ENH: Add target property LINK_SEARCH_END_STATIC to help people building static...

ENH: Add target property LINK_SEARCH_END_STATIC to help people building static binaries on some platforms.

Source/cmComputeLinkInformation.cxx

@@ -340,7 +340,15 @@ bool cmComputeLinkInformation::Compute()
 
   // Restore the target link type so the correct system runtime
   // libraries are found.
-  this->SetCurrentLinkType(this->StartLinkType);
+  const char* lss = this->Target->GetProperty("LINK_SEARCH_END_STATIC");
+  if(cmSystemTools::IsOn(lss))
+    {
+    this->SetCurrentLinkType(LinkStatic);
+    }
+  else
+    {
+    this->SetCurrentLinkType(this->StartLinkType);
+    }
 
   // Compute the linker search path.
   this->ComputeLinkerSearchDirectories();

Source/cmTarget.cxx

@@ -284,6 +284,18 @@ void cmTarget::DefineProperties(cmake *cm)
      "Per-configuration linker flags for a target.",
      "This is the configuration-specific version of LINK_FLAGS.");
 
+  cm->DefineProperty
+    ("LINK_SEARCH_END_STATIC", cmProperty::TARGET,
+     "End a link line such that static system libraries are used.",
+     "Some linkers support switches such as -Bstatic and -Bdynamic "
+     "to determine whether to use static or shared libraries for -lXXX "
+     "options.  CMake uses these options to set the link type for "
+     "libraries whose full paths are not known or (in some cases) are in "
+     "implicit link directories for the platform.  By default the "
+     "linker search type is left at -Bdynamic by the end of the library "
+     "list.  This property switches the final linker search type to "
+     "-Bstatic.");
+
   cm->DefineProperty
     ("LINKER_LANGUAGE", cmProperty::TARGET,
      "What tool to use for linking, based on language.",