Genex: Add $<LINK_LANGUAGE:...> and $<LINK_LANG_AND_ID:...>

This MR may help to solve issues #19757 and #18008

Fixes: #19965

1 files changed, 22 insertions, 5 deletions

diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index d81bb3d..9f90cec 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -357,7 +357,6 @@ public:
   };
 
   LinkClosure const* GetLinkClosure(const std::string& config) const;
-  void ComputeLinkClosure(const std::string& config, LinkClosure& lc) const;
 
   cmLinkImplementation const* GetLinkImplementation(
     const std::string& config) const;
@@ -816,6 +815,7 @@ private:
                            std::string& outPrefix, std::string& outBase,
                            std::string& outSuffix) const;
 
+  mutable std::string LinkerLanguage;
   using LinkClosureMapType = std::map<std::string, LinkClosure>;
   mutable LinkClosureMapType LinkClosureMap;
 
@@ -850,6 +850,10 @@ private:
   void CheckPropertyCompatibility(cmComputeLinkInformation& info,
                                   const std::string& config) const;
 
+  void ComputeLinkClosure(const std::string& config, LinkClosure& lc) const;
+  bool ComputeLinkClosure(const std::string& config, LinkClosure& lc,
+                          bool secondPass) const;
+
   struct LinkImplClosure : public std::vector<cmGeneratorTarget const*>
   {
     bool Done = false;
@@ -868,6 +872,17 @@ private:
   std::string GetLinkInterfaceDependentStringAsBoolProperty(
     const std::string& p, const std::string& config) const;
 
+  friend class cmTargetCollectLinkLanguages;
+  cmLinkInterface const* GetLinkInterface(const std::string& config,
+                                          const cmGeneratorTarget* headTarget,
+                                          bool secondPass) const;
+  void ComputeLinkInterface(const std::string& config,
+                            cmOptionalLinkInterface& iface,
+                            const cmGeneratorTarget* head,
+                            bool secondPass) const;
+  cmLinkImplementation const* GetLinkImplementation(const std::string& config,
+                                                    bool secondPass) const;
+
   // Cache import information from properties for each configuration.
   struct ImportInfo
   {
@@ -894,9 +909,10 @@ private:
       the link dependencies of this target.  */
   std::string CheckCMP0004(std::string const& item) const;
 
-  cmLinkInterface const* GetImportLinkInterface(
-    const std::string& config, const cmGeneratorTarget* head,
-    bool usage_requirements_only) const;
+  cmLinkInterface const* GetImportLinkInterface(const std::string& config,
+                                                const cmGeneratorTarget* head,
+                                                bool usage_requirements_only,
+                                                bool secondPass = false) const;
 
   using KindedSourcesMapType = std::map<std::string, KindedSources>;
   mutable KindedSourcesMapType KindedSourcesMap;
@@ -940,7 +956,8 @@ private:
                        const cmGeneratorTarget* headTarget,
                        bool usage_requirements_only,
                        std::vector<cmLinkItem>& items,
-                       bool& hadHeadSensitiveCondition) const;
+                       bool& hadHeadSensitiveCondition,
+                       bool& hadLinkLanguageSensitiveCondition) const;
   void LookupLinkItems(std::vector<std::string> const& names,
                        cmListFileBacktrace const& bt,
                        std::vector<cmLinkItem>& items) const;