| dnl |
| dnl Threading stuff for CUPS. |
| dnl |
| dnl Copyright 2007-2017 by Apple Inc. |
| dnl Copyright 1997-2005 by Easy Software Products, all rights reserved. |
| dnl |
| dnl Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
| dnl |
| |
| AC_ARG_ENABLE(threads, [ --disable-threads disable multi-threading support]) |
| |
| have_pthread=no |
| PTHREAD_FLAGS="" |
| |
| if test "x$enable_threads" != xno; then |
| AC_CHECK_HEADER(pthread.h, AC_DEFINE(HAVE_PTHREAD_H)) |
| |
| if test x$ac_cv_header_pthread_h = xyes; then |
| dnl Check various threading options for the platforms we support |
| for flag in -lpthreads -lpthread -pthread; do |
| AC_MSG_CHECKING([for pthread_create using $flag]) |
| SAVELIBS="$LIBS" |
| LIBS="$flag $LIBS" |
| AC_TRY_LINK([#include <pthread.h>], |
| [pthread_create(0, 0, 0, 0);], |
| have_pthread=yes, |
| LIBS="$SAVELIBS") |
| AC_MSG_RESULT([$have_pthread]) |
| |
| if test $have_pthread = yes; then |
| PTHREAD_FLAGS="-D_THREAD_SAFE -D_REENTRANT" |
| |
| # Solaris requires -D_POSIX_PTHREAD_SEMANTICS to |
| # be POSIX-compliant... :( |
| if test $host_os_name = sunos; then |
| PTHREAD_FLAGS="$PTHREAD_FLAGS -D_POSIX_PTHREAD_SEMANTICS" |
| fi |
| break |
| fi |
| done |
| fi |
| fi |
| |
| AC_SUBST(PTHREAD_FLAGS) |
