GHCi isn't supported on x86_64 in version 6.4 (the soon-to-be-relesaed 6.4.1 will have initial support for GHCi, though). When using the i386 build, you also need to pass additional options to ghc: $ ghc -opta-m32 -optc-m32 -optl-m32 ... this tells gcc to generate i386 code when invoked by ghc. Cheers, Simon ________________________________ From: fedora-haskell-bounces@haskell.org [mailto:fedora-haskell-bounces@haskell.org] On Behalf Of James Cheney Sent: 22 July 2005 16:59 To: fedora-haskell@haskell.org Subject: [Fedora-haskell] x86_64 packages Hi, I am running FC3/x86_64. When I install the ghc(64)-6.4-7.x86_64 packages, ghc runs fine in batch mode, but ghci fails to work with the following message: $ ghci ghc-6.4: not built for interactive use On the other hand, when I install the i386 packages, ghci works fine but ghc compilation fails at the assemby step: [jcheney@dhcp-2-148]$ ghc Main.hs -o main /tmp/ghc4976.s: Assembler messages: /tmp/ghc4976.s:67: Error: suffix or operands invalid for `push' /tmp/ghc4976.s:119: Error: suffix or operands invalid for `push' /tmp/ghc4976.s:163: Error: suffix or operands invalid for `push' [etc...] Is this a known issue? I'll try building from the source to see what happens. Thanks, --James