Check if target exists when reading target properties

libxslt-config.cmake.cmake.in

@@ -19,6 +19,7 @@
 set(LIBXSLT_EXSLT_LIBRARY_DIR "${PACKAGE_PREFIX_DIR}/@CMAKE_INSTALL_LIBDIR@")
 
 macro(select_library_location target basename)
+	if(TARGET ${target})
 		foreach(property IN ITEMS IMPORTED_LOCATION IMPORTED_IMPLIB)
 			get_target_property(${basename}_${property}_DEBUG ${target} ${property}_DEBUG)
 			get_target_property(${basename}_${property}_MINSIZEREL ${target} ${property}_MINSIZEREL)
@@ -41,6 +42,7 @@
 				set(${basename}_LIBRARY ${${basename}_${property}_DEBUG})
 			endif()
 		endforeach()
+	endif()
 endmacro()
 
 macro(select_executable_location target basename)
@@ -44,6 +46,7 @@
 endmacro()
 
 macro(select_executable_location target basename)
+	if(TARGET ${target})
 		get_target_property(${basename}_IMPORTED_LOCATION_DEBUG ${target} IMPORTED_LOCATION_DEBUG)
 		get_target_property(${basename}_IMPORTED_LOCATION_MINSIZEREL ${target} IMPORTED_LOCATION_MINSIZEREL)
 		get_target_property(${basename}_IMPORTED_LOCATION_RELEASE ${target} IMPORTED_LOCATION_RELEASE)
@@ -58,6 +61,7 @@
 		elseif(${basename}_IMPORTED_LOCATION_DEBUG)
 			set(${basename}_EXECUTABLE ${${basename}_IMPORTED_LOCATION_DEBUG})
 		endif()
+	endif()
 endmacro()
 
 select_library_location(LibXslt::LibXslt LIBXSLT)