| /*============================================================================ |
| CMake - Cross Platform Makefile Generator |
| Copyright 2000-2009 Kitware, Inc., Insight Software Consortium |
| |
| Distributed under the OSI-approved BSD License (the "License"); |
| see accompanying file Copyright.txt for details. |
| |
| This software is distributed WITHOUT ANY WARRANTY; without even the |
| implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| See the License for more information. |
| ============================================================================*/ |
| #include "cmVariableRequiresCommand.h" |
| |
| #include "cmState.h" |
| |
| // cmLibraryCommand |
| bool cmVariableRequiresCommand::InitialPass( |
| std::vector<std::string> const& args, cmExecutionStatus&) |
| { |
| if (this->Disallowed( |
| cmPolicies::CMP0035, |
| "The variable_requires command should not be called; see CMP0035.")) { |
| return true; |
| } |
| if (args.size() < 3) { |
| this->SetError("called with incorrect number of arguments"); |
| return false; |
| } |
| |
| std::string testVariable = args[0]; |
| if (!this->Makefile->IsOn(testVariable)) { |
| return true; |
| } |
| std::string resultVariable = args[1]; |
| bool requirementsMet = true; |
| std::string notSet; |
| bool hasAdvanced = false; |
| cmState* state = this->Makefile->GetState(); |
| for (unsigned int i = 2; i < args.size(); ++i) { |
| if (!this->Makefile->IsOn(args[i])) { |
| requirementsMet = false; |
| notSet += args[i]; |
| notSet += "\n"; |
| if (state->GetCacheEntryValue(args[i]) && |
| state->GetCacheEntryPropertyAsBool(args[i], "ADVANCED")) { |
| hasAdvanced = true; |
| } |
| } |
| } |
| const char* reqVar = this->Makefile->GetDefinition(resultVariable); |
| // if reqVar is unset, then set it to requirementsMet |
| // if reqVar is set to true, but requirementsMet is false , then |
| // set reqVar to false. |
| if (!reqVar || (!requirementsMet && this->Makefile->IsOn(reqVar))) { |
| this->Makefile->AddDefinition(resultVariable, requirementsMet); |
| } |
| |
| if (!requirementsMet) { |
| std::string message = "Variable assertion failed:\n"; |
| message += |
| testVariable + " Requires that the following unset variables are set:\n"; |
| message += notSet; |
| message += "\nPlease set them, or set "; |
| message += testVariable + " to false, and re-configure.\n"; |
| if (hasAdvanced) { |
| message += |
| "One or more of the required variables is advanced." |
| " To set the variable, you must turn on advanced mode in cmake."; |
| } |
| cmSystemTools::Error(message.c_str()); |
| } |
| |
| return true; |
| } |