On 11/07 10:26, henry nelson wrote:
> Not sure I understand "used by pkgsrc by default", though.  Where would
> one look to find out how GNU pth is patched and configured for NetBSD?

In Packages.txt:
* pthread.buildlink2.mk uses the value of PTHREAD_OPTS and checks for
  native pthreads or adds a dependency on devel/pth as needed;

Read mk/pthread.buildlink2.mk if you want the gory details.

As for how it's patched and configured, look at the patches in
pkgsrc/devel/pth/patches/, and read pkgsrc/devel/pth/Makefile.