Find all source files in a directory.
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.
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