CMake/Source/cmAuxSourceDirectoryCommand.h
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2012-08-13 14:18:39 -04:00

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmAuxSourceDirectoryCommand_h
#define cmAuxSourceDirectoryCommand_h
#include "cmCommand.h"
/** \class cmAuxSourceDirectoryCommand
* \brief Specify auxiliary source code directories.
*
* cmAuxSourceDirectoryCommand specifies source code directories
* that must be built as part of this build process. This directories
* are not recursively processed like the SUBDIR command (cmSubdirCommand).
* A side effect of this command is to create a subdirectory in the build
* directory structure.
*/
class cmAuxSourceDirectoryCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmAuxSourceDirectoryCommand;
}
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InitialPass(std::vector<std::string> const& args,
cmExecutionStatus &status);
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() const { return "aux_source_directory";}
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation() const
{
return "Find all source files in a directory.";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation() const
{
return
" aux_source_directory(<dir> <variable>)\n"
"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.\n"
"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.";
}
cmTypeMacro(cmAuxSourceDirectoryCommand, cmCommand);
};
#endif