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Invalidate target link info when necessary 

In cmTarget we compute the link implementation, link interface, and link
closure structures on-demand and cache the results.  This commit teaches
cmTarget to invalidate results after a LINK_INTERFACE_* property changes
or a new link library is added.  We also clear the results at the end of
the Configure step to ensure the Generate step uses up-to-date results.
This commit is contained in:
Brad King 2009-10-05 09:06:59 -04:00
parent daa2f3aa41
commit 0fb5b2c88c
2 changed files with 21 additions and 0 deletions
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19
Source/cmTarget.cxx
View File

@ -1030,10 +1030,24 @@ void cmTarget::SetMakefile(cmMakefile* mf)
//----------------------------------------------------------------------------
void cmTarget::FinishConfigure()
{
// Erase any cached link information that might have been comptued
// on-demand during the configuration. This ensures that build
// system generation uses up-to-date information even if other cache
// invalidation code in this source file is buggy.
this->ClearLinkMaps();
// Do old-style link dependency analysis.
this->AnalyzeLibDependencies(*this->Makefile);
}
//----------------------------------------------------------------------------
void cmTarget::ClearLinkMaps()
{
this->Internal->LinkImplMap.clear();
this->Internal->LinkInterfaceMap.clear();
this->Internal->LinkClosureMap.clear();
}
//----------------------------------------------------------------------------
cmListFileBacktrace const& cmTarget::GetBacktrace() const
{
@ -1656,6 +1670,7 @@ void cmTarget::AddLinkLibrary(cmMakefile& mf,
tmp.second = llt;
this->LinkLibraries.push_back( tmp );
this->OriginalLinkLibraries.push_back(tmp);
this->ClearLinkMaps();
// Add the explicit dependency information for this target. This is
// simply a set of libraries separated by ";". There should always
@ -2023,6 +2038,10 @@ void cmTarget::MaybeInvalidatePropertyCache(const char* prop)
{
this->Internal->ImportInfoMap.clear();
}
if(!this->IsImported() && strncmp(prop, "LINK_INTERFACE_", 15) == 0)
{
this->ClearLinkMaps();
}
}
//----------------------------------------------------------------------------

2
Source/cmTarget.h
View File

@ -567,6 +567,8 @@ private:
LinkImplementation& impl);
void ComputeLinkClosure(const char* config, LinkClosure& lc);
void ClearLinkMaps();
void MaybeInvalidatePropertyCache(const char* prop);
// The cmMakefile instance that owns this target. This should