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40 lines
1.4 KiB
ReStructuredText
40 lines
1.4 KiB
ReStructuredText
CMAKE_PROJECT_COMPAT_VERSION
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----------------------------
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.. note::
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Experimental. Gated by ``CMAKE_EXPERIMENTAL_EXPORT_PACKAGE_INFO``.
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The compatibility version of the top level project.
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This variable holds the compatibility version of the project as specified in the
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top level CMakeLists.txt file by a :command:`project` command. In the event
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that the top level CMakeLists.txt contains multiple :command:`project` calls,
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the most recently called one from that top level CMakeLists.txt will determine
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the value that ``CMAKE_PROJECT_COMPAT_VERSION`` contains. For example, consider
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the following top level CMakeLists.txt:
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.. code-block:: cmake
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cmake_minimum_required(VERSION 4.1)
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project(First VERSION 9.0 COMPAT_VERSION 1.2.3)
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project(Second VERSION 9.0 COMPAT_VERSION 3.4.5)
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add_subdirectory(sub)
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project(Third VERSION 9.0 COMPAT_VERSION 6.7.8)
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And ``sub/CMakeLists.txt`` with the following contents:
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.. code-block:: cmake
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project(SubProj VERSION 2.0 COMPAT_VERSION 1.0)
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message("CMAKE_PROJECT_VERSION = ${CMAKE_PROJECT_VERSION}")
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The most recently seen :command:`project` command from the top level
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CMakeLists.txt would be ``project(Second ...)``, so this will print::
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CMAKE_PROJECT_COMPAT_VERSION = 3.4.5
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To obtain the version from the most recent call to :command:`project` in
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the current directory scope or above, see the :variable:`PROJECT_COMPAT_VERSION`
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variable.
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