mirror of
https://github.com/reactos/CMake.git
synced 2024-12-01 15:30:40 +00:00
b01184022b
This is to avoid getting an (older) copy of FPHSA.cmake which is e.g. installed with KDE 4.5.0 and 4.5.1. Alex
115 lines
3.6 KiB
CMake
115 lines
3.6 KiB
CMake
# - Finds OpenMP support
|
|
# This module can be used to detect OpenMP support in a compiler.
|
|
# If the compiler supports OpenMP, the flags required to compile with
|
|
# openmp support are set.
|
|
#
|
|
# The following variables are set:
|
|
# OpenMP_C_FLAGS - flags to add to the C compiler for OpenMP support
|
|
# OpenMP_CXX_FLAGS - flags to add to the CXX compiler for OpenMP support
|
|
# OPENMP_FOUND - true if openmp is detected
|
|
#
|
|
# Supported compilers can be found at http://openmp.org/wp/openmp-compilers/
|
|
|
|
#=============================================================================
|
|
# Copyright 2009 Kitware, Inc.
|
|
# Copyright 2008-2009 André Rigland Brodtkorb <Andre.Brodtkorb@ifi.uio.no>
|
|
#
|
|
# Distributed under the OSI-approved BSD License (the "License");
|
|
# see accompanying file Copyright.txt for details.
|
|
#
|
|
# This software is distributed WITHOUT ANY WARRANTY; without even the
|
|
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
# See the License for more information.
|
|
#=============================================================================
|
|
# (To distribute this file outside of CMake, substitute the full
|
|
# License text for the above reference.)
|
|
|
|
include(CheckCSourceCompiles)
|
|
include(CheckCXXSourceCompiles)
|
|
include("${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake")
|
|
|
|
set(OpenMP_C_FLAG_CANDIDATES
|
|
#Gnu
|
|
"-fopenmp"
|
|
#Microsoft Visual Studio
|
|
"/openmp"
|
|
#Intel windows
|
|
"-Qopenmp"
|
|
#Intel
|
|
"-openmp"
|
|
#Empty, if compiler automatically accepts openmp
|
|
" "
|
|
#Sun
|
|
"-xopenmp"
|
|
#HP
|
|
"+Oopenmp"
|
|
#IBM XL C/c++
|
|
"-qsmp"
|
|
#Portland Group
|
|
"-mp"
|
|
)
|
|
set(OpenMP_CXX_FLAG_CANDIDATES ${OpenMP_C_FLAG_CANDIDATES})
|
|
|
|
# sample openmp source code to test
|
|
set(OpenMP_C_TEST_SOURCE
|
|
"
|
|
#include <omp.h>
|
|
int main() {
|
|
#ifdef _OPENMP
|
|
return 0;
|
|
#else
|
|
breaks_on_purpose
|
|
#endif
|
|
}
|
|
")
|
|
# use the same source for CXX as C for now
|
|
set(OpenMP_CXX_TEST_SOURCE ${OpenMP_C_TEST_SOURCE})
|
|
# if these are set then do not try to find them again,
|
|
# by avoiding any try_compiles for the flags
|
|
if(DEFINED OpenMP_C_FLAGS AND DEFINED OpenMP_CXX_FLAGS)
|
|
set(OpenMP_C_FLAG_CANDIDATES)
|
|
set(OpenMP_CXX_FLAG_CANDIDATES)
|
|
endif(DEFINED OpenMP_C_FLAGS AND DEFINED OpenMP_CXX_FLAGS)
|
|
|
|
# check c compiler
|
|
foreach(FLAG ${OpenMP_C_FLAG_CANDIDATES})
|
|
set(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
|
|
set(CMAKE_REQUIRED_FLAGS "${FLAG}")
|
|
unset(OpenMP_FLAG_DETECTED CACHE)
|
|
message(STATUS "Try OpenMP C flag = [${FLAG}]")
|
|
check_c_source_compiles("${OpenMP_CXX_TEST_SOURCE}" OpenMP_FLAG_DETECTED)
|
|
set(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
|
|
if(OpenMP_FLAG_DETECTED)
|
|
set(OpenMP_C_FLAGS_INTERNAL "${FLAG}")
|
|
break()
|
|
endif(OpenMP_FLAG_DETECTED)
|
|
endforeach(FLAG ${OpenMP_C_FLAG_CANDIDATES})
|
|
|
|
# check cxx compiler
|
|
foreach(FLAG ${OpenMP_CXX_FLAG_CANDIDATES})
|
|
set(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
|
|
set(CMAKE_REQUIRED_FLAGS "${FLAG}")
|
|
unset(OpenMP_FLAG_DETECTED CACHE)
|
|
message(STATUS "Try OpenMP CXX flag = [${FLAG}]")
|
|
check_cxx_source_compiles("${OpenMP_C_TEST_SOURCE}" OpenMP_FLAG_DETECTED)
|
|
set(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
|
|
if(OpenMP_FLAG_DETECTED)
|
|
set(OpenMP_CXX_FLAGS_INTERNAL "${FLAG}")
|
|
break()
|
|
endif(OpenMP_FLAG_DETECTED)
|
|
endforeach(FLAG ${OpenMP_CXX_FLAG_CANDIDATES})
|
|
|
|
set(OpenMP_C_FLAGS "${OpenMP_C_FLAGS_INTERNAL}"
|
|
CACHE STRING "C compiler flags for OpenMP parallization")
|
|
|
|
set(OpenMP_CXX_FLAGS "${OpenMP_CXX_FLAGS_INTERNAL}"
|
|
CACHE STRING "C++ compiler flags for OpenMP parallization")
|
|
# handle the standard arguments for find_package
|
|
find_package_handle_standard_args(OpenMP DEFAULT_MSG
|
|
OpenMP_C_FLAGS OpenMP_CXX_FLAGS )
|
|
|
|
mark_as_advanced(
|
|
OpenMP_C_FLAGS
|
|
OpenMP_CXX_FLAGS
|
|
)
|