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-rw-r--r--Help/prop_tgt/MAP_IMPORTED_CONFIG_CONFIG.rst22
-rw-r--r--Help/release/dev/allow-fallback-config-mapping.rst6
-rw-r--r--Source/cmTarget.cxx41
-rw-r--r--Tests/GeneratorExpression/CMakeLists.txt8
-rw-r--r--Tests/GeneratorExpression/check-part3.cmake2
5 files changed, 57 insertions, 22 deletions
diff --git a/Help/prop_tgt/MAP_IMPORTED_CONFIG_CONFIG.rst b/Help/prop_tgt/MAP_IMPORTED_CONFIG_CONFIG.rst
index 09ff0ce..4da855b 100644
--- a/Help/prop_tgt/MAP_IMPORTED_CONFIG_CONFIG.rst
+++ b/Help/prop_tgt/MAP_IMPORTED_CONFIG_CONFIG.rst
@@ -1,19 +1,25 @@
MAP_IMPORTED_CONFIG_<CONFIG>
----------------------------
-Map from project configuration to IMPORTED target's configuration.
+Map from project configuration to
+:ref:`imported target <IMPORTED targets>`'s configuration.
Set this to the list of configurations of an imported target that may
-be used for the current project's <CONFIG> configuration. Targets
+be used for the current project's ``<CONFIG>`` configuration. Targets
imported from another project may not provide the same set of
configuration names available in the current project. Setting this
property tells CMake what imported configurations are suitable for use
-when building the <CONFIG> configuration. The first configuration in
-the list found to be provided by the imported target is selected. If
-this property is set and no matching configurations are available,
+when building the ``<CONFIG>`` configuration. The first configuration in
+the list found to be provided by the imported target (i.e. via
+:prop_tgt:`IMPORTED_LOCATION_<CONFIG>` for the mapped-to ``<CONFIG>``)
+is selected. As a special case, an empty list element refers to the
+configuration-less imported target location
+(i.e. :prop_tgt:`IMPORTED_LOCATION`).
+
+If this property is set and no matching configurations are available,
then the imported target is considered to be not found. This property
is ignored for non-imported targets.
-This property is initialized by the value of the variable
-CMAKE_MAP_IMPORTED_CONFIG_<CONFIG> if it is set when a target is
-created.
+This property is initialized by the value of the
+:variable:`CMAKE_MAP_IMPORTED_CONFIG_<CONFIG>` variable if it is set when a
+target is created.
diff --git a/Help/release/dev/allow-fallback-config-mapping.rst b/Help/release/dev/allow-fallback-config-mapping.rst
new file mode 100644
index 0000000..2522e10
--- /dev/null
+++ b/Help/release/dev/allow-fallback-config-mapping.rst
@@ -0,0 +1,6 @@
+allow-fallback-config-mapping
+-----------------------------
+
+* The :prop_tgt:`MAP_IMPORTED_CONFIG_<CONFIG>` target property learned
+ to interpret empty list elements as referring to the configuration-less
+ imported location specified by :prop_tgt:`IMPORTED_LOCATION`.
diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index 3718d95..6f47f85 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -1403,7 +1403,7 @@ bool cmTarget::GetMappedConfig(std::string const& desired_config,
std::string mapProp = "MAP_IMPORTED_CONFIG_";
mapProp += desired_config;
if (const char* mapValue = this->GetProperty(mapProp)) {
- cmSystemTools::ExpandListArgument(mapValue, mappedConfigs);
+ cmSystemTools::ExpandListArgument(mapValue, mappedConfigs, true);
}
}
@@ -1416,20 +1416,33 @@ bool cmTarget::GetMappedConfig(std::string const& desired_config,
for (std::vector<std::string>::const_iterator mci = mappedConfigs.begin();
!*loc && !*imp && mci != mappedConfigs.end(); ++mci) {
// Look for this configuration.
- std::string mcUpper = cmSystemTools::UpperCase(*mci);
- std::string locProp = "IMPORTED_LOCATION_";
- locProp += mcUpper;
- *loc = this->GetProperty(locProp);
- if (allowImp) {
- std::string impProp = "IMPORTED_IMPLIB_";
- impProp += mcUpper;
- *imp = this->GetProperty(impProp);
- }
+ if (mci->empty()) {
+ // An empty string in the mapping has a special meaning:
+ // look up the config-less properties.
+ *loc = this->GetProperty("IMPORTED_LOCATION");
+ if (allowImp) {
+ *imp = this->GetProperty("IMPORTED_IMPLIB");
+ }
+ // If it was found, set the suffix.
+ if (*loc || *imp) {
+ suffix = "";
+ }
+ } else {
+ std::string mcUpper = cmSystemTools::UpperCase(*mci);
+ std::string locProp = "IMPORTED_LOCATION_";
+ locProp += mcUpper;
+ *loc = this->GetProperty(locProp);
+ if (allowImp) {
+ std::string impProp = "IMPORTED_IMPLIB_";
+ impProp += mcUpper;
+ *imp = this->GetProperty(impProp);
+ }
- // If it was found, use it for all properties below.
- if (*loc || *imp) {
- suffix = "_";
- suffix += mcUpper;
+ // If it was found, use it for all properties below.
+ if (*loc || *imp) {
+ suffix = "_";
+ suffix += mcUpper;
+ }
}
}
diff --git a/Tests/GeneratorExpression/CMakeLists.txt b/Tests/GeneratorExpression/CMakeLists.txt
index 27f33a2..4f2f434 100644
--- a/Tests/GeneratorExpression/CMakeLists.txt
+++ b/Tests/GeneratorExpression/CMakeLists.txt
@@ -171,6 +171,13 @@ add_executable(Alias::SomeExe ALIAS someexe)
add_library(Alias::SomeLib ALIAS empty1)
+add_library(importedFallback STATIC IMPORTED)
+set_property(TARGET importedFallback PROPERTY IMPORTED_LOCATION_DEBUG debug_loc)
+set_property(TARGET importedFallback PROPERTY IMPORTED_LOCATION_RELEASE release_loc)
+set_property(TARGET importedFallback PROPERTY IMPORTED_LOCATION fallback_loc)
+set_property(TARGET importedFallback PROPERTY MAP_IMPORTED_CONFIG_DEBUG "" DEBUG)
+set_property(TARGET importedFallback PROPERTY MAP_IMPORTED_CONFIG_RELEASE "")
+
add_custom_target(check-part3 ALL
COMMAND ${CMAKE_COMMAND}
-Dtest_version_greater_1=$<VERSION_GREATER:1.0,1.1.1>
@@ -184,6 +191,7 @@ add_custom_target(check-part3 ALL
-Dtest_imported_release=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
-Dtest_imported_relwithdebinfo=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
-Dtest_imported_minsizerel=$<TARGET_PROPERTY:imported4,INCLUDE_DIRECTORIES>
+ -Dtest_imported_fallback=$<STREQUAL:$<TARGET_FILE_NAME:importedFallback>,fallback_loc>
-Dtest_alias_file_exe=$<STREQUAL:$<TARGET_FILE:Alias::SomeExe>,$<TARGET_FILE:someexe>>
-Dtest_alias_file_lib=$<STREQUAL:$<TARGET_FILE:Alias::SomeLib>,$<TARGET_FILE:empty1>>
-Dtest_alias_target_name=$<STREQUAL:$<TARGET_PROPERTY:Alias::SomeLib,NAME>,$<TARGET_PROPERTY:empty1,NAME>>
diff --git a/Tests/GeneratorExpression/check-part3.cmake b/Tests/GeneratorExpression/check-part3.cmake
index 70ccfe1..e12d8c6 100644
--- a/Tests/GeneratorExpression/check-part3.cmake
+++ b/Tests/GeneratorExpression/check-part3.cmake
@@ -21,6 +21,8 @@ foreach(c debug release relwithdebinfo minsizerel)
endif()
endforeach()
+check(test_imported_fallback "1")
+
check(test_alias_file_exe "1")
check(test_alias_file_lib "1")
check(test_alias_target_name "1")