I am assigned the job of building the boost regex on VXworks gcc compiler.

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From the boost regex documentation, I see that we need to have a make file corresponding to the platform to build the library. Can some one tell me how to build it for Vxworks gcc, if they have built the library earlier.

Assuming you can't use Boost.Build or the existing Makes files to build, then you can either: * take all the .cpp files in libs/regex/src and build them into a library using your build environment, or * modify libs/regex/build/generic.mak to use your compiler. Basically, it's "just a bunch of sources", no great magic involved, HTH, John.