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From: "Dave Korn" <dave DOT korn AT artimi DOT com>
To: "'Salvatore D'Angelo'" <koala DOT gnu AT tiscali DOT it>, <cygwin AT cygwin DOT com>
Subject: RE: [Fwd: Re: ld: cannot perform PE operations on not PE files ...]
Date: Wed, 15 Nov 2006 10:11:17 -0000
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On 14 November 2006 17:45, Salvatore D'Angelo wrote:

> Dave you're right. I forgot to add -r.
> Thanks a lot. Your solution work fine.
> 
> The problem now is that I should change the Makefile in order to have
> two different behaviour in CYGWIN and linux.

  Actually, if I haven't messed up, the workaround method using -r should be
fine for linux too - have you tried it?

> The solutions are:
> 
> 1. use if statements in order to execute different statements on linux
> and cygwin. The question now is how I can do that. I mean what is the
> variable I have to check with ifdef?

  If you actually /needed/ to know, you could find out by $(shell uname) or
some similar variant, but I think the solution I gave should work fine on
linux and cygwin without needing to do anything different between the two.


> 2. Install binutils cross and set target i686-pc-linux. In this way I
> have to change only the name of tools used to compile and link. But I do
> not know how to do that. Could someone suggest me a link?

  Oh, it'll be easier to just show you how.  (Bulding a cross-compiler can be
ever so tricky, but building cross binutils is almost always a breeze):

Step 1:  Download and untar the sources, create a directory for building in.

cd /tmp
wget http://tinyurl.com/y7a7hu
tar xfvj binutils-2.17.tar.bz2
mkdir obj


Step 2:  Configure, build and install the sources.

cd obj
../binutils-2.17/configure -v --prefix=/usr/local \
        --target=i686-pc-linux 2>&1 | tee conf.log
make all 2>&1 | tee build.log
make install 2>&1 | tee install.log
[optional] make -k check 2>&1 | tee check.log

Step 3:  Tidy up.

cd ..
rm -rf obj binutils-2.17

  Now all you need to do is make sure you've got /usr/local/bin in your $PATH,
and away you go; set AS to i686-pc-linux-as and LD to i686-pc-linux-ld in your
makefile.

> please cc my address since I am not subscribed at the list

  I remembered this time!

    cheers,
      DaveK

[*] - the tinyurl points to
http://www.mirrorservice.org/sites/ftp.gnu.org/gnu/binutils/binutils-2.17.tar.
bz2 but avoids getting line-wrapped by the mailer!
-- 
Can't think of a witty .sigline today....


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