Commit ddde61c0 authored by Stephen Kelly's avatar Stephen Kelly
Browse files

Introduce the LINK_ONLY generator expression.

This is an internal expression for use by target_link_libraries
for static libraries.
parent 5aa9731c
......@@ -22,7 +22,7 @@ cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
const GeneratorExpressionContent *content,
cmGeneratorExpressionDAGChecker *parent)
: Parent(parent), Target(target), Property(property),
Content(content), Backtrace(backtrace)
Content(content), Backtrace(backtrace), TransitivePropertiesOnly(false)
{
const cmGeneratorExpressionDAGChecker *top = this;
const cmGeneratorExpressionDAGChecker *p = this->Parent;
......@@ -138,6 +138,20 @@ cmGeneratorExpressionDAGChecker::checkGraph() const
return DAG;
}
//----------------------------------------------------------------------------
bool cmGeneratorExpressionDAGChecker::GetTransitivePropertiesOnly()
{
const cmGeneratorExpressionDAGChecker *top = this;
const cmGeneratorExpressionDAGChecker *parent = this->Parent;
while (parent)
{
top = parent;
parent = parent->Parent;
}
return top->TransitivePropertiesOnly;
}
//----------------------------------------------------------------------------
bool cmGeneratorExpressionDAGChecker::EvaluatingLinkLibraries(const char *tgt)
{
......
......@@ -54,6 +54,10 @@ struct cmGeneratorExpressionDAGChecker
CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(DECLARE_TRANSITIVE_PROPERTY_METHOD)
bool GetTransitivePropertiesOnly();
void SetTransitivePropertiesOnly()
{ this->TransitivePropertiesOnly = true; }
private:
Result checkGraph() const;
......@@ -65,6 +69,7 @@ private:
const GeneratorExpressionContent * const Content;
const cmListFileBacktrace Backtrace;
Result CheckResult;
bool TransitivePropertiesOnly;
};
#endif
......@@ -491,6 +491,24 @@ static const struct VersionEqualNode : public cmGeneratorExpressionNode
}
} versionEqualNode;
//----------------------------------------------------------------------------
static const struct LinkOnlyNode : public cmGeneratorExpressionNode
{
LinkOnlyNode() {}
std::string Evaluate(const std::vector<std::string> &parameters,
cmGeneratorExpressionContext *,
const GeneratorExpressionContent *,
cmGeneratorExpressionDAGChecker *dagChecker) const
{
if(!dagChecker->GetTransitivePropertiesOnly())
{
return parameters.front();
}
return "";
}
} linkOnlyNode;
//----------------------------------------------------------------------------
static const struct ConfigurationNode : public cmGeneratorExpressionNode
{
......@@ -1396,6 +1414,8 @@ cmGeneratorExpressionNode* GetNode(const std::string &identifier)
return &installPrefixNode;
else if (identifier == "JOIN")
return &joinNode;
else if (identifier == "LINK_ONLY")
return &linkOnlyNode;
return 0;
}
......
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