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When converting custom commands for the ninja build system we need to make sure that any file dependencies that exist in the build tree are converted to phony targets. This tells ninja that these files might not exist when starting the build, but could be generated during the build. This is done by tracking all dependencies for custom command targets. After all have been written out we remove all items from the set that have been seen as a target, custom command output, an alias, or a file in the source directory. Anything that is left is considered to be a file that will be generated as a side effect of another custom command.
381 lines
14 KiB
C++
381 lines
14 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2011 Peter Collingbourne <peter@pcc.me.uk>
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Copyright 2011 Nicolas Despres <nicolas.despres@gmail.com>
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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 cmGlobalNinjaGenerator_h
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# define cmGlobalNinjaGenerator_h
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# include "cmGlobalGenerator.h"
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# include "cmGlobalGeneratorFactory.h"
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# include "cmNinjaTypes.h"
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//#define NINJA_GEN_VERBOSE_FILES
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class cmLocalGenerator;
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class cmGeneratedFileStream;
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class cmGeneratorTarget;
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/**
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* \class cmGlobalNinjaGenerator
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* \brief Write a build.ninja file.
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*
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* The main differences between this generator and the UnixMakefile
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* generator family are:
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* - We don't care about VERBOSE variable or RULE_MESSAGES property since
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* it is handle by Ninja's -v option.
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* - We don't care about computing any progress status since Ninja manages
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* it itself.
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* - We don't care about generating a clean target since Ninja already have
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* a clean tool.
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* - We generate one build.ninja and one rules.ninja per project.
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* - We try to minimize the number of generated rules: one per target and
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* language.
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* - We use Ninja special variable $in and $out to produce nice output.
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* - We extensively use Ninja variable overloading system to minimize the
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* number of generated rules.
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*/
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class cmGlobalNinjaGenerator : public cmGlobalGenerator
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{
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public:
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/// The default name of Ninja's build file. Typically: build.ninja.
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static const char* NINJA_BUILD_FILE;
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/// The default name of Ninja's rules file. Typically: rules.ninja.
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/// It is included in the main build.ninja file.
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static const char* NINJA_RULES_FILE;
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/// The indentation string used when generating Ninja's build file.
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static const char* INDENT;
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/// Write @a count times INDENT level to output stream @a os.
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static void Indent(std::ostream& os, int count);
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/// Write a divider in the given output stream @a os.
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static void WriteDivider(std::ostream& os);
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static std::string EncodeIdent(const std::string &ident, std::ostream &vars);
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static std::string EncodeLiteral(const std::string &lit);
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static std::string EncodePath(const std::string &path);
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/**
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* Write the given @a comment to the output stream @a os. It
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* handles new line character properly.
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*/
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static void WriteComment(std::ostream& os, const std::string& comment);
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/**
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* Write a build statement to @a os with the @a comment using
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* the @a rule the list of @a outputs files and inputs.
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* It also writes the variables bound to this build statement.
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* @warning no escaping of any kind is done here.
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*/
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void WriteBuild(std::ostream& os,
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const std::string& comment,
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const std::string& rule,
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const cmNinjaDeps& outputs,
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const cmNinjaDeps& explicitDeps,
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const cmNinjaDeps& implicitDeps,
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const cmNinjaDeps& orderOnlyDeps,
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const cmNinjaVars& variables,
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const std::string& rspfile = std::string(),
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int cmdLineLimit = -1);
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/**
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* Helper to write a build statement with the special 'phony' rule.
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*/
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void WritePhonyBuild(std::ostream& os,
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const std::string& comment,
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const cmNinjaDeps& outputs,
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const cmNinjaDeps& explicitDeps,
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const cmNinjaDeps& implicitDeps = cmNinjaDeps(),
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const cmNinjaDeps& orderOnlyDeps = cmNinjaDeps(),
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const cmNinjaVars& variables = cmNinjaVars());
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void WriteCustomCommandBuild(const std::string& command,
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const std::string& description,
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const std::string& comment,
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const cmNinjaDeps& outputs,
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const cmNinjaDeps& deps = cmNinjaDeps(),
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const cmNinjaDeps& orderOnlyDeps = cmNinjaDeps());
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void WriteMacOSXContentBuild(const std::string& input,
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const std::string& output);
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/**
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* Write a rule statement named @a name to @a os with the @a comment,
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* the mandatory @a command, the @a depfile and the @a description.
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* It also writes the variables bound to this rule statement.
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* @warning no escaping of any kind is done here.
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*/
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static void WriteRule(std::ostream& os,
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const std::string& name,
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const std::string& command,
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const std::string& description,
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const std::string& comment,
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const std::string& depfile,
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const std::string& rspfile,
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const std::string& rspcontent,
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bool restat,
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bool generator);
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/**
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* Write a variable named @a name to @a os with value @a value and an
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* optional @a comment. An @a indent level can be specified.
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* @warning no escaping of any kind is done here.
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*/
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static void WriteVariable(std::ostream& os,
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const std::string& name,
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const std::string& value,
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const std::string& comment = "",
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int indent = 0);
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/**
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* Write an include statement including @a filename with an optional
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* @a comment to the @a os stream.
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*/
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static void WriteInclude(std::ostream& os,
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const std::string& filename,
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const std::string& comment = "");
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/**
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* Write a default target statement specifying @a targets as
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* the default targets.
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*/
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static void WriteDefault(std::ostream& os,
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const cmNinjaDeps& targets,
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const std::string& comment = "");
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static bool IsMinGW() { return UsingMinGW; }
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public:
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/// Default constructor.
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cmGlobalNinjaGenerator();
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/// Convenience method for creating an instance of this class.
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static cmGlobalGeneratorFactory* NewFactory() {
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return new cmGlobalGeneratorSimpleFactory<cmGlobalNinjaGenerator>(); }
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/// Destructor.
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virtual ~cmGlobalNinjaGenerator() { }
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/// Overloaded methods. @see cmGlobalGenerator::CreateLocalGenerator()
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virtual cmLocalGenerator* CreateLocalGenerator();
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/// Overloaded methods. @see cmGlobalGenerator::GetName().
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virtual const char* GetName() const {
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return cmGlobalNinjaGenerator::GetActualName(); }
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/// @return the name of this generator.
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static const char* GetActualName() { return "Ninja"; }
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/// Overloaded methods. @see cmGlobalGenerator::GetDocumentation()
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static void GetDocumentation(cmDocumentationEntry& entry);
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/// Overloaded methods. @see cmGlobalGenerator::Generate()
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virtual void Generate();
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/// Overloaded methods. @see cmGlobalGenerator::EnableLanguage()
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virtual void EnableLanguage(std::vector<std::string>const& languages,
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cmMakefile* mf,
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bool optional);
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/// Overloaded methods. @see cmGlobalGenerator::GenerateBuildCommand()
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virtual std::string GenerateBuildCommand(const char* makeProgram,
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const char* projectName,
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const char* projectDir,
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const char* additionalOptions,
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const char* targetName,
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const char* config,
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bool ignoreErrors,
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bool fast);
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// Setup target names
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virtual const char* GetAllTargetName() const { return "all"; }
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virtual const char* GetInstallTargetName() const { return "install"; }
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virtual const char* GetInstallLocalTargetName() const {
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return "install/local";
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}
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virtual const char* GetInstallStripTargetName() const {
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return "install/strip";
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}
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virtual const char* GetTestTargetName() const { return "test"; }
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virtual const char* GetPackageTargetName() const { return "package"; }
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virtual const char* GetPackageSourceTargetName() const {
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return "package_source";
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}
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virtual const char* GetEditCacheTargetName() const {
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return "edit_cache";
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}
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virtual const char* GetRebuildCacheTargetName() const {
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return "rebuild_cache";
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}
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virtual const char* GetCleanTargetName() const { return "clean"; }
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cmGeneratedFileStream* GetBuildFileStream() const {
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return this->BuildFileStream; }
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cmGeneratedFileStream* GetRulesFileStream() const {
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return this->RulesFileStream; }
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void AddCXXCompileCommand(const std::string &commandLine,
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const std::string &sourceFile);
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/**
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* Add a rule to the generated build system.
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* Call WriteRule() behind the scene but perform some check before like:
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* - Do not add twice the same rule.
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*/
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void AddRule(const std::string& name,
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const std::string& command,
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const std::string& description,
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const std::string& comment,
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const std::string& depfile = "",
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const std::string& rspfile = "",
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const std::string& rspcontent = "",
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bool restat = false,
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bool generator = false);
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bool HasRule(const std::string& name);
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void AddCustomCommandRule();
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void AddMacOSXContentRule();
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bool HasCustomCommandOutput(const std::string &output) {
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return this->CustomCommandOutputs.find(output) !=
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this->CustomCommandOutputs.end();
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}
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/// Called when we have seen the given custom command. Returns true
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/// if we has seen it before.
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bool SeenCustomCommand(cmCustomCommand const *cc) {
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return !this->CustomCommands.insert(cc).second;
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}
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/// Called when we have seen the given custom command output.
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void SeenCustomCommandOutput(const std::string &output) {
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this->CustomCommandOutputs.insert(output);
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// We don't need the assumed dependencies anymore, because we have
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// an output.
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this->AssumedSourceDependencies.erase(output);
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}
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void AddAssumedSourceDependencies(const std::string &source,
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const cmNinjaDeps &deps) {
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std::set<std::string> &ASD = this->AssumedSourceDependencies[source];
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// Because we may see the same source file multiple times (same source
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// specified in multiple targets), compute the union of any assumed
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// dependencies.
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ASD.insert(deps.begin(), deps.end());
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}
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void AppendTargetOutputs(cmTarget* target, cmNinjaDeps& outputs);
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void AppendTargetDepends(cmTarget* target, cmNinjaDeps& outputs);
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void AddDependencyToAll(cmTarget* target);
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void AddDependencyToAll(const std::string& input);
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const std::vector<cmLocalGenerator*>& GetLocalGenerators() const {
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return LocalGenerators; }
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bool IsExcluded(cmLocalGenerator* root, cmTarget& target) {
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return cmGlobalGenerator::IsExcluded(root, target); }
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int GetRuleCmdLength(const std::string& name) {
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return RuleCmdLength[name]; }
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void AddTargetAlias(const std::string& alias, cmTarget* target);
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protected:
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/// Overloaded methods.
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/// @see cmGlobalGenerator::CheckALLOW_DUPLICATE_CUSTOM_TARGETS()
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virtual bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() { return true; }
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private:
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/// @see cmGlobalGenerator::ComputeTargetObjects
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virtual void ComputeTargetObjects(cmGeneratorTarget* gt) const;
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void OpenBuildFileStream();
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void CloseBuildFileStream();
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void CloseCompileCommandsStream();
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void OpenRulesFileStream();
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void CloseRulesFileStream();
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/// Write the common disclaimer text at the top of each build file.
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void WriteDisclaimer(std::ostream& os);
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void WriteAssumedSourceDependencies();
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void WriteTargetAliases(std::ostream& os);
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void WriteUnknownExplicitDependencies(std::ostream& os);
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void WriteBuiltinTargets(std::ostream& os);
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void WriteTargetAll(std::ostream& os);
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void WriteTargetRebuildManifest(std::ostream& os);
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void WriteTargetClean(std::ostream& os);
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void WriteTargetHelp(std::ostream& os);
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std::string ninjaCmd() const;
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/// The file containing the build statement. (the relation ship of the
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/// compilation DAG).
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cmGeneratedFileStream* BuildFileStream;
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/// The file containing the rule statements. (The action attached to each
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/// edge of the compilation DAG).
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cmGeneratedFileStream* RulesFileStream;
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cmGeneratedFileStream* CompileCommandsStream;
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/// The type used to store the set of rules added to the generated build
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/// system.
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typedef std::set<std::string> RulesSetType;
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/// The set of rules added to the generated build system.
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RulesSetType Rules;
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/// Length of rule command, used by rsp file evaluation
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std::map<std::string, int> RuleCmdLength;
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/// The set of dependencies to add to the "all" target.
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cmNinjaDeps AllDependencies;
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/// The set of custom commands we have seen.
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std::set<cmCustomCommand const*> CustomCommands;
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/// The set of custom command outputs we have seen.
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std::set<std::string> CustomCommandOutputs;
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//The combined explicit dependencies of all build commands that the global
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//generator has issued. When combined with CombinedBuildOutputs it allows
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//us to detect the set of explicit dependencies that have
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std::set<std::string> CombinedBuildExplicitDependencies;
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std::set<std::string> CombinedBuildOutputs;
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/// The mapping from source file to assumed dependencies.
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std::map<std::string, std::set<std::string> > AssumedSourceDependencies;
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typedef std::map<std::string, cmTarget*> TargetAliasMap;
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TargetAliasMap TargetAliases;
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static cmLocalGenerator* LocalGenerator;
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static bool UsingMinGW;
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};
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#endif // ! cmGlobalNinjaGenerator_h
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