DMD on x86_64

[Robert Clipsham]

I've been wanting to try D2 properly for a while now, but as I use linux 
x86-64 I've had to resort to using a virtual machine, which is really 
off putting when I just want to play around with it. I've read multiple 
threads about getting dmd working with a multilib system, but I still 
can't get it working, here's what I've tried:

test.d:
import std.stdio;

void main()
{
         writeln( "Hello World!" );
}

% dmd -v test.d
-- snip --
gcc test.o -o test -m32 -Xlinker -L./../lib -lphobos2 -lpthread -lm
/usr/bin/ld: skipping incompatible 
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../libpthread.so when 
searching for -lpthread
/usr/bin/ld: skipping incompatible 
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../libpthread.a when 
searching for -lpthread
/usr/bin/ld: skipping incompatible /usr/lib/libpthread.so when searching 
for -lpthread
/usr/bin/ld: skipping incompatible /usr/lib/libpthread.a when searching 
for -lpthread
/usr/bin/ld: cannot find -lpthread
collect2: ld returned 1 exit status
--- errorlevel 1

I have a 32 bit version of libpthread in /opt/lib32/lib, so I then tried:

% dmd test.d -L-L/opt/lib32/lib
/usr/bin/ld: skipping incompatible 
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../libpthread.so when 
searching for -lpthread
/usr/bin/ld: skipping incompatible 
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.4.3/../../../libpthread.a when 
searching for -lpthread
/usr/bin/ld: skipping incompatible /usr/lib/libpthread.so when searching 
for -lpthread
/usr/bin/ld: skipping incompatible /usr/lib/libpthread.a when searching 
for -lpthread
/usr/bin/ld: cannot find -lpthread
collect2: ld returned 1 exit status
--- errorlevel 1

ld still seems to be trying to use the 64 bit version. Trying to link 
manually with gcc (some options tweaked):

% gcc test.o -o test -m32 -Xlinker -L./../lib -L/opt/lib32/lib 
-L/opt/lib32/usr/lib -lphobos2 -lpthread -lm
/usr/bin/ld: skipping incompatible /lib/libpthread.so.0 when searching 
for /lib/libpthread.so.0
/usr/bin/ld: cannot find /lib/libpthread.so.0
collect2: ld returned 1 exit status

This seemed to get less errors than before. When I specified the path to 
libpthread manually it started complaining about libgcc. Using -v with 
the above command I found the linking command, then adapted that and 
tried manually again, but was left with the error:

/usr/bin/ld: warning: cannot find entry symbol _start; defaulting to 
0000000008048c90

When editing the linking command I had to remove a selection of gcc 
libraries that I don't have 32 bit versions of, which could be the 
issue, however according to nm none of the other .o's or .a's that are 
meant to get linked contain _start. Does anyone have any idea how I can 
get dmd working with a multi lib x86-64 system? I'm using Arch Linux, if 
you could point me in the right direction to get the missing libraries 
or whatever's needed to get dmd working let me know, thanks.

Robert