qubes-installer-qubes-os/anaconda/m4/lock.m4
Marek Marczykowski-Górecki f73b3741f0 Update anaconda to 20.25.16
Apply result of "git diff anaconda-18.37.11-1..anaconda-20.25.16-1" and
resolve conflicts.
2014-04-08 05:50:31 +02:00

38 lines
1.2 KiB
Plaintext

# lock.m4 serial 10 (gettext-0.18)
dnl Copyright (C) 2005-2010 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_TRY_COMPILE([#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])
])