CMake/Source/cmTarget.cxx

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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
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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.
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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.
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=========================================================================*/
#include "cmTarget.h"
#include "cmMakefile.h"
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#include "cmSourceFile.h"
#include "cmLocalGenerator.h"
#include "cmGlobalGenerator.h"
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#include <map>
#include <set>
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#include <queue>
#include <stdlib.h> // required for atof
const char* cmTarget::TargetTypeNames[] = {
"EXECUTABLE", "STATIC_LIBRARY",
"SHARED_LIBRARY", "MODULE_LIBRARY", "UTILITY", "GLOBAL_TARGET",
"INSTALL_FILES", "INSTALL_PROGRAMS", "INSTALL_DIRECTORY"
};
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//----------------------------------------------------------------------------
cmTarget::cmTarget()
{
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this->Makefile = 0;
this->LinkLibrariesAnalyzed = false;
this->LinkDirectoriesComputed = false;
this->HaveInstallRule = false;
}
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void cmTarget::SetType(TargetType type, const char* name)
{
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this->Name = name;
// only add dependency information for library targets
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this->TargetTypeValue = type;
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if(this->TargetTypeValue >= STATIC_LIBRARY
&& this->TargetTypeValue <= MODULE_LIBRARY)
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{
this->RecordDependencies = true;
}
else
{
this->RecordDependencies = false;
}
}
//----------------------------------------------------------------------------
void cmTarget::SetMakefile(cmMakefile* mf)
{
// Set our makefile.
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this->Makefile = mf;
// Setup default property values.
this->SetPropertyDefault("INSTALL_NAME_DIR", "");
this->SetPropertyDefault("INSTALL_RPATH", "");
this->SetPropertyDefault("INSTALL_RPATH_USE_LINK_PATH", "OFF");
this->SetPropertyDefault("SKIP_BUILD_RPATH", "OFF");
this->SetPropertyDefault("BUILD_WITH_INSTALL_RPATH", "OFF");
// Collect the set of configuration types.
std::vector<std::string> configNames;
if(const char* configurationTypes =
mf->GetDefinition("CMAKE_CONFIGURATION_TYPES"))
{
cmSystemTools::ExpandListArgument(configurationTypes, configNames);
}
else if(const char* buildType = mf->GetDefinition("CMAKE_BUILD_TYPE"))
{
if(*buildType)
{
configNames.push_back(buildType);
}
}
// Setup per-configuration property default values.
for(std::vector<std::string>::iterator ci = configNames.begin();
ci != configNames.end(); ++ci)
{
// Initialize per-configuration name postfix property from the
// variable only for non-executable targets. This preserves
// compatibility with previous CMake versions in which executables
// did not support this variable. Projects may still specify the
// property directly. TODO: Make this depend on backwards
// compatibility setting.
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if(this->TargetTypeValue != cmTarget::EXECUTABLE)
{
std::string property = cmSystemTools::UpperCase(*ci);
property += "_POSTFIX";
this->SetPropertyDefault(property.c_str(), 0);
}
}
}
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void cmTarget::TraceVSDependencies(std::string projFile,
cmMakefile *makefile)
{
// get the classes from the source lists then add them to the groups
std::vector<cmSourceFile*> & classes = this->GetSourceFiles();
// use a deck to keep track of processed source files
std::queue<std::string> srcFilesToProcess;
std::set<cmStdString> srcFilesQueued;
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std::string name;
std::vector<cmSourceFile*> newClasses;
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for(std::vector<cmSourceFile*>::const_iterator i = classes.begin();
i != classes.end(); ++i)
{
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name = (*i)->GetSourceName();
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if ((*i)->GetSourceExtension() != "rule")
{
name += ".";
name += (*i)->GetSourceExtension();
}
srcFilesToProcess.push(name);
srcFilesQueued.insert(name);
// does this sourcefile have object depends on it?
// If so then add them as well
const char* additionalDeps = (*i)->GetProperty("OBJECT_DEPENDS");
std::vector<std::string> depends = (*i)->GetDepends();
if (additionalDeps || depends.size())
{
if(additionalDeps)
{
cmSystemTools::ExpandListArgument(additionalDeps, depends);
}
for(std::vector<std::string>::iterator id = depends.begin();
id != depends.end(); ++id)
{
// if there is a custom rule to generate that dependency
// then add it to the list
cmSourceFile* outsf =
makefile->GetSourceFileWithOutput(id->c_str());
// if a source file was found then add it
if (outsf &&
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(std::find(classes.begin(),classes.end(),outsf) == classes.end())
&&
(std::find(newClasses.begin(),newClasses.end(),outsf)
== newClasses.end()))
{
// then add the source to this target and add it to the queue
newClasses.push_back(outsf);
name = outsf->GetSourceName();
if (outsf->GetSourceExtension() != "rule")
{
name += ".";
name += outsf->GetSourceExtension();
}
std::string temp =
cmSystemTools::GetFilenamePath(outsf->GetFullPath());
temp += "/";
temp += name;
// if it hasn't been processed
if (srcFilesQueued.find(temp) == srcFilesQueued.end())
{
srcFilesToProcess.push(temp);
srcFilesQueued.insert(temp);
}
}
}
}
}
for(std::vector<cmSourceFile*>::const_iterator i = newClasses.begin();
i != newClasses.end(); ++i)
{
classes.push_back(*i);
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}
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// add in the project file itself
if (projFile.size())
{
srcFilesToProcess.push(projFile);
srcFilesQueued.insert(projFile);
}
// add in the library depends for custom targets
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if (this->GetType() == cmTarget::UTILITY ||
this->GetType() == cmTarget::GLOBAL_TARGET)
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{
for (std::vector<cmCustomCommand>::iterator ic =
this->GetPostBuildCommands().begin();
ic != this->GetPostBuildCommands().end(); ++ic)
{
cmCustomCommand &c = *ic;
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for (std::vector<std::string>::const_iterator i
= c.GetDepends().begin(); i != c.GetDepends().end(); ++i)
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{
srcFilesToProcess.push(*i);
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srcFilesQueued.insert(*i);
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}
}
}
while (!srcFilesToProcess.empty())
{
// is this source the output of a custom command
cmSourceFile* outsf =
makefile->GetSourceFileWithOutput(srcFilesToProcess.front().c_str());
if (outsf)
{
// is it not already in the target?
if (std::find(classes.begin(),classes.end(),outsf) == classes.end())
{
// then add the source to this target and add it to the queue
classes.push_back(outsf);
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name = outsf->GetSourceName();
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if (outsf->GetSourceExtension() != "rule")
{
name += ".";
name += outsf->GetSourceExtension();
}
std::string temp =
cmSystemTools::GetFilenamePath(outsf->GetFullPath());
temp += "/";
temp += name;
// if it hasn't been processed
if (srcFilesQueued.find(temp) == srcFilesQueued.end())
{
srcFilesToProcess.push(temp);
srcFilesQueued.insert(temp);
}
}
// add its dependencies to the list to check
unsigned int i;
for (i = 0; i < outsf->GetCustomCommand()->GetDepends().size(); ++i)
{
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std::string dep = cmSystemTools::GetFilenameName(
outsf->GetCustomCommand()->GetDepends()[i]);
if (cmSystemTools::GetFilenameLastExtension(dep) == ".exe")
{
dep = cmSystemTools::GetFilenameWithoutLastExtension(dep);
}
bool isUtility = false;
// see if we can find a target with this name
cmTarget* t = this->Makefile->GetLocalGenerator()->
GetGlobalGenerator()->FindTarget(0, dep.c_str());
if(t)
{
// if we find the target and the dep was given as a full
// path, then make sure it was not a full path to something
// else, and the fact that the name matched a target was
// just a coincident
if(cmSystemTools::FileIsFullPath(
outsf->GetCustomCommand()->GetDepends()[i].c_str()))
{
std::string tLocation = t->GetLocation(0);
tLocation = cmSystemTools::GetFilenamePath(tLocation);
std::string depLocation = cmSystemTools::GetFilenamePath(
std::string(outsf->GetCustomCommand()->GetDepends()[i].c_str()));
if(depLocation == tLocation)
{
isUtility = true;
}
}
// if it was not a full path then it must be a target
else
{
isUtility = true;
}
}
if(isUtility)
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{
// add the depend as a utility on the target
this->AddUtility(dep.c_str());
}
else
{
if (srcFilesQueued.find(outsf->GetCustomCommand()->GetDepends()[i])
== srcFilesQueued.end())
{
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srcFilesToProcess.push
(outsf->GetCustomCommand()->GetDepends()[i]);
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srcFilesQueued.insert(outsf->GetCustomCommand()->GetDepends()[i]);
}
}
}
}
// finished with this SF move to the next
srcFilesToProcess.pop();
}
// mark all custom commands in the targets list of source files as used.
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for(std::vector<cmSourceFile*>::iterator i = this->SourceFiles.begin();
i != this->SourceFiles.end(); ++i)
{
cmCustomCommand* cc = (*i)->GetCustomCommand();
if(cc)
{
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cc->SetUsed();
}
}
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}
void cmTarget::GenerateSourceFilesFromSourceLists( cmMakefile &mf)
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{
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// this is only done for non install targets
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if ((this->TargetTypeValue == cmTarget::INSTALL_FILES)
|| (this->TargetTypeValue == cmTarget::INSTALL_PROGRAMS))
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{
return;
}
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// for each src lists add the classes
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for (std::vector<std::string>::const_iterator s = this->SourceLists.begin();
s != this->SourceLists.end(); ++s)
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{
int done = 0;
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// replace any variables
std::string temps = *s;
mf.ExpandVariablesInString(temps);
// Next if one wasn't found then assume it is a single class
// check to see if it is an existing source file
if (!done)
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{
cmSourceFile* sourceFile = mf.GetSource(temps.c_str());
if ( sourceFile )
{
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this->SourceFiles.push_back(sourceFile);
done = 1;
}
}
// if we still are not done, try to create the SourceFile structure
if (!done)
{
cmSourceFile file;
file.SetProperty("ABSTRACT","0");
file.SetName(temps.c_str(), mf.GetCurrentDirectory(),
mf.GetSourceExtensions(),
mf.GetHeaderExtensions(), this->Name.c_str());
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this->SourceFiles.push_back(mf.AddSource(file));
}
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}
// expand any link library variables whle we are at it
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LinkLibraryVectorType::iterator p = this->LinkLibraries.begin();
for (;p != this->LinkLibraries.end(); ++p)
{
mf.ExpandVariablesInString(p->first, true, true);
}
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}
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void cmTarget::MergeLinkLibraries( cmMakefile& mf,
const char *selfname,
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const LinkLibraryVectorType& libs )
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{
// Only add on libraries we haven't added on before.
// Assumption: the global link libraries could only grow, never shrink
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LinkLibraryVectorType::const_iterator i = libs.begin();
i += this->PrevLinkedLibraries.size();
for( ; i != libs.end(); ++i )
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{
// We call this so that the dependencies get written to the cache
this->AddLinkLibrary( mf, selfname, i->first.c_str(), i->second );
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}
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this->PrevLinkedLibraries = libs;
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}
//----------------------------------------------------------------------------
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void cmTarget::AddLinkDirectory(const char* d)
{
// Make sure we don't add unnecessary search directories.
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if(std::find(this->ExplicitLinkDirectories.begin(),
this->ExplicitLinkDirectories.end(), d)
== this->ExplicitLinkDirectories.end() )
{
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this->ExplicitLinkDirectories.push_back( d );
this->LinkDirectoriesComputed = false;
}
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}
//----------------------------------------------------------------------------
const std::vector<std::string>& cmTarget::GetLinkDirectories()
{
// Make sure all library dependencies have been analyzed.
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if(!this->LinkLibrariesAnalyzed && !this->LinkLibraries.empty())
{
cmSystemTools::Error(
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"cmTarget::GetLinkDirectories called before "
"cmTarget::AnalyzeLibDependencies on target ",
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this->Name.c_str());
}
// Make sure the complete set of link directories has been computed.
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if(!this->LinkDirectoriesComputed)
{
// Compute the full set of link directories including the
// locations of targets that have been linked in. Start with the
// link directories given explicitly.
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this->LinkDirectories = this->ExplicitLinkDirectories;
for(LinkLibraryVectorType::iterator ll = this->LinkLibraries.begin();
ll != this->LinkLibraries.end(); ++ll)
{
// If this library is a CMake target then add its location as a
// link directory.
std::string lib = ll->first;
cmTarget* tgt = 0;
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if(this->Makefile && this->Makefile->GetLocalGenerator() &&
this->Makefile->GetLocalGenerator()->GetGlobalGenerator())
{
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tgt = (this->Makefile->GetLocalGenerator()->GetGlobalGenerator()
->FindTarget(0, lib.c_str()));
}
if(tgt)
{
// Add the directory only if it is not already present. This
// is an N^2 algorithm for adding the directories, but N
// should not get very big.
const char* libpath = tgt->GetDirectory();
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if(std::find(this->LinkDirectories.begin(),
this->LinkDirectories.end(),
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libpath) == this->LinkDirectories.end())
{
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this->LinkDirectories.push_back(libpath);
}
}
}
// The complete set of link directories has now been computed.
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this->LinkDirectoriesComputed = true;
}
// Return the complete set of link directories.
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return this->LinkDirectories;
}
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void cmTarget::ClearDependencyInformation( cmMakefile& mf,
const char* target )
{
// Clear the dependencies. The cache variable must exist iff we are
// recording dependency information for this target.
std::string depname = target;
depname += "_LIB_DEPENDS";
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if (this->RecordDependencies)
{
mf.AddCacheDefinition(depname.c_str(), "",
"Dependencies for target", cmCacheManager::STATIC);
}
else
{
if (mf.GetDefinition( depname.c_str() ))
{
std::string message = "Target ";
message += target;
message += " has dependency information when it shouldn't.\n";
message += "Your cache is probably stale. Please remove the entry\n ";
message += depname;
message += "\nfrom the cache.";
cmSystemTools::Error( message.c_str() );
}
}
}
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void cmTarget::AddLinkLibrary(const std::string& lib,
LinkLibraryType llt)
{
this->AddFramework(lib.c_str(), llt);
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this->LinkLibraries.push_back( std::pair<std::string,
cmTarget::LinkLibraryType>(lib,llt) );
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}
bool cmTarget::AddFramework(const std::string& libname, LinkLibraryType llt)
{
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(void)llt; // TODO: What is this?
if(cmSystemTools::IsPathToFramework(libname.c_str()))
{
std::string frameworkDir = libname;
frameworkDir += "/../";
frameworkDir = cmSystemTools::CollapseFullPath(frameworkDir.c_str());
std::vector<std::string>::iterator i =
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std::find(this->Frameworks.begin(),
this->Frameworks.end(), frameworkDir);
if(i == this->Frameworks.end())
{
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this->Frameworks.push_back(frameworkDir);
}
return true;
}
return false;
}
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void cmTarget::AddLinkLibrary(cmMakefile& mf,
const char *target, const char* lib,
LinkLibraryType llt)
{
// Never add a self dependency, even if the user asks for it.
if(strcmp( target, lib ) == 0)
{
return;
}
this->AddFramework(lib, llt);
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this->LinkLibraries.push_back( std::pair<std::string,
cmTarget::LinkLibraryType>(lib,llt) );
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if(llt != cmTarget::GENERAL)
{
// Store the library's link type in the cache. If it is a
// conflicting type then assume it is always used. This is the
// case when the user sets the cache entries for debug and
// optimized versions of the library to the same value.
std::string linkTypeName = lib;
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linkTypeName += "_LINK_TYPE";
switch(llt)
{
case cmTarget::DEBUG:
{
const char* def = mf.GetDefinition(linkTypeName.c_str());
if(!def || strcmp(def, "debug") == 0)
{
mf.AddCacheDefinition(linkTypeName.c_str(),
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"debug",
"Library is used for debug links only",
cmCacheManager::STATIC);
}
else
{
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mf.AddCacheDefinition
(linkTypeName.c_str(), "general",
"Library is used for both debug and optimized links",
cmCacheManager::STATIC);
}
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}
break;
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case cmTarget::OPTIMIZED:
{
const char* def = mf.GetDefinition(linkTypeName.c_str());
if(!def || strcmp(def, "optimized") == 0)
{
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mf.AddCacheDefinition
(linkTypeName.c_str(), "optimized",
"Library is used for debug links only",
cmCacheManager::STATIC);
}
else
{
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mf.AddCacheDefinition
(linkTypeName.c_str(), "general",
"Library is used for both debug and optimized links",
cmCacheManager::STATIC);
}
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}
break;
case cmTarget::GENERAL:
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break;
}
}
// Add the explicit dependency information for this target. This is
// simply a set of libraries separated by ";". There should always
// be a trailing ";". These library names are not canonical, in that
// they may be "-framework x", "-ly", "/path/libz.a", etc.
// We shouldn't remove duplicates here because external libraries
// may be purposefully duplicated to handle recursive dependencies,
// and we removing one instance will break the link line. Duplicates
// will be appropriately eliminated at emit time.
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if(this->RecordDependencies)
{
std::string targetEntry = target;
targetEntry += "_LIB_DEPENDS";
std::string dependencies;
const char* old_val = mf.GetDefinition( targetEntry.c_str() );
if( old_val )
{
dependencies += old_val;
}
dependencies += lib;
dependencies += ";";
mf.AddCacheDefinition( targetEntry.c_str(), dependencies.c_str(),
"Dependencies for the target",
cmCacheManager::STATIC );
}
}
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void
cmTarget::AnalyzeLibDependencies( const cmMakefile& mf )
{
// There are two key parts of the dependency analysis: (1)
// determining the libraries in the link line, and (2) constructing
// the dependency graph for those libraries.
//
// The latter is done using the cache entries that record the
// dependencies of each library.
//
// The former is a more thorny issue, since it is not clear how to
// determine if two libraries listed on the link line refer to the a
// single library or not. For example, consider the link "libraries"
// /usr/lib/libtiff.so -ltiff
// Is this one library or two? The solution implemented here is the
// simplest (and probably the only practical) one: two libraries are
// the same if their "link strings" are identical. Thus, the two
// libraries above are considered distinct. This also means that for
// dependency analysis to be effective, the CMake user must specify
// libraries build by his project without using any linker flags or
// file extensions. That is,
// LINK_LIBRARIES( One Two )
// instead of
// LINK_LIBRARIES( -lOne ${binarypath}/libTwo.a )
// The former is probably what most users would do, but it never
// hurts to document the assumptions. :-) Therefore, in the analysis
// code, the "canonical name" of a library is simply its name as
// given to a LINK_LIBRARIES command.
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//
// Also, we will leave the original link line intact; we will just add any
// dependencies that were missing.
//
// There is a problem with recursive external libraries
// (i.e. libraries with no dependency information that are
// recursively dependent). We must make sure that the we emit one of
// the libraries twice to satisfy the recursion, but we shouldn't
// emit it more times than necessary. In particular, we must make
// sure that handling this improbable case doesn't cost us when
// dealing with the common case of non-recursive libraries. The
// solution is to assume that the recursion is satisfied at one node
// of the dependency tree. To illustrate, assume libA and libB are
// extrenal and mutually dependent. Suppose libX depends on
// libA, and libY on libA and libX. Then
// TARGET_LINK_LIBRARIES( Y X A B A )
// TARGET_LINK_LIBRARIES( X A B A )
// TARGET_LINK_LIBRARIES( Exec Y )
// would result in "-lY -lX -lA -lB -lA". This is the correct way to
// specify the dependencies, since the mutual dependency of A and B
// is resolved *every time libA is specified*.
//
// Something like
// TARGET_LINK_LIBRARIES( Y X A B A )
// TARGET_LINK_LIBRARIES( X A B )
// TARGET_LINK_LIBRARIES( Exec Y )
// would result in "-lY -lX -lA -lB", and the mutual dependency
// information is lost. This is because in some case (Y), the mutual
// dependency of A and B is listed, while in another other case (X),
// it is not. Depending on which line actually emits A, the mutual
// dependency may or may not be on the final link line. We can't
// handle this pathalogical case cleanly without emitting extra
// libraries for the normal cases. Besides, the dependency
// information for X is wrong anyway: if we build an executable
// depending on X alone, we would not have the mutual dependency on
// A and B resolved.
//
// IMPROVEMENTS:
// -- The current algorithm will not always pick the "optimal" link line
// when recursive dependencies are present. It will instead break the
// cycles at an aribtrary point. The majority of projects won't have
// cyclic dependencies, so this is probably not a big deal. Note that
// the link line is always correct, just not necessary optimal.
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typedef std::vector< std::string > LinkLine;
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// The dependency map.
DependencyMap dep_map;
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if ( this->OriginalLinkLibraries.size() == 0 )
{
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this->OriginalLinkLibraries = this->LinkLibraries;
}
// 1. Build the dependency graph
//
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for(LinkLibraryVectorType::reverse_iterator lib
= this->LinkLibraries.rbegin();
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lib != this->LinkLibraries.rend(); ++lib)
{
this->GatherDependencies( mf, lib->first, dep_map );
}
// 2. Remove any dependencies that are already satisfied in the original
// link line.
//
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for(LinkLibraryVectorType::iterator lib = this->LinkLibraries.begin();
lib != this->LinkLibraries.end(); ++lib)
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{
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for( LinkLibraryVectorType::iterator lib2 = lib;
lib2 != this->LinkLibraries.end(); ++lib2)
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{
DeleteDependency( dep_map, lib->first, lib2->first );
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}
}
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// 3. Create the new link line by simply emitting any dependencies that are
// missing. Start from the back and keep adding.
//
std::set<cmStdString> done, visited;
std::vector<std::string> newLinkLibraries;
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for(LinkLibraryVectorType::reverse_iterator lib =
this->LinkLibraries.rbegin();
lib != this->LinkLibraries.rend(); ++lib)
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{
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// skip zero size library entries, this may happen
// if a variable expands to nothing.
if (lib->first.size() != 0)
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{
Emit( lib->first, dep_map, done, visited, newLinkLibraries );
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}
}
// 4. Add the new libraries to the link line.
//
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for( std::vector<std::string>::reverse_iterator k =
newLinkLibraries.rbegin();
k != newLinkLibraries.rend(); ++k )
{
std::string linkType = *k;
linkType += "_LINK_TYPE";
cmTarget::LinkLibraryType llt = cmTarget::GENERAL;
const char* linkTypeString = mf.GetDefinition( linkType.c_str() );
if(linkTypeString)
{
if(strcmp(linkTypeString, "debug") == 0)
{
llt = cmTarget::DEBUG;
}
if(strcmp(linkTypeString, "optimized") == 0)
{
llt = cmTarget::OPTIMIZED;
}
}
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this->LinkLibraries.push_back( std::make_pair(*k,llt) );
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}
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this->LinkLibrariesAnalyzed = true;
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}
void cmTarget::InsertDependency( DependencyMap& depMap,
const cmStdString& lib,
const cmStdString& dep )
{
depMap[lib].push_back(dep);
}
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void cmTarget::DeleteDependency( DependencyMap& depMap,
const cmStdString& lib,
const cmStdString& dep )
{
// Make sure there is an entry in the map for lib. If so, delete all
// dependencies to dep. There may be repeated entries because of
// external libraries that are specified multiple times.
DependencyMap::iterator map_itr = depMap.find( lib );
if( map_itr != depMap.end() )
{
DependencyList& depList = map_itr->second;
DependencyList::iterator itr;
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while( (itr = std::find(depList.begin(), depList.end(), dep)) !=
depList.end() )
{
depList.erase( itr );
}
}
}
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void cmTarget::Emit( const std::string& lib,
const DependencyMap& dep_map,
std::set<cmStdString>& emitted,
std::set<cmStdString>& visited,
std::vector<std::string>& link_line )
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{
// It's already been emitted
if( emitted.find(lib) != emitted.end() )
{
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return;
}
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// Emit the dependencies only if this library node hasn't been
// visited before. If it has, then we have a cycle. The recursion
// that got us here should take care of everything.
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if( visited.insert(lib).second )
{
if( dep_map.find(lib) != dep_map.end() ) // does it have dependencies?
{
const DependencyList& dep_on = dep_map.find( lib )->second;
DependencyList::const_reverse_iterator i;
// To cater for recursive external libraries, we must emit
// duplicates on this link line *unless* they were emitted by
// some other node, in which case we assume that the recursion
// was resolved then. We making the simplifying assumption that
// any duplicates on a single link line are on purpose, and must
// be preserved.
// This variable will keep track of the libraries that were
// emitted directory from the current node, and not from a
// recursive call. This way, if we come across a library that
// has already been emitted, we repeat it iff it has been
// emitted here.
std::set<cmStdString> emitted_here;
for( i = dep_on.rbegin(); i != dep_on.rend(); ++i )
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{
if( emitted_here.find(*i) != emitted_here.end() )
{
// a repeat. Must emit.
emitted.insert(*i);
link_line.push_back( *i );
}
else
{
// Emit only if no-one else has
if( emitted.find(*i) == emitted.end() )
{
// emit dependencies
Emit( *i, dep_map, emitted, visited, link_line );
// emit self
emitted.insert(*i);
emitted_here.insert(*i);
link_line.push_back( *i );
}
}
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}
}
}
}
void cmTarget::GatherDependencies( const cmMakefile& mf,
const std::string& lib,
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DependencyMap& dep_map )
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{
// If the library is already in the dependency map, then it has
// already been fully processed.
if( dep_map.find(lib) != dep_map.end() )
{
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return;
}
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const char* deps = mf.GetDefinition( (lib+"_LIB_DEPENDS").c_str() );
if( deps && strcmp(deps,"") != 0 )
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{
// Make sure this library is in the map, even if it has an empty
// set of dependencies. This distinguishes the case of explicitly
// no dependencies with that of unspecified dependencies.
dep_map[lib];
// Parse the dependency information, which is simply a set of
// libraries separated by ";". There is always a trailing ";".
std::string depline = deps;
std::string::size_type start = 0;
std::string::size_type end;
end = depline.find( ";", start );
while( end != std::string::npos )
{
std::string l = depline.substr( start, end-start );
if( l.size() != 0 )
{
InsertDependency( dep_map, lib, l );
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GatherDependencies( mf, l, dep_map );
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}
start = end+1; // skip the ;
end = depline.find( ";", start );
}
DeleteDependency( dep_map, lib, lib); // cannot depend on itself
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}
}
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void cmTarget::SetProperty(const char* prop, const char* value)
{
if (!prop)
{
return;
}
if (!value)
{
value = "NOTFOUND";
}
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this->Properties[prop] = value;
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}
const char* cmTarget::GetDirectory(const char* config)
{
switch( this->GetType() )
{
case cmTarget::STATIC_LIBRARY:
case cmTarget::MODULE_LIBRARY:
case cmTarget::SHARED_LIBRARY:
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this->Directory =
this->Makefile->GetSafeDefinition("LIBRARY_OUTPUT_PATH");
break;
case cmTarget::EXECUTABLE:
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this->Directory =
this->Makefile->GetSafeDefinition("EXECUTABLE_OUTPUT_PATH");
break;
default:
return 0;
}
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if(this->Directory.empty())
{
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this->Directory = this->Makefile->GetStartOutputDirectory();
}
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if(config)
{
// Add the configuration's subdirectory.
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this->Makefile->GetLocalGenerator()->GetGlobalGenerator()->
AppendDirectoryForConfig("/", config, "", this->Directory);
}
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return this->Directory.c_str();
}
const char* cmTarget::GetLocation(const char* config)
{
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this->Location = this->GetDirectory();
if(!this->Location.empty())
{
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this->Location += "/";
}
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const char* cfgid = this->Makefile->GetDefinition("CMAKE_CFG_INTDIR");
if(cfgid && strcmp(cfgid, ".") != 0)
{
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this->Location += cfgid;
this->Location += "/";
}
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this->Location += this->GetFullName(config, false);
return this->Location.c_str();
}
//----------------------------------------------------------------------------
void cmTarget::GetTargetVersion(int& major, int& minor)
{
// Set the default values.
major = 0;
minor = 0;
// Look for a VERSION property.
if(const char* version = this->GetProperty("VERSION"))
{
// Try to parse the version number and store the results that were
// successfully parsed.
int parsed_major;
int parsed_minor;
switch(sscanf(version, "%d.%d", &parsed_major, &parsed_minor))
{
case 2: minor = parsed_minor; // no break!
case 1: major = parsed_major; // no break!
default: break;
}
}
}
const char *cmTarget::GetProperty(const char* prop)
{
// watch for special "computed" properties that are dependent on other
// properties or variables, always recompute them
if (!strcmp(prop,"LOCATION"))
{
// Set the LOCATION property of the target. Note that this cannot take
// into account the per-configuration name of the target because the
// configuration type may not be known at CMake time. We should
// deprecate this feature and instead support transforming an executable
// target name given as the command part of custom commands into the
// proper path at build time. Alternatively we could put environment
// variable settings in all custom commands that hold the name of the
// target for each configuration and then give a reference to the
// variable in the location.
this->SetProperty("LOCATION", this->GetLocation(0));
}
// Per-configuration location can be computed.
int len = static_cast<int>(strlen(prop));
if(len > 9 && strcmp(prop+len-9, "_LOCATION") == 0)
{
std::string configName(prop, len-9);
this->SetProperty(prop, this->GetLocation(configName.c_str()));
}
// the type property returns what type the target is
if (!strcmp(prop,"TYPE"))
{
switch( this->GetType() )
{
case cmTarget::STATIC_LIBRARY:
return "STATIC_LIBRARY";
// break; /* unreachable */
case cmTarget::MODULE_LIBRARY:
return "MODULE_LIBRARY";
// break; /* unreachable */
case cmTarget::SHARED_LIBRARY:
return "SHARED_LIBRARY";
// break; /* unreachable */
case cmTarget::EXECUTABLE:
return "EXECUTABLE";
// break; /* unreachable */
case cmTarget::UTILITY:
return "UTILITY";
// break; /* unreachable */
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case cmTarget::GLOBAL_TARGET:
return "GLOBAL_TARGET";
// break; /* unreachable */
case cmTarget::INSTALL_FILES:
return "INSTALL_FILES";
// break; /* unreachable */
case cmTarget::INSTALL_PROGRAMS:
return "INSTALL_PROGRAMS";
// break; /* unreachable */
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case cmTarget::INSTALL_DIRECTORY:
return "INSTALL_DIRECTORY";
// break; /* unreachable */
}
return 0;
}
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std::map<cmStdString,cmStdString>::const_iterator i =
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this->Properties.find(prop);
if (i != this->Properties.end())
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{
return i->second.c_str();
}
return 0;
}
bool cmTarget::GetPropertyAsBool(const char* prop)
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{
std::map<cmStdString,cmStdString>::const_iterator i =
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this->Properties.find(prop);
if (i != this->Properties.end())
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{
return cmSystemTools::IsOn(i->second.c_str());
}
return false;
}
const char* cmTarget::GetLinkerLanguage(cmGlobalGenerator* gg)
{
if(this->GetProperty("HAS_CXX"))
{
const_cast<cmTarget*>(this)->SetProperty("LINKER_LANGUAGE", "CXX");
}
const char* linkerLang = this->GetProperty("LINKER_LANGUAGE");
if(linkerLang)
{
return linkerLang;
}
std::set<cmStdString> languages;
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for(std::vector<cmSourceFile*>::const_iterator i
= this->SourceFiles.begin();
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i != this->SourceFiles.end(); ++i)
{
const char* lang =
gg->GetLanguageFromExtension((*i)->GetSourceExtension().c_str());
if(lang)
{
languages.insert(lang);
}
}
if(languages.size() == 0)
{
return 0;
}
if(languages.size() == 1)
{
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const_cast<cmTarget*>(this)->SetProperty("LINKER_LANGUAGE",
languages.begin()->c_str());
return this->GetProperty("LINKER_LANGUAGE");
}
const char* prefLang = 0;
for(std::set<cmStdString>::const_iterator s = languages.begin();
s != languages.end(); ++s)
{
const char* lpref = gg->GetLinkerPreference(s->c_str());
if(lpref[0] == 'P')
{
if(prefLang && !(*s == prefLang))
{
std::string m = "Error Target: ";
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m += this->Name + " Contains more than one Prefered language: ";
m += *s;
m += " and ";
m += prefLang;
m += "\nYou must set the LINKER_LANGUAGE property for this target.";
cmSystemTools::Error(m.c_str());
}
else
{
prefLang = s->c_str();
}
}
}
if(!prefLang)
{
prefLang = languages.begin()->c_str();
}
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const_cast<cmTarget*>(this)->SetProperty("LINKER_LANGUAGE", prefLang);
return this->GetProperty("LINKER_LANGUAGE");
}
const char* cmTarget::GetCreateRuleVariable()
{
switch(this->GetType())
{
case cmTarget::STATIC_LIBRARY:
return "_CREATE_STATIC_LIBRARY";
case cmTarget::SHARED_LIBRARY:
return "_CREATE_SHARED_LIBRARY";
case cmTarget::MODULE_LIBRARY:
return "_CREATE_SHARED_MODULE";
case cmTarget::EXECUTABLE:
return "_LINK_EXECUTABLE";
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case cmTarget::UTILITY:
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case cmTarget::GLOBAL_TARGET:
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case cmTarget::INSTALL_FILES:
case cmTarget::INSTALL_PROGRAMS:
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case cmTarget::INSTALL_DIRECTORY:
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break;
}
return "";
}
const char* cmTarget::GetSuffixVariableInternal(TargetType type,
bool implib)
{
switch(type)
{
case cmTarget::STATIC_LIBRARY:
return "CMAKE_STATIC_LIBRARY_SUFFIX";
case cmTarget::SHARED_LIBRARY:
return (implib
? "CMAKE_IMPORT_LIBRARY_SUFFIX"
: "CMAKE_SHARED_LIBRARY_SUFFIX");
case cmTarget::MODULE_LIBRARY:
return "CMAKE_SHARED_MODULE_SUFFIX";
case cmTarget::EXECUTABLE:
return "CMAKE_EXECUTABLE_SUFFIX";
case cmTarget::UTILITY:
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case cmTarget::GLOBAL_TARGET:
case cmTarget::INSTALL_FILES:
case cmTarget::INSTALL_PROGRAMS:
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case cmTarget::INSTALL_DIRECTORY:
break;
}
return "";
}
const char* cmTarget::GetPrefixVariableInternal(TargetType type,
bool implib)
{
switch(type)
{
case cmTarget::STATIC_LIBRARY:
return "CMAKE_STATIC_LIBRARY_PREFIX";
case cmTarget::SHARED_LIBRARY:
return (implib
? "CMAKE_IMPORT_LIBRARY_PREFIX"
: "CMAKE_SHARED_LIBRARY_PREFIX");
case cmTarget::MODULE_LIBRARY:
return "CMAKE_SHARED_MODULE_PREFIX";
case cmTarget::EXECUTABLE:
case cmTarget::UTILITY:
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case cmTarget::GLOBAL_TARGET:
case cmTarget::INSTALL_FILES:
case cmTarget::INSTALL_PROGRAMS:
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case cmTarget::INSTALL_DIRECTORY:
break;
}
return "";
}
//----------------------------------------------------------------------------
std::string cmTarget::GetFullName(const char* config, bool implib)
{
return this->GetFullNameInternal(this->GetType(), config, implib);
}
//----------------------------------------------------------------------------
void cmTarget::GetFullName(std::string& prefix, std::string& base,
std::string& suffix, const char* config,
bool implib)
{
this->GetFullNameInternal(this->GetType(), config, implib,
prefix, base, suffix);
}
//----------------------------------------------------------------------------
std::string cmTarget::GetFullPath(const char* config, bool implib)
{
// Start with the output directory for the target.
std::string fpath = this->GetDirectory(config);
fpath += "/";
// Add the full name of the target.
fpath += this->GetFullName(config, implib);
return fpath;
}
//----------------------------------------------------------------------------
std::string cmTarget::GetFullNameInternal(TargetType type, const char* config,
bool implib)
{
std::string prefix;
std::string base;
std::string suffix;
this->GetFullNameInternal(type, config, implib, prefix, base, suffix);
return prefix+base+suffix;
}
//----------------------------------------------------------------------------
void cmTarget::GetFullNameInternal(TargetType type,
const char* config,
bool implib,
std::string& outPrefix,
std::string& outBase,
std::string& outSuffix)
{
// Use just the target name for non-main target types.
if(type != cmTarget::STATIC_LIBRARY &&
type != cmTarget::SHARED_LIBRARY &&
type != cmTarget::MODULE_LIBRARY &&
type != cmTarget::EXECUTABLE)
{
outPrefix = "";
outBase = this->GetName();
outSuffix = "";
return;
}
// Return an empty name for the import library if this platform
// does not support import libraries.
if(implib &&
!this->Makefile->GetDefinition("CMAKE_IMPORT_LIBRARY_SUFFIX"))
{
outPrefix = "";
outBase = "";
outSuffix = "";
return;
}
// The implib option is only allowed for shared libraries.
if(type != cmTarget::SHARED_LIBRARY)
{
implib = false;
}
// Compute the full name for main target types.
const char* targetPrefix = (implib
? this->GetProperty("IMPORT_PREFIX")
: this->GetProperty("PREFIX"));
const char* targetSuffix = (implib
? this->GetProperty("IMPORT_SUFFIX")
: this->GetProperty("SUFFIX"));
const char* configPostfix = 0;
if(config && *config)
{
std::string configProp = cmSystemTools::UpperCase(config);
configProp += "_POSTFIX";
configPostfix = this->GetProperty(configProp.c_str());
}
const char* prefixVar = this->GetPrefixVariableInternal(type, implib);
const char* suffixVar = this->GetSuffixVariableInternal(type, implib);
const char* ll =
this->GetLinkerLanguage(
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this->Makefile->GetLocalGenerator()->GetGlobalGenerator());
// first try language specific suffix
if(ll)
{
if(!targetSuffix && suffixVar && *suffixVar)
{
std::string langSuff = suffixVar + std::string("_") + ll;
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targetSuffix = this->Makefile->GetDefinition(langSuff.c_str());
}
if(!targetPrefix && prefixVar && *prefixVar)
{
std::string langPrefix = prefixVar + std::string("_") + ll;
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targetPrefix = this->Makefile->GetDefinition(langPrefix.c_str());
}
}
// if there is no prefix on the target use the cmake definition
if(!targetPrefix && prefixVar)
{
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targetPrefix = this->Makefile->GetSafeDefinition(prefixVar);
}
// if there is no suffix on the target use the cmake definition
if(!targetSuffix && suffixVar)
{
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targetSuffix = this->Makefile->GetSafeDefinition(suffixVar);
}
// Begin the final name with the prefix.
outPrefix = targetPrefix?targetPrefix:"";
// Append the target name or property-specified name.
const char* outName = 0;
if(config && *config)
{
std::string configProp = cmSystemTools::UpperCase(config);
configProp += "_OUTPUT_NAME";
outName = this->GetProperty(configProp.c_str());
}
if(!outName)
{
outName = this->GetProperty("OUTPUT_NAME");
}
if(outName)
{
outBase = outName;
}
else
{
outBase = this->GetName();
}
// Append the per-configuration postfix.
outBase += configPostfix?configPostfix:"";
// Name shared libraries with their version number on some platforms.
if(const char* version = this->GetProperty("VERSION"))
{
if(type == cmTarget::SHARED_LIBRARY && !implib &&
this->Makefile->IsOn("CMAKE_SHARED_LIBRARY_NAME_WITH_VERSION"))
{
outBase += "-";
outBase += version;
}
}
// Append the suffix.
outSuffix = targetSuffix?targetSuffix:"";
}
void cmTarget::GetLibraryNames(std::string& name,
std::string& soName,
std::string& realName,
std::string& impName,
const char* config)
{
// Get the names based on the real type of the library.
this->GetLibraryNamesInternal(name, soName, realName, impName,
this->GetType(), config);
}
void cmTarget::GetLibraryCleanNames(std::string& staticName,
std::string& sharedName,
std::string& sharedSOName,
std::string& sharedRealName,
std::string& importName,
const char* config)
{
// Get the name as if this were a static library.
std::string soName;
std::string realName;
std::string impName;
this->GetLibraryNamesInternal(staticName, soName, realName, impName,
cmTarget::STATIC_LIBRARY, config);
// Get the names as if this were a shared library.
if(this->GetType() == cmTarget::STATIC_LIBRARY)
{
// Since the real type is static then the user either specified
// STATIC or did not specify a type. In the former case the
// shared library will never be present. In the latter case the
// type will never be MODULE. Either way the only names that
// might have to be cleaned are the shared library names.
this->GetLibraryNamesInternal(sharedName, sharedSOName, sharedRealName,
importName, cmTarget::SHARED_LIBRARY,
config);
}
else
{
// Use the name of the real type of the library (shared or module).
this->GetLibraryNamesInternal(sharedName, sharedSOName, sharedRealName,
importName, this->GetType(), config);
}
}
void cmTarget::GetLibraryNamesInternal(std::string& name,
std::string& soName,
std::string& realName,
std::string& impName,
TargetType type,
const char* config)
{
// Construct the name of the soname flag variable for this language.
const char* ll =
this->GetLinkerLanguage(
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this->Makefile->GetLocalGenerator()->GetGlobalGenerator());
std::string sonameFlag = "CMAKE_SHARED_LIBRARY_SONAME";
if(ll)
{
sonameFlag += "_";
sonameFlag += ll;
}
sonameFlag += "_FLAG";
// Check for library version properties.
const char* version = this->GetProperty("VERSION");
const char* soversion = this->GetProperty("SOVERSION");
if((type != cmTarget::SHARED_LIBRARY && type != cmTarget::MODULE_LIBRARY) ||
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!this->Makefile->GetDefinition(sonameFlag.c_str()))
{
// Versioning is supported only for shared libraries and modules,
// and then only when the platform supports an soname flag.
version = 0;
soversion = 0;
}
if(version && !soversion)
{
// The soversion must be set if the library version is set. Use
// the library version as the soversion.
soversion = version;
}
// Get the components of the library name.
std::string prefix;
std::string base;
std::string suffix;
this->GetFullNameInternal(type, config, false, prefix, base, suffix);
// The library name.
name = prefix+base+suffix;
// The library's soname.
#if defined(__APPLE__)
soName = prefix+base;
#else
soName = name;
#endif
if(soversion)
{
soName += ".";
soName += soversion;
}
#if defined(__APPLE__)
soName += suffix;
#endif
// The library's real name on disk.
#if defined(__APPLE__)
realName = prefix+base;
#else
realName = name;
#endif
if(version)
{
realName += ".";
realName += version;
}
else if(soversion)
{
realName += ".";
realName += soversion;
}
#if defined(__APPLE__)
realName += suffix;
#endif
// The import library name.
if(type == cmTarget::SHARED_LIBRARY)
{
impName = this->GetFullNameInternal(type, config, true);
}
else
{
impName = "";
}
}
void cmTarget::GetExecutableNames(std::string& name,
std::string& realName,
const char* config)
{
// Get the names based on the real type of the executable.
this->GetExecutableNamesInternal(name, realName, this->GetType(), config);
}
void cmTarget::GetExecutableCleanNames(std::string& name,
std::string& realName,
const char* config)
{
// Get the name and versioned name of this executable.
this->GetExecutableNamesInternal(name, realName, cmTarget::EXECUTABLE,
config);
}
void cmTarget::GetExecutableNamesInternal(std::string& name,
std::string& realName,
TargetType type,
const char* config)
{
// This versioning is supported only for executables and then only
// when the platform supports symbolic links.
#if defined(_WIN32) && !defined(__CYGWIN__)
const char* version = 0;
#else
// Check for executable version properties.
const char* version = this->GetProperty("VERSION");
if(type != cmTarget::EXECUTABLE)
{
version = 0;
}
#endif
// Get the components of the executable name.
std::string prefix;
std::string base;
std::string suffix;
this->GetFullNameInternal(type, config, false, prefix, base, suffix);
// The executable name.
name = prefix+base+suffix;
// The executable's real name on disk.
#if defined(__CYGWIN__)
realName = prefix+base;
#else
realName = name;
#endif
if(version)
{
realName += "-";
realName += version;
}
#if defined(__CYGWIN__)
realName += suffix;
#endif
}
//----------------------------------------------------------------------------
void cmTarget::SetPropertyDefault(const char* property,
const char* default_value)
{
// Compute the name of the variable holding the default value.
std::string var = "CMAKE_";
var += property;
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if(const char* value = this->Makefile->GetDefinition(var.c_str()))
{
this->SetProperty(property, value);
}
else if(default_value)
{
this->SetProperty(property, default_value);
}
}
//----------------------------------------------------------------------------
bool cmTarget::HaveBuildTreeRPATH()
{
return (!this->GetPropertyAsBool("SKIP_BUILD_RPATH") &&
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!this->LinkLibraries.empty());
}
//----------------------------------------------------------------------------
bool cmTarget::HaveInstallTreeRPATH()
{
const char* install_rpath = this->GetProperty("INSTALL_RPATH");
return install_rpath && *install_rpath;
}
//----------------------------------------------------------------------------
bool cmTarget::NeedRelinkBeforeInstall()
{
// Only executables and shared libraries can have an rpath and may
// need relinking.
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if(this->TargetTypeValue != cmTarget::EXECUTABLE &&
this->TargetTypeValue != cmTarget::SHARED_LIBRARY &&
this->TargetTypeValue != cmTarget::MODULE_LIBRARY)
{
return false;
}
// If there is no install location this target will not be installed
// and therefore does not need relinking.
if(!this->GetHaveInstallRule())
{
return false;
}
// If skipping all rpaths completely then no relinking is needed.
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if(this->Makefile->IsOn("CMAKE_SKIP_RPATH"))
{
return false;
}
// If building with the install-tree rpath no relinking is needed.
if(this->GetPropertyAsBool("BUILD_WITH_INSTALL_RPATH"))
{
return false;
}
// Check for rpath support on this platform.
if(const char* ll = this->GetLinkerLanguage(
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this->Makefile->GetLocalGenerator()->GetGlobalGenerator()))
{
std::string flagVar = "CMAKE_SHARED_LIBRARY_RUNTIME_";
flagVar += ll;
flagVar += "_FLAG";
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if(!this->Makefile->IsSet(flagVar.c_str()))
{
// There is no rpath support on this platform so nothing needs
// relinking.
return false;
}
}
else
{
// No linker language is known. This error will be reported by
// other code.
return false;
}
// If either a build or install tree rpath is set then the rpath
// will likely change between the build tree and install tree and
// this target must be relinked.
return this->HaveBuildTreeRPATH() || this->HaveInstallTreeRPATH();
}
//----------------------------------------------------------------------------
std::string cmTarget::GetInstallNameDirForBuildTree(const char* config)
{
// If building directly for installation then the build tree install_name
// is the same as the install tree.
if(this->GetPropertyAsBool("BUILD_WITH_INSTALL_RPATH"))
{
return GetInstallNameDirForInstallTree(config);
}
// Use the build tree directory for the target.
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if(this->Makefile->IsOn("CMAKE_PLATFORM_HAS_INSTALLNAME") &&
!this->Makefile->IsOn("CMAKE_SKIP_RPATH") &&
!this->GetPropertyAsBool("SKIP_BUILD_RPATH"))
{
std::string dir = this->GetDirectory(config);
dir += "/";
return dir;
}
else
{
return "";
}
}
//----------------------------------------------------------------------------
std::string cmTarget::GetInstallNameDirForInstallTree(const char*)
{
// Lookup the target property.
const char* install_name_dir = this->GetProperty("INSTALL_NAME_DIR");
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if(this->Makefile->IsOn("CMAKE_PLATFORM_HAS_INSTALLNAME") &&
!this->Makefile->IsOn("CMAKE_SKIP_RPATH") &&
install_name_dir && *install_name_dir)
{
std::string dir = install_name_dir;
dir += "/";
return dir;
}
else
{
return "";
}
}