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Merge topic 'doc-link-compile-options'
2eba7d7524
Help: Add SHELL, LINKER and host/device discussions to property docsb20c1f4880
Help: Make SHELL option examples more generic Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !6130
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@@ -1,3 +1,5 @@
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Host And Device Specific Link Options
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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.. versionadded:: 3.18
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When a device link step is involved, which is controlled by
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Handling Compiler Driver Differences
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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To pass options to the linker tool, each compiler driver has its own syntax.
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The ``LINKER:`` prefix and ``,`` separator can be used to specify, in a portable
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way, options to pass to the linker tool. ``LINKER:`` is replaced by the
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@@ -1,11 +1,15 @@
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The final set of compile or link options used for a target is constructed by
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Option De-duplication
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^^^^^^^^^^^^^^^^^^^^^
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The final set of options used for a target is constructed by
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accumulating options from the current target and the usage requirements of
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its dependencies. The set of options is de-duplicated to avoid repetition.
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.. versionadded:: 3.12
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While beneficial for individual options, the de-duplication step can break
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up option groups. For example, ``-D A -D B`` becomes ``-D A B``. One may
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specify a group of options using shell-like quoting along with a ``SHELL:``
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prefix. The ``SHELL:`` prefix is dropped, and the rest of the option string
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is parsed using the :command:`separate_arguments` ``UNIX_COMMAND`` mode.
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For example, ``"SHELL:-D A" "SHELL:-D B"`` becomes ``-D A -D B``.
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up option groups. For example, ``-option A -option B`` becomes
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``-option A B``. One may specify a group of options using shell-like
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quoting along with a ``SHELL:`` prefix. The ``SHELL:`` prefix is dropped,
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and the rest of the option string is parsed using the
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:command:`separate_arguments` ``UNIX_COMMAND`` mode. For example,
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``"SHELL:-option A" "SHELL:-option B"`` becomes ``-option A -option B``.
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@@ -15,3 +15,5 @@ Contents of ``COMPILE_OPTIONS`` may use "generator expressions" with the
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syntax ``$<...>``. See the :manual:`cmake-generator-expressions(7)` manual
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for available expressions. See the :manual:`cmake-buildsystem(7)` manual
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for more on defining buildsystem properties.
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.. include:: ../command/OPTIONS_SHELL.txt
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@@ -28,3 +28,9 @@ for more on defining buildsystem properties.
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.. note::
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This property must be used in preference to :prop_tgt:`LINK_FLAGS` property.
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.. include:: ../command/DEVICE_LINK_OPTIONS.txt
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.. include:: ../command/OPTIONS_SHELL.txt
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.. include:: ../command/LINK_OPTIONS_LINKER.txt
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@@ -20,3 +20,5 @@ for more on defining buildsystem properties.
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This property must be used in preference to :prop_tgt:`STATIC_LIBRARY_FLAGS`
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property.
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.. include:: ../command/OPTIONS_SHELL.txt
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