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e74ff7c29f
This patch is heavily inspired by Michael Wild.
The interfaces cmDepends::Write and cmDepends::WriteDependencies where
extended to allow multiple dependees (sources) per depender (object).
cmDepends::Write first collect all dependencies into a std::set before
passing it to cmDepends::WriteDependencies.
cmDependsC::WriteDependencies also first collects all explicit and
implicit dependencies into a std::set and only then writes
depend.{internal,make}. The implementation of cmDependsFortran simply
loops over all sources and proceeds as before, whereas the cmDependsJava
implementation is as trivial as before.
This is for preventing exponential growth of depend.{internal,make} in
the next commit which fixes dependency-vector erasure in
cmDepends::CheckDependencies.
Inspired-by: Michael Wild <themiwi@users.sourceforge.net>
125 lines
4.4 KiB
C++
125 lines
4.4 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#ifndef cmDepends_h
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#define cmDepends_h
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#include "cmStandardIncludes.h"
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class cmFileTimeComparison;
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class cmLocalGenerator;
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/** \class cmDepends
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* \brief Dependency scanner superclass.
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*
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* This class is responsible for maintaining a .depends.make file in
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* the build tree corresponding to an object file. Subclasses help it
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* maintain dependencies for particular languages.
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*/
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class cmDepends
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{
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public:
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/** Instances need to know the build directory name and the relative
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path from the build directory to the target file. */
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cmDepends(cmLocalGenerator* lg=0, const char* targetDir="");
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/** at what level will the compile be done from */
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void SetCompileDirectory(const char *dir) {this->CompileDirectory = dir;};
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/** Set the local generator for the directory in which we are
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scanning dependencies. This is not a full local generator; it
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has been setup to do relative path conversions for the current
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directory. */
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void SetLocalGenerator(cmLocalGenerator* lg) { this->LocalGenerator = lg; }
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/** Set the specific language to be scanned. */
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void SetLanguage(const char* lang) { this->Language = lang; }
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/** Set the target build directory. */
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void SetTargetDirectory(const char* dir) { this->TargetDirectory = dir; }
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/** should this be verbose in its output */
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void SetVerbose(bool verb) { this->Verbose = verb; }
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/** Virtual destructor to cleanup subclasses properly. */
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virtual ~cmDepends();
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/** Write dependencies for the target file. */
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bool Write(std::ostream &makeDepends, std::ostream &internalDepends);
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class DependencyVector: public std::vector<std::string> {};
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/** Check dependencies for the target file. Returns true if
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dependencies are okay and false if they must be generated. If
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they must be generated Clear has already been called to wipe out
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the old dependencies.
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Dependencies which are still valid will be stored in validDeps. */
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bool Check(const char *makeFile, const char* internalFile,
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std::map<std::string, DependencyVector>& validDeps);
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/** Clear dependencies for the target file so they will be regenerated. */
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void Clear(const char *file);
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/** Set the file comparison object */
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void SetFileComparison(cmFileTimeComparison* fc) {
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this->FileComparison = fc; }
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protected:
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// Write dependencies for the target file to the given stream.
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// Return true for success and false for failure.
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virtual bool WriteDependencies(const std::set<std::string>& sources,
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const std::string& obj,
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std::ostream& makeDepends,
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std::ostream& internalDepends);
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// Check dependencies for the target file in the given stream.
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// Return false if dependencies must be regenerated and true
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// otherwise.
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virtual bool CheckDependencies(std::istream& internalDepends,
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const char* internalDependsFileName,
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std::map<std::string, DependencyVector>& validDeps);
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// Finalize the dependency information for the target.
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virtual bool Finalize(std::ostream& makeDepends,
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std::ostream& internalDepends);
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// The directory in which the build rule for the target file is executed.
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std::string CompileDirectory;
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// The local generator.
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cmLocalGenerator* LocalGenerator;
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// Flag for verbose output.
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bool Verbose;
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cmFileTimeComparison* FileComparison;
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std::string Language;
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// The full path to the target's build directory.
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std::string TargetDirectory;
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size_t MaxPath;
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char* Dependee;
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char* Depender;
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// The include file search path.
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std::vector<std::string> IncludePath;
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void SetIncludePathFromLanguage(const char* lang);
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private:
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cmDepends(cmDepends const&); // Purposely not implemented.
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void operator=(cmDepends const&); // Purposely not implemented.
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};
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#endif
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