# Configure EMSchur3D 
set(EMSCHUR3D_VERSION_MAJOR "0")
set(EMSCHUR3D_VERSION_MINOR "0")
set(EMSCHUR3D_VERSION_PATCH "1")
set(EMSCHUR3D_VERSION "\"${EMSCHUR3D_VERSION_MAJOR}.${EMSCHUR3D_VERSION_MINOR}.${EMSCHUR3D_VERSION_PATCH}\"")
set(EMSCHUR3D_VERSION_NOQUOTES "${EMSCHUR3D_VERSION_MAJOR}.${EMSCHUR3D_VERSION_MINOR}.${EMSCHUR3D_VERSION_PATCH}")

option ( LEMMA_MODULE_EMSCHUR3D TRUE )

find_package( SuperLU )
if (SUPERLU_FOUND)
	message( STATUS "SuperLU was found" )
	add_compile_options(-DHAVE_SUPERLU)
	INCLUDE_DIRECTORIES(${SUPERLU_INCLUDES})
endif()

#find_package( PaSTiX )
find_package( PaSTiX COMPONENTS METIS SEQ )

find_path(PASTIX_pastix_nompi.h_INCLUDE_DIRS
  #NAMES pastix/nompi.h
  NAMES pastix_nompi.h
  HINTS ${PASTIX_INCLUDE_DIRS}
)
if (NOT PASTIX_pastix_nompi.h_INCLUDE_DIRS)
  message(STATUS "A version of Pastix has been found but pastix_nompi.h does not exist in the include directory."
                 " Because Eigen tests require a version without MPI, we disable the Pastix backend.")
endif()
if(PASTIX_FOUND AND PASTIX_pastix_nompi.h_INCLUDE_DIRS)
  add_definitions("-DEIGEN_PASTIX_SUPPORT")
  include_directories(${PASTIX_INCLUDE_DIRS_DEP})
  if(SCOTCH_FOUND)
    include_directories(${SCOTCH_INCLUDE_DIRS})
    set(PASTIX_LIBRARIES ${PASTIX_LIBRARIES} ${SCOTCH_LIBRARIES})
  elseif(METIS_FOUND)
    include_directories(${METIS_INCLUDE_DIRS})
    set(PASTIX_LIBRARIES ${PASTIX_LIBRARIES} ${METIS_LIBRARIES})
  else(SCOTCH_FOUND)
#    ei_add_property(EIGEN_MISSING_BACKENDS  "PaStiX, ")
  endif(SCOTCH_FOUND)
  set(SPARSE_LIBS ${SPARSE_LIBS} ${PASTIX_LIBRARIES_DEP} ${ORDERING_LIBRARIES})
  set(PASTIX_ALL_LIBS ${PASTIX_LIBRARIES_DEP})
#  ei_add_property(EIGEN_TESTED_BACKENDS  "PaStiX, ")
else()
#  ei_add_property(EIGEN_MISSING_BACKENDS  "PaStiX, ")
endif()

if ( PASTIX_FOUND )
	message( STATUS "PaSTiX was found" )
	add_compile_options(-DHAVE_PASTIX)
	INCLUDE_DIRECTORIES(${PASTIX_INCLUDES})
endif()



find_package( Umfpack )
if ( UMFPACK_FOUND )
	message( STATUS "Umfpack was found" )
	add_compile_options(-DHAVE_UMFPACK)
	INCLUDE_DIRECTORIES(${UMFPACK_INCLUDES})
endif()

if ( LEMMA_VTK6_SUPPORT OR LEMMA_VTK7_SUPPORT OR LEMMA_VTK8_SUPPORT AND LEMMA_MODULE_EMSCHUR3D ) 

	configure_file (
		"${CMAKE_CURRENT_SOURCE_DIR}/config/EMSchur3DConfig.h.in"
		"${PROJECT_BINARY_DIR}/include/EMSchur3DConfig.h"
	)
	install ( FILES  ${PROJECT_BINARY_DIR}/include/EMSchur3DConfig.h   DESTINATION ${CMAKE_INSTALL_PREFIX}/include/Lemma/ )

	add_subdirectory("src")
	add_library( emschur3d ${EMSCHUR3DSOURCE} )  
	target_include_directories( emschur3d PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include" )

	set_target_properties(emschur3d PROPERTIES 
		VERSION  "${EMSCHUR3D_VERSION_NOQUOTES}"
		SOVERSION "${EMSCHUR3D_VERSION_MAJOR}.${LEMMA_VERSION_MINOR}"
		PROJECT_LABEL "EMSCHUR3D ${LABEL_SUFFIX}"
    	CXX_STANDARD_14
    	CXX_STANDARD_REQUIRED_ON
	)

	option ( EMSCHUR3D_ON_KINGSPEAK FALSE )
	if ( EMSCHUR3D_ON_KINGSPEAK )
    # No OpenMP
		add_compile_options(-DHAVE_PARDISO)
	#set (MKLLINK  "-L$MKLROOT/lib/intel64 -lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lpthread -Wl,-rpath=$MKLROOT/lib/intel64")
        # OpenMP R3
        set (MKLLINK  "-L$MKLROOT/lib/intel64 -Wl,-rpath=$MKLROOT/lib/intel64 -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core -liomp5 -lpthread")
		target_link_libraries(emschur3d "lemmacore" ${MKLLINK})
	endif()

	# Linking
	target_link_libraries(emschur3d "lemmacore" "fdem1d" )

	# Linking
	target_link_libraries(emschur3d ${VTK_LIBRARIES})

	if ( SUPERLU_FOUND )
		target_link_libraries(emschur3d ${SUPERLU_LIBRARIES})
	endif()
	if ( PASTIX_FOUND )
		target_link_libraries(emschur3d ${PASTIX_LIBRARIES})
		target_link_libraries(emschur3d "blas" "metis" "scotch" "scotchmetis" "scotcherr" "scotcherrexit" "hwloc")
	endif()
	if ( UMFPACK_FOUND )
		target_link_libraries(emschur3d ${UMFPACK_LIBRARIES})
	endif()

	# Testing
	if (LEMMA_ENABLE_TESTING)
		add_subdirectory(testing)
	endif()

	# Install
	install ( TARGETS emschur3d DESTINATION ${CMAKE_INSTALL_PREFIX}/lib )
	install ( FILES include/EMSchur3D  DESTINATION ${CMAKE_INSTALL_PREFIX}/include/Lemma ) 
	install ( DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_PREFIX}/include/Lemma  FILES_MATCHING PATTERN "*.h")

	#install ( DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_PREFIX}/include/Lemma/  FILES_MATCHING PATTERN "FDEM1D")
	#install ( DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_PREFIX}/include/Lemma/FDEM1D  FILES_MATCHING PATTERN "*.h")

	# Examples
	if (	LEMMA_BUILD_EXAMPLES)
		add_subdirectory(examples)
	endif()
else()
	if ( LEMMA_MODULE_EMSCHUR3D )
        message ( FATAL_ERROR
	          "EMSChur3D requires VTK 6, 7, or 8"	
		)
	endif()
       
endif()