From f60d70259e48110fc3dba68fbbf07f6430c33346 Mon Sep 17 00:00:00 2001
From: berenger-bramas <berenger-bramas@2616d619-271b-44dc-8df4-d4a8f33a7222>
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 000000000..4113bb42f
--- /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 <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")
diff --git a/CMakeLists.txt b/CMakeLists.txt
index cf1e1754f..a27c30aad 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 )
--
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