CMake: within Calamares repo, use the (eventual) imported names of libraries

src/libcalamares/CMakeLists.txt

@@ -166,6 +166,8 @@ target_link_libraries( calamares
         ${OPTIONAL_PUBLIC_LIBRARIES}
 )
 
+add_library(Calamares::calamares ALIAS calamares)
+
 ### Installation
 #
 #

src/libcalamaresui/CMakeLists.txt

@@ -89,6 +89,8 @@ if( WITH_QML )
     target_link_libraries( calamaresui PUBLIC Qt5::QuickWidgets )
 endif()
 
+add_library(Calamares::calamaresui ALIAS calamaresui)
+
 
 ### Installation
 #