In ptw32_InterlockedCompareExchange.c, I've added a section for Borland's compiler; it's identical to that for the MS compiler except that it uses /* ... */ comments instead of ; comments. The other file is a makefile suitable for use with Borland's compiler (run "make -fBmakefile" in the directory). It builds a single version of the library, pthreadBC.dll and the corresponding pthreadBC.lib import library, which is comparable to the pthreadVC version; I can't personally see any demand for the versions that include structured or C++ exception cancellation handling so I haven't attempted to build those versions of the library. (I imagine a static version might be of use to some, but we can't legally use that on my commercial projects so I can't try that out, unfortunately.) Borland C++ doesn't define the ENOSYS constant used by pthreads-win32; rather than make more extensive patches to the pthreads-win32 source I have a mostly-arbitrary constant for it in the makefile. However this doesn't make it visible to the application using the library, so if anyone actually wants to use this constant in their apps (why?) someone might like to make a seperate NEED_BCC_something define to add this stuff. The makefile also #defines EDEADLK as EDEADLOCK, _timeb as timeb, and _ftime as ftime, to deal with the minor differences between the two RTLs' naming conventions, and sets the compiler flags as required to get a normal compile of the library. (While I'm on the subject, the reason Borland users should recompile the library, rather than using the impdef/implib technique suggested previously on the mailing list, is that a) the errno constants are different, so the results returned by the pthread_* functions can be meaningless, and b) the errno variable/pseudo-variable itself is different in the MS & BCC runtimes, so you can't access the pthreadVC's errno from a Borland C++-compiled host application correctly - I imagine there are other potential problems from the RTL mismatch too.) Best regards, Will -- Will Bryant Systems Architect, eCOSM Limited Cell +64 21 655 443, office +64 3 365 4176 http://www.ecosm.com/