224 exec_prefix = config.get('exec_prefix')  variable
523         if not exec_prefix:
524             exec_prefix = build_prefix  variable
538     prefix = exec_prefix = ''
545         prefix, had_delim, exec_prefix = home.partition(DELIM)  variable
547             exec_prefix = prefix  variable
599     if PLATSTDLIB_LANDMARK and not exec_prefix:
604             exec_prefix = prefix  variable
605         if not exec_prefix and executable_dir:
606             exec_prefix = search_up(executable_dir, PLATSTDLIB_LANDMARK, test=isdir)  variable
607         if not exec_prefix and EXEC_PREFIX:
608             exec_prefix = EXEC_PREFIX  variable
609         if not exec_prefix or not isdir(joinpath(exec_prefix, PLATSTDLIB_LANDMARK)):
620                     platstdlib_dir = exec_prefix
626     if not exec_prefix:
627         exec_prefix = prefix  variable
630     if not prefix or not exec_prefix:
714     if not platstdlib_dir and exec_prefix:
715         platstdlib_dir = joinpath(exec_prefix, PLATSTDLIB_LANDMARK)
747     exec_prefix = config.get('exec_prefix') or EXEC_PREFIX or prefix  variable
782 config['exec_prefix'] = exec_prefix
784 config['base_exec_prefix'] = base_exec_prefix or exec_prefix