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# -*- mode: cmake -*-
include(CMakePushCheckState)
# Check for Eigen
find_package(Eigen3 3.0)
if (EIGEN3_FOUND)
# Perform a compile check with Eigen
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_INCLUDES ${EIGEN3_INCLUDE_DIR})
CHECK_CXX_SOURCE_COMPILES("
#include <Eigen/Core>
#include <Eigen/Dense>
#include <iostream>
int main(int argc, char* argv[]){
Eigen::MatrixXd m = Eigen::MatrixXd::Random(5, 5);
m = m.transpose() + m;
Eigen::SelfAdjointEigenSolver<Eigen::MatrixXd> eig(m);
Eigen::MatrixXd m_invsqrt = eig.operatorInverseSqrt();
std::cout << m_invsqrt << std::endl;
}"
EIGEN3_COMPILES)
cmake_pop_check_state()
if (NOT EIGEN3_COMPILES)
message(FATAL_ERROR "Eigen3 found at ${EIGEN3_INCLUDE_DIR}, but failed to compile test program")
endif()
list(APPEND TiledArray_CONFIG_INCLUDE_DIRS ${EIGEN3_INCLUDE_DIR})
elseif(TA_EXPERT)
message("** Eigen3 was not found")
message(FATAL_ERROR "** Downloading and building Eigen3 is explicitly disabled in EXPERT mode")
else()
include(ExternalProject)
# Set source and build path for Eigen3 in the TiledArray Project
set(EXTERNAL_SOURCE_DIR ${PROJECT_BINARY_DIR}/external/source/eigen)
set(EXTERNAL_BUILD_DIR ${PROJECT_BINARY_DIR}/external/build/eigen)
set(EIGEN3_URL https://bitbucket.org/eigen/eigen)
set(EIGEN3_TAG 3.2.4)
message("** Will build Eigen from ${EIGEN3_URL}")
ExternalProject_Add(eigen3
PREFIX ${CMAKE_INSTALL_PREFIX}
STAMP_DIR ${EXTERNAL_BUILD_DIR}/stamp
#--Download step--------------
HG_REPOSITORY ${EIGEN3_URL}
HG_TAG ${EIGEN3_TAG}
#--Configure step-------------
SOURCE_DIR ${EXTERNAL_SOURCE_DIR}
CONFIGURE_COMMAND ""
#--Build step-----------------
BINARY_DIR ${EXTERNAL_BUILD_DIR}
BUILD_COMMAND ""
#--Install step---------------
INSTALL_COMMAND ""
#--Custom targets-------------
STEP_TARGETS download
)
# Add eigen3 dependency
add_dependencies(External eigen3)
# Set the Eigen 3 included directory
set(EIGEN3_INCLUDE_DIR ${EXTERNAL_SOURCE_DIR})
# Install Eigen 3
install(
DIRECTORY
${EXTERNAL_SOURCE_DIR}/Eigen
${EXTERNAL_SOURCE_DIR}/unsupported
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/eigen3
COMPONENT eigen3
)
install(
FILES ${EXTERNAL_SOURCE_DIR}/signature_of_eigen3_matrix_library
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/eigen3
COMPONENT eigen3
)
endif()
# Set the build variables
include_directories(${EIGEN3_INCLUDE_DIR})
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