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-rw-r--r--Source/cmVariableRequiresCommand.cxx76
1 files changed, 76 insertions, 0 deletions
diff --git a/Source/cmVariableRequiresCommand.cxx b/Source/cmVariableRequiresCommand.cxx
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+++ b/Source/cmVariableRequiresCommand.cxx
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+/*============================================================================
+ 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 "cmCacheManager.h"
+
+// cmLibraryCommand
+bool cmVariableRequiresCommand
+::InitialPass(std::vector<std::string>const& args, cmExecutionStatus &)
+{
+ if(args.size() < 3 )
+ {
+ this->SetError("called with incorrect number of arguments");
+ return false;
+ }
+
+ std::string testVariable = args[0];
+ if(!this->Makefile->IsOn(testVariable.c_str()))
+ {
+ return true;
+ }
+ std::string resultVariable = args[1];
+ bool requirementsMet = true;
+ std::string notSet;
+ bool hasAdvanced = false;
+ for(unsigned int i = 2; i < args.size(); ++i)
+ {
+ if(!this->Makefile->IsOn(args[i].c_str()))
+ {
+ requirementsMet = false;
+ notSet += args[i];
+ notSet += "\n";
+ cmCacheManager::CacheIterator it =
+ this->Makefile->GetCacheManager()->GetCacheIterator(args[i].c_str());
+ if(!it.IsAtEnd() && it.GetPropertyAsBool("ADVANCED"))
+ {
+ hasAdvanced = true;
+ }
+ }
+ }
+ const char* reqVar = this->Makefile->GetDefinition(resultVariable.c_str());
+ // 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.c_str(), 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;
+}