FindPkgConfig: optionally create imported target for the found libraries

Tests/RunCMake/FindPkgConfig/FindPkgConfig_IMPORTED_TARGET.cmake

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(FindPkgConfig_IMPORTED_TARGET C)
+
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(NCURSES IMPORTED_TARGET QUIET ncurses)
+
+if (NCURSES_FOUND)
+  set(tgt PkgConfig::NCURSES)
+  if (NOT TARGET ${tgt})
+    message(FATAL_ERROR "FindPkgConfig found ncurses, but did not create an imported target for it")
+  endif ()
+  set(prop_found FALSE)
+  foreach (prop IN ITEMS INTERFACE_INCLUDE_DIRECTORIES INTERFACE_LINK_LIBRARIES INTERFACE_COMPILE_OPTIONS)
+    get_target_property(value ${tgt} ${prop})
+    if (value)
+      message(STATUS "Found property ${prop} on target: ${value}")
+      set(prop_found TRUE)
+    endif ()
+  endforeach ()
+  if (NOT prop_found)
+    message(FATAL_ERROR "target ${tgt} found, but it has no properties")
+  endif ()
+else ()
+  message(STATUS "skipping test; ncurses not found")
+endif ()

Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake

@@ -15,4 +15,5 @@ find_package(PkgConfig)
 if (PKG_CONFIG_FOUND)
   run_cmake(FindPkgConfig_GET_VARIABLE)
   run_cmake(FindPkgConfig_cache_variables)
+  run_cmake(FindPkgConfig_IMPORTED_TARGET)
 endif ()