Make mkcontrollers script work when building as a submodule

CMakeLists.txt

@@ -32,7 +32,7 @@ else()
   if(NOT TARGET akerror::akerror)
     find_package(akerror REQUIRED)
   endif()
-  if(NOT TARGET akstdib::akstdlib)
+  if(NOT TARGET akstdlib::akstdlib)
     find_package(akstdlib REQUIRED)
   endif()
   if(NOT TARGET jansson::jansson)
@@ -50,7 +50,7 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/akgl.pc.in ${CMAKE_CURRENT_BINARY_DIR
 
 add_custom_command(
   OUTPUT ${GAMECONTROLLERDB_H}
-  COMMAND ../mkcontrollermappings.sh
+  COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/mkcontrollermappings.sh ${CMAKE_CURRENT_SOURCE_DIR}
   COMMENT "Generating controller mappings ..."
 )
 
@@ -76,6 +76,7 @@ add_library(akgl SHARED
   ${GAMECONTROLLERDB_H}
 )
 
+add_library(akgl::akgl ALIAS akgl)
 
 add_executable(charviewer util/charviewer.c)
 add_executable(test_actor tests/actor.c)