Robert Clipsham wrote:
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
Try typing:
export LD_LIBRARY_PATH="/opt/lib32"
before compiling.
-Lars
