Hi Christian,
On 09.06.2010, at 10:30, Christian Maeder wrote:
Chris Kuklewicz schrieb:
hsc2hs: On OS 10.6 ghc is calling hsc2hs without any special -arch
option, and hsc2hs is calculating offsets in x86_64 mode. This is
breaking the interface between ghc and c-structures for various
libraries. In particular I ran into this with gtk2hs.
It may suffice to get '--cc-flag=-m32 --ld-flag=-m32' to hsc2hs as a
work around. While ticket #2965 is not yet fixed it would be
better if
hsc2hs understood the default arch on OS X 10.6 is not compatible
with ghc.
Sorry, I'm only on a 32bit Mac, but my (installed) hsc2hs (for
ghc-6.12.2.20100521) file contains:
HSC2HS_EXTRA="--cflag=-m32 --lflag=-m32 -I<...>
Is this not sufficient for 64bit Macs, too?
I guess it would be enough, but obiously ghc or cabal should do this
correctly themselves.
What I would like to get out of this email thread is a set of rules
that allows me to hack around this issue.
So far:
if os(darwin) && arch(x86_64) && impl(ghc >=6.10 <=6.12)
cpp-options: -DHSC2HS_EXTRA="--cflag=-m32 --lflag=-m32"
(although I'm not even sure the above works).
Is the above rule correct and future-proof?
Cheers,
Axel
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