Merge topic 'CMakePackageConfigHelpers-INSTALL_PREFIX'
704830aeHelp: Add notes for topic 'CMakePackageConfigHelpers-INSTALL_PREFIX'e3007c92CMakePackageConfigHelpers: Add unit tests for INSTALL_PREFIX optiond057bf85CMakePackageConfigHelpers: Add INSTALL_PREFIX optionf3dd116cCMakePackageConfigHelpers: restructure documentation and document commands64eca30dCMakePackageConfigHelpers: Remove unused variable
This commit is contained in:
Brad King
CMake Topic Stage
commit
52584050c2
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@ -0,0 +1,7 @@
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CMakePackageConfigHelpers-INSTALL_PREFIX
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----------------------------------------
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* The :module:`CMakePackageConfigHelpers` module
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:command:`configure_package_config_file` command learned a new
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``INSTALL_PREFIX`` option to generate package configuration files
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meant for a prefix other than :variable:`CMAKE_INSTALL_PREFIX`.
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@ -2,29 +2,36 @@
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# CMakePackageConfigHelpers
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# -------------------------
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#
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# CONFIGURE_PACKAGE_CONFIG_FILE(), WRITE_BASIC_PACKAGE_VERSION_FILE()
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# Helpers functions for creating config files that can be included by other
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# projects to find and use a package.
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#
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# Adds the :command:`configure_package_config_file()` and
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# :command:`write_basic_package_version_file()` commands.
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#
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# Generating a Package Configuration File
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# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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#
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# ::
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# .. command:: configure_package_config_file
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#
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# CONFIGURE_PACKAGE_CONFIG_FILE(<input> <output> INSTALL_DESTINATION <path>
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# Create a config file for a project::
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#
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# configure_package_config_file(<input> <output> INSTALL_DESTINATION <path>
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# [PATH_VARS <var1> <var2> ... <varN>]
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# [NO_SET_AND_CHECK_MACRO]
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# [NO_CHECK_REQUIRED_COMPONENTS_MACRO])
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# [NO_CHECK_REQUIRED_COMPONENTS_MACRO]
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# [INSTALL_PREFIX <path>])
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#
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#
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# ``configure_package_config_file()`` should be used instead of the plain
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# :command:`configure_file()` command when creating the ``<Name>Config.cmake``
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# or ``<Name>-config.cmake`` file for installing a project or library. It helps
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# making the resulting package relocatable by avoiding hardcoded paths in the
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# installed ``Config.cmake`` file.
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#
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# CONFIGURE_PACKAGE_CONFIG_FILE() should be used instead of the plain
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# configure_file() command when creating the <Name>Config.cmake or
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# <Name>-config.cmake file for installing a project or library. It
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# helps making the resulting package relocatable by avoiding hardcoded
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# paths in the installed Config.cmake file.
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# In a ``FooConfig.cmake`` file there may be code like this to make the install
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# destinations know to the using project:
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#
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# In a FooConfig.cmake file there may be code like this to make the
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# install destinations know to the using project:
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#
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# ::
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# .. code-block:: cmake
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#
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# set(FOO_INCLUDE_DIR "@CMAKE_INSTALL_FULL_INCLUDEDIR@" )
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# set(FOO_DATA_DIR "@CMAKE_INSTALL_PREFIX@/@RELATIVE_DATA_INSTALL_DIR@" )
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@ -32,121 +39,133 @@
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# ...logic to determine installedPrefix from the own location...
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# set(FOO_CONFIG_DIR "${installedPrefix}/@CONFIG_INSTALL_DIR@" )
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#
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# All 4 options shown above are not sufficient, since the first 3
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# hardcode the absolute directory locations, and the 4th case works only
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# if the logic to determine the installedPrefix is correct, and if
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# CONFIG_INSTALL_DIR contains a relative path, which in general cannot
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# be guaranteed. This has the effect that the resulting FooConfig.cmake
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# file would work poorly under Windows and OSX, where users are used to
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# choose the install location of a binary package at install time,
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# independent from how CMAKE_INSTALL_PREFIX was set at build/cmake time.
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# All 4 options shown above are not sufficient, since the first 3 hardcode the
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# absolute directory locations, and the 4th case works only if the logic to
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# determine the ``installedPrefix`` is correct, and if ``CONFIG_INSTALL_DIR``
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# contains a relative path, which in general cannot be guaranteed. This has the
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# effect that the resulting ``FooConfig.cmake`` file would work poorly under
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# Windows and OSX, where users are used to choose the install location of a
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# binary package at install time, independent from how
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# :variable:`CMAKE_INSTALL_PREFIX` was set at build/cmake time.
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#
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# Using CONFIGURE_PACKAGE_CONFIG_FILE() helps. If used correctly, it
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# makes the resulting FooConfig.cmake file relocatable. Usage:
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# Using ``configure_package_config_file`` helps. If used correctly, it makes
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# the resulting ``FooConfig.cmake`` file relocatable. Usage:
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#
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# ::
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#
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# 1. write a FooConfig.cmake.in file as you are used to
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# 2. insert a line containing only the string "@PACKAGE_INIT@"
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# 3. instead of set(FOO_DIR "@SOME_INSTALL_DIR@"), use set(FOO_DIR "@PACKAGE_SOME_INSTALL_DIR@")
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# (this must be after the @PACKAGE_INIT@ line)
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# 4. instead of using the normal configure_file(), use CONFIGURE_PACKAGE_CONFIG_FILE()
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# 1. write a ``FooConfig.cmake.in`` file as you are used to
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# 2. insert a line containing only the string ``@PACKAGE_INIT@``
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# 3. instead of ``set(FOO_DIR "@SOME_INSTALL_DIR@")``, use
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# ``set(FOO_DIR "@PACKAGE_SOME_INSTALL_DIR@")`` (this must be after the
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# ``@PACKAGE_INIT@`` line)
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# 4. instead of using the normal :command:`configure_file()`, use
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# ``configure_package_config_file()``
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#
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#
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#
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# The <input> and <output> arguments are the input and output file, the
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# same way as in configure_file().
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# The ``<input>`` and ``<output>`` arguments are the input and output file, the
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# same way as in :command:`configure_file()`.
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#
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# The <path> given to INSTALL_DESTINATION must be the destination where
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# the FooConfig.cmake file will be installed to. This can either be a
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# relative or absolute path, both work.
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# The ``<path>`` given to ``INSTALL_DESTINATION`` must be the destination where
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# the ``FooConfig.cmake`` file will be installed to. This path can either be
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# absolute, or relative to the ``INSTALL_PREFIX`` path.
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#
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# The variables <var1> to <varN> given as PATH_VARS are the variables
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# which contain install destinations. For each of them the macro will
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# create a helper variable PACKAGE_<var...>. These helper variables
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# must be used in the FooConfig.cmake.in file for setting the installed
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# location. They are calculated by CONFIGURE_PACKAGE_CONFIG_FILE() so
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# that they are always relative to the installed location of the
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# package. This works both for relative and also for absolute
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# locations. For absolute locations it works only if the absolute
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# location is a subdirectory of CMAKE_INSTALL_PREFIX.
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# The variables ``<var1>`` to ``<varN>`` given as ``PATH_VARS`` are the
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# variables which contain install destinations. For each of them the macro will
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# create a helper variable ``PACKAGE_<var...>``. These helper variables must be
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# used in the ``FooConfig.cmake.in`` file for setting the installed location.
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# They are calculated by ``configure_package_config_file`` so that they are
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# always relative to the installed location of the package. This works both for
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# relative and also for absolute locations. For absolute locations it works
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# only if the absolute location is a subdirectory of ``INSTALL_PREFIX``.
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#
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# By default configure_package_config_file() also generates two helper
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# macros, set_and_check() and check_required_components() into the
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# FooConfig.cmake file.
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# If the ``INSTALL_PREFIX`` argument is passed, this is used as base path to
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# calculate all the relative paths. The ``<path>`` argument must be an absolute
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# path. If this argument is not passed, the :variable:`CMAKE_INSTALL_PREFIX`
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# variable will be used instead. The default value is good when generating a
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# FooConfig.cmake file to use your package from the install tree. When
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# generating a FooConfig.cmake file to use your package from the build tree this
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# option should be used.
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#
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# set_and_check() should be used instead of the normal set() command for
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# setting directories and file locations. Additionally to setting the
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# variable it also checks that the referenced file or directory actually
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# exists and fails with a FATAL_ERROR otherwise. This makes sure that
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# the created FooConfig.cmake file does not contain wrong references.
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# When using the NO_SET_AND_CHECK_MACRO, this macro is not generated
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# into the FooConfig.cmake file.
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# By default ``configure_package_config_file`` also generates two helper macros,
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# ``set_and_check()`` and ``check_required_components()`` into the
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# ``FooConfig.cmake`` file.
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#
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# check_required_components(<package_name>) should be called at the end
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# of the FooConfig.cmake file if the package supports components. This
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# macro checks whether all requested, non-optional components have been
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# found, and if this is not the case, sets the Foo_FOUND variable to
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# FALSE, so that the package is considered to be not found. It does
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# that by testing the Foo_<Component>_FOUND variables for all requested
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# required components. When using the NO_CHECK_REQUIRED_COMPONENTS
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# option, this macro is not generated into the FooConfig.cmake file.
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# ``set_and_check()`` should be used instead of the normal ``set()`` command for
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# setting directories and file locations. Additionally to setting the variable
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# it also checks that the referenced file or directory actually exists and fails
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# with a ``FATAL_ERROR`` otherwise. This makes sure that the created
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# ``FooConfig.cmake`` file does not contain wrong references.
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# When using the ``NO_SET_AND_CHECK_MACRO``, this macro is not generated
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# into the ``FooConfig.cmake`` file.
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#
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# ``check_required_components(<package_name>)`` should be called at the end of
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# the ``FooConfig.cmake`` file if the package supports components. This macro
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# checks whether all requested, non-optional components have been found, and if
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# this is not the case, sets the ``Foo_FOUND`` variable to ``FALSE``, so that
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# the package is considered to be not found. It does that by testing the
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# ``Foo_<Component>_FOUND`` variables for all requested required components.
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# When using the ``NO_CHECK_REQUIRED_COMPONENTS_MACRO`` option, this macro is
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# not generated into the ``FooConfig.cmake`` file.
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#
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# For an example see below the documentation for
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# WRITE_BASIC_PACKAGE_VERSION_FILE().
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# :command:`write_basic_package_version_file()`.
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#
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# Generating a Package Version File
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# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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#
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# .. command:: write_basic_package_version_file
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#
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# Create a version file for a project::
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#
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# write_basic_package_version_file(<filename>
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# [VERSION <major.minor.patch>]
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# COMPATIBILITY <AnyNewerVersion|SameMajorVersion|ExactVersion> )
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#
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#
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# Writes a file for use as ``<package>ConfigVersion.cmake`` file to
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# ``<filename>``. See the documentation of :command:`find_package()` for
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# details on this.
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#
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# ::
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# ``<filename>`` is the output filename, it should be in the build tree.
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# ``<major.minor.patch>`` is the version number of the project to be installed.
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#
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# WRITE_BASIC_PACKAGE_VERSION_FILE( filename [VERSION major.minor.patch] COMPATIBILITY (AnyNewerVersion|SameMajorVersion|ExactVersion) )
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# If no ``VERSION`` is given, the :variable:`PROJECT_VERSION` variable is used.
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# If this hasn't been set, it errors out.
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#
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# The ``COMPATIBILITY`` mode ``AnyNewerVersion`` means that the installed
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# package version will be considered compatible if it is newer or exactly the
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# same as the requested version. This mode should be used for packages which
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# are fully backward compatible, also across major versions.
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# If ``SameMajorVersion`` is used instead, then the behaviour differs from
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# ``AnyNewerVersion`` in that the major version number must be the same as
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# requested, e.g. version 2.0 will not be considered compatible if 1.0 is
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# requested. This mode should be used for packages which guarantee backward
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# compatibility within the same major version.
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# If ``ExactVersion`` is used, then the package is only considered compatible if
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# the requested version matches exactly its own version number (not considering
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# the tweak version). For example, version 1.2.3 of a package is only
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# considered compatible to requested version 1.2.3. This mode is for packages
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# without compatibility guarantees.
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# If your project has more elaborated version matching rules, you will need to
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# write your own custom ``ConfigVersion.cmake`` file instead of using this
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# macro.
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#
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#
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# Writes a file for use as <package>ConfigVersion.cmake file to
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# <filename>. See the documentation of find_package() for details on
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# this.
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#
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# ::
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#
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# filename is the output filename, it should be in the build tree.
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# major.minor.patch is the version number of the project to be installed
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#
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# If no ``VERSION`` is given, the :variable:`PROJECT_VERSION` variable
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# is used. If this hasn't been set, it errors out.
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#
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# The COMPATIBILITY mode AnyNewerVersion means that the installed
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# package version will be considered compatible if it is newer or
|
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# exactly the same as the requested version. This mode should be used
|
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# for packages which are fully backward compatible, also across major
|
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# versions. If SameMajorVersion is used instead, then the behaviour
|
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# differs from AnyNewerVersion in that the major version number must be
|
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# the same as requested, e.g. version 2.0 will not be considered
|
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# compatible if 1.0 is requested. This mode should be used for packages
|
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# which guarantee backward compatibility within the same major version.
|
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# If ExactVersion is used, then the package is only considered
|
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# compatible if the requested version matches exactly its own version
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# number (not considering the tweak version). For example, version
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# 1.2.3 of a package is only considered compatible to requested version
|
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# 1.2.3. This mode is for packages without compatibility guarantees.
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# If your project has more elaborated version matching rules, you will
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# need to write your own custom ConfigVersion.cmake file instead of
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# using this macro.
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#
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# Internally, this macro executes configure_file() to create the
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# resulting version file. Depending on the COMPATIBLITY, either the
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# file BasicConfigVersion-SameMajorVersion.cmake.in or
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# BasicConfigVersion-AnyNewerVersion.cmake.in is used. Please note that
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# Internally, this macro executes :command:`configure_file()` to create the
|
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# resulting version file. Depending on the ``COMPATIBLITY``, either the file
|
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# ``BasicConfigVersion-SameMajorVersion.cmake.in`` or
|
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# ``BasicConfigVersion-AnyNewerVersion.cmake.in`` is used. Please note that
|
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# these two files are internal to CMake and you should not call
|
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# configure_file() on them yourself, but they can be used as starting
|
||||
# point to create more sophisticted custom ConfigVersion.cmake files.
|
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# :command:`configure_file()` on them yourself, but they can be used as starting
|
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# point to create more sophisticted custom ``ConfigVersion.cmake`` files.
|
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#
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# Example Generating Package Files
|
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# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
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#
|
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# Example using both :command:`configure_package_config_file` and
|
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# ``write_basic_package_version_file()``:
|
||||
#
|
||||
# Example using both configure_package_config_file() and
|
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# write_basic_package_version_file(): CMakeLists.txt:
|
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# ``CMakeLists.txt``:
|
||||
#
|
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# ::
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# .. code-block:: cmake
|
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#
|
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# set(INCLUDE_INSTALL_DIR include/ ... CACHE )
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# set(LIB_INSTALL_DIR lib/ ... CACHE )
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|
|
@ -162,11 +181,9 @@
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# install(FILES ${CMAKE_CURRENT_BINARY_DIR}/FooConfig.cmake ${CMAKE_CURRENT_BINARY_DIR}/FooConfigVersion.cmake
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# DESTINATION ${LIB_INSTALL_DIR}/Foo/cmake )
|
||||
#
|
||||
# ``FooConfig.cmake.in``:
|
||||
#
|
||||
#
|
||||
# With a FooConfig.cmake.in:
|
||||
#
|
||||
# ::
|
||||
# .. code-block:: cmake
|
||||
#
|
||||
# set(FOO_VERSION x.y.z)
|
||||
# ...
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|
|
@ -175,10 +192,6 @@
|
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# set_and_check(FOO_INCLUDE_DIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
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# set_and_check(FOO_SYSCONFIG_DIR "@PACKAGE_SYSCONFIG_INSTALL_DIR@")
|
||||
#
|
||||
#
|
||||
#
|
||||
# ::
|
||||
#
|
||||
# check_required_components(Foo)
|
||||
|
||||
|
||||
|
|
@ -203,11 +216,9 @@ macro(WRITE_BASIC_PACKAGE_VERSION_FILE)
|
|||
write_basic_config_version_file(${ARGN})
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||||
endmacro()
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|
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set(cfpch_dir ${CMAKE_CURRENT_LIST_DIR})
|
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|
||||
function(CONFIGURE_PACKAGE_CONFIG_FILE _inputFile _outputFile)
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||||
set(options NO_SET_AND_CHECK_MACRO NO_CHECK_REQUIRED_COMPONENTS_MACRO)
|
||||
set(oneValueArgs INSTALL_DESTINATION )
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||||
set(oneValueArgs INSTALL_DESTINATION INSTALL_PREFIX)
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set(multiValueArgs PATH_VARS )
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|
||||
cmake_parse_arguments(CCF "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
|
||||
|
|
@ -220,20 +231,30 @@ function(CONFIGURE_PACKAGE_CONFIG_FILE _inputFile _outputFile)
|
|||
message(FATAL_ERROR "No INSTALL_DESTINATION given to CONFIGURE_PACKAGE_CONFIG_FILE()")
|
||||
endif()
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||||
|
||||
if(DEFINED CCF_INSTALL_PREFIX)
|
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if(IS_ABSOLUTE "${CCF_INSTALL_PREFIX}")
|
||||
set(installPrefix "${CCF_INSTALL_PREFIX}")
|
||||
else()
|
||||
message(FATAL_ERROR "INSTALL_PREFIX must be an absolute path")
|
||||
endif()
|
||||
else()
|
||||
set(installPrefix "${CMAKE_INSTALL_PREFIX}")
|
||||
endif()
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||||
|
||||
if(IS_ABSOLUTE "${CCF_INSTALL_DESTINATION}")
|
||||
set(absInstallDir "${CCF_INSTALL_DESTINATION}")
|
||||
else()
|
||||
set(absInstallDir "${CMAKE_INSTALL_PREFIX}/${CCF_INSTALL_DESTINATION}")
|
||||
set(absInstallDir "${installPrefix}/${CCF_INSTALL_DESTINATION}")
|
||||
endif()
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||||
|
||||
file(RELATIVE_PATH PACKAGE_RELATIVE_PATH "${absInstallDir}" "${CMAKE_INSTALL_PREFIX}" )
|
||||
file(RELATIVE_PATH PACKAGE_RELATIVE_PATH "${absInstallDir}" "${installPrefix}" )
|
||||
|
||||
foreach(var ${CCF_PATH_VARS})
|
||||
if(NOT DEFINED ${var})
|
||||
message(FATAL_ERROR "Variable ${var} does not exist")
|
||||
else()
|
||||
if(IS_ABSOLUTE "${${var}}")
|
||||
string(REPLACE "${CMAKE_INSTALL_PREFIX}" "\${PACKAGE_PREFIX_DIR}"
|
||||
string(REPLACE "${installPrefix}" "\${PACKAGE_PREFIX_DIR}"
|
||||
PACKAGE_${var} "${${var}}")
|
||||
else()
|
||||
set(PACKAGE_${var} "\${PACKAGE_PREFIX_DIR}/${${var}}")
|
||||
|
|
@ -259,7 +280,7 @@ get_filename_component(PACKAGE_PREFIX_DIR \"\${CMAKE_CURRENT_LIST_DIR}/${PACKAGE
|
|||
get_filename_component(_realCurr \"\${CMAKE_CURRENT_LIST_DIR}\" REALPATH)
|
||||
get_filename_component(_realOrig \"${absInstallDir}\" REALPATH)
|
||||
if(_realCurr STREQUAL _realOrig)
|
||||
set(PACKAGE_PREFIX_DIR \"${CMAKE_INSTALL_PREFIX}\")
|
||||
set(PACKAGE_PREFIX_DIR \"${installPrefix}\")
|
||||
endif()
|
||||
unset(_realOrig)
|
||||
unset(_realCurr)
|
||||
|
|
|
|||
|
|
@ -374,6 +374,7 @@ endif()
|
|||
|
||||
include(CMakePackageConfigHelpers)
|
||||
|
||||
# Generate a config file ready to be installed.
|
||||
set(INCLUDE_INSTALL_DIR include )
|
||||
set(SHARE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/share/" )
|
||||
set(CURRENT_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}" )
|
||||
|
|
@ -407,6 +408,43 @@ if(Relocatable_FOUND)
|
|||
message(SEND_ERROR "Relocatable_FOUND set to TRUE !")
|
||||
endif()
|
||||
|
||||
# Generate a config file for the build tree.
|
||||
set(INCLUDE_INSTALL_DIR include )
|
||||
set(SHARE_INSTALL_DIR "${CMAKE_CURRENT_BINARY_DIR}/share/" )
|
||||
set(CURRENT_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}" )
|
||||
|
||||
configure_package_config_file(RelocatableConfig.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/RelocatableConfig.cmake"
|
||||
INSTALL_DESTINATION "${CMAKE_CURRENT_BINARY_DIR}"
|
||||
PATH_VARS INCLUDE_INSTALL_DIR SHARE_INSTALL_DIR CURRENT_BUILD_DIR
|
||||
INSTALL_PREFIX "${CMAKE_CURRENT_BINARY_DIR}"
|
||||
)
|
||||
|
||||
set(Relocatable_FIND_COMPONENTS AComp BComp CComp)
|
||||
set(Relocatable_FIND_REQUIRED_BComp 1)
|
||||
include("${CMAKE_CURRENT_BINARY_DIR}/RelocatableConfig.cmake")
|
||||
|
||||
if(NOT "${RELOC_INCLUDE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}/include")
|
||||
message(SEND_ERROR "RELOC_INCLUDE_DIR set by configure_package_config_file() is set to \"${RELOC_INCLUDE_DIR}\" (expected \"${CMAKE_CURRENT_BINARY_DIR}/include\")")
|
||||
endif()
|
||||
|
||||
if(NOT "${RELOC_SHARE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}/share/")
|
||||
message(SEND_ERROR "RELOC_SHARE_DIR set by configure_package_config_file() is set to \"${RELOC_SHARE_DIR}\" (expected \"${CMAKE_CURRENT_BINARY_DIR}/share/\")")
|
||||
endif()
|
||||
|
||||
if(NOT "${RELOC_BUILD_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}")
|
||||
message(SEND_ERROR "RELOC_BUILD_DIR set by configure_package_config_file() is set to \"${RELOC_BUILD_DIR}\" (expected \"${CMAKE_CURRENT_BINARY_DIR}\")")
|
||||
endif()
|
||||
|
||||
if(NOT DEFINED Relocatable_FOUND)
|
||||
message(SEND_ERROR "Relocatable_FOUND not defined !")
|
||||
endif()
|
||||
|
||||
if(Relocatable_FOUND)
|
||||
message(SEND_ERROR "Relocatable_FOUND set to TRUE !")
|
||||
endif()
|
||||
|
||||
|
||||
|
||||
#-----------------------------------------------------------------------------
|
||||
# Test write_basic_config_version_file().
|
||||
|
||||
|
|
|
|||
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Reference in New Issue