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