Hi, I need boost to compile on VxWorks. But I found Boost.build has built-in feature target-os, in which VxWorks is not supported. "target-os The operating system for which the code is to be generated. The compiler you used should be the compiler for that operating system. This option causes Boost.Build to use naming conventions suitable for that operating system, and adjust build process accordingly. For example, with gcc, it controls if import libraries are produced for shared libraries or not. The complete list of possible values for this feature is: aix, bsd, cygwin, darwin, freebsd, hpux, iphone, linux, netbsd, openbsd, osf, qnx, qnxnto, sgi, solaris, unix, unixware, windows. " Do boost cross-compilation works on VxWorks?? Regards Nandagopal