6.4 does mutual recursion much much better. See the manual. Don't expend much effort on mutual recn in 6.2 S | -----Original Message----- | From: glasgow-haskell-users-bounces@haskell.org [mailto:glasgow-haskell-users- | bounces@haskell.org] On Behalf Of Isaac Jones | Sent: 16 April 2005 01:46 | To: GHC-users list | Cc: Simon Marlow | Subject: hi-boot and dependencies bug? | | Greetings. | | I haven't tested this with ghc 6.4 yet, and I don't know if this is a | known problem. I noticed this while building support for cabal. | | I have two mutually recursive modules, prepared as described in the | GHC 6.2 user's manual: A and B | | I create A.hi-boot | in B, in import {-source-} A | | This works fine. But now I create C, which imports B (not A). When I | compile with --make, A does not get built, and I get a link-time | error. | | However, if C imports A directly, it builds everything just fine. | | I've attached a tarball with the example. Test it like this: | | % ghc --make C.hs | Chasing modules from: C.hs | Compiling B ( ./B.hs, ./B.o ) | Compiling Main ( C.hs, C.o ) | Linking ... | ./B.o(.text+0x1b): In function `__stginit_B_': | : undefined reference to `__stginit_A_' | collect2: ld returned 1 exit status | | | | peace, | isaac | | p.s. please CC me on replies; i'm not subscribed to this mailing list