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Re: [Xen-devel] xen 4.4.0 dependency lzo fails to build from source due to fPIC



>>> On 28.07.14 at 23:02, <anthony@xxxxxxxxxxxxxxx> wrote:
> If xen detects lzo, it tries to build tools/xclib/libxenguest.so.4.4.0
> with lzo support but fails with the error:
> 
> /usr/bin/ld:
> /usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../lib64/liblzo2.a(lzo_ini
> t.o):
> relocation R_X86_64_PC32 against symbol '_lzo_config_check' can not be
> used when making a shared object; recompile with -fPIC
> 
> reading around the subject it would seem to be a problem with the lzo
> library (2.08) which has been built without using the -fPIC option.
> However, when I look at the lzo package there is no standard way to
> build it with -fPIC. My workaround has been simply to remove the lzo
> package, but I'm not sure this is a good solution, and I don't
> understand why this problem doesn't seem to have been encountered before.
> 
> Should I be building Xen with LZO support? (does everybody else build
> without LZO support?)
> 
> Should I be adding fPIC to the LZO options and rebuilding LZO?
> 
> Is there something else I'm doing wrong that is causing the problem?

The expectation is that there is a shared library to link against, not
just a static one. If you want the static-only case supported, then
you'll need to contribute patches (and imo those should then cover
not just lzo, but all of the compression methods other than lz4).

Jan


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