Merge topic 'no-assert-missing-objlib'

d648c476 cmTarget: Don't assert on object libraries for configure-time location.

Source/cmTarget.cxx

@@ -5564,12 +5564,14 @@ cmTarget::GetObjectLibrariesCMP0026(std::vector<cmTarget*>& objlibs) const
           continue;
           }
         cmTarget *objLib = this->Makefile->FindTargetToUse(objLibName.c_str());
-        assert(objLib);
+        if(objLib)
+          {
           objlibs.push_back(objLib);
           }
         }
       }
     }
+}
 
 //----------------------------------------------------------------------------
 void cmTarget::GetLanguages(std::set<std::string>& languages,

Tests/RunCMake/CMP0026/ObjlibNotDefined-result.txt

@@ -0,0 +1 @@
+0

Tests/RunCMake/CMP0026/ObjlibNotDefined-stderr.txt

@@ -0,0 +1,12 @@
+CMake Warning \(dev\) at ObjlibNotDefined.cmake:[0-9]+ \(get_target_property\):
+  Policy CMP0026 is not set: Disallow use of the LOCATION target property.
+  Run "cmake --help-policy CMP0026" for policy details.  Use the cmake_policy
+  command to set the policy and suppress this warning.
+
+  The LOCATION property should not be read from target "objlibuser".  Use the
+  target name directly with add_custom_command, or use the generator
+  expression \$<TARGET_FILE>, as appropriate.
+
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.

Tests/RunCMake/CMP0026/ObjlibNotDefined.cmake

@@ -0,0 +1,13 @@
+
+enable_language(CXX)
+
+add_executable(objlibuser
+    empty.cpp
+    $<TARGET_OBJECTS:bar>
+)
+
+get_target_property(_location objlibuser LOCATION)
+
+add_library(bar OBJECT
+    empty.cpp
+)

Tests/RunCMake/CMP0026/RunCMakeTest.cmake

@@ -9,3 +9,4 @@ run_cmake(CMP0026-CONFIG-LOCATION-WARN)
 run_cmake(CMP0026-LOCATION-CONFIG-NEW)
 run_cmake(CMP0026-LOCATION-CONFIG-OLD)
 run_cmake(CMP0026-LOCATION-CONFIG-WARN)
+run_cmake(ObjlibNotDefined)