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CMake/Help/command/aux_source_directory.rst
Joachim Wuttke (o) adbaadf0ee Help: Apply syntax highlighting to project commands
* Replace most "::" by ".. code-block:: cmake"
  * Header sentence in imperative voice,
    detailed command description in present tense.
2018-10-25 13:47:31 +02:00

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aux_source_directory
--------------------
Find all source files in a directory.
.. code-block:: cmake
aux_source_directory(<dir> <variable>)
Collects the names of all the source files in the specified directory
and stores the list in the ``<variable>`` provided. This command is
intended to be used by projects that use explicit template
instantiation. Template instantiation files can be stored in a
"Templates" subdirectory and collected automatically using this
command to avoid manually listing all instantiations.
It is tempting to use this command to avoid writing the list of source
files for a library or executable target. While this seems to work,
there is no way for CMake to generate a build system that knows when a
new source file has been added. Normally the generated build system
knows when it needs to rerun CMake because the CMakeLists.txt file is
modified to add a new source. When the source is just added to the
directory without modifying this file, one would have to manually
rerun CMake to generate a build system incorporating the new file.