Merge topic 'link-options'

98a2d42301 PIE link options: No warning when policy CMP0083 is not set.

Acked-by: Kitware Robot <[email protected]>
Merge-request: !2996

Help/policy/CMP0083.rst

@@ -23,9 +23,10 @@ which it is used, it is the project's responsibility to use the
 :prop_tgt:`POSITION_INDEPENDENT_CODE` target property for executables will be
 honored at link time.
 
-This policy was introduced in CMake version 3.14.  CMake version
-|release| warns when the policy is not set and uses ``OLD`` behavior.  Use
-the :command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly.
+This policy was introduced in CMake version 3.14. Use the
+:command:`cmake_policy` command to set it to ``OLD`` or ``NEW`` explicitly.
+Unlike most policies, CMake version |release| does not warn when this policy is
+not set and simply uses ``OLD`` behavior.
 
 .. include:: DEPRECATED.txt
 

Source/cmGeneratorTarget.cxx

@@ -510,21 +510,10 @@ const char* cmGeneratorTarget::GetLinkPIEProperty(
     return nullptr;
   }
 
-  switch (this->GetPolicyStatusCMP0083()) {
-    case cmPolicies::WARN: {
-      std::ostringstream e;
-      e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0083);
-      this->LocalGenerator->IssueMessage(MessageType::AUTHOR_WARNING, e.str());
-      CM_FALLTHROUGH;
-    }
-    case cmPolicies::OLD:
-      return nullptr;
-    default:
-      // nothing to do
-      break;
-  }
-
-  return PICValue.c_str();
+  auto status = this->GetPolicyStatusCMP0083();
+  return (status != cmPolicies::WARN && status != cmPolicies::OLD)
+    ? PICValue.c_str()
+    : nullptr;
 }
 
 bool cmGeneratorTarget::IsIPOEnabled(std::string const& lang,