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FindGeant4.cmake

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# See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.

# All rights not expressly granted are reserved.

# This software is distributed under the terms of the GNU General Public

# License v3 (GPL Version 3), copied verbatim in the file "COPYING".

# In applying this license CERN does not waive the privileges and immunities

# granted to it by virtue of its status as an Intergovernmental Organization

# or submit itself to any jurisdiction.

# use the Geant4Config.cmake provided by the Geant4 installation to create a

# single target geant4 with the include directories and libraries we need

find_package(Geant4 NO_MODULE)

if(NOT Geant4_FOUND)

return()

endif()

add_library(geant4 IMPORTED INTERFACE)

set_target_properties(geant4

PROPERTIES INTERFACE_INCLUDE_DIRECTORIES

"${Geant4_INCLUDE_DIRS}")

set(Geant4_LIBRARY_DIRS)

foreach(gl4lib IN LISTS Geant4_LIBRARIES)

find_library(gl4libpath NAMES ${gl4lib} PATHS "${Geant4_INCLUDE_DIR}/../.."

PATH_SUFFIXES lib lib64

NO_DEFAULT_PATH)

if(gl4libpath)

get_filename_component(gl4libdir ${gl4libpath} DIRECTORY)

list(APPEND Geant4_LIBRARY_DIRS ${gl4libdir})

endif()

unset(gl4libpath CACHE)

endforeach()

list(REMOVE_DUPLICATES Geant4_LIBRARY_DIRS)

set_target_properties(geant4

PROPERTIES INTERFACE_LINK_DIRECTORIES

"${Geant4_LIBRARY_DIRS}")

# Promote the imported target to global visibility

# (so we can alias it)

set_target_properties(geant4 PROPERTIES IMPORTED_GLOBAL TRUE)

# define a list containing all the variables needed by the physics datasets

# used by Geant4.

# The G4ENV list can then be used to e.g. define the ENVIRONMENT property

# of tests that use Geant4

foreach(ds IN LISTS Geant4_DATASETS)

list(APPEND G4ENV "${Geant4_DATASET_${ds}_ENVVAR}=${Geant4_DATASET_${ds}_PATH}")

endforeach()

add_library(MC::Geant4 ALIAS geant4)