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Use the Key4hepConfig flag to set the standard, compiler flags and rpath magic. #235

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Sep 10, 2024
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42 changes: 2 additions & 40 deletions CMakeLists.txt
Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,8 @@ find_package(Gaudi REQUIRED)
endif()
find_package(EDM4HEP REQUIRED)

include(cmake/Key4hepConfig.cmake)

include(GNUInstallDirs)
include(CTest)

Expand All @@ -37,44 +39,6 @@ if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
"Install path prefix, prepended onto install directories." FORCE )
endif()

# Set up C++ Standard
# ``-DCMAKE_CXX_STANDARD=<standard>`` when invoking CMake
set(CMAKE_CXX_STANDARD 20 CACHE STRING "")

if(NOT CMAKE_CXX_STANDARD MATCHES "20")
message(FATAL_ERROR "Unsupported C++ standard: ${CMAKE_CXX_STANDARD}")
endif()

#---RPATH options-------------------------------------------------------------------------------
option(K4FWCORE_SET_RPATH "Link libraries with built-in RPATH (run-time search path)" ON)

# When building, don't use the install RPATH already (but later on when installing)
set(CMAKE_SKIP_BUILD_RPATH FALSE) # don't skip the full RPATH for the build tree
set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE) # use always the build RPATH for the build tree
set(CMAKE_MACOSX_RPATH TRUE) # use RPATH for MacOSX
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE) # point to directories outside the build tree to the install RPATH

# Check whether to add RPATH to the installation (the build tree always has the RPATH enabled)
if(APPLE)
set(CMAKE_INSTALL_NAME_DIR "@rpath")
set(CMAKE_INSTALL_RPATH "@loader_path/../lib") # self relative LIBDIR
# the RPATH to be used when installing, but only if it's not a system directory
list(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX}/lib" isSystemDir)
if("${isSystemDir}" STREQUAL "-1")
set(CMAKE_INSTALL_RPATH "@loader_path/../lib")
endif("${isSystemDir}" STREQUAL "-1")
elseif(K4FWCORE_SET_RPATH)
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib") # install LIBDIR
# the RPATH to be used when installing, but only if it's not a system directory
list(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX}/lib" isSystemDir)
if("${isSystemDir}" STREQUAL "-1")
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
endif("${isSystemDir}" STREQUAL "-1")
else()
set(CMAKE_SKIP_INSTALL_RPATH TRUE) # skip the full RPATH for the install tree
endif()


add_subdirectory(k4FWCore)
add_subdirectory(k4Interface)
add_subdirectory(python)
Expand All @@ -89,8 +53,6 @@ if(ENABLE_CPACK)
endif()




install(EXPORT ${PROJECT_NAME}Targets
NAMESPACE ${PROJECT_NAME}::
FILE "${PROJECT_NAME}Targets.cmake"
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