| 1 | # lock.m4 serial 11 (gettext-0.18.2)
|
|---|
| 2 | dnl Copyright (C) 2005-2012 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 | dnl From Bruno Haible.
|
|---|
| 8 |
|
|---|
| 9 | AC_DEFUN([gl_LOCK],
|
|---|
| 10 | [
|
|---|
| 11 | AC_REQUIRE([gl_THREADLIB])
|
|---|
| 12 | if test "$gl_threads_api" = posix; then
|
|---|
| 13 | # OSF/1 4.0 and MacOS X 10.1 lack the pthread_rwlock_t type and the
|
|---|
| 14 | # pthread_rwlock_* functions.
|
|---|
| 15 | AC_CHECK_TYPE([pthread_rwlock_t],
|
|---|
| 16 | [AC_DEFINE([HAVE_PTHREAD_RWLOCK], [1],
|
|---|
| 17 | [Define if the POSIX multithreading library has read/write locks.])],
|
|---|
| 18 | [],
|
|---|
| 19 | [#include <pthread.h>])
|
|---|
| 20 | # glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro.
|
|---|
| 21 | AC_COMPILE_IFELSE([
|
|---|
| 22 | AC_LANG_PROGRAM(
|
|---|
| 23 | [[#include <pthread.h>]],
|
|---|
| 24 | [[
|
|---|
| 25 | #if __FreeBSD__ == 4
|
|---|
| 26 | error "No, in FreeBSD 4.0 recursive mutexes actually don't work."
|
|---|
| 27 | #else
|
|---|
| 28 | int x = (int)PTHREAD_MUTEX_RECURSIVE;
|
|---|
| 29 | return !x;
|
|---|
| 30 | #endif
|
|---|
| 31 | ]])],
|
|---|
| 32 | [AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], [1],
|
|---|
| 33 | [Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE.])])
|
|---|
| 34 | fi
|
|---|
| 35 | gl_PREREQ_LOCK
|
|---|
| 36 | ])
|
|---|
| 37 |
|
|---|
| 38 | # Prerequisites of lib/lock.c.
|
|---|
| 39 | AC_DEFUN([gl_PREREQ_LOCK], [
|
|---|
| 40 | AC_REQUIRE([AC_C_INLINE])
|
|---|
| 41 | ])
|
|---|