##############################################################################
# cmake configuration file for DD4hep
#
# returns following variables:
#
#   DD4hep_FOUND      : set to TRUE if DD4hep found
#   DD4hep_VERSION    : package version
#   DD4hep_ROOT       : path to this DD4hep installation
#   DD4hep_LIBRARIES  : list of DD4hep libraries
#   DD4hep_INCLUDE_DIRS  : list of paths to be used with INCLUDE_DIRECTORIES
#   DD4hep_LIBRARY_DIRS  : list of paths to be used with LINK_DIRECTORIES
#
# @author Jan Engels, Desy
##############################################################################

# Locate the DD4hep install prefix. This CMake file is installed in two
# different locations (root and "cmake" subdir) that we must disambiguate.
get_filename_component(_thisdir "${CMAKE_CURRENT_LIST_FILE}" PATH)
get_filename_component(_lastdir "${_thisdir}" NAME)
if (_lastdir STREQUAL "cmake")
  get_filename_component(_thisdir "${_thisdir}" PATH)
endif()

set ( DD4hep_DIR                "${_thisdir}" )
set ( DD4hep_ROOT               "${_thisdir}" )
set ( DD4hep_VERSION            "@DD4hep_VERSION@" )
set ( DD4hep_SOVERSION          "@DD4hep_SOVERSION@" )
set ( DD4HEP_USE_GEANT4         "@DD4HEP_USE_GEANT4@" )
set ( DD4HEP_USE_LCIO           "@DD4HEP_USE_LCIO@" )
set ( DD4HEP_USE_XERCESC        "@DD4HEP_USE_XERCESC@" )
set ( DD4hep_BUILD_CXX_STANDARD @CMAKE_CXX_STANDARD@ )

# figure out if including build has compatible standard set
if (NOT "${CMAKE_CXX_STANDARD}" EQUAL "${DD4hep_BUILD_CXX_STANDARD}")
  message( SEND_ERROR "CMAKE_CXX_STANDARD is set to C++${CMAKE_CXX_STANDARD} but C++${DD4hep_BUILD_CXX_STANDARD} is required for DD4hep.")
endif()

# set ( GEANT4_USE_CLHEP   "@GEANT4_USE_CLHEP@" )
# set ( ROOTSYS            "$ENV{ROOTSYS}" )
# set ( ROOT_DIR           "$ENV{ROOTSYS}/cmake" )
# set ( ROOT_VERSION       "@ROOT_VERSION@" )

include ( ${DD4hep_DIR}/cmake/DD4hep.cmake )

set (CMAKE_MODULE_PATH  ${CMAKE_MODULE_PATH} ${DD4hep_DIR}/cmake  )

# ---------- include dirs -----------------------------------------------------
# do not store find results in cache
set(DD4hep_INCLUDE_DIRS "")

# ---------- default build type  --------------------------------------------------------
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  set (CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "One of: None Debug Release RelWithDebInfo MinSizeRel." FORCE)
endif()


FIND_PACKAGE(Boost REQUIRED COMPONENTS filesystem system)
SET_TARGET_PROPERTIES(Boost::boost
  PROPERTIES
  INTERFACE_COMPILE_DEFINITIONS BOOST_SPIRIT_USE_PHOENIX_V3
  )

find_package(Geant4 10.2.2 REQUIRED gdml ui_all vis_all)
DD4HEP_SETUP_GEANT4_TARGETS()

FIND_PACKAGE(ROOT REQUIRED)
DD4HEP_SETUP_ROOT_TARGETS()

if(DD4HEP_USE_LCIO)
  find_package(LCIO REQUIRED)
  DD4HEP_SETUP_LCIO_TARGETS()
endif()

if(NOT CMAKE_PROJECT_NAME STREQUAL DD4hep)
  include("${DD4hep_ROOT}/cmake/DD4hepConfig-targets.cmake")
endif()

# ---------- include dirs -----------------------------------------------------
# do not store find results in cache
GET_TARGET_PROPERTY(DD4hep_INCLUDE_DIRS DD4hep::DDCore INTERFACE_INCLUDE_DIRECTORIES)
MESSAGE(STATUS "include dirs ${DD4hep_INCLUDE_DIRS}")

# ---------- libraries --------------------------------------------------------
set(DD4hep_LIBRARIES DD4hep::DDCore)

SET(DD4hep_COMPONENT_LIBRARIES)
IF(DD4hep_FIND_COMPONENTS)
  dd4hep_print( "|++> DD4hep: Looking for Components: ${DD4hep_FIND_COMPONENTS}" )
  FOREACH(comp ${DD4hep_FIND_COMPONENTS})
    IF(NOT TARGET DD4hep::${comp})
      MESSAGE(FATAL_ERROR "|++> Did not find required component: ${comp}")
    ENDIF()
    LIST(APPEND DD4hep_COMPONENT_LIBRARIES DD4hep::${comp})
  ENDFOREACH()
ENDIF()

#---- build with xercesc or tinyxml ?
if( @DD4HEP_USE_XERCESC@ )
  set( DD4HEP_USE_XERCESC True )
endif()
INCLUDE( ${DD4hep_DIR}/cmake/DD4hep_XML_setup.cmake )

#----- APPLE ? -------

set( USE_DYLD @USE_DYLD@ )
MARK_AS_ADVANCED( USE_DYLD )

# ---------- final checking ---------------------------------------------------
INCLUDE( FindPackageHandleStandardArgs )
# set DD4HEP_FOUND to TRUE if all listed variables are TRUE and not empty
FIND_PACKAGE_HANDLE_STANDARD_ARGS( DD4hep DEFAULT_MSG DD4hep_DIR DD4hep_INCLUDE_DIRS DD4hep_LIBRARIES )

SET( DD4hep_FOUND ${DD4HEP_FOUND} )