| 
version 1.1.1.2, 2012/05/29 09:29:44
 | 
version 1.1.1.3, 2021/03/17 13:38:46
 | 
| 
 Line 1
 | 
 Line 1
 | 
| # strerror.m4 serial 16 | # strerror.m4 serial 20 | 
| dnl Copyright (C) 2002, 2007-2011 Free Software Foundation, Inc. | dnl Copyright (C) 2002, 2007-2019 Free Software Foundation, Inc. | 
 |  dnl This file is free software; the Free Software Foundation | 
  dnl This file is free software; the Free Software Foundation | 
 |  dnl gives unlimited permission to copy and/or distribute it, | 
  dnl gives unlimited permission to copy and/or distribute it, | 
 |  dnl with or without modifications, as long as this notice is preserved. | 
  dnl with or without modifications, as long as this notice is preserved. | 
| 
 Line 9  AC_DEFUN([gl_FUNC_STRERROR],
 | 
 Line 9  AC_DEFUN([gl_FUNC_STRERROR],
 | 
 |    AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) | 
    AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) | 
 |    AC_REQUIRE([gl_HEADER_ERRNO_H]) | 
    AC_REQUIRE([gl_HEADER_ERRNO_H]) | 
 |    AC_REQUIRE([gl_FUNC_STRERROR_0]) | 
    AC_REQUIRE([gl_FUNC_STRERROR_0]) | 
 |   | 
    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | 
 |    m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [ | 
    m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [ | 
 |      AC_REQUIRE([gl_FUNC_STRERROR_R_WORKS]) | 
      AC_REQUIRE([gl_FUNC_STRERROR_R_WORKS]) | 
 |    ]) | 
    ]) | 
| 
 Line 22  AC_DEFUN([gl_FUNC_STRERROR],
 | 
 Line 23  AC_DEFUN([gl_FUNC_STRERROR],
 | 
 |             [[if (!*strerror (-2)) return 1;]])], | 
             [[if (!*strerror (-2)) return 1;]])], | 
 |          [gl_cv_func_working_strerror=yes], | 
          [gl_cv_func_working_strerror=yes], | 
 |          [gl_cv_func_working_strerror=no], | 
          [gl_cv_func_working_strerror=no], | 
|         [dnl Be pessimistic on cross-compiles for now. |         [case "$host_os" in | 
|          gl_cv_func_working_strerror="guessing no"]) |                           # Guess yes on glibc systems. | 
|   |            *-gnu* | gnu*) gl_cv_func_working_strerror="guessing yes" ;; | 
|   |                           # Guess yes on musl systems. | 
|   |            *-musl*)       gl_cv_func_working_strerror="guessing yes" ;; | 
|   |                           # If we don't know, assume the worst. | 
|   |            *)             gl_cv_func_working_strerror="guessing no" ;; | 
|   |          esac | 
|   |         ]) | 
 |      ]) | 
      ]) | 
|     if test "$gl_cv_func_working_strerror" != yes; then |     case "$gl_cv_func_working_strerror" in | 
|       dnl The system's strerror() fails to return a string for out-of-range |       *yes) ;; | 
|       dnl integers. Replace it. |       *) | 
|       REPLACE_STRERROR=1 |         dnl The system's strerror() fails to return a string for out-of-range | 
|     fi |         dnl integers. Replace it. | 
|   |         REPLACE_STRERROR=1 | 
|   |         ;; | 
|   |     esac | 
 |      m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [ | 
      m4_ifdef([gl_FUNC_STRERROR_R_WORKS], [ | 
 |        dnl If the system's strerror_r or __xpg_strerror_r clobbers strerror's | 
        dnl If the system's strerror_r or __xpg_strerror_r clobbers strerror's | 
 |        dnl buffer, we must replace strerror. | 
        dnl buffer, we must replace strerror. | 
| 
 Line 48  dnl Detect if strerror(0) passes (that is, does not se
 | 
 Line 59  dnl Detect if strerror(0) passes (that is, does not se
 | 
 |  dnl return a string that matches strerror(-1)). | 
  dnl return a string that matches strerror(-1)). | 
 |  AC_DEFUN([gl_FUNC_STRERROR_0], | 
  AC_DEFUN([gl_FUNC_STRERROR_0], | 
 |  [ | 
  [ | 
 |   | 
    AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | 
 |    REPLACE_STRERROR_0=0 | 
    REPLACE_STRERROR_0=0 | 
 |    AC_CACHE_CHECK([whether strerror(0) succeeds], | 
    AC_CACHE_CHECK([whether strerror(0) succeeds], | 
 |     [gl_cv_func_strerror_0_works], | 
     [gl_cv_func_strerror_0_works], | 
| 
 Line 67  AC_DEFUN([gl_FUNC_STRERROR_0],
 | 
 Line 79  AC_DEFUN([gl_FUNC_STRERROR_0],
 | 
 |             return result;]])], | 
             return result;]])], | 
 |        [gl_cv_func_strerror_0_works=yes], | 
        [gl_cv_func_strerror_0_works=yes], | 
 |        [gl_cv_func_strerror_0_works=no], | 
        [gl_cv_func_strerror_0_works=no], | 
|       [dnl Be pessimistic on cross-compiles for now. |       [case "$host_os" in | 
|        gl_cv_func_strerror_0_works="guessing no"]) |                         # Guess yes on glibc systems. | 
|   |          *-gnu* | gnu*) gl_cv_func_strerror_0_works="guessing yes" ;; | 
|   |                         # Guess yes on musl systems. | 
|   |          *-musl*)       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 | 
|   |       ]) | 
 |    ]) | 
    ]) | 
|   if test "$gl_cv_func_strerror_0_works" != yes; then |   case "$gl_cv_func_strerror_0_works" in | 
|     REPLACE_STRERROR_0=1 |     *yes) ;; | 
|     AC_DEFINE([REPLACE_STRERROR_0], [1], [Define to 1 if strerror(0) |     *) | 
|       does not return a message implying success.]) |       REPLACE_STRERROR_0=1 | 
|   fi |       AC_DEFINE([REPLACE_STRERROR_0], [1], [Define to 1 if strerror(0) | 
|   |         does not return a message implying success.]) | 
|   |       ;; | 
|   |   esac | 
 |  ]) | 
  ]) |