58 строки
2.1 KiB
C++
58 строки
2.1 KiB
C++
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/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmOptionCommand.h"
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// cmOptionCommand
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bool cmOptionCommand::InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus&)
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{
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bool argError = false;
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if (args.size() < 2) {
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argError = true;
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}
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// for VTK 4.0 we have to support the option command with more than 3
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// arguments if CMAKE_MINIMUM_REQUIRED_VERSION is not defined, if
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// CMAKE_MINIMUM_REQUIRED_VERSION is defined, then we can have stricter
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// checking.
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if (this->Makefile->GetDefinition("CMAKE_MINIMUM_REQUIRED_VERSION")) {
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if (args.size() > 3) {
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argError = true;
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}
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}
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if (argError) {
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std::string m = "called with incorrect number of arguments: ";
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m += cmJoin(args, " ");
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this->SetError(m);
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return false;
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}
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std::string initialValue = "Off";
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// Now check and see if the value has been stored in the cache
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// already, if so use that value and don't look for the program
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cmState* state = this->Makefile->GetState();
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const char* existingValue = state->GetCacheEntryValue(args[0]);
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if (existingValue) {
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if (state->GetCacheEntryType(args[0]) != cmState::UNINITIALIZED) {
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state->SetCacheEntryProperty(args[0], "HELPSTRING", args[1]);
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return true;
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}
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initialValue = existingValue;
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}
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if (args.size() == 3) {
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initialValue = args[2];
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}
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bool init = cmSystemTools::IsOn(initialValue.c_str());
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this->Makefile->AddCacheDefinition(args[0], init ? "ON" : "OFF",
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args[1].c_str(), cmState::BOOL);
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return true;
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}
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