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35 lines
1.8 KiB
35 lines
1.8 KiB
CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES
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--------------------------------------
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Implicit linker search path detected for language ``<LANG>``.
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Compilers typically pass directories containing language runtime
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libraries and default library search paths when they invoke a linker.
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These paths are implicit linker search directories for the compiler's
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language. For each language enabled by the :command:`project` or
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:command:`enable_language` command, CMake automatically detects these
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directories and reports the results in this variable.
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When linking to a static library, CMake adds the implicit link directories
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from this variable for each language used in the static library (except
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the language whose compiler is used to drive linking). In the case of an
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imported static library, the :prop_tgt:`IMPORTED_LINK_INTERFACE_LANGUAGES`
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target property lists the languages whose implicit link information is
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needed. If any of the languages is not enabled, its value for the
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``CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES`` variable may instead be provided
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by the project. Or, a :variable:`toolchain file <CMAKE_TOOLCHAIN_FILE>`
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may set the variable to a value known for the specified toolchain. It will
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either be overridden when the language is enabled, or used as a fallback.
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Some toolchains read implicit directories from an environment variable such as
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``LIBRARY_PATH``. If using such an environment variable, keep its value
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consistent when operating in a given build tree because CMake saves the value
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detected when first creating a build tree.
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If policy :policy:`CMP0060` is not set to ``NEW``, then when a library in one
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of these directories is given by full path to :command:`target_link_libraries`
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CMake will generate the ``-l<name>`` form on link lines for historical
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purposes.
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See also the :variable:`CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES` variable.
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