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Implement interprocedural optimization for GNU compilers

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Honor the `INTERPROCEDURAL_OPTIMIZATION` target property for GNU
compilers by activating their link-time-optimization (LTO) flags.
This commit is contained in:
Ruslan Baratov
2017-03-28 14:47:42 +08:00
committed by Brad King
parent 1588a577d1
commit dfa8263f4b
8 changed files with 103 additions and 14 deletions
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Source/cmGeneratorTarget.cxx
+16 -7
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@@ -2466,19 +2466,28 @@ void cmGeneratorTarget::GetAppleArchs(const std::string& config,
}
}
//----------------------------------------------------------------------------
std::string cmGeneratorTarget::GetFeatureSpecificLinkRuleVariable(
std::string const& var, std::string const& config) const
{
if (this->IsIPOEnabled(config)) {
std::string varIPO = var + "_IPO";
if (this->Makefile->IsDefinitionSet(varIPO)) {
return varIPO;
}
}
return var;
}
//----------------------------------------------------------------------------
std::string cmGeneratorTarget::GetCreateRuleVariable(
std::string const& lang, std::string const& config) const
{
switch (this->GetType()) {
case cmStateEnums::STATIC_LIBRARY: {
std::string var = "CMAKE_" + lang + "_CREATE_STATIC_LIBRARY";
if (this->IsIPOEnabled(config)) {
std::string varIPO = var + "_IPO";
if (this->Makefile->GetDefinition(varIPO)) {
return varIPO;
}
}
return var;
return this->GetFeatureSpecificLinkRuleVariable(var, config);
}
case cmStateEnums::SHARED_LIBRARY:
return "CMAKE_" + lang + "_CREATE_SHARED_LIBRARY";