Re: [Boost-build] Cross compiling to 64 bit on 32 bit host

Subject: Re: [Boost-build] Cross compiling to 64 bit on 32 bit host
From: Vladimir Prus (ghost_at_[hidden])
Date: 2011-03-18 10:54:16

On Friday, March 18, 2011 17:35:32 Bo Jensen wrote:
> I am trying to build my 64 bit libraries on a 32 bit host and almost
> got it right. I can build correctly with gcc when adding -m64 on the
> commandline, so the libraries are all there. But when I build using
> boost build, the I get the following error :
> 
> /usr/bin/ld:
> /home/bj/sulum/external/boost/bin.v2/libs/thread/build/gcc-4.4.1/release/a
> ddress-model-64/link-static/threading-multi/libboost_thread.a(thread.o):
> relocation R_X86_64_32 against `tls_destructor' can not be used when
> making a shared object; recompile with -fPIC
> /home/bj/sulum/external/boost/bin.v2/libs/thread/build/gcc-4.4.1/release/ad
> dress-model-64/link-static/threading-multi/libboost_thread.a: could not
> read symbols: Bad value
> collect2: ld returned 1 exit status
> 
> I don't think it has any thing to do with thread library, I am missing
> something.
> 
> But all files are being compiled with -fPIC, so I am a bit stuck, any
> pointers appreciated ?

That's a well known issue -- dynamic executable for 64 bit x86 cannot use
non-fPIC code at all, and therefore using static libraries in such build
results in the error you see.

What is the exact command that produces the above error?

-- 
Vladimir Prus
http://vladimir_prus.blogspot.com
Boost.Build: http://boost.org/boost-build2