# 
# CheckPthreadFlag.cmake
# 
#   Copyright (c) 2010-2015  Takashi Kato <ktakashi@ymail.com>
# 
#   Redistribution and use in source and binary forms, with or without
#   modification, are permitted provided that the following conditions
#   are met:
# 
#   1. Redistributions of source code must retain the above copyright
#      notice, this list of conditions and the following disclaimer.
# 
#   2. Redistributions in binary form must reproduce the above copyright
#      notice, this list of conditions and the following disclaimer in the
#      documentation and/or other materials provided with the distribution.
# 
#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
#   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
#   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
#   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
#   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
#   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# 

INCLUDE(${CMAKE_ROOT}/Modules/CheckCSourceCompiles.cmake)

MACRO (CHECK_PTHREAD_VAR _FLAG _VAR)
  # _NP suffix problem
  CHECK_C_SOURCE_COMPILES(
"#include <pthread.h>
int main() { return ${_FLAG}; }
" ${_VAR})

ENDMACRO (CHECK_PTHREAD_VAR)

MACRO (CHECK_UNISTD_VAR _FLAG _VAR)
  # _NP suffix problem
  CHECK_C_SOURCE_COMPILES(
"#include <unistd.h>
int main() { return ${_FLAG}; }
" ${_VAR})

ENDMACRO (CHECK_UNISTD_VAR)