Gabriele Cosmo
117 lines
4.9 KiB
CMake
117 lines
4.9 KiB
CMake
#.rst:
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# G4WindowsDLLSupport
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# -------------------
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#
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# Provides functions needed to support builds of DLLs both pre and post
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# CMake 3.4. This version introduced the WINDOWS_EXPORT_ALL_SYMBOLS
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# property, removing the need for the shipped `genwindef` program.
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#
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# With Geant4 10.4 and below having a minimum version requirement of
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# CMake 3.3, we need to provide both so that patches can be applied
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# to these versions without requiring clients to bump their CMake version.
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#
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#-----------------------------------------------------------------
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# License and Disclaimer
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#
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# The Geant4 software is copyright of the Copyright Holders of
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# the Geant4 Collaboration. It is provided under the terms and
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# conditions of the Geant4 Software License, included in the file
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# LICENSE and available at http://cern.ch/geant4/license . These
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# include a list of copyright holders.
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#
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# Neither the authors of this software system, nor their employing
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# institutes,nor the agencies providing financial support for this
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# work make any representation or warranty, express or implied,
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# regarding this software system or assume any liability for its
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# use. Please see the license in the file LICENSE and URL above
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# for the full disclaimer and the limitation of liability.
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#
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# This code implementation is the result of the scientific and
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# technical work of the GEANT4 collaboration.
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# By using, copying, modifying or distributing the software (or
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# any work based on the software) you agree to acknowledge its
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# use in resulting scientific publications, and indicate your
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# acceptance of all terms of the Geant4 Software license.
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#
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#-----------------------------------------------------------------
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if(NOT __G4WINDOWSDLLSUPPORT_INCLUDED)
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set(__G4WINDOWSDLLSUPPORT_INCLUDED)
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else()
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return()
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endif()
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# On WIN32, we need to build the genwindef application to create export
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# def files for building DLLs.
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# We only use it as a helper application at the moment so we exclude it from
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# the ALL target.
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if(WIN32)
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# Assume the sources are co-located
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get_filename_component(_genwindef_src_dir ${CMAKE_CURRENT_LIST_FILE} PATH)
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add_executable(genwindef EXCLUDE_FROM_ALL
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${_genwindef_src_dir}/genwindef/genwindef.cpp
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${_genwindef_src_dir}/genwindef/LibSymbolInfo.h
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${_genwindef_src_dir}/genwindef/LibSymbolInfo.cpp)
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endif()
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#.rst:
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# Macro for supporting DLL build on CMake < 3.4
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macro(__geant4_add_dll_old)
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# It's an error to call this on non-WIN32 platforms
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if(NOT WIN32)
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message(FATAL_ERROR "__geant4_add_dll_old is not callable on non-Windows platforms!")
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endif()
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# - Takes same args as geant4_library_target for compatibility
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cmake_parse_arguments(__G4ADDOLDDLL
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""
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"NAME" "SOURCES;GEANT4_LINK_LIBRARIES;LINK_LIBRARIES"
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${ARGN}
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)
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# We have to generate the def export file from an archive library.
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# This is a temporary separate from a real archive library, and
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# even though it's static, we need to mark that it will have
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# DLL symbols via the G4LIB_BUILD_DLL macro
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add_library(_${__G4ADDOLDDLL_NAME}-archive STATIC EXCLUDE_FROM_ALL ${__G4ADDOLDDLL_SOURCES})
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set(_archive _${__G4ADDOLDDLL_NAME}-archive)
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target_compile_features(${_archive} PUBLIC ${GEANT4_TARGET_COMPILE_FEATURES})
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target_compile_definitions(${_archive} PUBLIC -DG4LIB_BUILD_DLL)
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# - Add the config specific compile definitions
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geant4_compile_definitions_config(${_archive})
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# - Create the .def file for this library
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# Use generator expressions to get path to per-mode lib and
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# older CMAKE_CFG_INTDIR variable to set name of per-mode def
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# file (Needed as generator expressions cannot be used in argument
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# to OUTPUT...
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add_custom_command(OUTPUT _${__G4ADDOLDDLL_NAME}-${CMAKE_CFG_INTDIR}.def
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COMMAND genwindef -o _${__G4ADDOLDDLL_NAME}-${CMAKE_CFG_INTDIR}.def -l ${__G4ADDOLDDLL_NAME} $<TARGET_FILE:${_archive}>
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DEPENDS ${_archive} genwindef)
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# - Now we can build the DLL
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# We create it from a dummy empty C++ file plus the def file.
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# Also set the public compile definition on it so that clients
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# will set correct macro automatically.
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file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/_${__G4ADDOLDDLL_NAME}.cpp
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"// empty _${__G4ADDOLDDLL_NAME}.cpp\n")
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add_library(${__G4ADDOLDDLL_NAME} SHARED _${__G4ADDOLDDLL_NAME}.cpp
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_${__G4ADDOLDDLL_NAME}-${CMAKE_CFG_INTDIR}.def)
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target_compile_definitions(${__G4ADDOLDDLL_NAME} PUBLIC -DG4LIB_BUILD_DLL)
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target_compile_features(${__G4ADDOLDDLL_NAME} PUBLIC ${GEANT4_TARGET_COMPILE_FEATURES})
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# - Link the DLL.
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# We link it to the archive, and the supplied libraries,
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# but then remove the archive from the LINK_INTERFACE.
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target_link_libraries(${__G4ADDOLDDLL_NAME}
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${_archive}
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${__G4ADDOLDDLL_GEANT4_LINK_LIBRARIES}
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${__G4ADDOLDDLL_LINK_LIBRARIES})
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set_target_properties(${__G4ADDOLDDLL_NAME}
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PROPERTIES INTERFACE_LINK_LIBRARIES "${__G4ADDOLDDLL_GEANT4_LINK_LIBRARIES};${__G4ADDOLDDLL_LINK_LIBRARIES}")
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endmacro()
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