On NetBSD, it is not supported to load a library linked against
libpthread into a program that wasn't (since the C library provides
stubs for some pthread-functions, which might have already been called
before libpthread is loaded, leading to problems).
Patch from Matthias Drochner
darwin*)
ax_pthread_flags="-pthread $ax_pthread_flags"
;;
+ netbsd*)
+ # use libc stubs, don't link against libpthread, to allow
+ # dynamic loading
+ ax_pthread_flags=""
+ ;;
esac
# Clang doesn't consider unrecognized options an error unless we specify