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137 lines
3.2 KiB
137 lines
3.2 KiB
# errno_h.m4 serial 12 |
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dnl Copyright (C) 2004, 2006, 2008-2017 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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AC_DEFUN_ONCE([gl_HEADER_ERRNO_H], |
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[ |
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AC_REQUIRE([AC_PROG_CC]) |
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AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [ |
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AC_EGREP_CPP([booboo],[ |
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#include <errno.h> |
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#if !defined ETXTBSY |
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booboo |
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#endif |
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#if !defined ENOMSG |
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booboo |
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#endif |
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#if !defined EIDRM |
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booboo |
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#endif |
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#if !defined ENOLINK |
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booboo |
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#endif |
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#if !defined EPROTO |
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booboo |
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#endif |
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#if !defined EMULTIHOP |
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booboo |
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#endif |
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#if !defined EBADMSG |
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booboo |
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#endif |
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#if !defined EOVERFLOW |
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booboo |
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#endif |
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#if !defined ENOTSUP |
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booboo |
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#endif |
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#if !defined ENETRESET |
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booboo |
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#endif |
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#if !defined ECONNABORTED |
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booboo |
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#endif |
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#if !defined ESTALE |
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booboo |
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#endif |
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#if !defined EDQUOT |
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booboo |
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#endif |
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#if !defined ECANCELED |
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booboo |
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#endif |
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#if !defined EOWNERDEAD |
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booboo |
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#endif |
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#if !defined ENOTRECOVERABLE |
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booboo |
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#endif |
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#if !defined EILSEQ |
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booboo |
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#endif |
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], |
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[gl_cv_header_errno_h_complete=no], |
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[gl_cv_header_errno_h_complete=yes]) |
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]) |
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if test $gl_cv_header_errno_h_complete = yes; then |
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ERRNO_H='' |
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else |
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gl_NEXT_HEADERS([errno.h]) |
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ERRNO_H='errno.h' |
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fi |
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AC_SUBST([ERRNO_H]) |
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AM_CONDITIONAL([GL_GENERATE_ERRNO_H], [test -n "$ERRNO_H"]) |
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gl_REPLACE_ERRNO_VALUE([EMULTIHOP]) |
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gl_REPLACE_ERRNO_VALUE([ENOLINK]) |
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gl_REPLACE_ERRNO_VALUE([EOVERFLOW]) |
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]) |
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# Assuming $1 = EOVERFLOW. |
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# The EOVERFLOW errno value ought to be defined in <errno.h>, according to |
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# POSIX. But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and |
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# some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined. |
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# Check for the value of EOVERFLOW. |
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# Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE. |
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AC_DEFUN([gl_REPLACE_ERRNO_VALUE], |
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[ |
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if test -n "$ERRNO_H"; then |
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AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [ |
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AC_EGREP_CPP([yes],[ |
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#include <errno.h> |
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#ifdef ]$1[ |
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yes |
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#endif |
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], |
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[gl_cv_header_errno_h_]$1[=yes], |
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[gl_cv_header_errno_h_]$1[=no]) |
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if test $gl_cv_header_errno_h_]$1[ = no; then |
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AC_EGREP_CPP([yes],[ |
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#define _XOPEN_SOURCE_EXTENDED 1 |
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#include <errno.h> |
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#ifdef ]$1[ |
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yes |
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#endif |
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], [gl_cv_header_errno_h_]$1[=hidden]) |
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if test $gl_cv_header_errno_h_]$1[ = hidden; then |
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dnl The macro exists but is hidden. |
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dnl Define it to the same value. |
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AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [ |
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#define _XOPEN_SOURCE_EXTENDED 1 |
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#include <errno.h> |
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/* The following two lines are a workaround against an autoconf-2.52 bug. */ |
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#include <stdio.h> |
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#include <stdlib.h> |
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]) |
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fi |
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fi |
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]) |
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case $gl_cv_header_errno_h_]$1[ in |
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yes | no) |
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]$1[_HIDDEN=0; ]$1[_VALUE= |
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;; |
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*) |
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]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1[" |
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;; |
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esac |
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AC_SUBST($1[_HIDDEN]) |
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AC_SUBST($1[_VALUE]) |
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fi |
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]) |
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dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in. |
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dnl Remove this when we can assume autoconf >= 2.61. |
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m4_ifdef([AC_COMPUTE_INT], [], [ |
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AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])]) |
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])
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