lpcxpresso v5.2.4 does not compile (probably) all periph-projects from lpcopen v1.03.
The nxp_xpresso_1769_board_lib library compiles fine.
The reason is that the include and library pathnames in these projects contain "\" as the path separator, not "/".
After changing all separators it works fine.
I don't know whether this is the proper solution with respect to windows.