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trader/m4/lock.m4
John Zaitseff f265336d3b Add all auto-generated files
All auto-generated files are created by running ./build-aux/bootstrap
with Gnulib as at commit a7967a2cf0998b6c157c7cf8e1d8d9d11dab30b0 (with a
date stamp of Thu Mar 15 08:46:29 2012 -0700), Autoconf 2.68, Automake
1.11.3 and Gettext 0.18.1.1.
2012-03-16 11:30:07 +11:00

42 lines
1.3 KiB
Plaintext

# lock.m4 serial 11 (gettext-0.18.2)
dnl Copyright (C) 2005-2012 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
AC_DEFUN([gl_LOCK],
[
AC_REQUIRE([gl_THREADLIB])
if test "$gl_threads_api" = posix; then
# OSF/1 4.0 and MacOS X 10.1 lack the pthread_rwlock_t type and the
# pthread_rwlock_* functions.
AC_CHECK_TYPE([pthread_rwlock_t],
[AC_DEFINE([HAVE_PTHREAD_RWLOCK], [1],
[Define if the POSIX multithreading library has read/write locks.])],
[],
[#include <pthread.h>])
# glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro.
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM(
[[#include <pthread.h>]],
[[
#if __FreeBSD__ == 4
error "No, in FreeBSD 4.0 recursive mutexes actually don't work."
#else
int x = (int)PTHREAD_MUTEX_RECURSIVE;
return !x;
#endif
]])],
[AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], [1],
[Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE.])])
fi
gl_PREREQ_LOCK
])
# Prerequisites of lib/lock.c.
AC_DEFUN([gl_PREREQ_LOCK], [
AC_REQUIRE([AC_C_INLINE])
])