8046390f1e
"Unspecified" component -> if no components are used at all, no change in behaviour, if components are used completely, no change in behaviour, since this default will be overridden everywhere, if components where used partly, it is now possible to install only the unspecified items (e.g. everything which wasn't marked as "Development") Alex Alex
383 lines
12 KiB
C++
383 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 "cmTryRunCommand.h"
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#include "cmCacheManager.h"
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#include "cmTryCompileCommand.h"
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// cmTryRunCommand
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bool cmTryRunCommand::InitialPass(std::vector<std::string> const& argv)
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{
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if(argv.size() < 4)
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{
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return false;
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}
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// build an arg list for TryCompile and extract the runArgs
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std::vector<std::string> tryCompile;
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this->CompileResultVariable = "";
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this->RunResultVariable = "";
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this->OutputVariable = "";
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this->RunOutputVariable = "";
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this->CompileOutputVariable = "";
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std::string runArgs;
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unsigned int i;
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for (i = 1; i < argv.size(); ++i)
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{
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if (argv[i] == "ARGS")
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{
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++i;
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while (i < argv.size() && argv[i] != "COMPILE_DEFINITIONS" &&
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argv[i] != "CMAKE_FLAGS")
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{
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runArgs += " ";
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runArgs += argv[i];
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++i;
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}
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if (i < argv.size())
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{
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tryCompile.push_back(argv[i]);
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}
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}
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else
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{
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if (argv[i] == "OUTPUT_VARIABLE")
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{
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if ( argv.size() <= (i+1) )
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{
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cmSystemTools::Error(
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"OUTPUT_VARIABLE specified but there is no variable");
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return false;
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}
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i++;
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this->OutputVariable = argv[i];
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}
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else if (argv[i] == "RUN_OUTPUT_VARIABLE")
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{
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if (argv.size() <= (i + 1))
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{
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cmSystemTools::Error(
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"RUN_OUTPUT_VARIABLE specified but there is no variable");
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return false;
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}
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i++;
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this->RunOutputVariable = argv[i];
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}
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else if (argv[i] == "COMPILE_OUTPUT_VARIABLE")
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{
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if (argv.size() <= (i + 1))
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{
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cmSystemTools::Error(
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"COMPILE_OUTPUT_VARIABLE specified but there is no variable");
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return false;
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}
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i++;
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this->CompileOutputVariable = argv[i];
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}
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else
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{
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tryCompile.push_back(argv[i]);
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}
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}
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}
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// although they could be used together, don't allow it, because
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// using OUTPUT_VARIABLE makes crosscompiling harder
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if (this->OutputVariable.size()
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&& ((this->RunOutputVariable.size())
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|| (this->CompileOutputVariable.size())))
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{
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cmSystemTools::Error(
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"You cannot use OUTPUT_VARIABLE together with COMPILE_OUTPUT_VARIABLE "
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"or RUN_OUTPUT_VARIABLE. Please use only COMPILE_OUTPUT_VARIABLE and/or "
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"RUN_OUTPUT_VARIABLE.");
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return false;
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}
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bool captureRunOutput = false;
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if (this->OutputVariable.size())
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{
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captureRunOutput = true;
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tryCompile.push_back("OUTPUT_VARIABLE");
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tryCompile.push_back(this->OutputVariable);
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}
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if (this->CompileOutputVariable.size())
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{
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tryCompile.push_back("OUTPUT_VARIABLE");
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tryCompile.push_back(this->CompileOutputVariable);
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}
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if (this->RunOutputVariable.size())
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{
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captureRunOutput = true;
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}
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this->RunResultVariable = argv[0];
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this->CompileResultVariable = argv[1];
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// do the try compile
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int res = this->TryCompileCode(tryCompile);
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// now try running the command if it compiled
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if (!res)
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{
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if (this->OutputFile.size() == 0)
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{
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cmSystemTools::Error(this->FindErrorMessage.c_str());
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}
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else
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{
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// "run" it and capture the output
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std::string runOutputContents;
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if (this->Makefile->IsOn("CMAKE_CROSSCOMPILING"))
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{
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this->DoNotRunExecutable(runArgs,
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argv[3],
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captureRunOutput ? &runOutputContents : 0);
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}
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else
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{
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this->RunExecutable(runArgs, &runOutputContents);
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}
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// now put the output into the variables
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if(this->RunOutputVariable.size())
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{
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this->Makefile->AddDefinition(this->RunOutputVariable.c_str(),
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runOutputContents.c_str());
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}
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if(this->OutputVariable.size())
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{
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// if the TryCompileCore saved output in this outputVariable then
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// prepend that output to this output
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const char* compileOutput
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= this->Makefile->GetDefinition(this->OutputVariable.c_str());
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if (compileOutput)
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{
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runOutputContents = std::string(compileOutput) + runOutputContents;
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}
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this->Makefile->AddDefinition(this->OutputVariable.c_str(),
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runOutputContents.c_str());
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}
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}
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}
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// if we created a directory etc, then cleanup after ourselves
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if(!this->Makefile->GetCMakeInstance()->GetDebugTryCompile())
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{
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this->CleanupFiles(this->BinaryDirectory.c_str());
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}
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return true;
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}
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void cmTryRunCommand::RunExecutable(const std::string& runArgs,
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std::string* out)
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{
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int retVal = -1;
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std::string finalCommand = cmSystemTools::ConvertToRunCommandPath(
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this->OutputFile.c_str());
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if (runArgs.size())
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{
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finalCommand += runArgs;
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}
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int timeout = 0;
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bool worked = cmSystemTools::RunSingleCommand(finalCommand.c_str(),
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out, &retVal,
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0, false, timeout);
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// set the run var
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char retChar[1000];
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if (worked)
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{
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sprintf(retChar, "%i", retVal);
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}
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else
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{
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strcpy(retChar, "FAILED_TO_RUN");
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}
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this->Makefile->AddCacheDefinition(this->RunResultVariable.c_str(), retChar,
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"Result of TRY_RUN",
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cmCacheManager::INTERNAL);
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}
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/* This is only used when cross compiling. Instead of running the
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executable, two cache variables are created which will hold the results
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the executable would have produced.
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*/
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void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
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const std::string& srcFile,
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std::string* out
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)
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{
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// copy the executable out of the CMakeFiles/ directory, so it is not
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// removed at the end of TRY_RUN and the user can run it manually
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// on the target platform.
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std::string copyDest = this->Makefile->GetHomeOutputDirectory();
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copyDest += "/";
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copyDest += cmSystemTools::GetFilenameWithoutExtension(
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this->OutputFile.c_str());
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copyDest += "-";
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copyDest += this->RunResultVariable;
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copyDest += cmSystemTools::GetFilenameExtension(this->OutputFile.c_str());
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cmSystemTools::CopyFileAlways(this->OutputFile.c_str(), copyDest.c_str());
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std::string resultFileName = this->Makefile->GetHomeOutputDirectory();
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resultFileName += "/TryRunResults.cmake";
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std::string detailsString = "For details see ";
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detailsString += resultFileName;
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std::string internalRunOutputName=this->RunResultVariable+"__TRYRUN_OUTPUT";
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bool error = false;
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if (this->Makefile->GetDefinition(this->RunResultVariable.c_str()) == 0)
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{
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// if the variables doesn't exist, create it with a helpful error text
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// and mark it as advanced
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std::string comment;
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comment += "Run result of TRY_RUN(), indicates whether the executable "
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"would have been able to run on its target platform.\n";
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comment += detailsString;
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this->Makefile->AddCacheDefinition(this->RunResultVariable.c_str(),
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"PLEASE_FILL_OUT-FAILED_TO_RUN",
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comment.c_str(),
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cmCacheManager::STRING);
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cmCacheManager::CacheIterator it = this->Makefile->GetCacheManager()->
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GetCacheIterator(this->RunResultVariable.c_str());
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if ( !it.IsAtEnd() )
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{
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it.SetProperty("ADVANCED", "1");
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}
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error = true;
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}
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// is the output from the executable used ?
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if (out!=0)
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{
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if (this->Makefile->GetDefinition(internalRunOutputName.c_str()) == 0)
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{
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// if the variables doesn't exist, create it with a helpful error text
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// and mark it as advanced
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std::string comment;
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comment+="Output of TRY_RUN(), contains the text, which the executable "
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"would have printed on stdout and stderr on its target platform.\n";
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comment += detailsString;
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this->Makefile->AddCacheDefinition(internalRunOutputName.c_str(),
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"PLEASE_FILL_OUT-NOTFOUND",
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comment.c_str(),
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cmCacheManager::STRING);
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cmCacheManager::CacheIterator it = this->Makefile->GetCacheManager()->
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GetCacheIterator(internalRunOutputName.c_str());
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if ( !it.IsAtEnd() )
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{
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it.SetProperty("ADVANCED", "1");
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}
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error = true;
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}
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}
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if (error)
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{
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static bool firstTryRun = true;
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std::ofstream file(resultFileName.c_str(),
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firstTryRun ? std::ios::out : std::ios::app);
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if ( file )
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{
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if (firstTryRun)
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{
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file << "# This file was generated by CMake because it detected "
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"TRY_RUN() commands\n"
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"# in crosscompiling mode. It will be overwritten by the next "
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"CMake run.\n"
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"# Copy it to a safe location, set the variables to "
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"appropriate values\n"
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"# and use it then to preset the CMake cache (using -C).\n\n";
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}
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std::string comment ="\n";
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comment += this->RunResultVariable;
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comment += "\n indicates whether the executable would have been able "
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"to run on its\n"
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" target platform. If so, set ";
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comment += this->RunResultVariable;
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comment += " to\n"
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" the exit code (in many cases 0 for success), otherwise "
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"enter \"FAILED_TO_RUN\".\n";
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if (out!=0)
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{
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comment += internalRunOutputName;
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comment += "\n contains the text the executable "
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"would have printed on stdout and stderr.\n"
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" If the executable would not have been able to run, set ";
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comment += internalRunOutputName;
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comment += " empty.\n"
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" Otherwise check if the output is evaluated by the "
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"calling CMake code. If so,\n"
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" check what the source file would have printed when "
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"called with the given arguments.\n";
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}
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comment += "The ";
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comment += this->CompileResultVariable;
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comment += " variable holds the build result for this TRY_RUN().\n\n"
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"Source file : ";
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comment += srcFile + "\n";
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comment += "Executable : ";
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comment += copyDest + "\n";
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comment += "Run arguments : ";
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comment += runArgs;
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comment += "\n";
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comment += " Called from: " + this->Makefile->GetListFileStack();
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cmsys::SystemTools::ReplaceString(comment, "\n", "\n# ");
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file << comment << "\n\n";
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file << "SET( " << this->RunResultVariable << " \n \""
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<< this->Makefile->GetDefinition(this->RunResultVariable.c_str())
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<< "\"\n CACHE STRING \"Result from TRY_RUN\" FORCE)\n\n";
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if (out!=0)
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{
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file << "SET( " << internalRunOutputName << " \n \""
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<< this->Makefile->GetDefinition(internalRunOutputName.c_str())
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<< "\"\n CACHE STRING \"Output from TRY_RUN\" FORCE)\n\n";
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}
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file.close();
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}
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firstTryRun = false;
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std::string errorMessage = "TRY_RUN() invoked in cross-compiling mode, "
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"please set the following cache variables "
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"appropriatly:\n";
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errorMessage += " " + this->RunResultVariable + " (advanced)\n";
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if (out!=0)
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{
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errorMessage += " " + internalRunOutputName + " (advanced)\n";
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}
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errorMessage += detailsString;
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cmSystemTools::Error(errorMessage.c_str());
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return;
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}
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if (out!=0)
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{
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(*out) = this->Makefile->GetDefinition(internalRunOutputName.c_str());
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}
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}
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