On 08/21/2015 04:00 PM, Erik de Castro Lopo wrote:

Ben Burdette wrote:

I've been trying to get going with ghc 7.10.2 on armv7 debian, problem
is described here:

http://stackoverflow.com/questions/32124334/ghc-armv7-binary-cabal-illegal-instruction

I suspect your problem may be related to this one:

    https://ghc.haskell.org/trac/ghc/ticket/10375

which I started work on, got stuck and haven't had time to return to.

Erik

That does seem to be the case. I was able to duplicate their ghci error:

GHCi, version 7.10.2: http://www.haskell.org/ghc/ :? for help
Prelude> data Planet = Mercury | Venus deriving Eq
Prelude> Mercury == Mercury
Illegal instruction
bburdette@jessie-rpi:~$

And my hello world program:

main = do
putStrLn "hello"

The results:

bburdette@jessie-rpi:~$ ghc hello.hs
[1 of 1] Compiling Main             ( hello.hs, hello.o )
Linking hello ...
bburdette@jessie-rpi:~$ ls
bin   ghc-7.10.2-arm-unknown-linux.tar.xz hello.hi hello.o
code hello                                hello.hs
bburdette@jessie-rpi:~$ ./hello
Illegal instruction
bburdette@jessie-rpi:~$ ghc -O2 hello.hs
bburdette@jessie-rpi:~$ ./hello
Illegal instruction
bburdette@jessie-rpi:~$

Ok, thx for the help - I'll follow progress on the bug. Let me know if there's anything else you'd like be to try.

Ben