Commit f60d7025 authored by berenger-bramas's avatar berenger-bramas

Use a find package for openmp (and not the package from cmake) to work with intel compiler.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/scalfmm/scalfmm/trunk@279 2616d619-271b-44dc-8df4-d4a8f33a7222
parent 61113a5f
# - 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/
#=============================================================================
# CMake - Cross Platform Makefile Generator
# Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * 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.
#
# * Neither the names of Kitware, Inc., the Insight Software Consortium,
# nor the names of their contributors may be used to endorse or promote
# products derived from this software without specific prior written
# permission.
#
# 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
# HOLDER 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.
#=============================================================================
# Modified in RSTM from original source to provide CXX-tm flags
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})
set(OpenMP_CXX-tm_FLAG_CANDIDATES ${OpenMP_CXX_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})
set(OpenMP_CXX-tm_TEST_SOURCE ${OpenMP_CXX_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 AND DEFINED OpenMP_CXX-tm_FLAGS)
set(OpenMP_C_FLAG_CANDIDATES)
set(OpenMP_CXX_FLAG_CANDIDATES)
set(OpenMP_CXX-tm_FLAG_CANDIDATES)
endif()
# check c compiler
IF (CMAKE_C_COMPILER)
include (CheckCSourceCompiles)
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("${OpenMP_C_TEST_SOURCE}" OpenMP_FLAG_DETECTED)
set(CMAKE_REQUIRED_FLAGS "${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})
ENDIF (CMAKE_C_COMPILER)
# check cxx compiler
IF (CMAKE_CXX_COMPILER)
include (CheckCXXSourceCompiles)
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("${OpenMP_CXX_TEST_SOURCE}" OpenMP_FLAG_DETECTED)
set(CMAKE_REQUIRED_FLAGS "${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})
ENDIF (CMAKE_CXX_COMPILER)
# check cxxtm compiler
IF (CMAKE_CXX-tm_COMPILER)
include (CheckCXX-tmSourceCompiles)
foreach(FLAG ${OpenMP_CXX-tm_FLAG_CANDIDATES})
set(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${FLAG}")
unset(OpenMP_FLAG_DETECTED CACHE)
message(STATUS "Try OpenMP CXX-tm flag = [${FLAG}]")
check_cxxtm_source_compiles("${OpenMP_CXX-tm_TEST_SOURCE}" OpenMP_FLAG_DETECTED)
set(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
if(OpenMP_FLAG_DETECTED)
set(OpenMP_CXX-tm_FLAGS_INTERNAL "${FLAG}")
break()
endif()
endforeach()
ENDIF ()
include(${CMAKE_ROOT}/Modules/FindPackageHandleStandardArgs.cmake)
macro (OpenMP_complete_lang_flags lang langstring)
IF (CMAKE_${lang}_COMPILER)
set(OpenMP_${lang}_FLAGS "${OpenMP_${lang}_FLAGS_INTERNAL}"
CACHE STRING "${langstring} compiler flags for OpenMP parallization")
find_package_handle_standard_args(OpenMP DEFAULT_MSG
OpenMP_${lang}_FLAGS )
mark_as_advanced(OpenMP_${lang}_FLAGS)
ENDIF ()
endmacro ()
OpenMP_complete_lang_flags (C "C")
OpenMP_complete_lang_flags (CXX "C++")
OpenMP_complete_lang_flags (CXX-tm "C++ TM")
......@@ -24,6 +24,15 @@ endif()
# Project Infos
project(scalfmm CXX)
# Test if openmp is here
set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/CMake)
find_package(OpenMP)
# include(FindOpenMP)
# if(OPENMP_FOUND)
# set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
# set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
# endif()
# Debug
MESSAGE( STATUS "SCALFMM_BUILD_DEBUG = ${SCALFMM_BUILD_DEBUG}" )
if( SCALFMM_BUILD_DEBUG )
......
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