I think you need to install the 32bit ghc first, because you'll need all the 32bit haskell libs. At least I was able to use the 32bit ghc (version 6.8.2) on a 64 bit linux by changing the script in the bin directory from exec $GHCBIN $TOPDIROPT ${1+"$@"} to exec $GHCBIN -optc-m32 -opta-m32 -optl-m32 $TOPDIROPT ${1+"$@"} (no -fvia-C) HTH Christian Vincent Hanquez schrieb:

Hi Cafe,

I was looking for a way to generate 32 bits haskell binary on a 64 bits linux. I've looked at the user guide and tried to use the -fvia-C with -optc -m32 but the generated C file doesn't compile with lots of error messages like the following:

$ ghc -o hello hello.hs -fvia-C -optc "-m32" In file included from /usr/lib/ghc-6.10.4/include/Stg.h:206, from /tmp/ghc15772_0/ghc15772_0.hc:3:0:

/usr/lib/ghc-6.10.4/include/Regs.h:235:0: error: invalid register name for ‘R4’

I can't find any others parameters that seems to do anythings about the code generation or around the C compiler. so, does anyone knows if it's possible ? or have some documentation/link about this kind of things ?

Thanks,

Vincent Hanquez wrote:

I was looking for a way to generate 32 bits haskell binary on a 64 bits linux.

Once absolutely reliable and foolproof way of doing this is to run a 32 bit chroot within your 64 bit system and then then install the 32 bit vesion of GHC in the chroot. In Debian (and Ubuntu), the debootstrap and schroot packages are two tools that make the creation and management of chroots trivial. HTH, Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/