The LOCPATH environment variable

LOCPATH is an environment variable that tells the setlocale() function the name of the directory from which to load locale object files. If LOCPATH is not defined, the default directory /usr/lib/nls/locale is searched. LOCPATH is similar to the PATH environment variable; it contains a list of z/OS UNIX directories separated by colons. For detailed information on how setlocale() searches for locale object files, see the description of setlocale() in z/OS XL C/C++ Runtime Library Reference.