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Diffstat (limited to 'Source/cmComputeTargetDepends.h')
-rw-r--r-- | Source/cmComputeTargetDepends.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/Source/cmComputeTargetDepends.h b/Source/cmComputeTargetDepends.h new file mode 100644 index 0000000..67bce72 --- /dev/null +++ b/Source/cmComputeTargetDepends.h @@ -0,0 +1,82 @@ +/*============================================================================ + 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. +============================================================================*/ +#ifndef cmComputeTargetDepends_h +#define cmComputeTargetDepends_h + +#include "cmStandardIncludes.h" + +#include "cmGraphAdjacencyList.h" + +#include <stack> + +class cmComputeComponentGraph; +class cmGlobalGenerator; +class cmTarget; +class cmTargetDependSet; + +/** \class cmComputeTargetDepends + * \brief Compute global interdependencies among targets. + * + * Static libraries may form cycles in the target dependency graph. + * This class evaluates target dependencies globally and adjusts them + * to remove cycles while preserving a safe build order. + */ +class cmComputeTargetDepends +{ +public: + cmComputeTargetDepends(cmGlobalGenerator* gg); + ~cmComputeTargetDepends(); + + bool Compute(); + + std::vector<cmTarget*> const& GetTargets() const { return this->Targets; } + void GetTargetDirectDepends(cmTarget* t, cmTargetDependSet& deps); +private: + void CollectTargets(); + void CollectDepends(); + void CollectTargetDepends(int depender_index); + void AddTargetDepend(int depender_index, const char* dependee_name, + bool linking); + void AddTargetDepend(int depender_index, cmTarget* dependee, bool linking); + bool ComputeFinalDepends(cmComputeComponentGraph const& ccg); + + cmGlobalGenerator* GlobalGenerator; + bool DebugMode; + bool NoCycles; + + // Collect all targets. + std::vector<cmTarget*> Targets; + std::map<cmTarget*, int> TargetIndex; + + // Represent the target dependency graph. The entry at each + // top-level index corresponds to a depender whose dependencies are + // listed. + typedef cmGraphNodeList NodeList; + typedef cmGraphEdgeList EdgeList; + typedef cmGraphAdjacencyList Graph; + Graph InitialGraph; + Graph FinalGraph; + void DisplayGraph(Graph const& graph, const char* name); + + // Deal with connected components. + void DisplayComponents(cmComputeComponentGraph const& ccg); + bool CheckComponents(cmComputeComponentGraph const& ccg); + void ComplainAboutBadComponent(cmComputeComponentGraph const& ccg, int c, + bool strong = false); + + std::vector<int> ComponentHead; + std::vector<int> ComponentTail; + bool IntraComponent(std::vector<int> const& cmap, int c, int i, int* head, + std::set<int>& emitted, std::set<int>& visited); +}; + +#endif |