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c332e0bf3c
Isolation of policy changes inside scripts is important for protecting the including context. This teaches include() and find_package() to imply a cmake_policy(PUSH) and cmake_policy(POP) around the scripts they load, with a NO_POLICY_SCOPE option to disable the behavior. This also creates CMake Policy CMP0011 to provide compatibility. See issue #8192.
115 lines
3.2 KiB
C++
115 lines
3.2 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 "cmIncludeCommand.h"
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// cmIncludeCommand
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bool cmIncludeCommand
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::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
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{
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if (args.size()< 1 || args.size() > 4)
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{
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this->SetError("called with wrong number of arguments. "
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"Include only takes one file.");
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return false;
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}
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bool optional = false;
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bool noPolicyScope = false;
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std::string fname = args[0];
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std::string resultVarName;
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for (unsigned int i=1; i<args.size(); i++)
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{
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if (args[i] == "OPTIONAL")
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{
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if (optional)
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{
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this->SetError("called with invalid arguments: OPTIONAL used twice");
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return false;
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}
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optional = true;
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}
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else if(args[i] == "RESULT_VARIABLE")
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{
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if (resultVarName.size() > 0)
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{
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this->SetError("called with invalid arguments: "
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"only one result variable allowed");
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return false;
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}
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if(++i < args.size())
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{
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resultVarName = args[i];
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}
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else
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{
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this->SetError("called with no value for RESULT_VARIABLE.");
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return false;
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}
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}
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else if(args[i] == "NO_POLICY_SCOPE")
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{
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noPolicyScope = true;
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}
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else if(i > 1) // compat.: in previous cmake versions the second
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// parameter was ignore if it wasn't "OPTIONAL"
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{
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std::string errorText = "called with invalid argument: ";
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errorText += args[i];
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this->SetError(errorText.c_str());
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return false;
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}
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}
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if(!cmSystemTools::FileIsFullPath(fname.c_str()))
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{
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// Not a path. Maybe module.
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std::string module = fname;
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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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fname = mfile.c_str();
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}
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}
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std::string fullFilePath;
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bool readit =
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this->Makefile->ReadListFile( this->Makefile->GetCurrentListFile(),
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fname.c_str(), &fullFilePath,
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noPolicyScope);
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// add the location of the included file if a result variable was given
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if (resultVarName.size())
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{
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this->Makefile->AddDefinition(resultVarName.c_str(),
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readit?fullFilePath.c_str():"NOTFOUND");
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}
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if(!optional && !readit && !cmSystemTools::GetFatalErrorOccured())
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{
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std::string m =
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"could not find load file:\n"
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" ";
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m += fname;
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this->SetError(m.c_str());
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return false;
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}
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return true;
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}
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