diff options
Diffstat (limited to 'Source/cmVariableRequiresCommand.cxx')
-rw-r--r-- | Source/cmVariableRequiresCommand.cxx | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/Source/cmVariableRequiresCommand.cxx b/Source/cmVariableRequiresCommand.cxx new file mode 100644 index 0000000..8d55b0e --- /dev/null +++ b/Source/cmVariableRequiresCommand.cxx @@ -0,0 +1,74 @@ +/*============================================================================ + 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; +} |