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Member "libextractor-1.11/m4/lock.m4" (2 Dec 2018, 1463 Bytes) of package /linux/privat/libextractor-1.11.tar.gz:


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    1 # lock.m4 serial 13 (gettext-0.18.2)
    2 dnl Copyright (C) 2005-2016 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 Mac OS 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 #elif (defined __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ \
   28        && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 1070)
   29 error "No, in Mac OS X < 10.7 recursive mutexes actually don't work."
   30 #else
   31 int x = (int)PTHREAD_MUTEX_RECURSIVE;
   32 return !x;
   33 #endif
   34         ]])],
   35       [AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], [1],
   36          [Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE.])])
   37   fi
   38   gl_PREREQ_LOCK
   39 ])
   40 
   41 # Prerequisites of lib/glthread/lock.c.
   42 AC_DEFUN([gl_PREREQ_LOCK], [:])