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70 lines
2.4 KiB
70 lines
2.4 KiB
5 years ago
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enable_language(C)
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if(NOT CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN)
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if(CMAKE_C_PLATFORM_ID STREQUAL "Linux")
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# Sanity check for platform that is definitely known to support $ORIGIN.
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message(FATAL_ERROR "Platform fails to report relative RPATH support")
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else()
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message(STATUS "Platform does not support relative RPATHs, skipping")
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endif()
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return()
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endif()
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set(CMAKE_BUILD_RPATH_USE_ORIGIN ON)
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function(CheckRpath target rpath)
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add_custom_command(
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TARGET ${target}
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POST_BUILD
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COMMAND ${CMAKE_COMMAND} -Dfile=$<TARGET_FILE:${target}> -Drpath=${rpath}
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-P "${CMAKE_CURRENT_SOURCE_DIR}/RelativeCheck.cmake"
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VERBATIM
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)
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endfunction()
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if(CMAKE_C_COMPILER_ID STREQUAL "XL" AND CMAKE_BINARY_DIR MATCHES " ")
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# XL 16.1.0.0 fails building the library if the output path contains a space.
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set(externDir)
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message(STATUS "Skipping external library test because of a toolchain bug")
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else()
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get_filename_component(externDir "${CMAKE_BINARY_DIR}" DIRECTORY)
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set(externDir "${externDir}/Relative-extern")
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endif()
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add_library(utils SHARED A.c)
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add_library(utils-sub SHARED A.c)
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set_property(TARGET utils-sub PROPERTY LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/libs)
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if(externDir)
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add_library(utils-extern SHARED A.c)
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set_property(TARGET utils-extern PROPERTY LIBRARY_OUTPUT_DIRECTORY ${externDir})
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endif()
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add_executable(main main.c)
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target_link_libraries(main utils)
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CheckRpath(main "\$ORIGIN")
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add_executable(main-norel main.c)
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target_link_libraries(main-norel utils)
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set_property(TARGET main-norel PROPERTY BUILD_RPATH_USE_ORIGIN OFF)
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CheckRpath(main-norel "${CMAKE_CURRENT_BINARY_DIR}")
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add_executable(mainsub main.c)
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target_link_libraries(mainsub utils)
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set_property(TARGET mainsub PROPERTY RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
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CheckRpath(mainsub "\$ORIGIN/../")
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add_executable(main-sub main.c)
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target_link_libraries(main-sub utils-sub)
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CheckRpath(main-sub "\$ORIGIN/libs")
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add_executable(mainsub-sub main.c)
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target_link_libraries(mainsub-sub utils-sub)
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set_property(TARGET mainsub-sub PROPERTY RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
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CheckRpath(mainsub-sub "\$ORIGIN/../libs")
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if(externDir)
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# Binaries linking to libraries outside the build tree should have an absolute RPATH.
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add_executable(main-extern main.c)
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target_link_libraries(main-extern utils-extern)
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CheckRpath(main-extern "${externDir}")
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endif()
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