hi-boot and dependencies bug?

[Simon Marlow]

I expect this is the same bug we fixed in 6.4 recently.  One workaround
is to mention the missing module explicitly on the ghc command line, to
force it to be included in the program.

Cheers,
	Simon

On 16 April 2005 17:30, Simon Peyton-Jones wrote:

> 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 at haskell.org
>> [mailto:glasgow-haskell-users- bounces at 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