TLL: Don't populate old link interface if CMP0022 is NEW.

Always populate the INTERFACE_LINK_LIBRARIES for interface
entries. Don't populate the old interface properties
matching (IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?
if CMP0022 is NEW.

Because the INTERFACE_LINK_LIBRARIES property is now populated by
the target_link_libraries when operating on a static library,
make an equivalent change which populates the property with
the same value when the old link_libraries() command is used. This
silences the policy warning in that case.

7 files changed, 58 insertions, 0 deletions

diff --git a/Tests/CMakeCommands/target_link_libraries/CMakeLists.txt b/Tests/CMakeCommands/target_link_libraries/CMakeLists.txt
index b003a1b..2240539 100644
--- a/Tests/CMakeCommands/target_link_libraries/CMakeLists.txt
+++ b/Tests/CMakeCommands/target_link_libraries/CMakeLists.txt
@@ -122,3 +122,5 @@ add_library(libConsumer empty.cpp)
 # evaluates to the empty string in non-Debug cases, ensure that that causes
 # no problems.
 target_link_libraries(libConsumer debug depA)
+
+add_subdirectory(cmp0022)
diff --git a/Tests/CMakeCommands/target_link_libraries/cmp0022/CMakeLists.txt b/Tests/CMakeCommands/target_link_libraries/cmp0022/CMakeLists.txt
new file mode 100644
index 0000000..dd6ab41
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/cmp0022/CMakeLists.txt
@@ -0,0 +1,18 @@
+
+include(GenerateExportHeader)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+cmake_policy(SET CMP0022 NEW)
+add_library(cmp0022lib SHARED cmp0022lib.cpp)
+generate_export_header(cmp0022lib)
+add_library(cmp0022ifacelib SHARED cmp0022ifacelib.cpp)
+generate_export_header(cmp0022ifacelib)
+target_link_libraries(cmp0022lib LINK_PUBLIC cmp0022ifacelib)
+
+assert_property(cmp0022lib LINK_INTERFACE_LIBRARIES "")
+assert_property(cmp0022ifacelib LINK_INTERFACE_LIBRARIES "")
+assert_property(cmp0022lib INTERFACE_LINK_LIBRARIES "cmp0022ifacelib")
+assert_property(cmp0022ifacelib INTERFACE_LINK_LIBRARIES "")
+
+add_executable(cmp0022exe cmp0022exe.cpp)
+target_link_libraries(cmp0022exe cmp0022lib)
diff --git a/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022exe.cpp b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022exe.cpp
new file mode 100644
index 0000000..008bb74
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022exe.cpp
@@ -0,0 +1,7 @@
+
+#include "cmp0022lib.h"
+
+int main(void)
+{
+  return cmp0022().Value;
+}
diff --git a/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022ifacelib.cpp b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022ifacelib.cpp
new file mode 100644
index 0000000..b285be0
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022ifacelib.cpp
@@ -0,0 +1,9 @@
+
+#include "cmp0022ifacelib.h"
+
+CMP0022Iface cmp0022iface()
+{
+  CMP0022Iface iface;
+  iface.Value = 0;
+  return iface;
+}
diff --git a/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022ifacelib.h b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022ifacelib.h
new file mode 100644
index 0000000..616dbf6
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022ifacelib.h
@@ -0,0 +1,9 @@
+
+#include "cmp0022ifacelib_export.h"
+
+struct CMP0022Iface
+{
+  int Value;
+};
+
+CMP0022Iface CMP0022IFACELIB_EXPORT cmp0022iface();
diff --git a/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022lib.cpp b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022lib.cpp
new file mode 100644
index 0000000..381d463
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022lib.cpp
@@ -0,0 +1,7 @@
+
+#include "cmp0022lib.h"
+
+CMP0022Iface cmp0022()
+{
+  return cmp0022iface();
+}
diff --git a/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022lib.h b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022lib.h
new file mode 100644
index 0000000..3235b9b
--- /dev/null
+++ b/Tests/CMakeCommands/target_link_libraries/cmp0022/cmp0022lib.h
@@ -0,0 +1,6 @@
+
+#include "cmp0022lib_export.h"
+
+#include "cmp0022ifacelib.h"
+
+CMP0022Iface CMP0022LIB_EXPORT cmp0022();