So here's what I don't understand: we make a non-blocking call to
gtk+'s
main loop
So far, so good.
(which makes a blocking call in a new OS thread).
With (the current version of) GHC's threaded RTS, there's only one OS
thread involved until you spawn a second thread (with forkIO or
forkOS).
and compiled this. So I created a file named project.obj.
We normally use .o rather than .obj; I don't know if using .obj can
cause any problems with ghc.
After that I wrote ghc -fffi -c test.lhs. But when I call blah from
ghci I get the error message: test.o unknown symbol '_test'
I think ghc
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