Genex: Fix $<CONFIG> with IMPORTED targets and multiple locations.

The old code checked only that there was a LOCATION for the
specified config, but did not check whether the config actually
mapped.

Task-number: 14292

Source/cmGeneratorExpressionEvaluator.cxx

@@ -564,10 +564,26 @@ static const struct ConfigurationTestNode : public cmGeneratorExpressionNode
       const char* loc = 0;
       const char* imp = 0;
       std::string suffix;
-      return context->CurrentTarget->GetMappedConfig(context->Config,
+      if (context->CurrentTarget->GetMappedConfig(context->Config,
                                                   &loc,
                                                   &imp,
-                                                  suffix) ? "1" : "0";
+                                                  suffix))
+        {
+        // This imported target has an appropriate location
+        // for this (possibly mapped) config.
+        // Check if there is a proper config mapping for the tested config.
+        std::vector<std::string> mappedConfigs;
+        std::string mapProp = "MAP_IMPORTED_CONFIG_";
+        mapProp += context->Config;
+        if(const char* mapValue =
+                        context->CurrentTarget->GetProperty(mapProp.c_str()))
+          {
+          cmSystemTools::ExpandListArgument(cmSystemTools::UpperCase(mapValue),
+                                            mappedConfigs);
+          return std::find(mappedConfigs.begin(), mappedConfigs.end(),
+                          context->Config) != mappedConfigs.end() ? "1" : "0";
+          }
+        }
       }
     return "0";
   }

Tests/GeneratorExpression/CMakeLists.txt

@@ -138,6 +138,31 @@ add_custom_target(check-part2 ALL
   VERBATIM
 )
 
+add_library(imported1 SHARED IMPORTED)
+set_property(TARGET imported1 PROPERTY IMPORTED_LOCATION_RELEASE release_loc)
+set_property(TARGET imported1 PROPERTY IMPORTED_LOCATION_DEBUG debug_loc)
+set_property(TARGET imported1 PROPERTY IMPORTED_CONFIGURATIONS RELEASE DEBUG)
+set_property(TARGET imported1 PROPERTY INTERFACE_INCLUDE_DIRECTORIES /imported1/include)
+
+add_library(imported2 SHARED IMPORTED)
+set_property(TARGET imported2 PROPERTY IMPORTED_LOCATION_RELEASE release_loc)
+set_property(TARGET imported2 PROPERTY IMPORTED_LOCATION_DEBUG debug_loc)
+set_property(TARGET imported2 PROPERTY IMPORTED_CONFIGURATIONS RELEASE DEBUG)
+set_property(TARGET imported2 PROPERTY INTERFACE_INCLUDE_DIRECTORIES /imported2/include)
+
+add_library(imported3 SHARED IMPORTED)
+set_property(TARGET imported3 PROPERTY IMPORTED_LOCATION_RELEASE release_loc)
+set_property(TARGET imported3 PROPERTY IMPORTED_LOCATION_DEBUG debug_loc)
+# Both Debug and Release should not be true when this is evaluated.
+set_property(TARGET imported3 APPEND PROPERTY
+  INTERFACE_INCLUDE_DIRECTORIES $<$<CONFIG:DEBUG>:$<TARGET_PROPERTY:imported1,INTERFACE_INCLUDE_DIRECTORIES>>)
+set_property(TARGET imported3 APPEND PROPERTY
+  INTERFACE_INCLUDE_DIRECTORIES $<$<CONFIG:RELEASE>:$<TARGET_PROPERTY:imported2,INTERFACE_INCLUDE_DIRECTORIES>>)
+
+add_library(imported4 SHARED IMPORTED)
+set_property(TARGET imported4 APPEND PROPERTY
+  INCLUDE_DIRECTORIES $<TARGET_PROPERTY:imported3,INTERFACE_INCLUDE_DIRECTORIES>)
+
 add_custom_target(check-part3 ALL
   COMMAND ${CMAKE_COMMAND}
     -Dtest_version_greater_1=$<VERSION_GREATER:1.0,1.1.1>
@@ -146,6 +171,11 @@ add_custom_target(check-part3 ALL
     -Dtest_version_less_2=$<VERSION_LESS:1.0,1.1.1>
     -Dtest_version_equal_1=$<VERSION_EQUAL:1.0.1,1.1>
     -Dtest_version_equal_2=$<VERSION_EQUAL:1.1,1.1>
+    -Dconfig=$<CONFIGURATION>
+    -Dtest_imported_debug=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
+    -Dtest_imported_release=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
+    -Dtest_imported_relwithdebinfo=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
+    -Dtest_imported_minsizerel=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
     -P ${CMAKE_CURRENT_SOURCE_DIR}/check-part3.cmake
   COMMAND ${CMAKE_COMMAND} -E echo "check done (part 3 of 3)"
   VERBATIM

Tests/GeneratorExpression/check-part3.cmake

@@ -7,3 +7,16 @@ check(test_version_less_1 "0")
 check(test_version_less_2 "1")
 check(test_version_equal_1 "0")
 check(test_version_equal_2 "1")
+
+foreach(c debug release relwithdebinfo minsizerel)
+  if(config AND NOT config STREQUAL NoConfig)
+    if(NOT "${test_imported_${c}}" MATCHES "^;/imported2/include$"
+        AND NOT "${test_imported_${c}}" MATCHES "^/imported1/include;$")
+      message(SEND_ERROR "test_imported_${c} is not correct: ${test_imported_${c}}")
+    endif()
+  else()
+    if(NOT "${test_imported_${c}}" MATCHES "^;$")
+      message(SEND_ERROR "test_imported_${c} is not an empty list: ${test_imported_${c}}")
+    endif()
+  endif()
+endforeach()