diff options
Diffstat (limited to 'config.h.in')
| -rw-r--r-- | config.h.in | 1124 |
1 files changed, 952 insertions, 172 deletions
diff --git a/config.h.in b/config.h.in index f5b9d3e..408c261 100644 --- a/config.h.in +++ b/config.h.in @@ -15,15 +15,257 @@ /* Define to the number of bits in type 'wint_t'. */ #undef BITSIZEOF_WINT_T +/* Define to 1 if using 'alloca.c'. */ +#undef C_ALLOCA + +/* Define this to 1 if F_DUPFD behavior does not match POSIX */ +#undef FCNTL_DUPFD_BUGGY + +/* Define to 1 if fopen() fails to recognize a trailing slash. */ +#undef FOPEN_TRAILING_SLASH_BUG + +/* Define to 1 if the system's ftello function has the Solaris bug. */ +#undef FTELLO_BROKEN_AFTER_SWITCHING_FROM_READ_TO_WRITE + +/* Define to 1 if the system's ftello function has the macOS bug. */ +#undef FTELLO_BROKEN_AFTER_UNGETC + +/* Define to 1 if ungetc is broken when used on arbitrary bytes. */ +#undef FUNC_UNGETC_BROKEN + +/* Define this to 'void' or 'struct timezone' to match the system's + declaration of the second argument to gettimeofday. */ +#undef GETTIMEOFDAY_TIMEZONE + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module fopen-gnu shall be considered present. */ +#undef GNULIB_FOPEN_GNU + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module fscanf shall be considered present. */ +#undef GNULIB_FSCANF + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module msvc-nothrow shall be considered present. */ +#undef GNULIB_MSVC_NOTHROW + +/* Define to 1 if printf and friends should be labeled with attribute + "__gnu_printf__" instead of "__printf__" */ +#undef GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU + +/* Define to a C preprocessor expression that evaluates to 1 or 0, depending + whether the gnulib module scanf shall be considered present. */ +#undef GNULIB_SCANF + +/* Define to 1 when the gnulib module cloexec should be tested. */ +#undef GNULIB_TEST_CLOEXEC + +/* Define to 1 when the gnulib module close should be tested. */ +#undef GNULIB_TEST_CLOSE + +/* Define to 1 when the gnulib module dup2 should be tested. */ +#undef GNULIB_TEST_DUP2 + +/* Define to 1 when the gnulib module explicit_bzero should be tested. */ +#undef GNULIB_TEST_EXPLICIT_BZERO + +/* Define to 1 when the gnulib module fcntl should be tested. */ +#undef GNULIB_TEST_FCNTL + +/* Define to 1 when the gnulib module fgetc should be tested. */ +#undef GNULIB_TEST_FGETC + +/* Define to 1 when the gnulib module fgets should be tested. */ +#undef GNULIB_TEST_FGETS + +/* Define to 1 when the gnulib module fopen should be tested. */ +#undef GNULIB_TEST_FOPEN + +/* Define to 1 when the gnulib module fopen-gnu should be tested. */ +#undef GNULIB_TEST_FOPEN_GNU + +/* Define to 1 when the gnulib module fprintf should be tested. */ +#undef GNULIB_TEST_FPRINTF + +/* Define to 1 when the gnulib module fputc should be tested. */ +#undef GNULIB_TEST_FPUTC + +/* Define to 1 when the gnulib module fputs should be tested. */ +#undef GNULIB_TEST_FPUTS + +/* Define to 1 when the gnulib module fread should be tested. */ +#undef GNULIB_TEST_FREAD + +/* Define to 1 when the gnulib module free-posix should be tested. */ +#undef GNULIB_TEST_FREE_POSIX + +/* Define to 1 when the gnulib module fscanf should be tested. */ +#undef GNULIB_TEST_FSCANF + +/* Define to 1 when the gnulib module fstat should be tested. */ +#undef GNULIB_TEST_FSTAT + +/* Define to 1 when the gnulib module ftell should be tested. */ +#undef GNULIB_TEST_FTELL + +/* Define to 1 when the gnulib module ftello should be tested. */ +#undef GNULIB_TEST_FTELLO + +/* Define to 1 when the gnulib module fwrite should be tested. */ +#undef GNULIB_TEST_FWRITE + +/* Define to 1 when the gnulib module getc should be tested. */ +#undef GNULIB_TEST_GETC + +/* Define to 1 when the gnulib module getchar should be tested. */ +#undef GNULIB_TEST_GETCHAR + +/* Define to 1 when the gnulib module getdtablesize should be tested. */ +#undef GNULIB_TEST_GETDTABLESIZE + +/* Define to 1 when the gnulib module getopt-posix should be tested. */ +#undef GNULIB_TEST_GETOPT_POSIX + +/* Define to 1 when the gnulib module gettimeofday should be tested. */ +#undef GNULIB_TEST_GETTIMEOFDAY + +/* Define to 1 when the gnulib module lseek should be tested. */ +#undef GNULIB_TEST_LSEEK + +/* Define to 1 when the gnulib module malloc-posix should be tested. */ +#undef GNULIB_TEST_MALLOC_POSIX + +/* Define to 1 when the gnulib module open should be tested. */ +#undef GNULIB_TEST_OPEN + +/* Define to 1 when the gnulib module printf should be tested. */ +#undef GNULIB_TEST_PRINTF + +/* Define to 1 when the gnulib module putc should be tested. */ +#undef GNULIB_TEST_PUTC + +/* Define to 1 when the gnulib module putchar should be tested. */ +#undef GNULIB_TEST_PUTCHAR + +/* Define to 1 when the gnulib module puts should be tested. */ +#undef GNULIB_TEST_PUTS + +/* Define to 1 when the gnulib module realloc-posix should be tested. */ +#undef GNULIB_TEST_REALLOC_POSIX + +/* Define to 1 when the gnulib module scanf should be tested. */ +#undef GNULIB_TEST_SCANF + +/* Define to 1 when the gnulib module stat should be tested. */ +#undef GNULIB_TEST_STAT + /* Define to 1 when the gnulib module strverscmp should be tested. */ #undef GNULIB_TEST_STRVERSCMP +/* Define to 1 when the gnulib module vfprintf should be tested. */ +#undef GNULIB_TEST_VFPRINTF + +/* Define to 1 when the gnulib module vprintf should be tested. */ +#undef GNULIB_TEST_VPRINTF + +/* Define to 1 if you have 'alloca' after including <alloca.h>, a header that + may be supplied by this distribution. */ +#undef HAVE_ALLOCA + +/* Define to 1 if <alloca.h> works. */ +#undef HAVE_ALLOCA_H + +/* Define to 1 if you have the `clock_getres' function. */ +#undef HAVE_CLOCK_GETRES + /* Define to 1 if you have the `clock_gettime' function. */ #undef HAVE_CLOCK_GETTIME +/* Define to 1 if you have the `clock_settime' function. */ +#undef HAVE_CLOCK_SETTIME + +/* Define to 1 if you have the <crtdefs.h> header file. */ +#undef HAVE_CRTDEFS_H + +/* Define to 1 if C supports variable-length arrays. */ +#undef HAVE_C_VARARRAYS + +/* Define to 1 if you have the declaration of `ecvt', and to 0 if you don't. + */ +#undef HAVE_DECL_ECVT + +/* Define to 1 if you have the declaration of `execvpe', and to 0 if you + don't. */ +#undef HAVE_DECL_EXECVPE + +/* Define to 1 if you have the declaration of `fcloseall', and to 0 if you + don't. */ +#undef HAVE_DECL_FCLOSEALL + +/* Define to 1 if you have the declaration of `fcvt', and to 0 if you don't. + */ +#undef HAVE_DECL_FCVT + +/* Define to 1 if you have the declaration of `ftello', and to 0 if you don't. + */ +#undef HAVE_DECL_FTELLO + +/* Define to 1 if you have the declaration of `gcvt', and to 0 if you don't. + */ +#undef HAVE_DECL_GCVT + +/* Define to 1 if you have the declaration of `getdtablesize', and to 0 if you + don't. */ +#undef HAVE_DECL_GETDTABLESIZE + +/* Define to 1 if you have the declaration of `program_invocation_name', and + to 0 if you don't. */ +#undef HAVE_DECL_PROGRAM_INVOCATION_NAME + +/* Define to 1 if you have the declaration of `program_invocation_short_name', + and to 0 if you don't. */ +#undef HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME + +/* Define to 1 if you have the declaration of `wcsdup', and to 0 if you don't. + */ +#undef HAVE_DECL_WCSDUP + /* Define to 1 if you have the <dlfcn.h> header file. */ #undef HAVE_DLFCN_H +/* Define to 1 if you have the `explicit_bzero' function. */ +#undef HAVE_EXPLICIT_BZERO + +/* Define to 1 if you have the `explicit_memset' function. */ +#undef HAVE_EXPLICIT_MEMSET + +/* Define to 1 if you have the `fcntl' function. */ +#undef HAVE_FCNTL + +/* Define to 1 if you have the <features.h> header file. */ +#undef HAVE_FEATURES_H + +/* Define to 1 if you have the `fmemopen' function. */ +#undef HAVE_FMEMOPEN + +/* Define if the 'free' function is guaranteed to preserve errno. */ +#undef HAVE_FREE_POSIX + +/* Define to 1 if fseeko (and presumably ftello) exists and is declared. */ +#undef HAVE_FSEEKO + +/* Define to 1 if you have the `getdtablesize' function. */ +#undef HAVE_GETDTABLESIZE + +/* Define to 1 if you have the <getopt.h> header file. */ +#undef HAVE_GETOPT_H + +/* Define to 1 if you have the `getopt_long_only' function. */ +#undef HAVE_GETOPT_LONG_ONLY + +/* Define to 1 if you have the `gettimeofday' function. */ +#undef HAVE_GETTIMEOFDAY + /* Define to 1 if you have the <inttypes.h> header file. */ #undef HAVE_INTTYPES_H @@ -33,8 +275,17 @@ /* Define to 1 if the system has the type 'long long int'. */ #undef HAVE_LONG_LONG_INT -/* Define to 1 if you have the <memory.h> header file. */ -#undef HAVE_MEMORY_H +/* Define to 1 if you have the `lstat' function. */ +#undef HAVE_LSTAT + +/* Define if malloc, realloc, and calloc set errno on allocation failure. */ +#undef HAVE_MALLOC_POSIX + +/* Define to 1 if you have the `memset_s' function. */ +#undef HAVE_MEMSET_S + +/* Define to 1 if you have the <minix/config.h> header file. */ +#undef HAVE_MINIX_CONFIG_H /* Define to 1 if <limits.h> defines the MIN and MAX macros. */ #undef HAVE_MINMAX_IN_LIMITS_H @@ -42,6 +293,16 @@ /* Define to 1 if <sys/param.h> defines the MIN and MAX macros. */ #undef HAVE_MINMAX_IN_SYS_PARAM_H +/* Define to 1 on MSVC platforms that have the "invalid parameter handler" + concept. */ +#undef HAVE_MSVC_INVALID_PARAMETER_HANDLER + +/* Define to 1 if you have the <sdkddkver.h> header file. */ +#undef HAVE_SDKDDKVER_H + +/* Define to 1 if you have the `setdtablesize' function. */ +#undef HAVE_SETDTABLESIZE + /* Define to 1 if 'sig_atomic_t' is a signed integer type. */ #undef HAVE_SIGNED_SIG_ATOMIC_T @@ -51,9 +312,15 @@ /* Define to 1 if 'wint_t' is a signed integer type. */ #undef HAVE_SIGNED_WINT_T +/* Define to 1 if you have the <stdckdint.h> header file. */ +#undef HAVE_STDCKDINT_H + /* 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 @@ -63,21 +330,60 @@ /* Define to 1 if you have the <string.h> header file. */ #undef HAVE_STRING_H +/* Define to 1 if `st_atimensec' is a member of `struct stat'. */ +#undef HAVE_STRUCT_STAT_ST_ATIMENSEC + +/* Define to 1 if `st_atimespec.tv_nsec' is a member of `struct stat'. */ +#undef HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC + +/* Define to 1 if `st_atim.st__tim.tv_nsec' is a member of `struct stat'. */ +#undef HAVE_STRUCT_STAT_ST_ATIM_ST__TIM_TV_NSEC + +/* Define to 1 if `st_atim.tv_nsec' is a member of `struct stat'. */ +#undef HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC + +/* Define to 1 if `st_birthtimensec' is a member of `struct stat'. */ +#undef HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC + +/* Define to 1 if `st_birthtimespec.tv_nsec' is a member of `struct stat'. */ +#undef HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC + +/* Define to 1 if `st_birthtim.tv_nsec' is a member of `struct stat'. */ +#undef HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC + /* Define to 1 if you have the `strverscmp' function. */ #undef HAVE_STRVERSCMP +/* Define to 1 if you have the `symlink' function. */ +#undef HAVE_SYMLINK + /* Define to 1 if you have the <sys/bitypes.h> header file. */ #undef HAVE_SYS_BITYPES_H +/* Define to 1 if you have the <sys/cdefs.h> header file. */ +#undef HAVE_SYS_CDEFS_H + /* Define to 1 if you have the <sys/inttypes.h> header file. */ #undef HAVE_SYS_INTTYPES_H +/* Define to 1 if you have the <sys/param.h> header file. */ +#undef HAVE_SYS_PARAM_H + +/* Define to 1 if you have the <sys/socket.h> header file. */ +#undef HAVE_SYS_SOCKET_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/time.h> header file. */ +#undef HAVE_SYS_TIME_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 `timespec_get' function. */ +#undef HAVE_TIMESPEC_GET + /* Define to 1 if you have the <unistd.h> header file. */ #undef HAVE_UNISTD_H @@ -94,15 +400,156 @@ /* Define if you have the 'wchar_t' type. */ #undef HAVE_WCHAR_T +/* Define to 1 if you have the <winsock2.h> header file. */ +#undef HAVE_WINSOCK2_H + /* Define if you have the 'wint_t' type. */ #undef HAVE_WINT_T +/* Define to 1 if O_NOATIME works. */ +#undef HAVE_WORKING_O_NOATIME + +/* Define to 1 if O_NOFOLLOW works. */ +#undef HAVE_WORKING_O_NOFOLLOW + +/* Define to 1 if the system has the type `_Bool'. */ +#undef HAVE__BOOL + +/* Define to 1 if you have the `_ftelli64' function. */ +#undef HAVE__FTELLI64 + +/* Define to 1 if you have the `_set_invalid_parameter_handler' function. */ +#undef HAVE__SET_INVALID_PARAMETER_HANDLER + +/* Define to 1 if ctype.h defines __header_inline. */ +#undef HAVE___HEADER_INLINE + +/* Please see the Gnulib manual for how to use these macros. + + Suppress extern inline with HP-UX cc, as it appears to be broken; see + <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>. + + Suppress extern inline with Sun C in standards-conformance mode, as it + mishandles inline functions that call each other. E.g., for 'inline void f + (void) { } inline void g (void) { f (); }', c99 incorrectly complains + 'reference to static identifier "f" in extern inline function'. + This bug was observed with Oracle Developer Studio 12.6 + (Sun C 5.15 SunOS_sparc 2017/05/30). + + Suppress extern inline (with or without __attribute__ ((__gnu_inline__))) + on configurations that mistakenly use 'static inline' to implement + functions or macros in standard C headers like <ctype.h>. For example, + if isdigit is mistakenly implemented via a static inline function, + a program containing an extern inline function that calls isdigit + may not work since the C standard prohibits extern inline functions + from calling static functions (ISO C 99 section 6.7.4.(3). + This bug is known to occur on: + + OS X 10.8 and earlier; see: + https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html + + DragonFly; see + http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log + + FreeBSD; see: + https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html + + OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and + for clang but remains for g++; see <https://trac.macports.org/ticket/41033>. + Assume DragonFly and FreeBSD will be similar. + + GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99 + inline semantics, unless -fgnu89-inline is used. It defines a macro + __GNUC_STDC_INLINE__ to indicate this situation or a macro + __GNUC_GNU_INLINE__ to indicate the opposite situation. + GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline + semantics but warns, unless -fgnu89-inline is used: + warning: C99 inline functions are not supported; using GNU89 + warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute + It defines a macro __GNUC_GNU_INLINE__ to indicate this situation. + */ +#if (((defined __APPLE__ && defined __MACH__) \ + || defined __DragonFly__ || defined __FreeBSD__) \ + && (defined HAVE___HEADER_INLINE \ + ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \ + && ! defined __clang__) \ + : ((! defined _DONT_USE_CTYPE_INLINE_ \ + && (defined __GNUC__ || defined __cplusplus)) \ + || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \ + && defined __GNUC__ && ! defined __cplusplus)))) +# define _GL_EXTERN_INLINE_STDHEADER_BUG +#endif +#if ((__GNUC__ \ + ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ + : (199901L <= __STDC_VERSION__ \ + && !defined __HP_cc \ + && !defined __PGI \ + && !(defined __SUNPRO_C && __STDC__))) \ + && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) +# define _GL_INLINE inline +# define _GL_EXTERN_INLINE extern inline +# define _GL_EXTERN_INLINE_IN_USE +#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \ + && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) +# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__ + /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */ +# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__)) +# else +# define _GL_INLINE extern inline +# endif +# define _GL_EXTERN_INLINE extern +# define _GL_EXTERN_INLINE_IN_USE +#else +# define _GL_INLINE _GL_UNUSED static +# define _GL_EXTERN_INLINE _GL_UNUSED static +#endif + +/* In GCC 4.6 (inclusive) to 5.1 (exclusive), + suppress bogus "no previous prototype for 'FOO'" + and "no previous declaration for 'FOO'" diagnostics, + when FOO is an inline function in the header; see + <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113> and + <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877>. */ +#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__ +# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ +# define _GL_INLINE_HEADER_CONST_PRAGMA +# else +# define _GL_INLINE_HEADER_CONST_PRAGMA \ + _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"") +# endif +# define _GL_INLINE_HEADER_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \ + _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \ + _GL_INLINE_HEADER_CONST_PRAGMA +# define _GL_INLINE_HEADER_END \ + _Pragma ("GCC diagnostic pop") +#else +# define _GL_INLINE_HEADER_BEGIN +# define _GL_INLINE_HEADER_END +#endif + /* Define to 1 if the compiler supports the keyword '__inline'. */ #undef HAVE___INLINE +/* Define to 1 if lseek does not detect pipes. */ +#undef LSEEK_PIPE_BROKEN + /* Define to the sub-directory where libtool stores uninstalled libraries. */ #undef LT_OBJDIR +/* If malloc(0) is != NULL, define this to 1. Otherwise define this to 0. */ +#undef MALLOC_0_IS_NONNULL + +/* Use GNU style printf and scanf. */ +#ifndef __USE_MINGW_ANSI_STDIO +# undef __USE_MINGW_ANSI_STDIO +#endif + + +/* Define to 1 if open() fails to recognize a trailing slash. */ +#undef OPEN_TRAILING_SLASH_BUG + /* Name of package */ #undef PACKAGE @@ -112,6 +559,15 @@ /* Define to the full name of this package. */ #undef PACKAGE_NAME +/* String identifying the packager of this software */ +#undef PACKAGE_PACKAGER + +/* Packager info for bug reports (URL/e-mail/...) */ +#undef PACKAGE_PACKAGER_BUG_REPORTS + +/* Packager-specific version information */ +#undef PACKAGE_PACKAGER_VERSION + /* Define to the full name and version of this package. */ #undef PACKAGE_STRING @@ -124,10 +580,18 @@ /* Define to the version of this package. */ #undef PACKAGE_VERSION +/* Define to the type that is the result of default argument promotions of + type mode_t. */ +#undef PROMOTED_MODE_T + /* Define to l, ll, u, ul, ull, etc., as suitable for constants of type 'ptrdiff_t'. */ #undef PTRDIFF_T_SUFFIX +/* Define to 1 if stat needs help when passed a file name with a trailing + slash */ +#undef REPLACE_FUNC_STAT_FILE + /* Define to l, ll, u, ul, ull, etc., as suitable for constants of type 'sig_atomic_t'. */ #undef SIG_ATOMIC_T_SUFFIX @@ -142,9 +606,26 @@ 'size_t'. */ #undef SIZE_T_SUFFIX -/* Define to 1 if you have the ANSI C header files. */ +/* If using the C implementation of alloca, define if you know the + direction of stack growth for your system; otherwise it will be + automatically deduced at runtime. + STACK_DIRECTION > 0 => grows toward higher addresses + STACK_DIRECTION < 0 => grows toward lower addresses + STACK_DIRECTION = 0 => direction of growth unknown */ +#undef STACK_DIRECTION + +/* Define to 1 if the `S_IS*' macros in <sys/stat.h> do not work properly. */ +#undef STAT_MACROS_BROKEN + +/* Define to 1 if all of the C90 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 +/* Define to 1 if the type of the st_atim member of a struct stat is struct + timespec. */ +#undef TYPEOF_STRUCT_STAT_ST_ATIM_IS_STRUCT_TIMESPEC + /* Enable extensions on AIX 3, Interix. */ #ifndef _ALL_SOURCE # undef _ALL_SOURCE @@ -153,19 +634,44 @@ #ifndef _DARWIN_C_SOURCE # undef _DARWIN_C_SOURCE #endif +/* Enable general extensions on Solaris. */ +#ifndef __EXTENSIONS__ +# undef __EXTENSIONS__ +#endif /* Enable GNU extensions on systems that have them. */ #ifndef _GNU_SOURCE # undef _GNU_SOURCE #endif -/* Enable NetBSD extensions on NetBSD. */ +/* Enable X/Open compliant socket functions that do not require linking + with -lxnet on HP-UX 11.11. */ +#ifndef _HPUX_ALT_XOPEN_SOCKET_API +# undef _HPUX_ALT_XOPEN_SOCKET_API +#endif +/* Identify the host operating system as Minix. + This macro does not affect the system headers' behavior. + A future release of Autoconf may stop defining this macro. */ +#ifndef _MINIX +# undef _MINIX +#endif +/* Enable general extensions on NetBSD. + Enable NetBSD compatibility extensions on Minix. */ #ifndef _NETBSD_SOURCE # undef _NETBSD_SOURCE #endif -/* Enable OpenBSD extensions on NetBSD. */ +/* Enable OpenBSD compatibility extensions on NetBSD. + Oddly enough, this does nothing on OpenBSD. */ #ifndef _OPENBSD_SOURCE # undef _OPENBSD_SOURCE #endif -/* Enable threading extensions on Solaris. */ +/* Define to 1 if needed for POSIX-compatible behavior. */ +#ifndef _POSIX_SOURCE +# undef _POSIX_SOURCE +#endif +/* Define to 2 if needed for POSIX-compatible behavior. */ +#ifndef _POSIX_1_SOURCE +# undef _POSIX_1_SOURCE +#endif +/* Enable POSIX-compatible threading on Solaris. */ #ifndef _POSIX_PTHREAD_SEMANTICS # undef _POSIX_PTHREAD_SEMANTICS #endif @@ -201,21 +707,11 @@ #ifndef _TANDEM_SOURCE # undef _TANDEM_SOURCE #endif -/* Enable X/Open extensions if necessary. HP-UX 11.11 defines - mbstate_t only if _XOPEN_SOURCE is defined to 500, regardless of - whether compiling with -Ae or -D_HPUX_SOURCE=1. */ +/* Enable X/Open extensions. Define to 500 only if necessary + to make mbstate_t available. */ #ifndef _XOPEN_SOURCE # undef _XOPEN_SOURCE #endif -/* Enable X/Open compliant socket functions that do not require linking - with -lxnet on HP-UX 11.11. */ -#ifndef _HPUX_ALT_XOPEN_SOCKET_API -# undef _HPUX_ALT_XOPEN_SOCKET_API -#endif -/* Enable general extensions on Solaris. */ -#ifndef __EXTENSIONS__ -# undef __EXTENSIONS__ -#endif /* Version number of package */ @@ -229,23 +725,49 @@ 'wint_t'. */ #undef WINT_T_SUFFIX -/* Define to 1 if on MINIX. */ -#undef _MINIX +/* Number of bits in a file offset, on hosts where this is settable. */ +#undef _FILE_OFFSET_BITS + +/* True if the compiler says it groks GNU C version MAJOR.MINOR. */ +#if defined __GNUC__ && defined __GNUC_MINOR__ +# define _GL_GNUC_PREREQ(major, minor) \ + ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__)) +#else +# define _GL_GNUC_PREREQ(major, minor) 0 +#endif + + +/* Define to enable the declarations of ISO C 11 types and functions. */ +#undef _ISOC11_SOURCE + +/* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */ +#undef _LARGEFILE_SOURCE -/* Define to 1 to make NetBSD features available. MINIX 3 needs this. */ -#undef _NETBSD_SOURCE +/* Define for large files, on AIX-style hosts. */ +#undef _LARGE_FILES /* The _Noreturn keyword of C11. */ #ifndef _Noreturn # if (defined __cplusplus \ && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \ - || (defined _MSC_VER && 1900 <= _MSC_VER))) + || (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 __cplusplus || defined __clang__) \ - && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \ - || 4 < __GNUC__ + (7 <= __GNUC_MINOR__))) + && (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 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 0x5110 <= __SUNPRO_C +# 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) @@ -255,28 +777,35 @@ #endif -/* Define to 2 if the system does not provide POSIX.1 features except with - this defined. */ -#undef _POSIX_1_SOURCE - -/* Define to 1 if you need to in order for 'stat' and other things to work. */ -#undef _POSIX_SOURCE +/* Number of bits in a timestamp, on hosts where this is settable. */ +#undef _TIME_BITS /* For standard stat data types on VMS. */ #undef _USE_STD_STAT +/* Define to rpl_ if the getopt replacement functions and variables should be + used. */ +#undef __GETOPT_PREFIX + +/* For 64-bit time_t on 32-bit mingw. */ +#undef __MINGW_USE_VC2005_COMPAT + /* Define to 1 if the system <stdint.h> predates C++11. */ #undef __STDC_CONSTANT_MACROS /* Define to 1 if the system <stdint.h> predates C++11. */ #undef __STDC_LIMIT_MACROS +/* Define to 1 if C does not support variable-length arrays, and if the + compiler does not already define this. */ +#undef __STDC_NO_VLA__ + /* 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 - <http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04> + <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 @@ -298,110 +827,379 @@ #define _GL_ASYNC_SAFE -/* Please see the Gnulib manual for how to use these macros. +/* Attributes. */ +#if (defined __has_attribute \ + && (!defined __clang_minor__ \ + || (defined __apple_build_version__ \ + ? 6000000 <= __apple_build_version__ \ + : 3 < __clang_major__ + (5 <= __clang_minor__)))) +# 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_returns_nonnull _GL_GNUC_PREREQ (4, 9) +# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0) +# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7) +# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4) +#endif - Suppress extern inline with HP-UX cc, as it appears to be broken; see - <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>. +#ifdef __has_c_attribute +# if ((defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710 \ + && _GL_GNUC_PREREQ (4, 6)) +# pragma GCC diagnostic ignored "-Wpedantic" +# endif +# define _GL_HAS_C_ATTRIBUTE(attr) __has_c_attribute (__##attr##__) +#else +# define _GL_HAS_C_ATTRIBUTE(attr) 0 +#endif - Suppress extern inline with Sun C in standards-conformance mode, as it - mishandles inline functions that call each other. E.g., for 'inline void f - (void) { } inline void g (void) { f (); }', c99 incorrectly complains - 'reference to static identifier "f" in extern inline function'. - This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16. - Suppress extern inline (with or without __attribute__ ((__gnu_inline__))) - on configurations that mistakenly use 'static inline' to implement - functions or macros in standard C headers like <ctype.h>. For example, - if isdigit is mistakenly implemented via a static inline function, - a program containing an extern inline function that calls isdigit - may not work since the C standard prohibits extern inline functions - from calling static functions (ISO C 99 section 6.7.4.(3). - This bug is known to occur on: +/* _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: function, pointer to function, function types. */ +#if _GL_HAS_ATTRIBUTE (alloc_size) +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args)) +#else +# define _GL_ATTRIBUTE_ALLOC_SIZE(args) +#endif - OS X 10.8 and earlier; see: - https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html +/* _GL_ATTRIBUTE_ALWAYS_INLINE tells that the compiler should always inline the + function and report an error if it cannot do so. */ +/* Applies to: function. */ +#if _GL_HAS_ATTRIBUTE (always_inline) +# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__)) +#else +# define _GL_ATTRIBUTE_ALWAYS_INLINE +#endif - DragonFly; see - http://muscles.dragonflybsd.org/bulk/bleeding-edge-potential/latest-per-pkg/ah-tty-0.3.12.log +/* _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: function. */ +#if _GL_HAS_ATTRIBUTE (artificial) +# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__)) +#else +# define _GL_ATTRIBUTE_ARTIFICIAL +#endif - FreeBSD; see: - https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html +/* _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__'. */ +#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 - OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and - for clang but remains for g++; see <https://trac.macports.org/ticket/41033>. - Assume DragonFly and FreeBSD will be similar. +/* _GL_ATTRIBUTE_CONST declares that it is OK for a compiler to omit duplicate + calls to the function with the same arguments. + This attribute is safe for a function that neither depends on nor affects + observable state, and always returns exactly once - e.g., does not loop + forever, and does not call longjmp. + (This attribute is stricter than _GL_ATTRIBUTE_PURE.) */ +/* Applies to: functions. */ +#if _GL_HAS_ATTRIBUTE (const) +# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) +#else +# define _GL_ATTRIBUTE_CONST +#endif - GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99 - inline semantics, unless -fgnu89-inline is used. It defines a macro - __GNUC_STDC_INLINE__ to indicate this situation or a macro - __GNUC_GNU_INLINE__ to indicate the opposite situation. - GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline - semantics but warns, unless -fgnu89-inline is used: - warning: C99 inline functions are not supported; using GNU89 - warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute - It defines a macro __GNUC_GNU_INLINE__ to indicate this situation. +/* _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. */ +#if _GL_GNUC_PREREQ (11, 0) +# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i))) +#else +# define _GL_ATTRIBUTE_DEALLOC(f, i) +#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 +# define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1) +#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. */ +#if _GL_HAS_C_ATTRIBUTE (deprecated) +# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]] +#elif _GL_HAS_ATTRIBUTE (deprecated) +# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__)) +#else +# define _GL_ATTRIBUTE_DEPRECATED +#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 _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 + +/* _GL_ATTRIBUTE_EXTERNALLY_VISIBLE declares that the entity should remain + visible to debuggers etc., even with '-fwhole-program'. */ +/* Applies to: functions, variables. */ +#if _GL_HAS_ATTRIBUTE (externally_visible) +# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible)) +#else +# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE +#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. */ +#if _GL_HAS_C_ATTRIBUTE (fallthrough) +# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]] +#elif _GL_HAS_ATTRIBUTE (fallthrough) +# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__)) +#else +# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0) +#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. */ +#if _GL_HAS_ATTRIBUTE (format) +# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) +#else +# define _GL_ATTRIBUTE_FORMAT(spec) +#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. */ +#if _GL_HAS_ATTRIBUTE (leaf) +# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__)) +#else +# define _GL_ATTRIBUTE_LEAF +#endif + +/* _GL_ATTRIBUTE_MALLOC declares that the function returns a pointer to freshly + allocated memory. */ +/* Applies to: functions. */ +#if _GL_HAS_ATTRIBUTE (malloc) +# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) +#else +# define _GL_ATTRIBUTE_MALLOC +#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. */ +#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C +# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__)) +#else +# define _GL_ATTRIBUTE_MAY_ALIAS +#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 C2x, this is spelled [[__maybe_unused__]]. + GCC's syntax is __attribute__ ((__unused__)). + clang supports both syntaxes. */ +#if _GL_HAS_C_ATTRIBUTE (maybe_unused) +# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] +#else +# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED +#endif +/* Alternative spelling of this macro, for convenience. */ +#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. */ +#if _GL_HAS_C_ATTRIBUTE (nodiscard) +# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] +#elif _GL_HAS_ATTRIBUTE (warn_unused_result) +# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__)) +#else +# define _GL_ATTRIBUTE_NODISCARD +#endif + +/* _GL_ATTRIBUTE_NOINLINE tells that the compiler should not inline the + function. */ +/* Applies to: functions. */ +#if _GL_HAS_ATTRIBUTE (noinline) +# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__)) +#else +# define _GL_ATTRIBUTE_NOINLINE +#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. */ +#if _GL_HAS_ATTRIBUTE (nonnull) +# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args)) +#else +# define _GL_ATTRIBUTE_NONNULL(args) +#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'. */ +#if _GL_HAS_ATTRIBUTE (nonstring) +# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__)) +#else +# define _GL_ATTRIBUTE_NONSTRING +#endif + +/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead. */ + +/* _GL_ATTRIBUTE_NOTHROW declares that the function does not throw exceptions. */ -#if (((defined __APPLE__ && defined __MACH__) \ - || defined __DragonFly__ || defined __FreeBSD__) \ - && (defined __header_inline \ - ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \ - && ! defined __clang__) \ - : ((! defined _DONT_USE_CTYPE_INLINE_ \ - && (defined __GNUC__ || defined __cplusplus)) \ - || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \ - && defined __GNUC__ && ! defined __cplusplus)))) -# define _GL_EXTERN_INLINE_STDHEADER_BUG +/* Applies to: functions. */ +#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus +# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__)) +#else +# define _GL_ATTRIBUTE_NOTHROW #endif -#if ((__GNUC__ \ - ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ - : (199901L <= __STDC_VERSION__ \ - && !defined __HP_cc \ - && !defined __PGI \ - && !(defined __SUNPRO_C && __STDC__))) \ - && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) -# define _GL_INLINE inline -# define _GL_EXTERN_INLINE extern inline -# define _GL_EXTERN_INLINE_IN_USE -#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \ - && !defined _GL_EXTERN_INLINE_STDHEADER_BUG) -# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__ - /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */ -# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__)) -# else -# define _GL_INLINE extern inline -# endif -# define _GL_EXTERN_INLINE extern -# define _GL_EXTERN_INLINE_IN_USE + +/* _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. */ +#if _GL_HAS_ATTRIBUTE (packed) +# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__)) #else -# define _GL_INLINE static _GL_UNUSED -# define _GL_EXTERN_INLINE static _GL_UNUSED +# define _GL_ATTRIBUTE_PACKED #endif -/* In GCC 4.6 (inclusive) to 5.1 (exclusive), - suppress bogus "no previous prototype for 'FOO'" - and "no previous declaration for 'FOO'" diagnostics, - when FOO is an inline function in the header; see - <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113> and - <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877>. */ -#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__ -# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ -# define _GL_INLINE_HEADER_CONST_PRAGMA -# else -# define _GL_INLINE_HEADER_CONST_PRAGMA \ - _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"") -# endif -# define _GL_INLINE_HEADER_BEGIN \ - _Pragma ("GCC diagnostic push") \ - _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \ - _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \ - _GL_INLINE_HEADER_CONST_PRAGMA -# define _GL_INLINE_HEADER_END \ - _Pragma ("GCC diagnostic pop") +/* _GL_ATTRIBUTE_PURE declares that It is OK for a compiler to omit duplicate + calls to the function with the same arguments if observable state is not + changed between calls. + 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.) */ +/* Applies to: functions. */ +#if _GL_HAS_ATTRIBUTE (pure) +# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) #else -# define _GL_INLINE_HEADER_BEGIN -# define _GL_INLINE_HEADER_END +# define _GL_ATTRIBUTE_PURE +#endif + +/* _GL_ATTRIBUTE_RETURNS_NONNULL declares that the function's return value is + a non-NULL pointer. */ +/* Applies to: functions. */ +#if _GL_HAS_ATTRIBUTE (returns_nonnull) +# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__)) +#else +# define _GL_ATTRIBUTE_RETURNS_NONNULL +#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. */ +#if _GL_HAS_ATTRIBUTE (sentinel) +# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos)) +#else +# define _GL_ATTRIBUTE_SENTINEL(pos) +#endif + +/* A helper macro. Don't use it directly. */ +#if _GL_HAS_ATTRIBUTE (unused) +# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +#else +# define _GL_ATTRIBUTE_UNUSED +#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. */ +#if !(defined __cplusplus && !_GL_GNUC_PREREQ (4, 5)) || defined __clang__ +# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED +#else +# define _GL_UNUSED_LABEL #endif + +/* A replacement for va_copy, if needed. */ +#define gl_va_copy(a,b) ((a) = (b)) + /* 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__. @@ -412,69 +1210,51 @@ # 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))) + + /* Define to `int' if <sys/types.h> does not define. */ #undef mode_t -/* Define to `int' if <sys/types.h> does not define. */ +/* Define to the type of st_nlink in struct stat, or a supertype. */ +#undef nlink_t + +/* Define as a signed integer type capable of holding a process identifier. */ #undef pid_t /* Define to the equivalent of the C99 'restrict' keyword, or to nothing if this is not supported. Do not define if restrict is - supported directly. */ + supported only directly. */ #undef restrict -/* Work around a bug in Sun C++: it does not support _Restrict or - __restrict__, even though the corresponding Sun C compiler ends up with - "#define restrict _Restrict" or "#define restrict __restrict__" in the - previous line. Perhaps some future version of Sun C++ will work with - restrict; if so, hopefully it defines __RESTRICT like Sun C does. */ -#if defined __SUNPRO_CC && !defined __RESTRICT +/* Work around a bug in older versions of Sun C++, which did not + #define __restrict__ or support _Restrict or __restrict__ + even though the corresponding Sun C compiler ended up with + "#define restrict _Restrict" or "#define restrict __restrict__" + in the previous line. This workaround can be removed once + we assume Oracle Developer Studio 12.5 (2016) or later. */ +#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__ # define _Restrict # define __restrict__ #endif +/* Define to `unsigned int' if <sys/types.h> does not define. */ +#undef size_t + /* Define as a signed type of the same size as size_t. */ #undef ssize_t -/* Define as a marker that can be attached to declarations that might not - be used. This helps to reduce warnings, such as from - GCC -Wunused-parameter. */ -#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) -# define _GL_UNUSED __attribute__ ((__unused__)) -#else -# define _GL_UNUSED -#endif -/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name - is a misnomer outside of parameter lists. */ -#define _UNUSED_PARAMETER_ _GL_UNUSED - -/* gcc supports the "unused" attribute on possibly unused labels, and - g++ has since version 4.5. Note to support C++ as well as C, - _GL_UNUSED_LABEL should be used with a trailing ; */ -#if !defined __cplusplus || __GNUC__ > 4 \ - || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) -# define _GL_UNUSED_LABEL _GL_UNUSED -#else -# define _GL_UNUSED_LABEL -#endif - -/* The __pure__ attribute was added in gcc 2.96. */ -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) -# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) -#else -# define _GL_ATTRIBUTE_PURE /* empty */ -#endif - -/* The __const__ attribute was added in gcc 2.95. */ -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) -# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) -#else -# define _GL_ATTRIBUTE_CONST /* empty */ -#endif - -/* The __malloc__ attribute was added in gcc 3. */ -#if 3 <= __GNUC__ -# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) -#else -# define _GL_ATTRIBUTE_MALLOC /* empty */ -#endif - +/* Define as a macro for copying va_list variables. */ +#undef va_copy |