mirror of
https://github.com/reactos/CMake.git
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Genex: Add $<TARGET_GENEX_EVAL:...> and $<GENEX_EVAL:...>
Fixes: #17884
This commit is contained in:
Marc Chevrier
parent
1f372ac4e5
commit
4d15046edd
@ -305,3 +305,42 @@ Available output expressions are:
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Content of ``...`` converted to shell path style. For example, slashes are
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converted to backslashes in Windows shells and drive letters are converted
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to posix paths in MSYS shells. The ``...`` must be an absolute path.
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``$<GENEX_EVAL:...>``
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Content of ``...`` evaluated as a generator expression in the current
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context. This enables consumption of generator expressions
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whose evaluation results itself in generator expressions.
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``$<TARGET_GENEX_EVAL:tgt,...>``
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Content of ``...`` evaluated as a generator expression in the context of
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``tgt`` target. This enables consumption of custom target properties that
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themselves contain generator expressions.
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Having the capability to evaluate generator expressions is very useful when
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you want to manage custom properties supporting generator expressions.
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For example:
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.. code-block:: cmake
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add_library(foo ...)
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set_property(TARGET foo PROPERTY
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CUSTOM_KEYS $<$<CONFIG:DEBUG>:FOO_EXTRA_THINGS>
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)
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add_custom_target(printFooKeys
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COMMAND ${CMAKE_COMMAND} -E echo $<TARGET_PROPERTY:foo,CUSTOM_KEYS>
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)
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This naive implementation of the ``printFooKeys`` custom command is wrong
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because ``CUSTOM_KEYS`` target property is not evaluated and the content
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is passed as is (i.e. ``$<$<CONFIG:DEBUG>:FOO_EXTRA_THINGS>``).
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To have the expected result (i.e. ``FOO_EXTRA_THINGS`` if config is
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``Debug``), it is required to evaluate the output of
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``$<TARGET_PROPERTY:foo,CUSTOM_KEYS>``:
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.. code-block:: cmake
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add_custom_target(printFooKeys
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COMMAND ${CMAKE_COMMAND} -E
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echo $<TARGET_GENEX_EVAL:foo,$<TARGET_PROPERTY:foo,CUSTOM_KEYS>>
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)
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7
Help/release/dev/genex-GENEX_EVAL.rst
Normal file
7
Help/release/dev/genex-GENEX_EVAL.rst
Normal file
@ -0,0 +1,7 @@
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genex-GENEX_EVAL
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----------------
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* New ``$<GENEX_EVAL:...>`` and ``$<TARGET_GENEX_EVAL:target,...>``
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:manual:`generator expression <cmake-generator-expressions(7)>`
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had been added to enable consumption of generator expressions whose
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evaluation results itself in generator expressions.
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@ -154,6 +154,18 @@ bool cmGeneratorExpressionDAGChecker::GetTransitivePropertiesOnly()
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return top->TransitivePropertiesOnly;
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}
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bool cmGeneratorExpressionDAGChecker::EvaluatingGenexExpression()
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{
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const cmGeneratorExpressionDAGChecker* top = this;
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const cmGeneratorExpressionDAGChecker* parent = this->Parent;
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while (parent) {
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top = parent;
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parent = parent->Parent;
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}
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return top->Property == "TARGET_GENEX_EVAL" || top->Property == "GENEX_EVAL";
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}
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bool cmGeneratorExpressionDAGChecker::EvaluatingLinkLibraries(const char* tgt)
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{
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const cmGeneratorExpressionDAGChecker* top = this;
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@ -61,6 +61,7 @@ struct cmGeneratorExpressionDAGChecker
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void ReportError(cmGeneratorExpressionContext* context,
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const std::string& expr);
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bool EvaluatingGenexExpression();
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bool EvaluatingLinkLibraries(const char* tgt = nullptr);
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#define DECLARE_TRANSITIVE_PROPERTY_METHOD(METHOD) bool METHOD() const;
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@ -365,6 +365,113 @@ static const struct TargetNameIfExistsNode : public cmGeneratorExpressionNode
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}
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} targetNameIfExistsNode;
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struct GenexEvaluator : public cmGeneratorExpressionNode
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{
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GenexEvaluator() {}
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protected:
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std::string EvaluateExpression(
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const std::string& genexOperator, const std::string& expression,
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cmGeneratorExpressionContext* context,
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const GeneratorExpressionContent* content,
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cmGeneratorExpressionDAGChecker* dagCheckerParent) const
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{
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if (context->HeadTarget) {
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cmGeneratorExpressionDAGChecker dagChecker(
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context->Backtrace, context->HeadTarget->GetName(), genexOperator,
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content, dagCheckerParent);
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switch (dagChecker.Check()) {
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case cmGeneratorExpressionDAGChecker::SELF_REFERENCE:
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case cmGeneratorExpressionDAGChecker::CYCLIC_REFERENCE: {
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dagChecker.ReportError(context, content->GetOriginalExpression());
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return std::string();
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}
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case cmGeneratorExpressionDAGChecker::ALREADY_SEEN:
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case cmGeneratorExpressionDAGChecker::DAG:
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break;
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}
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return this->EvaluateDependentExpression(
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expression, context->LG, context, context->HeadTarget,
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context->CurrentTarget, &dagChecker);
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}
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return this->EvaluateDependentExpression(
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expression, context->LG, context, context->HeadTarget,
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context->CurrentTarget, dagCheckerParent);
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}
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};
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static const struct TargetGenexEvalNode : public GenexEvaluator
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{
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TargetGenexEvalNode() {}
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int NumExpectedParameters() const override { return 2; }
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bool AcceptsArbitraryContentParameter() const override { return true; }
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std::string Evaluate(
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const std::vector<std::string>& parameters,
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cmGeneratorExpressionContext* context,
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const GeneratorExpressionContent* content,
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cmGeneratorExpressionDAGChecker* dagCheckerParent) const override
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{
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const std::string& targetName = parameters.front();
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if (targetName.empty() ||
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!cmGeneratorExpression::IsValidTargetName(targetName)) {
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reportError(context, content->GetOriginalExpression(),
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"$<TARGET_GENEX_EVAL:tgt, ...> expression requires a "
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"non-empty valid target name.");
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return std::string();
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}
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const auto* target = context->LG->FindGeneratorTargetToUse(targetName);
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if (!target) {
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std::ostringstream e;
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e << "$<TARGET_GENEX_EVAL:tgt, ...> target \"" << targetName
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<< "\" not found.";
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reportError(context, content->GetOriginalExpression(), e.str());
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return std::string();
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}
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const std::string& expression = parameters[1];
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if (expression.empty()) {
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return expression;
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}
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cmGeneratorExpressionContext targetContext(
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context->LG, context->Config, context->Quiet, target, target,
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context->EvaluateForBuildsystem, context->Backtrace, context->Language);
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return this->EvaluateExpression("TARGET_GENEX_EVAL", expression,
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&targetContext, content, dagCheckerParent);
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}
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} targetGenexEvalNode;
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static const struct GenexEvalNode : public GenexEvaluator
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{
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GenexEvalNode() {}
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int NumExpectedParameters() const override { return 1; }
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bool AcceptsArbitraryContentParameter() const override { return true; }
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std::string Evaluate(
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const std::vector<std::string>& parameters,
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cmGeneratorExpressionContext* context,
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const GeneratorExpressionContent* content,
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cmGeneratorExpressionDAGChecker* dagCheckerParent) const override
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{
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const std::string& expression = parameters[0];
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if (expression.empty()) {
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return expression;
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}
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return this->EvaluateExpression("GENEX_EVAL", expression, context, content,
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dagCheckerParent);
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}
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} genexEvalNode;
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static const struct LowerCaseNode : public cmGeneratorExpressionNode
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{
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LowerCaseNode() {}
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@ -1124,7 +1231,9 @@ static const struct TargetPropertyNode : public cmGeneratorExpressionNode
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const char* prop = target->GetProperty(propertyName);
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if (dagCheckerParent) {
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if (dagCheckerParent->EvaluatingLinkLibraries()) {
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if (dagCheckerParent->EvaluatingGenexExpression()) {
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// No check required.
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} else if (dagCheckerParent->EvaluatingLinkLibraries()) {
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#define TRANSITIVE_PROPERTY_COMPARE(PROPERTY) \
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(#PROPERTY == propertyName || "INTERFACE_" #PROPERTY == propertyName) ||
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if (CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(
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@ -1933,6 +2042,8 @@ const cmGeneratorExpressionNode* cmGeneratorExpressionNode::GetNode(
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nodeMap["TARGET_POLICY"] = &targetPolicyNode;
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nodeMap["TARGET_EXISTS"] = &targetExistsNode;
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nodeMap["TARGET_NAME_IF_EXISTS"] = &targetNameIfExistsNode;
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nodeMap["TARGET_GENEX_EVAL"] = &targetGenexEvalNode;
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nodeMap["GENEX_EVAL"] = &genexEvalNode;
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nodeMap["BUILD_INTERFACE"] = &buildInterfaceNode;
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nodeMap["INSTALL_INTERFACE"] = &installInterfaceNode;
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nodeMap["INSTALL_PREFIX"] = &installPrefixNode;
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@ -0,0 +1,6 @@
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file(READ "${RunCMake_TEST_BINARY_DIR}/GENEX_EVAL-generated.txt" content)
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set(expected "BEFORE_PROPERTY1_AFTER")
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if(NOT content STREQUAL expected)
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set(RunCMake_TEST_FAILED "actual content:\n [[${content}]]\nbut expected:\n [[${expected}]]")
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endif()
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@ -0,0 +1 @@
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1
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@ -0,0 +1,26 @@
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^CMake Error at GENEX_EVAL-recursion1.cmake:7 \(add_custom_target\):
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Error evaluating generator expression:
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\$<GENEX_EVAL:\$<TARGET_PROPERTY:CUSTOM_PROPERTY>>
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Dependency loop found.
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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CMake Error at GENEX_EVAL-recursion1.cmake:7 \(add_custom_target\):
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Loop step 1
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\$<GENEX_EVAL:\$<TARGET_PROPERTY:CUSTOM_PROPERTY>>
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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CMake Error at GENEX_EVAL-recursion1.cmake:7 \(add_custom_target\):
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Loop step 2
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\$<TARGET_GENEX_EVAL:recursion,\$<TARGET_PROPERTY:recursion,CUSTOM_PROPERTY>>
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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@ -0,0 +1,9 @@
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enable_language(C)
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add_library (recursion SHARED empty.c)
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set_property (TARGET recursion PROPERTY CUSTOM_PROPERTY "$<GENEX_EVAL:$<TARGET_PROPERTY:CUSTOM_PROPERTY>>")
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add_custom_target (drive
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COMMAND echo "$<TARGET_GENEX_EVAL:recursion,$<TARGET_PROPERTY:recursion,CUSTOM_PROPERTY>>"
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DEPENDS recursion)
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@ -0,0 +1 @@
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1
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@ -0,0 +1,26 @@
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^CMake Error at GENEX_EVAL-recursion2.cmake:8 \(add_custom_target\):
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Error evaluating generator expression:
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\$<GENEX_EVAL:\$<TARGET_PROPERTY:CUSTOM_PROPERTY1>>
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Dependency loop found.
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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CMake Error at GENEX_EVAL-recursion2.cmake:8 \(add_custom_target\):
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Loop step 1
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\$<GENEX_EVAL:\$<TARGET_PROPERTY:CUSTOM_PROPERTY2>>
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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CMake Error at GENEX_EVAL-recursion2.cmake:8 \(add_custom_target\):
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Loop step 2
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\$<TARGET_GENEX_EVAL:recursion,\$<TARGET_PROPERTY:recursion,CUSTOM_PROPERTY1>>
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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@ -0,0 +1,10 @@
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enable_language(C)
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add_library(recursion SHARED empty.c)
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set_property (TARGET recursion PROPERTY CUSTOM_PROPERTY1 "$<GENEX_EVAL:$<TARGET_PROPERTY:CUSTOM_PROPERTY2>>")
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set_property (TARGET recursion PROPERTY CUSTOM_PROPERTY2 "$<GENEX_EVAL:$<TARGET_PROPERTY:CUSTOM_PROPERTY1>>")
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add_custom_target (drive
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COMMAND echo "$<TARGET_GENEX_EVAL:recursion,$<TARGET_PROPERTY:recursion,CUSTOM_PROPERTY1>>"
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DEPENDS recursion)
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11
Tests/RunCMake/GeneratorExpression/GENEX_EVAL.cmake
Normal file
11
Tests/RunCMake/GeneratorExpression/GENEX_EVAL.cmake
Normal file
@ -0,0 +1,11 @@
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cmake_policy(VERSION 3.11)
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enable_language(C)
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add_library (example SHARED empty.c)
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set_property (TARGET example PROPERTY CUSTOM_PROPERTY1 "PROPERTY1")
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set_property (TARGET example PROPERTY CUSTOM_PROPERTY2 "$<TARGET_PROPERTY:CUSTOM_PROPERTY1>")
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set_property (TARGET example PROPERTY CUSTOM_PROPERTY3 "$<GENEX_EVAL:BEFORE_$<TARGET_PROPERTY:CUSTOM_PROPERTY2>_AFTER>")
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file(GENERATE OUTPUT "GENEX_EVAL-generated.txt" CONTENT "$<TARGET_GENEX_EVAL:example,$<TARGET_PROPERTY:example,CUSTOM_PROPERTY3>>")
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@ -42,6 +42,15 @@ run_cmake(TARGET_NAME_IF_EXISTS-no-arg)
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run_cmake(TARGET_NAME_IF_EXISTS-empty-arg)
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run_cmake(TARGET_NAME_IF_EXISTS)
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run_cmake(TARGET_NAME_IF_EXISTS-not-a-target)
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run_cmake(TARGET_GENEX_EVAL-no-arg)
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run_cmake(TARGET_GENEX_EVAL-no-target)
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run_cmake(TARGET_GENEX_EVAL-non-valid-target)
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run_cmake(TARGET_GENEX_EVAL-recursion1)
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run_cmake(TARGET_GENEX_EVAL-recursion2)
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run_cmake(TARGET_GENEX_EVAL)
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run_cmake(GENEX_EVAL-recursion1)
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run_cmake(GENEX_EVAL-recursion2)
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run_cmake(GENEX_EVAL)
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run_cmake(ImportedTarget-TARGET_BUNDLE_DIR)
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run_cmake(ImportedTarget-TARGET_BUNDLE_CONTENT_DIR)
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@ -0,0 +1,6 @@
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file(READ "${RunCMake_TEST_BINARY_DIR}/TARGET_GENEX_EVAL-generated.txt" content)
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set(expected "BEFORE_PROPERTY1_AFTER")
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if(NOT content STREQUAL expected)
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set(RunCMake_TEST_FAILED "actual content:\n [[${content}]]\nbut expected:\n [[${expected}]]")
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endif()
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@ -0,0 +1 @@
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1
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@ -0,0 +1,9 @@
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^CMake Error at TARGET_GENEX_EVAL-no-arg.cmake:4 \(add_custom_command\):
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Error evaluating generator expression:
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\$<TARGET_GENEX_EVAL:>
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\$<TARGET_GENEX_EVAL> expression requires 2 comma separated parameters, but
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got 1 instead.
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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@ -0,0 +1,7 @@
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cmake_policy(VERSION 3.11)
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add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/copied_file.c"
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COMMAND "${CMAKE_COMMAND}" -E copy "${CMAKE_CURRENT_SOURCE_DIR}/empty.c" "${CMAKE_CURRENT_BINARY_DIR}/copied_file$<TARGET_GENEX_EVAL:>.c"
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)
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add_custom_target(drive DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/copied_file.c")
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@ -0,0 +1 @@
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1
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@ -0,0 +1,9 @@
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^CMake Error at TARGET_GENEX_EVAL-no-target.cmake:2 \(add_custom_command\):
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Error evaluating generator expression:
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\$<TARGET_GENEX_EVAL:,>
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\$<TARGET_GENEX_EVAL:tgt, ...> expression requires a non-empty valid target
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name.
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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@ -0,0 +1,5 @@
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add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/copied_file.c"
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COMMAND "${CMAKE_COMMAND}" -E copy "${CMAKE_CURRENT_SOURCE_DIR}/empty.c" "${CMAKE_CURRENT_BINARY_DIR}/copied_file$<TARGET_GENEX_EVAL:,>.c"
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)
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add_custom_target(drive DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/copied_file.c")
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@ -0,0 +1 @@
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1
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@ -0,0 +1,8 @@
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^CMake Error at TARGET_GENEX_EVAL-non-valid-target.cmake:2 \(add_custom_command\):
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Error evaluating generator expression:
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\$<TARGET_GENEX_EVAL:bad-target,>
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\$<TARGET_GENEX_EVAL:tgt, ...> target "bad-target" not found.
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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@ -0,0 +1,5 @@
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add_custom_command(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/copied_file.c"
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COMMAND "${CMAKE_COMMAND}" -E copy "${CMAKE_CURRENT_SOURCE_DIR}/empty.c" "${CMAKE_CURRENT_BINARY_DIR}/copied_file$<TARGET_GENEX_EVAL:bad-target,>.c"
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)
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add_custom_target(drive DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/copied_file.c")
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@ -0,0 +1 @@
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1
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@ -0,0 +1,9 @@
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^CMake Error at TARGET_GENEX_EVAL-recursion1.cmake:7 \(add_custom_target\):
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Error evaluating generator expression:
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\$<TARGET_GENEX_EVAL:recursion,\$<TARGET_PROPERTY:CUSTOM_PROPERTY>>
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Self reference on target "recursion".
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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@ -0,0 +1,9 @@
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enable_language(C)
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add_library (recursion SHARED empty.c)
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set_property (TARGET recursion PROPERTY CUSTOM_PROPERTY "$<TARGET_GENEX_EVAL:recursion,$<TARGET_PROPERTY:CUSTOM_PROPERTY>>")
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add_custom_target (drive
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COMMAND echo "$<TARGET_GENEX_EVAL:recursion,$<TARGET_PROPERTY:recursion,CUSTOM_PROPERTY>>"
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DEPENDS recursion)
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@ -0,0 +1 @@
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1
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@ -0,0 +1,26 @@
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^CMake Error at TARGET_GENEX_EVAL-recursion2.cmake:10 \(add_custom_target\):
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Error evaluating generator expression:
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\$<TARGET_GENEX_EVAL:recursion1,\$<TARGET_PROPERTY:recursion1,CUSTOM_PROPERTY1>>
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Dependency loop found.
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Call Stack \(most recent call first\):
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CMakeLists.txt:3 \(include\)
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|
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CMake Error at TARGET_GENEX_EVAL-recursion2.cmake:10 \(add_custom_target\):
|
||||
Loop step 1
|
||||
|
||||
\$<TARGET_GENEX_EVAL:recursion2,\$<TARGET_PROPERTY:recursion2,CUSTOM_PROPERTY2>>
|
||||
|
||||
Call Stack \(most recent call first\):
|
||||
CMakeLists.txt:3 \(include\)
|
||||
|
||||
|
||||
CMake Error at TARGET_GENEX_EVAL-recursion2.cmake:10 \(add_custom_target\):
|
||||
Loop step 2
|
||||
|
||||
\$<TARGET_GENEX_EVAL:recursion1,\$<TARGET_PROPERTY:recursion1,CUSTOM_PROPERTY1>>
|
||||
|
||||
Call Stack \(most recent call first\):
|
||||
CMakeLists.txt:3 \(include\)
|
||||
@ -0,0 +1,12 @@
|
||||
|
||||
enable_language(C)
|
||||
|
||||
add_library (recursion1 SHARED empty.c)
|
||||
set_property (TARGET recursion1 PROPERTY CUSTOM_PROPERTY1 "$<TARGET_GENEX_EVAL:recursion2,$<TARGET_PROPERTY:recursion2,CUSTOM_PROPERTY2>>")
|
||||
|
||||
add_library (recursion2 SHARED empty.c)
|
||||
set_property (TARGET recursion2 PROPERTY CUSTOM_PROPERTY2 "$<TARGET_GENEX_EVAL:recursion1,$<TARGET_PROPERTY:recursion1,CUSTOM_PROPERTY1>>")
|
||||
|
||||
add_custom_target (drive
|
||||
COMMAND echo "$<TARGET_GENEX_EVAL:recursion1,$<TARGET_PROPERTY:recursion1,CUSTOM_PROPERTY1>>"
|
||||
DEPENDS recursion)
|
||||
10
Tests/RunCMake/GeneratorExpression/TARGET_GENEX_EVAL.cmake
Normal file
10
Tests/RunCMake/GeneratorExpression/TARGET_GENEX_EVAL.cmake
Normal file
@ -0,0 +1,10 @@
|
||||
|
||||
cmake_policy(VERSION 3.11)
|
||||
|
||||
enable_language(C)
|
||||
|
||||
add_library (example SHARED empty.c)
|
||||
set_property (TARGET example PROPERTY CUSTOM_PROPERTY1 "PROPERTY1")
|
||||
set_property (TARGET example PROPERTY CUSTOM_PROPERTY2 "BEFORE_$<TARGET_PROPERTY:CUSTOM_PROPERTY1>_AFTER")
|
||||
|
||||
file(GENERATE OUTPUT "TARGET_GENEX_EVAL-generated.txt" CONTENT "$<TARGET_GENEX_EVAL:example,$<TARGET_PROPERTY:example,CUSTOM_PROPERTY2>>")
|
||||
Loading…
Reference in New Issue
Block a user