[Haskell-beginners] Installing hmatrix on OS X

[Duncan Mortimer]

Hi all,

I'm trying to install the easyVision library on OS X, following the
notes at http://mit.edu/harold/Public/easyVisionNotes.html.

However, despite a few hours web trawling and hacking away with
various cabal options, I can't get "hmatrix" to install.  I'm using OS
X 10.5.8 with GHC 6.10.4.   I installed gsl using macports, as
suggested in the notes above, but cabal doesn't seem to be able to
find it.  The error I'm getting is:

[13:22:35 dmorti hmatrix-0.8.2.0]$ cabal install hmatrix
Resolving dependencies...
[1 of 1] Compiling Main             (
/var/folders/05/05Ltg9vxE+a1hR422nbuE++++TI/-Tmp-/hmatrix-0.8.2.05810/hmatrix-0.8.2.0/Setup.lhs,
/var/folders/05/05Ltg9vxE+a1hR422nbuE++++TI/-Tmp-/hmatrix-0.8.2.05810/hmatrix-0.8.2.0/dist/setup/Main.o
)
Linking /var/folders/05/05Ltg9vxE+a1hR422nbuE++++TI/-Tmp-/hmatrix-0.8.2.05810/hmatrix-0.8.2.0/dist/setup/setup
...
Configuring hmatrix-0.8.2.0...
Checking foreign libraries... FAIL
 *** Sorry, I can't link GSL.
 *** Please make sure that the appropriate -dev packages are installed.
 *** You can also specify the required libraries using
 *** cabal install hmatrix --configure-option=link:lib1,lib2,lib3,etc.
setup: Package hmatrix-0.8.2.0 can't be built on this system.
cabal: Error: some packages failed to install:
hmatrix-0.8.2.0 failed during the building phase. The exception was:
exit: ExitFailure 1

It appears that others have also had this error, but have been able to
fix it up by including "--extra-lib-dirs" and "--extra-include-dirs"
options, or using "ld-options: -framework vecLib".  I've tried both of
these approaches, but still get the same errors.

Can anyone offer any suggestions?

Thanks very much for your help,
Duncan Mortimer