* A return of NULL indicates the file don't exist.

     * Search for it first on the -I search path, then on the .PATH

     *

     * search path, if not found in a -I directory.

     * Include files are first searched for relative to the including

     * file's location. We don't want to cd there, of course, so we

     * just tack on the old file's leading path components and call

     * Dir_FindFile to see if we can locate the beast.

     * XXX - this *does* search in the current directory, right?

    fullname = Dir_FindFile (file, parseIncPath);

    prefEnd = strrchr (fname, '/');

    if (prefEnd != (char *)NULL) {

	char  	*newName;

	*prefEnd = '\0';

	newName = str_concat (fname, file, STR_ADDSLASH);

	fullname = Dir_FindFile (newName, parseIncPath);

	if (fullname == (char *)NULL) {

	    fullname = Dir_FindFile(newName, dirSearchPath);

	}

	free (newName);

	*prefEnd = '/';

    } else {

	fullname = (char *)NULL;

    }

	/*

        fullname = Dir_FindFile(file, dirSearchPath);

	 * System makefile or makefile wasn't found in same directory as

	 * included makefile. Search for it first on the -I search path,

	 * then on the .PATH search path, if not found in a -I directory.

	 * XXX: Suffix specific?

	 */

	fullname = Dir_FindFile (file, parseIncPath);

	if (fullname == (char *)NULL) {

	    fullname = Dir_FindFile(file, dirSearchPath);

	}