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https://github.com/Kitware/CMake.git
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dd4a6dff92
We represent stub libraries, e.g., for CUDA, using imported `SHARED` library targets with only `IMPORTED_IMPLIB`, and no `IMPORTED_LOCATION`, to indicate that the stub file is meant only for linkers and not dynamic loaders. See commit7351d590ee(cmTarget: Add a way to represent imported shared library stubs, 2023-07-17, v3.28.0-rc1~344^2) and commitfc6508921c(cmComputeLinkInformation: Restore soname lookup for non-imported targets, 2023-12-05, v3.28.0~4^2). If a shared library is linked to a stub, it has a `NEEDED` field populated with the `SONAME` found in the stub. When a dependent target links to such a shared library, some linkers want to find a library file on disk and load it to see what symbols it provides. This is necessary for linkers that enforce `--no-allow-shlib-undefined`. On hosts with only the stub library installed, e.g., with only the CUDA toolkit development package, the real runtime library corresponding to the stub's `SONAME` may not even exist, so no `-rpath-link` flag can help linkers find it. Pass the stub library to linkers explicitly so they can find it without searching.
60 lines
2.1 KiB
CMake
60 lines
2.1 KiB
CMake
include(RunCMake)
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function(run_RuntimePath name)
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# Use a single build tree for a few tests without cleaning.
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set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${name}-build)
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set(RunCMake_TEST_NO_CLEAN 1)
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if(NOT RunCMake_GENERATOR_IS_MULTI_CONFIG)
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set(RunCMake_TEST_OPTIONS -Dcfg_dir= -DCMAKE_BUILD_TYPE=Debug)
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else()
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set(RunCMake_TEST_OPTIONS -Dcfg_dir=/$<CONFIG>)
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endif()
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file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
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file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
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run_cmake(${name})
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run_cmake_command(${name}-build ${CMAKE_COMMAND} --build . --config Debug)
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endfunction()
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set(cfg_dir)
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if(RunCMake_GENERATOR_IS_MULTI_CONFIG)
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set(cfg_dir /Debug)
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endif()
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if(CMAKE_EXECUTABLE_FORMAT STREQUAL "ELF")
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run_RuntimePath(SymlinkImplicit)
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run_cmake_command(SymlinkImplicitCheck
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${CMAKE_COMMAND} -Ddir=${RunCMake_BINARY_DIR}/SymlinkImplicit-build -Dcfg_dir=${cfg_dir} -P ${RunCMake_SOURCE_DIR}/SymlinkImplicitCheck.cmake)
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run_RuntimePath(Relative)
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run_RuntimePath(Genex)
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run_cmake_command(GenexCheck
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${CMAKE_COMMAND} -Ddir=${RunCMake_BINARY_DIR}/Genex-build -P ${RunCMake_SOURCE_DIR}/GenexCheck.cmake)
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endif()
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block()
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set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/Stub-build)
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if(RunCMake_GENERATOR_IS_MULTI_CONFIG)
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set(bin_dir "${RunCMake_TEST_BINARY_DIR}/Debug")
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set(lib_dir "${RunCMake_TEST_BINARY_DIR}/lib/Debug")
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else()
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set(bin_dir "${RunCMake_TEST_BINARY_DIR}")
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set(lib_dir "${RunCMake_TEST_BINARY_DIR}/lib")
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endif()
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run_cmake(Stub)
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set(RunCMake_TEST_NO_CLEAN 1)
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run_cmake_command(Stub-build ${CMAKE_COMMAND} --build . --config Debug)
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if(CMAKE_SYSTEM_NAME MATCHES "^(Linux|SunOS)$|BSD")
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set(ldpath LD_LIBRARY_PATH)
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elseif(CMAKE_SYSTEM_NAME MATCHES "^(Darwin)$")
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set(ldpath DYLD_LIBRARY_PATH)
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elseif(CMAKE_SYSTEM_NAME MATCHES "^(AIX)$")
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set(ldpath LIBPATH)
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endif()
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if(ldpath)
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run_cmake_command(Stub-fail ${CMAKE_COMMAND} -E env LANG=C ${bin_dir}/StubExe)
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run_cmake_command(Stub-pass ${CMAKE_COMMAND} -E env --modify ${ldpath}=path_list_prepend:${lib_dir} ${bin_dir}/StubExe)
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endif()
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endblock()
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