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add_library/add_executable: allow local alias to imported targets

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Fixes: #20641
This commit is contained in:
Marc Chevrier
2020-05-28 13:51:22 +02:00
parent 254f2b9058
commit 056489d567
27 changed files with 310 additions and 65 deletions
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9
Help/command/add_executable.rst
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@@ -83,8 +83,13 @@ Alias Executables
Creates an :ref:`Alias Target <Alias Targets>`, such that ``<name>`` can
be used to refer to ``<target>`` in subsequent commands. The ``<name>``
does not appear in the generated buildsystem as a make target. The
``<target>`` may not be a non-``GLOBAL``
:ref:`Imported Target <Imported Targets>` or an ``ALIAS``.
``<target>`` may not be an ``ALIAS``.
An ``ALIAS`` to a non-``GLOBAL`` :ref:`Imported Target <Imported Targets>`
has scope in the directory in which the alias is created and below.
The :prop_tgt:`ALIAS_GLOBAL` target property can be used to check if the
alias is global or not.
``ALIAS`` targets can be used as targets to read properties
from, executables for custom commands and custom targets. They can also be
tested for existence with the regular :command:`if(TARGET)` subcommand.