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.
Secondly, once I was able to get past that issue, the output from hat-trans
fails to compile. Here is a sample of the output:
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? Since I don't know, it has been hard to add this to the Cabal
package or GHC's config files. The output was virtually the same for both
programs I tried to run hat on. The first was Insert.hs, the example on the
tutorial page and the second was a basic hello world:
module Main where
main = do putStrLn "Hello, world"
Both programs appear to work 100% when run through GHC vanilla. If you
could give me some insight into these errors, it would be greatly
appreciated.
Sincerely,
Michael McDermott
