Fix xxdi.pl script for sub projects

cmake/MMseqsResourceCompiler.cmake

@@ -1,11 +1,13 @@
+set(compile_resource__internal_dir ${CMAKE_CURRENT_LIST_DIR} CACHE INTERNAL "")
+
 find_program(XXD_EXECUTABLE xxd)
 if(NOT XXD_EXECUTABLE)
     find_program(PERL_EXECUTABLE perl)
     if(NOT PERL_EXECUTABLE)
         message(FATAL_ERROR "Neither xxd nor perl found in PATH. xxd is usually contained in your distributions vim-common package!")
     else()
         message("-- xxd not found, using xxdi.pl instead")
-        set(XXD_EXECUTABLE "${CMAKE_MODULE_PATH}/xxdi.pl")
+        set(XXD_EXECUTABLE "${compile_resource__internal_dir}/xxdi.pl")
         set(XXD_PARAMS "")
     endif()
 else()
@@ -30,7 +32,6 @@ else()
     set(SHELLCHECK_EXECUTABLE true)
 endif()
 
-set(compile_resource__internal_dir ${CMAKE_CURRENT_LIST_DIR} CACHE INTERNAL "")
 function(compile_resource INPUT_FILE OUTPUT_FILE)
     get_filename_component(INPUT_FILE_NAME ${PROJECT_SOURCE_DIR}/data/${INPUT_FILE} NAME)
     set(OUTPUT_FILE ${PROJECT_BINARY_DIR}/generated/${INPUT_FILE_NAME}.h PARENT_SCOPE)