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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmTargetLinkLibrariesCommand.h"
const char* cmTargetLinkLibrariesCommand::LinkLibraryTypeNames[3] =
{
"general",
"debug",
"optimized"
};
// cmTargetLinkLibrariesCommand
bool cmTargetLinkLibrariesCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
// must have one argument
if(args.size() < 1)
{
this->SetError("called with incorrect number of arguments");
return false;
}
// but we might not have any libs after variable expansion
if(args.size() < 2)
{
return true;
}
// Lookup the target for which libraries are specified.
this->Target =
this->Makefile->GetCMakeInstance()
->GetGlobalGenerator()->FindTarget(0, args[0].c_str());
if(!this->Target)
{
cmOStringStream e;
e << "Cannot specify link libraries for target \"" << args[0] << "\" "
<< "which is not built by this project.";
this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
cmSystemTools::SetFatalErrorOccured();
return true;
}
// Keep track of link configuration specifiers.
cmTarget::LinkLibraryType llt = cmTarget::GENERAL;
bool haveLLT = false;
// Start with primary linking and switch to link interface
// specification when the keyword is encountered.
this->DoingInterface = false;
// add libraries, nothe that there is an optional prefix
// of debug and optimized than can be used
for(unsigned int i=1; i < args.size(); ++i)
{
if(args[i] == "LINK_INTERFACE_LIBRARIES")
{
this->DoingInterface = true;
if(i != 1)
{
this->Makefile->IssueMessage(
cmake::FATAL_ERROR,
"The LINK_INTERFACE_LIBRARIES option must appear as the second "
"argument, just after the target name."
);
return true;
}
}
else if(args[i] == "debug")
{
if(haveLLT)
{
this->LinkLibraryTypeSpecifierWarning(llt, cmTarget::DEBUG);
}
llt = cmTarget::DEBUG;
haveLLT = true;
}
else if(args[i] == "optimized")
{
if(haveLLT)
{
this->LinkLibraryTypeSpecifierWarning(llt, cmTarget::OPTIMIZED);
}
llt = cmTarget::OPTIMIZED;
haveLLT = true;
}
else if(args[i] == "general")
{
if(haveLLT)
{
this->LinkLibraryTypeSpecifierWarning(llt, cmTarget::GENERAL);
}
llt = cmTarget::GENERAL;
haveLLT = true;
}
else if(haveLLT)
{
// The link type was specified by the previous argument.
haveLLT = false;
this->HandleLibrary(args[i].c_str(), llt);
}
else
{
// Lookup old-style cache entry if type is unspecified. So if you
// do a target_link_libraries(foo optimized bar) it will stay optimized
// and not use the lookup. As there maybe the case where someone has
// specifed that a library is both debug and optimized. (this check is
// only there for backwards compatibility when mixing projects built
// with old versions of CMake and new)
llt = cmTarget::GENERAL;
std::string linkType = args[0];
linkType += "_LINK_TYPE";
const char* linkTypeString =
this->Makefile->GetDefinition( linkType.c_str() );
if(linkTypeString)
{
if(strcmp(linkTypeString, "debug") == 0)
{
llt = cmTarget::DEBUG;
}
if(strcmp(linkTypeString, "optimized") == 0)
{
llt = cmTarget::OPTIMIZED;
}
}
this->HandleLibrary(args[i].c_str(), llt);
}
}
// Make sure the last argument was not a library type specifier.
if(haveLLT)
{
cmOStringStream e;
e << "The \"" << this->LinkLibraryTypeNames[llt]
<< "\" argument must be followed by a library.";
this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
cmSystemTools::SetFatalErrorOccured();
}
// If the INTERFACE option was given, make sure the
// LINK_INTERFACE_LIBRARIES property exists. This allows the
// command to be used to specify an empty link interface.
if(this->DoingInterface &&
!this->Target->GetProperty("LINK_INTERFACE_LIBRARIES"))
{
this->Target->SetProperty("LINK_INTERFACE_LIBRARIES", "");
}
return true;
}
//----------------------------------------------------------------------------
void
cmTargetLinkLibrariesCommand
::LinkLibraryTypeSpecifierWarning(int left, int right)
{
cmOStringStream w;
w << "Link library type specifier \""
<< this->LinkLibraryTypeNames[left] << "\" is followed by specifier \""
<< this->LinkLibraryTypeNames[right] << "\" instead of a library name. "
<< "The first specifier will be ignored.";
this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, w.str());
}
//----------------------------------------------------------------------------
void
cmTargetLinkLibrariesCommand::HandleLibrary(const char* lib,
cmTarget::LinkLibraryType llt)
{
// Handle normal case first.
if(!this->DoingInterface)
{
this->Makefile
->AddLinkLibraryForTarget(this->Target->GetName(), lib, llt);
return;
}
// Get the list of configurations considered to be DEBUG.
std::vector<std::string> const& debugConfigs =
this->Makefile->GetCMakeInstance()->GetDebugConfigs();
std::string prop;
// Include this library in the link interface for the target.
if(llt == cmTarget::DEBUG || llt == cmTarget::GENERAL)
{
// Put in the DEBUG configuration interfaces.
for(std::vector<std::string>::const_iterator i = debugConfigs.begin();
i != debugConfigs.end(); ++i)
{
prop = "LINK_INTERFACE_LIBRARIES_";
prop += *i;
this->Target->AppendProperty(prop.c_str(), lib);
}
}
if(llt == cmTarget::OPTIMIZED || llt == cmTarget::GENERAL)
{
// Put in the non-DEBUG configuration interfaces.
this->Target->AppendProperty("LINK_INTERFACE_LIBRARIES", lib);
// Make sure the DEBUG configuration interfaces exist so that the
// general one will not be used as a fall-back.
for(std::vector<std::string>::const_iterator i = debugConfigs.begin();
i != debugConfigs.end(); ++i)
{
prop = "LINK_INTERFACE_LIBRARIES_";
prop += *i;
if(!this->Target->GetProperty(prop.c_str()))
{
this->Target->SetProperty(prop.c_str(), "");
}
}
}
}
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