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Member "complexity-1.13/m4/errno_h.m4" (6 Jan 2020, 3038 Bytes) of package /linux/privat/complexity-1.13.tar.xz:


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    1 # errno_h.m4 serial 13
    2 dnl Copyright (C) 2004, 2006, 2008-2020 Free Software Foundation, Inc.
    3 dnl This file is free software; the Free Software Foundation
    4 dnl gives unlimited permission to copy and/or distribute it,
    5 dnl with or without modifications, as long as this notice is preserved.
    6 
    7 AC_PREREQ([2.61])
    8 
    9 AC_DEFUN_ONCE([gl_HEADER_ERRNO_H],
   10 [
   11   AC_REQUIRE([AC_PROG_CC])
   12   AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [
   13     AC_EGREP_CPP([booboo],[
   14 #include <errno.h>
   15 #if !defined ETXTBSY
   16 booboo
   17 #endif
   18 #if !defined ENOMSG
   19 booboo
   20 #endif
   21 #if !defined EIDRM
   22 booboo
   23 #endif
   24 #if !defined ENOLINK
   25 booboo
   26 #endif
   27 #if !defined EPROTO
   28 booboo
   29 #endif
   30 #if !defined EMULTIHOP
   31 booboo
   32 #endif
   33 #if !defined EBADMSG
   34 booboo
   35 #endif
   36 #if !defined EOVERFLOW
   37 booboo
   38 #endif
   39 #if !defined ENOTSUP
   40 booboo
   41 #endif
   42 #if !defined ENETRESET
   43 booboo
   44 #endif
   45 #if !defined ECONNABORTED
   46 booboo
   47 #endif
   48 #if !defined ESTALE
   49 booboo
   50 #endif
   51 #if !defined EDQUOT
   52 booboo
   53 #endif
   54 #if !defined ECANCELED
   55 booboo
   56 #endif
   57 #if !defined EOWNERDEAD
   58 booboo
   59 #endif
   60 #if !defined ENOTRECOVERABLE
   61 booboo
   62 #endif
   63 #if !defined EILSEQ
   64 booboo
   65 #endif
   66       ],
   67       [gl_cv_header_errno_h_complete=no],
   68       [gl_cv_header_errno_h_complete=yes])
   69   ])
   70   if test $gl_cv_header_errno_h_complete = yes; then
   71     ERRNO_H=''
   72   else
   73     gl_NEXT_HEADERS([errno.h])
   74     ERRNO_H='errno.h'
   75   fi
   76   AC_SUBST([ERRNO_H])
   77   AM_CONDITIONAL([GL_GENERATE_ERRNO_H], [test -n "$ERRNO_H"])
   78   gl_REPLACE_ERRNO_VALUE([EMULTIHOP])
   79   gl_REPLACE_ERRNO_VALUE([ENOLINK])
   80   gl_REPLACE_ERRNO_VALUE([EOVERFLOW])
   81 ])
   82 
   83 # Assuming $1 = EOVERFLOW.
   84 # The EOVERFLOW errno value ought to be defined in <errno.h>, according to
   85 # POSIX.  But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and
   86 # some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined.
   87 # Check for the value of EOVERFLOW.
   88 # Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE.
   89 AC_DEFUN([gl_REPLACE_ERRNO_VALUE],
   90 [
   91   if test -n "$ERRNO_H"; then
   92     AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [
   93       AC_EGREP_CPP([yes],[
   94 #include <errno.h>
   95 #ifdef ]$1[
   96 yes
   97 #endif
   98       ],
   99       [gl_cv_header_errno_h_]$1[=yes],
  100       [gl_cv_header_errno_h_]$1[=no])
  101       if test $gl_cv_header_errno_h_]$1[ = no; then
  102         AC_EGREP_CPP([yes],[
  103 #define _XOPEN_SOURCE_EXTENDED 1
  104 #include <errno.h>
  105 #ifdef ]$1[
  106 yes
  107 #endif
  108           ], [gl_cv_header_errno_h_]$1[=hidden])
  109         if test $gl_cv_header_errno_h_]$1[ = hidden; then
  110           dnl The macro exists but is hidden.
  111           dnl Define it to the same value.
  112           AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [
  113 #define _XOPEN_SOURCE_EXTENDED 1
  114 #include <errno.h>
  115 /* The following two lines are a workaround against an autoconf-2.52 bug.  */
  116 #include <stdio.h>
  117 #include <stdlib.h>
  118 ])
  119         fi
  120       fi
  121     ])
  122     case $gl_cv_header_errno_h_]$1[ in
  123       yes | no)
  124         ]$1[_HIDDEN=0; ]$1[_VALUE=
  125         ;;
  126       *)
  127         ]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1["
  128         ;;
  129     esac
  130     AC_SUBST($1[_HIDDEN])
  131     AC_SUBST($1[_VALUE])
  132   fi
  133 ])