[Haskell-cafe] Cross-compilation x64 -> x86 easier under Ubuntu 11.10 with multiarch?

[Joachim Breitner]

Hi,

Am Donnerstag, den 13.10.2011, 22:26 +0400 schrieb Michael Lazarev:
> It turns out that it is also possible to compile a 32-bit executable
> by 32-bit ghc under Ubuntu 11.10 x64. First, additional files
> supporting compilation for different architectures in gcc must be
> installed by "sudo apt-get install g++multilib". Second, one need to
> pass additional arguments to ghc: "-opta -m32 -optl -m32". They are,
> in turn, passed to gcc assembler and linker, respectively, telling
> them to build for 32-bit architecture.
> 
> 
> Complete example:
> 
> ----------------------------------------------------------------------
> 
> $ sudo apt-get install lib32gmp-dev g++multilib
> 
> $ cat ./Test.hs 
> module Main where
> 
> import Control.Monad
> 
> getR :: Read r => IO r
> getR = liftM read getLine
> 
> main = liftM2 (+) getR getR >>= print
> 
> 
> $ /home/ml/local/ghc/7.0.4-32/bin/ghc --make ./Test.hs -opta -m32
> -optl -m32
> Linking Test ...
> 
> $ file ./Test
> ./Test: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
> dynamically linked (uses shared libs), for GNU/Linux 2.6.15, not
> stripped
> 
> ----------------------------------------------------------------------

Did you build the boot libraries and possible ghc also with these flags?

Greetings,
Joachim
-- 
Joachim "nomeata" Breitner
  mail at joachim-breitner.de  |  nomeata at debian.org  |  GPG: 0x4743206C
  xmpp: nomeata at joachim-breitner.de | http://www.joachim-breitner.de/

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