ENH: Added target property INSTALL_RPATH_USE_LINK_PATH to append the linker search path directories not inside the project to the INSTALL_RPATH automatically. The property is initialized by the variable CMAKE_INSTALL_RPATH_USE_LINK_PATH when the target is created.

Source/cmLocalGenerator.cxx

@@ -1418,6 +1418,9 @@ void cmLocalGenerator::OutputLinkLibraries(std::ostream& fout,
     outputRuntime && tgt.HaveInstallTreeRPATH() && linking_for_install;
   bool use_build_rpath =
     outputRuntime && tgt.HaveBuildTreeRPATH() && !linking_for_install;
+  bool use_link_rpath =
+    outputRuntime && linking_for_install &&
+    tgt.GetPropertyAsBool("INSTALL_RPATH_USE_LINK_PATH");
 
   // Construct the RPATH.
   std::vector<std::string> runtimeDirs;
@@ -1454,13 +1457,29 @@ void cmLocalGenerator::OutputLinkLibraries(std::ostream& fout,
          && libDir->find("${") == std::string::npos)
         {
         linkLibs += libPathFlag;
+        linkLibs += fullLibPath;
+        linkLibs += " ";
+
+        // Put this directory in the rpath if using build-tree rpath
+        // support or if using the link path as an rpath.
         if(use_build_rpath)
           {
-          runtimeDirs.push_back( fullLibPath );
+          runtimeDirs.push_back(fullLibPath);
+          }
+        else if(use_link_rpath)
+          {
+          // Do not add any path inside the source or build tree.
+          const char* topSourceDir = this->Makefile->GetHomeDirectory();
+          const char* topBinaryDir = this->Makefile->GetHomeOutputDirectory();
+          if(!cmSystemTools::ComparePath(libDir->c_str(), topSourceDir) &&
+             !cmSystemTools::ComparePath(libDir->c_str(), topBinaryDir) &&
+             !cmSystemTools::IsSubDirectory(libDir->c_str(), topSourceDir) &&
+             !cmSystemTools::IsSubDirectory(libDir->c_str(), topBinaryDir))
+            {
+            runtimeDirs.push_back(fullLibPath);
+            }
           }
         }
-      linkLibs += fullLibPath;
-      linkLibs += " ";
       }
     }
 

Source/cmSetTargetPropertiesCommand.h

@@ -112,6 +112,9 @@ public:
         "There are a few properties used to specify RPATH rules. "
         "INSTALL_RPATH is a semicolon-separated list specifying the rpath "
         "to use in installed targets (for platforms that support it). "
+        "INSTALL_RPATH_USE_LINK_PATH is a boolean that if set to true will "
+        "append directories in the linker search path and outside the project "
+        "to the INSTALL_RPATH. "
         "SKIP_BUILD_RPATH is a boolean specifying whether to skip automatic "
         "generation of an rpath allowing the target to run from the "
         "build tree. "
@@ -122,7 +125,8 @@ public:
         "directory portion of the \"install_name\" field of shared libraries "
         "on Mac OSX to use in the installed targets. "
         "When the target is created the values of "
-        "the variables CMAKE_INSTALL_RPATH, CMAKE_SKIP_BUILD_RPATH, "
+        "the variables CMAKE_INSTALL_RPATH, "
+        "CMAKE_INSTALL_RPATH_USE_LINK_PATH, CMAKE_SKIP_BUILD_RPATH, "
         "CMAKE_BUILD_WITH_INSTALL_RPATH, and CMAKE_INSTALL_NAME_DIR "
         "are used to initialize these properties.\n"
         "PROJECT_LABEL can be used to change the name of "

Source/cmTarget.cxx

@@ -63,6 +63,7 @@ void cmTarget::SetMakefile(cmMakefile* mf)
   // Setup default property values.
   this->SetPropertyDefault("INSTALL_NAME_DIR", "");
   this->SetPropertyDefault("INSTALL_RPATH", "");
+  this->SetPropertyDefault("INSTALL_RPATH_USE_LINK_PATH", "OFF");
   this->SetPropertyDefault("SKIP_BUILD_RPATH", "OFF");
   this->SetPropertyDefault("BUILD_WITH_INSTALL_RPATH", "OFF");