Writing a thread-safe library without pulling in pthreads

[Ian Lance Taylor]

Florian Weimer <fw@deneb.enyo.de> writes:

> I'd like to write a library which only uses locking if the application
> is linked against pthreads.  Is this possible?

Yes, and in fact libsupc++ in gcc does it.  You can declare the
pthread functions as weak references.  Then you only call them if the
address of the function is not NULL.

Ian