From f60d70259e48110fc3dba68fbbf07f6430c33346 Mon Sep 17 00:00:00 2001 From: berenger-bramas Date: Thu, 5 Jan 2012 10:42:52 +0000 Subject: [PATCH] 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 --- CMake/FindOpenMP.cmake | 159 +++++++++++++++++++++++++++++++++++++++++ CMakeLists.txt | 9 +++ 2 files changed, 168 insertions(+) create mode 100644 CMake/FindOpenMP.cmake diff --git a/CMake/FindOpenMP.cmake b/CMake/FindOpenMP.cmake new file mode 100644 index 00000000..4113bb42 --- /dev/null +++ b/CMake/FindOpenMP.cmake @@ -0,0 +1,159 @@ +# - 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 +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") diff --git a/CMakeLists.txt b/CMakeLists.txt index cf1e1754..a27c30aa 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -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 ) -- GitLab