if (prefix[0] == '\0') {
	    prefix = NULL;
	}
    }
    if ((fullFileName[0] == 0) && (prefix == NULL)) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"must specify either file name or prefix", -1));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "NOLIBRARY",
		(char *)NULL);
	code = TCL_ERROR;
	goto done;
    }

    /*
     * Figure out which interpreter we're going to load the library into.
     */

	    /*
	     * Can't have two different libraries loaded from the same file.
	     */

	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "file \"%s\" is already loaded for prefix \"%s\"",
		    fullFileName, libraryPtr->prefix));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD",
		    "SPLITPERSONALITY", (char *)NULL);
	    code = TCL_ERROR;
	    Tcl_MutexUnlock(&libraryMutex);
	    goto done;
	}
    }
    Tcl_MutexUnlock(&libraryMutex);
    if (libraryPtr == NULL) {

	 * The desired file isn't currently loaded, so load it. It's an error
	 * if the desired library is a static one.
	 */

	if (fullFileName[0] == 0) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "no library with prefix \"%s\" is loaded statically", prefix));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "NOTSTATIC",
		    (char *)NULL);
	    code = TCL_ERROR;
	    goto done;
	}

	/*
	 * Figure out the prefix if it wasn't provided explicitly.
	 */

		}
	    }
	    if (p == pkgGuess) {
		Tcl_DecrRefCount(splitPtr);
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"cannot figure out prefix for %s",
			fullFileName));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD",
			"WHATLIBRARY", (char *)NULL);
		code = TCL_ERROR;
		goto done;
	    }
	    Tcl_DStringAppend(&pfx, pkgGuess, p - pkgGuess);
	    Tcl_DecrRefCount(splitPtr);

	    /*

     */

    if (Tcl_IsSafe(target)) {
	if (libraryPtr->safeInitProc == NULL) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "cannot use library in a safe interpreter: no"
		    " %s_SafeInit procedure", libraryPtr->prefix));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "UNSAFE",
		    (char *)NULL);
	    code = TCL_ERROR;
	    goto done;
	}
	code = libraryPtr->safeInitProc(target);
    } else {
	if (libraryPtr->initProc == NULL) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "cannot attach library to interpreter: no %s_Init procedure",
		    libraryPtr->prefix));
	    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "LOAD", "ENTRYPOINT",
		    (char *)NULL);
	    code = TCL_ERROR;
	    goto done;
	}
	code = libraryPtr->initProc(target);
    }

    /*

	if (prefix[0] == '\0') {
	    prefix = NULL;
	}
    }
    if ((fullFileName[0] == 0) && (prefix == NULL)) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"must specify either file name or prefix", -1));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "NOLIBRARY",
		(char *)NULL);
	code = TCL_ERROR;
	goto done;
    }

    /*
     * Figure out which interpreter we're going to load the library into.
     */

	/*
	 * It's an error to try unload a static library.
	 */

	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"library with prefix \"%s\" is loaded statically and cannot be unloaded",
		prefix));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "STATIC",
		(char *)NULL);
	code = TCL_ERROR;
	goto done;
    }
    if (libraryPtr == NULL) {
	/*
	 * The DLL pointed by the provided filename has never been loaded.
	 */

	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"file \"%s\" has never been loaded", fullFileName));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "NEVERLOADED",
		(char *)NULL);
	code = TCL_ERROR;
	goto done;
    }

    /*
     * Scan through the list of libraries already loaded in the target
     * interpreter. If the library we want is already loaded there, then we

	/*
	 * The library has not been loaded in this interpreter.
	 */

	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"file \"%s\" has never been loaded in this interpreter",
		fullFileName));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "NEVERLOADED",
		(char *)NULL);
	code = TCL_ERROR;
	goto done;
    }

    code = UnloadLibrary(interp, target, libraryPtr, keepLibrary, fullFileName, 0);

  done:

    if (Tcl_IsSafe(target)) {
	if (libraryPtr->safeUnloadProc == NULL) {
	    if (!interpExiting) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"file \"%s\" cannot be unloaded under a safe interpreter",
			fullFileName));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "CANNOT",
			(char *)NULL);
		code = TCL_ERROR;
		goto done;
	    }
	}
	unloadProc = libraryPtr->safeUnloadProc;
    } else {
	if (libraryPtr->unloadProc == NULL) {
	    if (!interpExiting) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"file \"%s\" cannot be unloaded under a trusted interpreter",
			fullFileName));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "CANNOT",
			(char *)NULL);
		code = TCL_ERROR;
		goto done;
	    }
	}
	unloadProc = libraryPtr->unloadProc;
    }

		code = TCL_ERROR;
	    }
	}
#else
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"file \"%s\" cannot be unloaded: unloading disabled",
		fullFileName));
	Tcl_SetErrorCode(interp, "TCL", "OPERATION", "UNLOAD", "DISABLED",
		NULL);
	code = TCL_ERROR;
#endif
    }

  done:
    return code;
}