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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef cmComputeLinkDepends_h
#define cmComputeLinkDepends_h
#include "cmStandardIncludes.h"
#include "cmTarget.h"
#include "cmGraphAdjacencyList.h"
#include <queue>
class cmComputeComponentGraph;
class cmGlobalGenerator;
class cmLocalGenerator;
class cmMakefile;
class cmTarget;
/** \class cmComputeLinkDepends
* \brief Compute link dependencies for targets.
*/
class cmComputeLinkDepends
{
public:
cmComputeLinkDepends(cmTarget* target, const char* config);
~cmComputeLinkDepends();
// Basic information about each link item.
struct LinkEntry
{
std::string Item;
cmTarget* Target;
bool IsSharedDep;
LinkEntry(): Item(), Target(0), IsSharedDep(false) {}
LinkEntry(LinkEntry const& r):
Item(r.Item), Target(r.Target), IsSharedDep(r.IsSharedDep) {}
};
typedef std::vector<LinkEntry> EntryVector;
EntryVector const& Compute();
private:
// Context information.
cmTarget* Target;
cmMakefile* Makefile;
cmLocalGenerator* LocalGenerator;
cmGlobalGenerator* GlobalGenerator;
bool DebugMode;
// Configuration information.
const char* Config;
// Output information.
EntryVector FinalLinkEntries;
typedef cmTarget::LinkLibraryVectorType LinkLibraryVectorType;
std::map<cmStdString, int>::iterator
AllocateLinkEntry(std::string const& item);
int AddLinkEntry(std::string const& item);
void AddVarLinkEntries(int depender_index, const char* value);
void AddTargetLinkEntries(int depender_index,
LinkLibraryVectorType const& libs);
void AddLinkEntries(int depender_index,
std::vector<std::string> const& libs);
// One entry for each unique item.
std::vector<LinkEntry> EntryList;
std::map<cmStdString, int> LinkEntryIndex;
// BFS of initial dependencies.
struct BFSEntry
{
int Index;
const char* LibDepends;
};
std::queue<BFSEntry> BFSQueue;
void FollowLinkEntry(BFSEntry const&);
// Shared libraries that are included only because they are
// dependencies of other shared libraries, not because they are part
// of the interface.
struct SharedDepEntry
{
std::string Item;
int DependerIndex;
};
std::queue<SharedDepEntry> SharedDepQueue;
void QueueSharedDependencies(int depender_index,
std::vector<std::string> const& deps);
void HandleSharedDependency(SharedDepEntry const& dep);
// Dependency inferral for each link item.
struct DependSet: public std::set<int> {};
struct DependSetList: public std::vector<DependSet> {};
std::vector<DependSetList*> InferredDependSets;
void InferDependencies();
// Ordering constraint graph adjacency list.
typedef cmGraphNodeList NodeList;
typedef cmGraphAdjacencyList Graph;
Graph EntryConstraintGraph;
void CleanConstraintGraph();
void DisplayConstraintGraph();
// Ordering algorithm.
void OrderLinkEntires();
std::vector<char> ComponentVisited;
void DisplayComponents(cmComputeComponentGraph const& ccg);
void VisitComponent(cmComputeComponentGraph const& ccg, unsigned int i);
void EmitComponent(NodeList const& nl);
void DisplayFinalEntries();
};
#endif
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