kc3-lang/gnulib/m4/strerror.m4

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  Commit

• Hash : a9b04535
  Author :
  Date : 2017-07-13T21:06:02
  

  Improve cross-compilation guesses for native Windows.
  
  * m4/btowc.m4 (gl_FUNC_BTOWC): Add cross-compilation guess for native
  Windows.
  * m4/c-stack.m4 (AC_SYS_XSI_STACK_OVERFLOW_HEURISTIC): Likewise.
  * m4/calloc.m4 (_AC_FUNC_CALLOC_IF): Likewise.
  * m4/canonicalize.m4 (gl_FUNC_REALPATH_WORKS): Likewise.
  * m4/cbrtf.m4 (gl_FUNC_CBRTF_WORKS): Likewise.
  * m4/cbrtl.m4 (gl_FUNC_CBRTL, gl_FUNC_CBRTL_WORKS): Likewise.
  * m4/ceil.m4 (gl_FUNC_CEIL): Likewise.
  * m4/ceilf.m4 (gl_FUNC_CEILF): Likewise.
  * m4/ceill.m4 (gl_FUNC_CEILL): Likewise.
  * m4/d-ino.m4 (gl_CHECK_TYPE_STRUCT_DIRENT_D_INO): Likewise.
  * m4/dup.m4 (gl_FUNC_DUP): Likewise.
  * m4/expl.m4 (gl_FUNC_EXPL): Likewise.
  * m4/exp2.m4 (gl_FUNC_EXP2_WORKS): Likewise.
  * m4/exp2l.m4 (gl_FUNC_EXP2L): Likewise.
  * m4/expm1.m4 (gl_FUNC_EXPM1): Likewise.
  * m4/expm1f.m4 (gl_FUNC_EXPM1F_WORKS): Likewise.
  * m4/exponentl.m4 (gl_LONG_DOUBLE_EXPONENT_LOCATION): Likewise.
  * m4/fabsl.m4 (gl_FUNC_FABSL_WORKS): Likewise.
  * m4/fchdir.m4 (gl_FUNC_FCHDIR): Likewise.
  * m4/fcntl-o.m4 (gl_FCNTL_O_FLAGS): Likewise.
  * m4/float_h.m4 (gl_FLOAT_H): Likewise.
  * m4/floor.m4 (gl_FUNC_FLOOR): Likewise.
  * m4/floorf.m4 (gl_FUNC_FLOORF): Likewise.
  * m4/fma.m4 (gl_FUNC_FMA_WORKS): Likewise.
  * m4/fmaf.m4 (gl_FUNC_FMAF_WORKS): Likewise.
  * m4/fmal.m4 (gl_FUNC_FMAL_WORKS): Likewise.
  * m4/fmod.m4 (gl_FUNC_FMOD): Likewise.
  * m4/fmodf.m4 (gl_FUNC_FMODF): Likewise.
  * m4/fmodl.m4 (gl_FUNC_FMODL): Likewise.
  * m4/frexp.m4 (gl_FUNC_FREXP_WORKS): Likewise.
  * m4/frexpf.m4 (gl_FUNC_FREXPF_WORKS): Likewise.
  * m4/ftello.m4 (gl_FUNC_FTELLO): Likewise.
  * m4/gettimeofday.m4 (gl_FUNC_GETTIMEOFDAY_CLOBBER): Likewise.
  * m4/hypot.m4 (gl_FUNC_HYPOT): Likewise.
  * m4/hypotf.m4 (gl_FUNC_HYPOTF, gl_FUNC_HYPOTF_WORKS): Likewise.
  * m4/hypotl.m4 (gl_FUNC_HYPOTL, gl_FUNC_HYPOTL_WORKS): Likewise.
  * m4/ilogb.m4 (gl_FUNC_ILOGB_WORKS): Likewise.
  * m4/ilogbf.m4 (gl_FUNC_ILOGBF_WORKS): Likewise.
  * m4/isfinite.m4 (gl_ISFINITEL_WORKS): Likewise.
  * m4/isinf.m4 (gl_ISINFL_WORKS): Likewise.
  * m4/isnanf.m4 (gl_ISNANF_WORKS): Likewise.
  * m4/isnanl.m4 (gl_FUNC_ISNANL_WORKS): Likewise.
  * m4/ldexpl.m4 (gl_FUNC_LDEXPL_WORKS): Likewise.
  * m4/log.m4 (gl_FUNC_LOG, gl_FUNC_LOG_WORKS): Likewise.
  * m4/logf.m4 (gl_FUNC_LOGF, gl_FUNC_LOGF_WORKS): Likewise.
  * m4/logl.m4 (gl_FUNC_LOGL_WORKS): Likewise.
  * m4/log10.m4 (gl_FUNC_LOG10, gl_FUNC_LOG10_WORKS): Likewise.
  * m4/log10f.m4 (gl_FUNC_LOG10F, gl_FUNC_LOG10F_WORKS): Likewise.
  * m4/log10l.m4 (gl_FUNC_LOG10L_WORKS): Likewise.
  * m4/log1p.m4 (gl_FUNC_LOG1P): Likewise.
  * m4/log1pf.m4 (gl_FUNC_LOG1PF, gl_FUNC_LOG1PF_WORKS): Likewise.
  * m4/log1pl.m4 (gl_FUNC_LOG1PL): Likewise.
  * m4/log2.m4 (gl_FUNC_LOG2, gl_FUNC_LOG2_WORKS): Likewise.
  * m4/log2f.m4 (gl_FUNC_LOG2F, gl_FUNC_LOG2F_WORKS): Likewise.
  * m4/log2l.m4 (gl_FUNC_LOG2L_WORKS): Likewise.
  * m4/logb.m4 (gl_FUNC_LOGB_WORKS): Likewise.
  * m4/logbf.m4 (gl_FUNC_LOGBF_WORKS): Likewise.
  * m4/logbl.m4 (gl_FUNC_LOGBL_WORKS): Likewise.
  * m4/lstat.m4 (gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK): Likewise.
  * m4/mbrtowc.m4 (gl_MBRTOWC_EMPTY_INPUT, gl_MBRTOWC_C_LOCALE): Likewise.
  * m4/mkdir.m4 (gl_FUNC_MKDIR): Likewise.
  * m4/mkstemp.m4 (gl_FUNC_MKSTEMP): Likewise.
  * m4/mktime.m4 (gl_FUNC_MKTIME_WORKS): Likewise.
  * m4/modf.m4 (gl_FUNC_MODF): Likewise.
  * m4/modff.m4 (gl_FUNC_MODFF): Likewise.
  * m4/modfl.m4 (gl_FUNC_MODFL): Likewise.
  * m4/nanosleep.m4 (gl_FUNC_NANOSLEEP): Likewise.
  * m4/perror.m4 (gl_FUNC_PERROR): Likewise.
  * m4/popen.m4 (gl_FUNC_POPEN): Likewise.
  * m4/posix_spawn.m4 (gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE,
  gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDDUP2,
  gl_FUNC_POSIX_SPAWN_FILE_ACTIONS_ADDOPEN): Likewise.
  * m4/ptsname_r.m4 (gl_PREREQ_PTSNAME_R): Likewise.
  * m4/putenv.m4 (gl_FUNC_PUTENV): Likewise.
  * m4/regex.m4 (gl_REGEX): Likewise.
  * m4/remainder.m4 (gl_FUNC_REMAINDER): Likewise.
  * m4/remainderf.m4 (gl_FUNC_REMAINDERF,
  gl_FUNC_REMAINDERF_WORKS): Likewise.
  * m4/remainderl.m4 (gl_FUNC_REMAINDERL,
  gl_FUNC_REMAINDERL_WORKS): Likewise.
  * m4/rename.m4 (gl_FUNC_RENAME): Likewise.
  * m4/rmdir-errno.m4 (gl_FUNC_RMDIR_NOTEMPTY): Likewise.
  * m4/rmdir.m4 (gl_FUNC_RMDIR): Likewise.
  * m4/round.m4 (gl_FUNC_ROUND): Likewise.
  * m4/roundf.m4 (gl_FUNC_ROUNDF): Likewise.
  * m4/roundl.m4 (gl_FUNC_ROUNDL): Likewise.
  * m4/signbit.m4 (gl_SIGNBIT): Likewise.
  * m4/sleep.m4 (gl_FUNC_SLEEP): Likewise.
  * m4/sqrtl.m4 (gl_FUNC_SQRTL_WORKS): Likewise.
  * m4/stdint.m4 (gl_STDINT_H): Likewise.
  * m4/strerror.m4 (gl_FUNC_STRERROR_0): Likewise.
  * m4/strncat.m4 (gl_FUNC_STRNCAT): Likewise.
  * m4/strtod.m4 (gl_FUNC_STRTOD): Likewise.
  * m4/strtoimax.m4 (gl_FUNC_STRTOIMAX): Likewise.
  * m4/strtok_r.m4 (gl_FUNC_STRTOK_R): Likewise.
  * m4/trunc.m4 (gl_FUNC_TRUNC): Likewise.
  * m4/truncf.m4 (gl_FUNC_TRUNCF): Likewise.
  * m4/truncl.m4 (gl_FUNC_TRUNCL): Likewise.
  * m4/tsearch.m4 (gl_FUNC_TSEARCH): Likewise.
  * m4/tzset.m4 (gl_FUNC_TZSET_CLOBBER): Likewise.
  * m4/ungetc.m4 (gl_FUNC_UNGETC_WORKS): Likewise.
  * m4/unlink-busy.m4 (gl_FUNC_UNLINK_BUSY_TEXT): Likewise.
  * m4/unlink.m4 (gl_FUNC_UNLINK): Likewise.
  * m4/usleep.m4 (gl_FUNC_USLEEP): Likewise.
  * m4/utimes.m4 (gl_FUNC_UTIMES): Likewise.
  * m4/wcrtomb.m4 (gl_FUNC_WCRTOMB): Likewise.
  * m4/wcsrtombs.m4 (gl_WCSRTOMBS_TERMINATION, gl_WCSRTOMBS_NULL):
  Likewise.
  * m4/wctob.m4 (gl_FUNC_WCTOB): Likewise.
  * m4/chown.m4 (AC_FUNC_CHOWN): Add cross-compilation guess for native
  Windows. Enable also on Autoconf 2.70.
  * m4/printf.m4 (gl_PRINTF_SIZES_C99, gl_PRINTF_LONG_DOUBLE,
  gl_PRINTF_INFINITE, gl_PRINTF_INFINITE_LONG_DOUBLE,
  gl_PRINTF_DIRECTIVE_A, gl_PRINTF_DIRECTIVE_F, gl_PRINTF_DIRECTIVE_N,
  gl_PRINTF_DIRECTIVE_LS, gl_PRINTF_FLAG_LEFTADJUST, gl_PRINTF_FLAG_ZERO,
  gl_SNPRINTF_TRUNCATION_C99, gl_SNPRINTF_RETVAL_C99,
  gl_SNPRINTF_DIRECTIVE_N, gl_SNPRINTF_SIZE1): Add cross-compilation guess
  for native Windows.
  (gl_PRINTF_POSITIONS, gl_PRINTF_FLAG_GROUPING,
  gl_VSNPRINTF_ZEROSIZE_C99): Add comment.
  

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• m4/strerror.m4

• # strerror.m4 serial 18
  dnl Copyright (C) 2002, 2007-2017 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  AC_DEFUN([gl_FUNC_STRERROR],
  [
    AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
    AC_REQUIRE([gl_HEADER_ERRNO_H])
    AC_REQUIRE([gl_FUNC_STRERROR_0])
    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
    m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [
      AC_REQUIRE([gl_FUNC_STRERROR_R_WORKS])
    ])
    if test "$ERRNO_H:$REPLACE_STRERROR_0" = :0; then
      AC_CACHE_CHECK([for working strerror function],
       [gl_cv_func_working_strerror],
       [AC_RUN_IFELSE(
          [AC_LANG_PROGRAM(
             [[#include <string.h>
             ]],
             [[if (!*strerror (-2)) return 1;]])],
          [gl_cv_func_working_strerror=yes],
          [gl_cv_func_working_strerror=no],
          [case "$host_os" in
                     # Guess yes on glibc systems.
             *-gnu*) gl_cv_func_working_strerror="guessing yes" ;;
                     # If we don't know, assume the worst.
             *)      gl_cv_func_working_strerror="guessing no" ;;
           esac
          ])
      ])
      case "$gl_cv_func_working_strerror" in
        *yes) ;;
        *)
          dnl The system's strerror() fails to return a string for out-of-range
          dnl integers. Replace it.
          REPLACE_STRERROR=1
          ;;
      esac
      m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [
        dnl If the system's strerror_r or __xpg_strerror_r clobbers strerror's
        dnl buffer, we must replace strerror.
        case "$gl_cv_func_strerror_r_works" in
          *no) REPLACE_STRERROR=1 ;;
        esac
      ])
    else
      dnl The system's strerror() cannot know about the new errno values we add
      dnl to <errno.h>, or any fix for strerror(0). Replace it.
      REPLACE_STRERROR=1
    fi
  ])
  
  dnl Detect if strerror(0) passes (that is, does not set errno, and does not
  dnl return a string that matches strerror(-1)).
  AC_DEFUN([gl_FUNC_STRERROR_0],
  [
    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
    REPLACE_STRERROR_0=0
    AC_CACHE_CHECK([whether strerror(0) succeeds],
     [gl_cv_func_strerror_0_works],
     [AC_RUN_IFELSE(
        [AC_LANG_PROGRAM(
           [[#include <string.h>
             #include <errno.h>
           ]],
           [[int result = 0;
             char *str;
             errno = 0;
             str = strerror (0);
             if (!*str) result |= 1;
             if (errno) result |= 2;
             if (strstr (str, "nknown") || strstr (str, "ndefined"))
               result |= 4;
             return result;]])],
        [gl_cv_func_strerror_0_works=yes],
        [gl_cv_func_strerror_0_works=no],
        [case "$host_os" in
                   # Guess yes on glibc systems.
           *-gnu*) gl_cv_func_strerror_0_works="guessing yes" ;;
                   # Guess yes on native Windows.
           mingw*) gl_cv_func_strerror_0_works="guessing yes" ;;
                   # If we don't know, assume the worst.
           *)      gl_cv_func_strerror_0_works="guessing no" ;;
         esac
        ])
    ])
    case "$gl_cv_func_strerror_0_works" in
      *yes) ;;
      *)
        REPLACE_STRERROR_0=1
        AC_DEFINE([REPLACE_STRERROR_0], [1], [Define to 1 if strerror(0)
          does not return a message implying success.])
        ;;
    esac
  ])
  

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