Packages & hat-trans output

"Michael McDermott" <mcdermott.michaeljgmail.com> writes:

> I have been working on a Gentoo ebuild for Hat and ran
across a few issues.
> First, it is the cabal package (not hat-package.conf)
that needs to be piped
> to ghc-pgk register - to register the package (which is
easy enough to work
> around). Futhermore, the file is somewhat incomplete. 
For example, if the
> import-dirs field is not added, then GHC is unable to
find Hat's classes.

Thanks for these reports.  We will look into fixing those.

> ghc     -package hat  -o Insert Hat/Insert.o
> Hat/Insert.o: In function `r2iZ_info':
> : undefined reference to `HatziHat_mkModule_closure'
> Hat/Insert.o: In function `HatziInsert_asort_info':
> : undefined reference to `HatziHat_mkVariable_closure'
> Hat/Insert.o: In function `HatziInsert_ainsert_info':
> ....
> 
> I am presuming that HatziInsert_ainsert_info, etc. are
functions in
> libraries or headers that should be linked to the
program, but, if so, where
> are they?

"HatziInsert_ainsert_info" is the (traced)
function Insert.ainsert in
the program you are trying to compile.  The error is that
this function
uses (by reference) the functions Hat.Hat.mkModule and
Hat.Hat.mkVariable.
Both of those are defined in the hat library Hat.Hat, and
should be
available to the compiler by the "-package hat"
flag.  I don't know why
this is failing.  What version of ghc?  Were there any
linking errors
when the hat package was built?

Regards,
    Malcolm
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