mirror of
https://github.com/reactos/CMake.git
synced 2024-11-24 20:19:53 +00:00
408 lines
12 KiB
C++
408 lines
12 KiB
C++
/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#include "cmFindPackageCommand.h"
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#include <cmsys/RegularExpression.hxx>
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#ifdef CMAKE_BUILD_WITH_CMAKE
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#include "cmVariableWatch.h"
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#endif
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void cmFindPackageNeedBackwardsCompatibility(const std::string& variable,
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int access_type, void* )
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{
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#ifdef CMAKE_BUILD_WITH_CMAKE
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if(access_type == cmVariableWatch::UNKNOWN_VARIABLE_READ_ACCESS)
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{
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std::string message = "An attempt was made to access a variable: ";
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message += variable;
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message +=
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" that has not been defined. This variable is created by the "
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"FIND_PACKAGE command. CMake version 1.6 always converted the "
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"variable name to upper-case, but this behavior is no longer the "
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"case. To fix this you might need to set the cache value of "
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"CMAKE_BACKWARDS_COMPATIBILITY to 1.6 or less. If you are writing a "
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"CMake listfile, you should change the variable reference to use "
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"the case of the argument to FIND_PACKAGE.";
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cmSystemTools::Error(message.c_str());
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}
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#else
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(void)variable;
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(void)access_type;
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#endif
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}
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//----------------------------------------------------------------------------
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bool cmFindPackageCommand::InitialPass(std::vector<std::string> const& args)
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{
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if(args.size() < 1)
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{
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this->SetError("called with incorrect number of arguments");
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return false;
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}
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this->Name = args[0];
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bool quiet = false;
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bool required = false;
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if(args.size() > 1)
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{
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cmsys::RegularExpression version("^[0-9.]+$");
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bool haveVersion = false;
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for(unsigned int i=1; i < args.size(); ++i)
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{
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if(!haveVersion && version.find(args[i].c_str()))
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{
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haveVersion = true;
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}
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else if(args[i] == "QUIET")
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{
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quiet = true;
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}
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else if(args[i] == "REQUIRED")
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{
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required = true;
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while (++i < args.size() && args[i] != "QUIET")
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{
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std::string req_var = Name + "_FIND_REQUIRED_" + args[i];
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this->Makefile->AddDefinition(req_var.c_str(), "1");
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}
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}
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else
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{
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cmOStringStream e;
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e << "called with invalid argument \"" << args[i].c_str() << "\"";
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this->SetError(e.str().c_str());
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return false;
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}
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}
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}
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// See if there is a Find<name>.cmake module.
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bool foundModule = false;
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if(!this->FindModule(foundModule, quiet, required))
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{
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return false;
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}
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if(foundModule)
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{
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return true;
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}
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// No find module. Assume the project has a CMake config file. Use
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// a <NAME>_DIR cache variable to locate it.
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this->Variable = this->Name;
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this->Variable += "_DIR";
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this->Config = this->Name;
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this->Config += "Config.cmake";
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// Support old capitalization behavior.
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std::string upperDir = cmSystemTools::UpperCase(this->Name);
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std::string upperFound = cmSystemTools::UpperCase(this->Name);
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upperDir += "_DIR";
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upperFound += "_FOUND";
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bool needCompatibility = false;
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if(!(upperDir == this->Variable))
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{
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const char* versionValue =
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this->Makefile->GetDefinition("CMAKE_BACKWARDS_COMPATIBILITY");
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if(atof(versionValue) < 1.7)
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{
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needCompatibility = true;
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}
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}
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// Try to find the config file.
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const char* def = this->Makefile->GetDefinition(this->Variable.c_str());
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if(needCompatibility && cmSystemTools::IsOff(def))
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{
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// Use the setting of the old name of the variable to provide the
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// value of the new.
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const char* oldDef = this->Makefile->GetDefinition(upperDir.c_str());
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if(!cmSystemTools::IsOff(oldDef))
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{
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this->Makefile->AddDefinition(this->Variable.c_str(), oldDef);
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def = this->Makefile->GetDefinition(this->Variable.c_str());
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}
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}
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if(cmSystemTools::IsOff(def))
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{
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if(!this->FindConfig())
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{
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return false;
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}
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}
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// If the config file was found, load it.
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bool result = true;
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bool found = false;
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def = this->Makefile->GetDefinition(this->Variable.c_str());
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if(!cmSystemTools::IsOff(def))
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{
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std::string f = def;
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f += "/";
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f += this->Config;
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if(cmSystemTools::FileExists(f.c_str()))
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{
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if(this->ReadListFile(f.c_str()))
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{
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found = true;
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}
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else
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{
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result = false;
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}
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}
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else
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{
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cmOStringStream e;
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e << this->Variable << " is set to \"" << def << "\", which is "
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<< "not a directory containing " << this->Config;
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cmSystemTools::Error(e.str().c_str());
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if(required)
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{
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cmSystemTools::SetFatalErrorOccured();
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}
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result = true;
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}
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}
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else if(!quiet || required)
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{
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cmOStringStream e;
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e << this->Variable << " is not set. It must be set to the directory "
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<< "containing " << this->Config << " in order to use "
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<< this->Name << ".";
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cmSystemTools::Error(e.str().c_str());
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if(required)
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{
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cmSystemTools::SetFatalErrorOccured();
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}
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result = true;
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}
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// Set a variable marking whether the package was found.
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std::string foundVar = this->Name;
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foundVar += "_FOUND";
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this->Makefile->AddDefinition(foundVar.c_str(), found? "1":"0");
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if(needCompatibility)
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{
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// Listfiles will be looking for the capitalized version of the
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// name. Provide it.
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this->Makefile->AddDefinition
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(upperDir.c_str(),
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this->Makefile->GetDefinition(this->Variable.c_str()));
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this->Makefile->AddDefinition
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(upperFound.c_str(),
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this->Makefile->GetDefinition(foundVar.c_str()));
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}
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#ifdef CMAKE_BUILD_WITH_CMAKE
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if(!(upperDir == this->Variable))
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{
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if(needCompatibility)
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{
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// Listfiles may use the capitalized version of the name.
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// Remove any previously added watch.
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this->Makefile->GetVariableWatch()->RemoveWatch(
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upperDir.c_str(),
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cmFindPackageNeedBackwardsCompatibility
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);
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this->Makefile->GetVariableWatch()->RemoveWatch(
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upperFound.c_str(),
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cmFindPackageNeedBackwardsCompatibility
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);
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}
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else
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{
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// Listfiles should not be using the capitalized version of the
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// name. Add a watch to warn the user.
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this->Makefile->GetVariableWatch()->AddWatch(
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upperDir.c_str(),
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cmFindPackageNeedBackwardsCompatibility
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);
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this->Makefile->GetVariableWatch()->AddWatch(
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upperFound.c_str(),
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cmFindPackageNeedBackwardsCompatibility
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);
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}
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}
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#endif
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return result;
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}
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//----------------------------------------------------------------------------
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bool cmFindPackageCommand::FindModule(bool& found, bool quiet, bool required)
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{
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std::string module = "Find";
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module += this->Name;
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module += ".cmake";
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std::string mfile = this->Makefile->GetModulesFile(module.c_str());
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if ( mfile.size() )
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{
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if(quiet)
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{
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// Tell the module that is about to be read that it should find
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// quietly.
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std::string quietly = this->Name;
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quietly += "_FIND_QUIETLY";
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this->Makefile->AddDefinition(quietly.c_str(), "1");
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}
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if(required)
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{
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// Tell the module that is about to be read that it should report
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// a fatal error if the package is not found.
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std::string req = this->Name;
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req += "_FIND_REQUIRED";
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this->Makefile->AddDefinition(req.c_str(), "1");
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}
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// Load the module we found.
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found = true;
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return this->ReadListFile(mfile.c_str());
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}
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmFindPackageCommand::FindConfig()
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{
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std::string help = "The directory containing ";
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help += this->Config;
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help += ".";
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// Construct the list of relative paths to each prefix to be
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// searched.
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std::string rel = "/lib/";
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rel += cmSystemTools::LowerCase(this->Name);
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this->Relatives.push_back(rel);
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rel = "/lib/";
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rel += this->Name;
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this->Relatives.push_back(rel);
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// It is likely that CMake will have recently built the project.
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for(int i=1; i <= 10; ++i)
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{
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cmOStringStream r;
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r << "[HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\"
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"Settings\\StartPath;WhereBuild" << i << "]";
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std::string entry = r.str();
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cmSystemTools::ExpandRegistryValues(entry);
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cmSystemTools::ConvertToUnixSlashes(entry);
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if(cmSystemTools::FileIsDirectory(entry.c_str()))
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{
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this->Builds.push_back(entry);
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}
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}
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// The project may be installed. Use the system search path to
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// construct a list of possible install prefixes.
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std::vector<std::string> systemPath;
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cmSystemTools::GetPath(systemPath);
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for(std::vector<std::string>::iterator i = systemPath.begin();
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i != systemPath.end(); ++i)
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{
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*i += "/..";
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if(cmSystemTools::FileIsDirectory(i->c_str()))
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{
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this->Prefixes.push_back(cmSystemTools::CollapseFullPath(i->c_str()));
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}
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}
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#if !defined(WIN32) || defined(__CYGWIN__)
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this->Prefixes.push_back("/usr/local");
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this->Prefixes.push_back("/usr");
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#endif
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// Look for the project's configuration file.
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std::string init = this->SearchForConfig();
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// Store the entry in the cache so it can be set by the user.
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this->Makefile->AddCacheDefinition(this->Variable.c_str(),
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init.c_str(),
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help.c_str(),
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cmCacheManager::PATH);
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return true;
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}
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//----------------------------------------------------------------------------
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std::string cmFindPackageCommand::SearchForConfig() const
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{
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// Check the environment variable.
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std::string env;
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if(cmSystemTools::GetEnv(this->Variable.c_str(), env) && env.length() > 0)
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{
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cmSystemTools::ConvertToUnixSlashes(env);
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std::string f = env;
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f += "/";
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f += this->Config;
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if(cmSystemTools::FileExists(f.c_str()))
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{
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return env;
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}
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}
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// Search the build directories.
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for(std::vector<cmStdString>::const_iterator b = this->Builds.begin();
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b != this->Builds.end(); ++b)
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{
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std::string f = *b;
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f += "/";
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f += this->Config;
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if(cmSystemTools::FileExists(f.c_str()))
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{
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return *b;
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}
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}
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// Search paths relative to each installation prefix.
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for(std::vector<cmStdString>::const_iterator p = this->Prefixes.begin();
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p != this->Prefixes.end(); ++p)
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{
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std::string prefix = *p;
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for(std::vector<cmStdString>::const_iterator r = this->Relatives.begin();
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r != this->Relatives.end(); ++r)
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{
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std::string dir = prefix;
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dir += *r;
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std::string f = dir;
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f += "/";
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f += this->Config;
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if(cmSystemTools::FileExists(f.c_str()))
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{
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return dir;
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}
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}
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}
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return this->Variable + "-NOTFOUND";
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}
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//----------------------------------------------------------------------------
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bool cmFindPackageCommand::ReadListFile(const char* f)
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{
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if(this->Makefile->ReadListFile(this->Makefile->GetCurrentListFile(),f))
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{
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return true;
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}
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std::string e = "Error reading CMake code from \"";
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e += f;
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e += "\".";
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this->SetError(e.c_str());
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return false;
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}
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