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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef cmFindPackageCommand_h
#define cmFindPackageCommand_h
#include "cmCommand.h"
/** \class cmFindPackageCommand
* \brief Load settings from an external project.
*
* cmFindPackageCommand
*/
class cmFindPackageCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmFindPackageCommand;
}
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InitialPass(std::vector<std::string> const& args);
/**
* This determines if the command is invoked when in script mode.
*/
virtual bool IsScriptable() { return true; }
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() { return "FIND_PACKAGE";}
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation()
{
return "Load settings for an external project.";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation()
{
return
" FIND_PACKAGE(<name> [major.minor] [QUIET] [NO_MODULE]\n"
" [[REQUIRED|COMPONENTS] [componets...]])\n"
"Finds and loads settings from an external project. <name>_FOUND will "
"be set to indicate whether the package was found. Settings that "
"can be used when <name>_FOUND is true are package-specific. The "
"package is found through several steps. "
"Directories listed in CMAKE_MODULE_PATH are searched for files called "
"\"Find<name>.cmake\". If such a file is found, it is read and "
"processed by CMake, and is responsible for finding the package. "
"This first step may be skipped by using the NO_MODULE option. "
"If no such file is found, it is expected that the package is another "
"project built by CMake that has a \"<name>Config.cmake\" file. "
"A cache entry called <name>_DIR is created and is expected to be set "
"to the directory containing this file. If the file is found, it is "
"read and processed by CMake to load the settings of the package. If "
"<name>_DIR has not been set during a configure step, the command "
"will generate an error describing the problem unless the QUIET "
"argument is specified. If <name>_DIR has been set to a directory "
"not containing a \"<name>Config.cmake\" file, an error is always "
"generated. If REQUIRED is specified and the package is not found, "
"a FATAL_ERROR is generated and the configure step stops executing. "
"A package-specific list of components may be listed after the "
"REQUIRED option, or after the COMPONENTS option if no REQUIRED "
"option is given.";
}
cmTypeMacro(cmFindPackageCommand, cmCommand);
private:
bool FindModule(bool& found, bool quiet, bool required);
bool FindConfig();
std::string SearchForConfig() const;
bool ReadListFile(const char* f);
cmStdString Name;
cmStdString Variable;
cmStdString Config;
std::vector<cmStdString> Builds;
std::vector<cmStdString> Prefixes;
std::vector<cmStdString> Relatives;
};
#endif
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