HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| c4b681fd | 1 | # errno_h.m4 serial 6 |
| 61cd9dc9 | 2 | dnl Copyright (C) 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc. |
| c4b681fd LC |
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_DEFUN_ONCE([gl_HEADER_ERRNO_H], | |
| 8 | [ | |
| 9 | AC_REQUIRE([AC_PROG_CC]) | |
| 10 | AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [ | |
| 11 | AC_EGREP_CPP([booboo],[ | |
| 12 | #include <errno.h> | |
| 13 | #if !defined ENOMSG | |
| 14 | booboo | |
| 15 | #endif | |
| 16 | #if !defined EIDRM | |
| 17 | booboo | |
| 18 | #endif | |
| 19 | #if !defined ENOLINK | |
| 20 | booboo | |
| 21 | #endif | |
| 22 | #if !defined EPROTO | |
| 23 | booboo | |
| 24 | #endif | |
| 25 | #if !defined EMULTIHOP | |
| 26 | booboo | |
| 27 | #endif | |
| 28 | #if !defined EBADMSG | |
| 29 | booboo | |
| 30 | #endif | |
| 31 | #if !defined EOVERFLOW | |
| 32 | booboo | |
| 33 | #endif | |
| 34 | #if !defined ENOTSUP | |
| 35 | booboo | |
| 36 | #endif | |
| 37 | #if !defined ESTALE | |
| 38 | booboo | |
| 39 | #endif | |
| 40 | #if !defined ECANCELED | |
| 41 | booboo | |
| 42 | #endif | |
| 43 | ], | |
| 44 | [gl_cv_header_errno_h_complete=no], | |
| 45 | [gl_cv_header_errno_h_complete=yes]) | |
| 46 | ]) | |
| 47 | if test $gl_cv_header_errno_h_complete = yes; then | |
| 48 | ERRNO_H='' | |
| 49 | else | |
| 50 | gl_CHECK_NEXT_HEADERS([errno.h]) | |
| 51 | ERRNO_H='errno.h' | |
| 52 | fi | |
| 53 | AC_SUBST([ERRNO_H]) | |
| 54 | gl_REPLACE_ERRNO_VALUE([EMULTIHOP]) | |
| 55 | gl_REPLACE_ERRNO_VALUE([ENOLINK]) | |
| 56 | gl_REPLACE_ERRNO_VALUE([EOVERFLOW]) | |
| 57 | ]) | |
| 58 | ||
| 59 | # Assuming $1 = EOVERFLOW. | |
| 60 | # The EOVERFLOW errno value ought to be defined in <errno.h>, according to | |
| 61 | # POSIX. But some systems (like OpenBSD 4.0 or AIX 3) don't define it, and | |
| 62 | # some systems (like OSF/1) define it when _XOPEN_SOURCE_EXTENDED is defined. | |
| 63 | # Check for the value of EOVERFLOW. | |
| 64 | # Set the variables EOVERFLOW_HIDDEN and EOVERFLOW_VALUE. | |
| 65 | AC_DEFUN([gl_REPLACE_ERRNO_VALUE], | |
| 66 | [ | |
| 67 | if test -n "$ERRNO_H"; then | |
| 68 | AC_CACHE_CHECK([for ]$1[ value], [gl_cv_header_errno_h_]$1, [ | |
| 69 | AC_EGREP_CPP([yes],[ | |
| 70 | #include <errno.h> | |
| 71 | #ifdef ]$1[ | |
| 72 | yes | |
| 73 | #endif | |
| 74 | ], | |
| 75 | [gl_cv_header_errno_h_]$1[=yes], | |
| 76 | [gl_cv_header_errno_h_]$1[=no]) | |
| 77 | if test $gl_cv_header_errno_h_]$1[ = no; then | |
| 78 | AC_EGREP_CPP([yes],[ | |
| 79 | #define _XOPEN_SOURCE_EXTENDED 1 | |
| 80 | #include <errno.h> | |
| 81 | #ifdef ]$1[ | |
| 82 | yes | |
| 83 | #endif | |
| 84 | ], [gl_cv_header_errno_h_]$1[=hidden]) | |
| 85 | if test $gl_cv_header_errno_h_]$1[ = hidden; then | |
| 86 | dnl The macro exists but is hidden. | |
| 87 | dnl Define it to the same value. | |
| 88 | AC_COMPUTE_INT([gl_cv_header_errno_h_]$1, $1, [ | |
| 89 | #define _XOPEN_SOURCE_EXTENDED 1 | |
| 90 | #include <errno.h> | |
| 91 | /* The following two lines are a workaround against an autoconf-2.52 bug. */ | |
| 92 | #include <stdio.h> | |
| 93 | #include <stdlib.h> | |
| 94 | ]) | |
| 95 | fi | |
| 96 | fi | |
| 97 | ]) | |
| 98 | case $gl_cv_header_errno_h_]$1[ in | |
| 99 | yes | no) | |
| 100 | ]$1[_HIDDEN=0; ]$1[_VALUE= | |
| 101 | ;; | |
| 102 | *) | |
| 103 | ]$1[_HIDDEN=1; ]$1[_VALUE="$gl_cv_header_errno_h_]$1[" | |
| 104 | ;; | |
| 105 | esac | |
| 106 | AC_SUBST($1[_HIDDEN]) | |
| 107 | AC_SUBST($1[_VALUE]) | |
| 108 | fi | |
| 109 | ]) | |
| 110 | ||
| 111 | dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in. | |
| 112 | dnl Remove this when we can assume autoconf >= 2.61. | |
| 113 | m4_ifdef([AC_COMPUTE_INT], [], [ | |
| 114 | AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])]) | |
| 115 | ]) |