to omit
   calls to the function if another call has the same arguments or the
   result is not used.
   This attribute is safe for a function that neither depends on
   nor affects state, and always returns exactly once -
   e.g., does not raise an exception, call longjmp, or loop forever.
   (This attribute is stricter than _GL_ATTRIBUTE_PURE because the
   function cannot observe state.  It is stricter than
   _GL_ATTRIBUTE_UNSEQUENCED because the function must return exactly
   once and cannot depend on state addressed by its arguments.)  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_CONST
# if _GL_HAS_ATTRIBUTE (const)
#  define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
# else
#  define _GL_ATTRIBUTE_CONST _GL_ATTRIBUTE_UNSEQUENCED
# endif
#endif

/* _GL_ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers
   that can be freed by passing them as the Ith argument to the
   function F.
   _GL_ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that
   can be freed via 'free'; it can be used only after declaring 'free'.  */
/* Applies to: functions.  Cannot be used on inline functions.  */
#ifndef _GL_ATTRIBUTE_DEALLOC
# if _GL_GNUC_PREREQ (11, 0)
#  define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
# else
#  define _GL_ATTRIBUTE_DEALLOC(f, i)
# endif
#endif
/* If gnulib's <string.h> or <wchar.h> has already defined this macro, continue
   to use this earlier definition, since <stdlib.h> may not have been included
   yet.  */
#ifndef _GL_ATTRIBUTE_DEALLOC_FREE
# if defined __cplusplus && defined __GNUC__ && !defined __clang__
/* Work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108231> */
#  define _GL_ATTRIBUTE_DEALLOC_FREE \
     _GL_ATTRIBUTE_DEALLOC ((void (*) (void *)) free, 1)
# else
#  define _GL_ATTRIBUTE_DEALLOC_FREE \
     _GL_ATTRIBUTE_DEALLOC (free, 1)
# endif
#endif

/* _GL_ATTRIBUTE_DEPRECATED: Declares that an entity is deprecated.
   The compiler may warn if the entity is used.  */
/* Applies to:
     - function, variable,
     - struct, union, struct/union member,
     - enumeration, enumeration item,
     - typedef,
   in C++ also: namespace, class, template specialization.  */
#ifndef _GL_ATTRIBUTE_DEPRECATED
# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE
#  if _GL_HAVE___HAS_C_ATTRIBUTE
#   if __has_c_attribute (__deprecated__)
#    define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
#   endif
#  endif
# endif
# if !defined _GL_ATTRIBUTE_DEPRECATED && _GL_HAS_ATTRIBUTE (deprecated)
#  define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
# endif
# ifndef _GL_ATTRIBUTE_DEPRECATED
#  define _GL_ATTRIBUTE_DEPRECATED
# endif
#endif

/* _GL_ATTRIBUTE_ERROR(msg) requests an error if a function is called and
   the function call is not optimized away.
   _GL_ATTRIBUTE_WARNING(msg) requests a warning if a function is called and
   the function call is not optimized away.  */
/* Applies to: functions.  */
#if !(defined _GL_ATTRIBUTE_ERROR && defined _GL_ATTRIBUTE_WARNING)
# if _GL_HAS_ATTRIBUTE (error)
#  define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
#  define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
# elif _GL_HAS_ATTRIBUTE (diagnose_if)
#  define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
#  define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
# else
#  define _GL_ATTRIBUTE_ERROR(msg)
#  define _GL_ATTRIBUTE_WARNING(msg)
# endif
#endif

/* _GL_ATTRIBUTE_EXTERNALLY_VISIBLE declares that the entity should remain
   visible to debuggers etc., even with '-fwhole-program'.  */
/* Applies to: functions, variables.  */
#ifndef _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
# if _GL_HAS_ATTRIBUTE (externally_visible)
#  define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
# else
#  define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
# endif
#endif

/* _GL_ATTRIBUTE_FALLTHROUGH declares that it is not a programming mistake if
   the control flow falls through to the immediately following 'case' or
   'default' label.  The compiler should not warn in this case.  */
/* Applies to: Empty statement (;), inside a 'switch' statement.  */
/* Always expands to something.  */
#ifndef _GL_ATTRIBUTE_FALLTHROUGH
# if _GL_HAVE___HAS_C_ATTRIBUTE
#  if __has_c_attribute (__fallthrough__)
#   define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
#  endif
# endif
# if !defined _GL_ATTRIBUTE_FALLTHROUGH && _GL_HAS_ATTRIBUTE (fallthrough)
#  define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
# endif
# ifndef _GL_ATTRIBUTE_FALLTHROUGH
#  define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
# endif
#endif

/* _GL_ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK))
   declares that the STRING-INDEXth function argument is a format string of
   style ARCHETYPE, which is one of:
     printf, gnu_printf
     scanf, gnu_scanf,
     strftime, gnu_strftime,
     strfmon,
   or the same thing prefixed and suffixed with '__'.
   If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK
   are suitable for the format string.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_FORMAT
# if _GL_HAS_ATTRIBUTE (format)
#  define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
# else
#  define _GL_ATTRIBUTE_FORMAT(spec)
# endif
#endif

/* _GL_ATTRIBUTE_LEAF declares that if the function is called from some other
   compilation unit, it executes code from that unit only by return or by
   exception handling.  This declaration lets the compiler optimize that unit
   more aggressively.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_LEAF
# if _GL_HAS_ATTRIBUTE (leaf)
#  define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
# else
#  define _GL_ATTRIBUTE_LEAF
# endif
#endif

/* _GL_ATTRIBUTE_MALLOC declares that the function returns a pointer to freshly
   allocated memory.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_MALLOC
# if _GL_HAS_ATTRIBUTE (malloc)
#  define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
# else
#  define _GL_ATTRIBUTE_MALLOC
# endif
#endif

/* _GL_ATTRIBUTE_MAY_ALIAS declares that pointers to the type may point to the
   same storage as pointers to other types.  Thus this declaration disables
   strict aliasing optimization.  */
/* Applies to: types.  */
/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK.  */
#ifndef _GL_ATTRIBUTE_MAY_ALIAS
# if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
#  define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
# else
#  define _GL_ATTRIBUTE_MAY_ALIAS
# endif
#endif

/* _GL_ATTRIBUTE_MAYBE_UNUSED declares that it is not a programming mistake if
   the entity is not used.  The compiler should not warn if the entity is not
   used.  */
/* Applies to:
     - function, variable,
     - struct, union, struct/union member,
     - enumeration, enumeration item,
     - typedef,
   in C++ also: class.  */
/* In C++ and C23, this is spelled [[__maybe_unused__]].
   GCC's syntax is __attribute__ ((__unused__)).
   clang supports both syntaxes.  Except that with clang ≥ 6, < 10, in C++ mode,
   __has_c_attribute (__maybe_unused__) yields true but the use of
   [[__maybe_unused__]] nevertheless produces a warning.  */
#ifndef _GL_ATTRIBUTE_MAYBE_UNUSED
# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE
#  if defined __clang__ && defined __cplusplus
#   if !defined __apple_build_version__ && __clang_major__ >= 10
#    define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
#   endif
#  elif _GL_HAVE___HAS_C_ATTRIBUTE
#   if __has_c_attribute (__maybe_unused__)
#    define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
#   endif
#  endif
# endif
# ifndef _GL_ATTRIBUTE_MAYBE_UNUSED
#  define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED
# endif
#endif
/* Alternative spelling of this macro, for convenience and for
   compatibility with glibc/include/libc-symbols.h.  */
#define _GL_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
/* Earlier spellings of this macro.  */
#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED

/* _GL_ATTRIBUTE_NODISCARD declares that the caller of the function should not
   discard the return value.  The compiler may warn if the caller does not use
   the return value, unless the caller uses something like ignore_value.  */
/* Applies to: function, enumeration, class.  */
#ifndef _GL_ATTRIBUTE_NODISCARD
# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE
#  if defined __clang__ && defined __cplusplus
  /* With clang up to 15.0.6 (at least), in C++ mode, [[__nodiscard__]] produces
     a warning.
     The 1000 below means a yet unknown threshold.  When clang++ version X
     starts supporting [[__nodiscard__]] without warning about it, you can
     replace the 1000 with X.  */
#   if __clang_major__ >= 1000
#    define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
#   endif
#  elif _GL_HAVE___HAS_C_ATTRIBUTE
#   if __has_c_attribute (__nodiscard__)
#    define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
#   endif
#  endif
# endif
# if !defined _GL_ATTRIBUTE_NODISCARD && _GL_HAS_ATTRIBUTE (warn_unused_result)
#  define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
# endif
# ifndef _GL_ATTRIBUTE_NODISCARD
#  define _GL_ATTRIBUTE_NODISCARD
# endif
#endif

/* _GL_ATTRIBUTE_NOINLINE tells that the compiler should not inline the
   function.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_NOINLINE
# if _GL_HAS_ATTRIBUTE (noinline)
#  define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
# else
#  define _GL_ATTRIBUTE_NOINLINE
# endif
#endif

/* _GL_ATTRIBUTE_NONNULL ((N1, N2,...)) declares that the arguments N1, N2,...
   must not be NULL.
   _GL_ATTRIBUTE_NONNULL () declares that all pointer arguments must not be
   null.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_NONNULL
# if _GL_HAS_ATTRIBUTE (nonnull)
#  define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
# else
#  define _GL_ATTRIBUTE_NONNULL(args)
# endif
#endif

/* _GL_ATTRIBUTE_NONSTRING declares that the contents of a character array is
   not meant to be NUL-terminated.  */
/* Applies to: struct/union members and variables that are arrays of element
   type '[[un]signed] char'.  */
#ifndef _GL_ATTRIBUTE_NONSTRING
# if _GL_HAS_ATTRIBUTE (nonstring)
#  define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
# else
#  define _GL_ATTRIBUTE_NONSTRING
# endif
#endif

/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead.  */

/* _GL_ATTRIBUTE_NOTHROW declares that the function does not throw exceptions.
 */
/* Applies to: functions.  */
/* After a function's parameter list, this attribute must come first, before
   other attributes.  */
#ifndef _GL_ATTRIBUTE_NOTHROW
# if defined __cplusplus
#  if _GL_GNUC_PREREQ (2, 8) || __clang_major__ >= 4
#   if __cplusplus >= 201103L
#    define _GL_ATTRIBUTE_NOTHROW noexcept (true)
#   else
#    define _GL_ATTRIBUTE_NOTHROW throw ()
#   endif
#  else
#   define _GL_ATTRIBUTE_NOTHROW
#  endif
# else
#  if _GL_HAS_ATTRIBUTE (nothrow)
#   define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
#  else
#   define _GL_ATTRIBUTE_NOTHROW
#  endif
# endif
#endif

/* _GL_ATTRIBUTE_PACKED declares:
   For struct members: The member has the smallest possible alignment.
   For struct, union, class: All members have the smallest possible alignment,
   minimizing the memory required.  */
/* Applies to: struct members, struct, union,
   in C++ also: class.  */
#ifndef _GL_ATTRIBUTE_PACKED
/* Oracle Studio 12.6 miscompiles code with __attribute__ ((__packed__)) despite
   __has_attribute OK.  */
# if _GL_HAS_ATTRIBUTE (packed) && !defined __SUNPRO_C
#  define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
# else
#  define _GL_ATTRIBUTE_PACKED
# endif
#endif

/* _GL_ATTRIBUTE_PURE declares:
   It is OK for a compiler to move calls to the function and to omit
   calls to the function if another call has the same arguments or the
   result is not used, and if observable state is the same.
   This attribute is safe for a function that does not affect observable state
   and always returns exactly once.
   (This attribute is looser than _GL_ATTRIBUTE_CONST because the function
   can depend on observable state.  It is stricter than
   _GL_ATTRIBUTE_REPRODUCIBLE because the function must return exactly
   once and cannot affect state addressed by its arguments.)  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_PURE
# if _GL_HAS_ATTRIBUTE (pure)
#  define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
# else
#  define _GL_ATTRIBUTE_PURE _GL_ATTRIBUTE_REPRODUCIBLE
# endif
#endif

/* _GL_ATTRIBUTE_REPRODUCIBLE declares:
   It is OK for a compiler to move calls to the function and to omit duplicate
   calls to the function with the same arguments, so long as the state
   addressed by its arguments is the same and is updated in time for
   the rest of the program.
   This attribute is safe for a function that is effectless and idempotent; see
   ISO C 23 § 6.7.12.7 for a definition of these terms.
   (This attribute is looser than _GL_ATTRIBUTE_UNSEQUENCED because
   the function need not be stateless and idempotent.  It is looser
   than _GL_ATTRIBUTE_PURE because the function need not return
   exactly once and can affect state addressed by its arguments.)
   See also <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2956.htm> and
   <https://stackoverflow.com/questions/76847905/>.  */
/* Applies to: functions, pointer to functions, function types.  */
#ifndef _GL_ATTRIBUTE_REPRODUCIBLE
/* This may be revisited when gcc and clang support [[reproducible]] or possibly
   __attribute__ ((__reproducible__)).  */
# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE
#  if _GL_HAS_ATTRIBUTE (reproducible)
#   define _GL_ATTRIBUTE_REPRODUCIBLE [[reproducible]]
#  endif
# endif
# ifndef _GL_ATTRIBUTE_REPRODUCIBLE
#  define _GL_ATTRIBUTE_REPRODUCIBLE
# endif
#endif

/* _GL_ATTRIBUTE_RETURNS_NONNULL declares that the function's return value is
   a non-NULL pointer.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_RETURNS_NONNULL
# if _GL_HAS_ATTRIBUTE (returns_nonnull)
#  define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
# else
#  define _GL_ATTRIBUTE_RETURNS_NONNULL
# endif
#endif

/* _GL_ATTRIBUTE_SENTINEL(pos) declares that the variadic function expects a
   trailing NULL argument.
   _GL_ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99).
   _GL_ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL.  */
/* Applies to: functions.  */
#ifndef _GL_ATTRIBUTE_SENTINEL
# if _GL_HAS_ATTRIBUTE (sentinel)
#  define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
# else
#  define _GL_ATTRIBUTE_SENTINEL(pos)
# endif
#endif

/* _GL_ATTRIBUTE_UNSEQUENCED declares:
   It is OK for a compiler to move calls to the function and to omit duplicate
   calls to the function with the same arguments, so long as the state
   addressed by its arguments is the same.
   This attribute is safe for a function that is effectless, idempotent,
   stateless, and independent; see ISO C 23 § 6.7.12.7 for a definition of
   these terms.
   (This attribute is stricter than _GL_ATTRIBUTE_REPRODUCIBLE because
   the function must be stateless and independent.  It is looser than
   _GL_ATTRIBUTE_CONST because the function need not return exactly
   once and can depend on state addressed by its arguments.)
   See also <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2956.htm> and
   <https://stackoverflow.com/questions/76847905/>.  */
/* Applies to: functions, pointer to functions, function types.  */
#ifndef _GL_ATTRIBUTE_UNSEQUENCED
/* This may be revisited when gcc and clang support [[unsequenced]] or possibly
   __attribute__ ((__unsequenced__)).  */
# ifndef _GL_BRACKET_BEFORE_ATTRIBUTE
#  if _GL_HAS_ATTRIBUTE (unsequenced)
#   define _GL_ATTRIBUTE_UNSEQUENCED [[unsequenced]]
#  endif
# endif
# ifndef _GL_ATTRIBUTE_UNSEQUENCED
#  define _GL_ATTRIBUTE_UNSEQUENCED
# endif
#endif

/* A helper macro.  Don't use it directly.  */
#ifndef _GL_ATTRIBUTE_UNUSED
# if _GL_HAS_ATTRIBUTE (unused)
#  define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
# else
#  define _GL_ATTRIBUTE_UNUSED
# endif
#endif


/* _GL_UNUSED_LABEL; declares that it is not a programming mistake if the
   immediately preceding label is not used.  The compiler should not warn
   if the label is not used.  */
/* Applies to: label (both in C and C++).  */
/* Note that g++ < 4.5 does not support the '__attribute__ ((__unused__)) ;'
   syntax.  But clang does.  */
#ifndef _GL_UNUSED_LABEL
# if !(defined __cplusplus && !_GL_GNUC_PREREQ (4, 5)) || defined __clang__
#  define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED
# else
#  define _GL_UNUSED_LABEL
# endif
#endif

/* The following attributes enable detection of multithread-safety problems
   and resource leaks at compile-time, by clang ≥ 15, when the warning option
   -Wthread-safety is enabled.  For usage, see
   <https://clang.llvm.org/docs/ThreadSafetyAnalysis.html>.  */
#ifndef _GL_ATTRIBUTE_CAPABILITY_TYPE
# if __clang_major__ >= 15
#  define _GL_ATTRIBUTE_CAPABILITY_TYPE(concept) \
     __attribute__ ((__capability__ (concept)))
# else
#  define _GL_ATTRIBUTE_CAPABILITY_TYPE(concept)
# endif
#endif
#ifndef _GL_ATTRIBUTE_ACQUIRE_CAPABILITY
# if __clang_major__ >= 15
#  define _GL_ATTRIBUTE_ACQUIRE_CAPABILITY(resource) \
     __attribute__ ((__acquire_capability__ (resource)))
# else
#  define _GL_ATTRIBUTE_ACQUIRE_CAPABILITY(resource)
# endif
#endif
#ifndef _GL_ATTRIBUTE_RELEASE_CAPABILITY
# if __clang_major__ >= 15
#  define _GL_ATTRIBUTE_RELEASE_CAPABILITY(resource) \
     __attribute__ ((__release_capability__ (resource)))
# else
#  define _GL_ATTRIBUTE_RELEASE_CAPABILITY(resource)
# endif
#endif


/* In C++, there is the concept of "language linkage", that encompasses
    name mangling and function calling conventions.
    The following macros start and end a block of "C" linkage.  */
#ifdef __cplusplus
# define _GL_BEGIN_C_LINKAGE extern "C" {
# define _GL_END_C_LINKAGE }
#else
# define _GL_BEGIN_C_LINKAGE
# define _GL_END_C_LINKAGE
#endif


/* Define to a type to use for 'error_t' if it is not otherwise available. */
#undef error_t

/* 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 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__
# define __GNUC_STDC_INLINE__ 1
#endif

/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
   n1 and n2 are expressions without side effects, that evaluate to real
   numbers (excluding NaN).
   It returns
     1  if n1 > n2
     0  if n1 == n2
     -1 if n1 < n2
   The naïve code   (n1 > n2 ? 1 : n1 < n2 ? -1 : 0)  produces a conditional
   jump with nearly all GCC versions up to GCC 10.
   This variant     (n1 < n2 ? -1 : n1 > n2)  produces a conditional with many
   GCC versions up to GCC 9.
   The better code  (n1 > n2) - (n1 < n2)  from Hacker's Delight § 2-9
   avoids conditional jumps in all GCC versions >= 3.4.  */
#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))

