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CMakeLists.txt
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CMakeLists.txt
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# CMake project file for HelFEM
cmake_minimum_required (VERSION 3.5)
project (helfem CXX Fortran)
set(CMAKE_CXX_STANDARD 11)
# Ensure we are building out-of-source so that the tests work (issue 120)
get_filename_component(srcdir "${CMAKE_SOURCE_DIR}" REALPATH)
get_filename_component(bindir "${CMAKE_BINARY_DIR}" REALPATH)
if("${srcdir}" STREQUAL "${bindir}")
message(FATAL_ERROR "HelFEM should not be configured & built in the source directory.
Please create a separate build directory and rerun cmake from the build directory.
For example: mkdir objdir; cd build; cmake ..")
endif()
# Following options can be used to configure the HelFEM CMake build. They can be set by
# passing the corresponding -D flags to CMake, e.g.:
#
# cmake -DHELFEM_FIND_DEPS=ON -DHELFEM_BINARIES=OFF ..
#
# - USE_OPENMP: if set to OFF, force-disables OpenMP. Note that if it is on, OpenMP may
# still get disabled if CMake is not able to find OpenMP libraries.
#
# - HELFEM_FIND_DEPS: if set to ON, CMake will try to find all dependencies automatically
# with find_package calls. If successful, no user configuration should be necessary to
# compile HelFEM.
#
# In case some libraries are installed in non-standard locations, the CMAKE_PREFIX_PATH
# variable can be used to configure additional paths where CMake looks for the libraries.
# In this situation, additional RPATH/RUNPATH or LD_LIBRARY_PATH configuration may be
# necessary to run binaries that have been installed with `make install`.
#
# - HELFEM_BINARIES: if set to OFF, disables the building of the HelFEM binary program that
# are located under src/. This is useful in cases where only the libhelfem library is
# needed and you wish to avoid the HDF5 and libxc dependencies.
#
# - HELFEM_CMAKE_SYSTEM: if set to OFF, the CMake.system file is ignored. This is useful
# when creating multiple out-of-tree build directories from the same source directory with
# different settings, some using CMake.system and some not. Primarily useful when
# developing the build scripts.
#
option(USE_OPENMP "Compile OpenMP enabled version (for parallel calculations)?" ON)
option(HELFEM_FIND_DEPS "Try to find dependencies automatically?" OFF)
option(HELFEM_BINARIES "Compile HelFEM binaries?" ON)
option(HELFEM_CMAKE_SYSTEM "Load the CMake.system file (if present)?" ON)
# System specific definitions
if(HELFEM_CMAKE_SYSTEM AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/CMake.system")
message("Including user-provided CMake.system.")
include("${CMAKE_CURRENT_SOURCE_DIR}/CMake.system")
endif()
# Try to automatically find and configure all the dependent libraries, if the user specified
# the HELFEM_FIND_DEPS option.
#
# If the dependencies are installed in non-standard paths (e.g. somewhere under /home), then
# the CMAKE_PREFIX_PATH variables can be used to specify the path to the root of the install
# prefix. E.g. if the libraries are installed under /home/username/local/usr, then CMake
# could be invoked with:
#
# cmake -DCMAKE_PREFIX_PATH=$HOME/local/usr ..
#
if(HELFEM_FIND_DEPS)
# Try to find the Armadillo C++ library
find_package(Armadillo REQUIRED)
message("Found Armadillo ${ARMADILLO_VERSION_NAME} (v${ARMADILLO_VERSION_MAJOR}.${ARMADILLO_VERSION_MINOR}.${ARMADILLO_VERSION_PATCH})")
message("ARMADILLO_VERSION_STRING: ${ARMADILLO_VERSION_STRING}")
message("ARMADILLO_INCLUDE_DIRS: ${ARMADILLO_INCLUDE_DIRS}")
message("ARMADILLO_LIBRARIES: ${ARMADILLO_LIBRARIES}")
if(${ARMADILLO_VERSION_MAJOR} LESS "9")
message(FATAL_ERROR "Armadillo too old, version 9 or above required.")
endif()
# Try to find the GSL library
find_package(GSL REQUIRED)
message("Found GSL ${GSL_VERSION}")
message("GSL_INCLUDE_DIRS: ${GSL_INCLUDE_DIRS}")
message("GSL_LIBRARIES: ${GSL_LIBRARIES}")
# Globally link the GSL and Armadillo libraries to everything
include_directories("${ARMADILLO_INCLUDE_DIRS}" "${GSL_INCLUDE_DIRS}")
link_libraries("${GSL_LIBRARIES}" "${ARMADILLO_LIBRARIES}")
# If we should also compile all the HelFEM binaries (under src/), we need also need to
# set up the HDF5 and libxc dependencies:
if(HELFEM_BINARIES)
find_package(HDF5 REQUIRED COMPONENTS CXX)
message("HDF5_FOUND: ${HDF5_FOUND}")
message("HDF5_VERSION: ${HDF5_VERSION}")
message("HDF5_INCLUDE_DIRS: ${HDF5_INCLUDE_DIRS}")
message("HDF5_LIBRARIES: ${HDF5_LIBRARIES}")
find_package(LibXc REQUIRED PATHS ".")
message("LibXc_FOUND=${LibXc_FOUND}")
message("LIBXC_INCLUDE_DIRS=${LIBXC_INCLUDE_DIRS}")
message("LIBXC_LIBRARIES=${LIBXC_LIBRARIES}")
include_directories("${HDF5_INCLUDE_DIRS}" "${LIBXC_INCLUDE_DIRS}")
link_libraries("${HDF5_LIBRARIES}" "${LIBXC_LIBRARIES}")
endif()
endif()
# Find OpenMP support
if(USE_OPENMP)
find_package( OpenMP )
if(OPENMP_FOUND)
# Add flags to CXX flags
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()
endif()
# Include libhelfem headers
include_directories("${CMAKE_CURRENT_SOURCE_DIR}/libhelfem/include")
# Compile code
add_subdirectory(libhelfem)
if(HELFEM_BINARIES)
add_subdirectory(src)
endif()