Hi,
On Sun, Nov 6, 2011 at 18:25, Stéphane Glondu glo...@debian.org wrote:
will ocamlgsl on mips and mipsel be fixed sometime, so orpie will
be available on those architectures again?
Actually, ocamlgsl compiles with no error when the #error directive is
commented out. There is a make test target, but it uses an unknown
fort command... and even so, the test-suite doesn't look very
thorough. I have no idea what is wrong on architectures with alignment
requirements, nor how to make it crash. ocamlgsl is ~9,000 lines of C
code... I don't know exactly what to fix in there.
I've put the upstream author in CC; maybe he can enlighten us...
Ocamlgsl doesn't work on architectures with double-word alignment
for float64 values (the ARCH_ALIGN_DOUBLE of the OCaml headers)
because OCaml values of type float array are converted by a simply
cast to (double *) in C before the call to GSL.
This works since float arrays are unboxed in OCaml. But OCaml values
are single-word aligned ... so archs with ARCH_ALIGN_DOUBLE would need
to copy the whole
array to re-align it before calling the C function and Ocamlgsl doesn't do that.
So if you disable the #error directive, ocamlgsl will segfault as soon
as you use a function with a 'float array' argument somewhere.
(fort is an old framework for unit tests in OCaml, I must still be
somewhere on SourceForge ... anyway yes, the test suite is pretty
light :)
--
Olivier
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