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annotate m4/signalblocking.m4 @ 6479:913b40e88d1a
Update
| author | Sergey Poznyakoff <gray@gnu.org.ua> |
|---|---|
| date | Fri, 09 Dec 2005 12:34:04 +0000 |
| parents | adff74659d81 |
| children | a55a9e67f244 |
| rev | line source |
|---|---|
| 4770 | 1 # signalblocking.m4 serial 1 (gettext-0.11) |
| 2 dnl Copyright (C) 2001-2002 Free Software Foundation, Inc. | |
|
5585
adff74659d81
Use an all-permissive copyright notice, recommended by RMS.
Bruno Haible <bruno@clisp.org>
parents:
4770
diff
changeset
|
3 dnl This file is free software; the Free Software Foundation |
|
adff74659d81
Use an all-permissive copyright notice, recommended by RMS.
Bruno Haible <bruno@clisp.org>
parents:
4770
diff
changeset
|
4 dnl gives unlimited permission to copy and/or distribute it, |
|
adff74659d81
Use an all-permissive copyright notice, recommended by RMS.
Bruno Haible <bruno@clisp.org>
parents:
4770
diff
changeset
|
5 dnl with or without modifications, as long as this notice is preserved. |
| 4770 | 6 |
| 7 # Determine available signal blocking primitives. Three different APIs exist: | |
| 8 # 1) POSIX: sigemptyset, sigaddset, sigprocmask | |
| 9 # 2) SYSV: sighold, sigrelse | |
| 10 # 3) BSD: sigblock, sigsetmask | |
| 11 # For simplicity, here we check only for the POSIX signal blocking. | |
| 12 AC_DEFUN([gt_SIGNALBLOCKING], | |
| 13 [ | |
| 14 signals_not_posix= | |
| 15 AC_EGREP_HEADER(sigset_t, signal.h, , signals_not_posix=1) | |
| 16 if test -z "$signals_not_posix"; then | |
| 17 AC_CHECK_FUNC(sigprocmask, | |
| 18 AC_DEFINE(HAVE_POSIX_SIGNALBLOCKING, 1, | |
| 19 [Define to 1 if you have the sigset_t type and the sigprocmask function.])) | |
| 20 fi | |
| 21 ]) |