Building from source -- zlib/binascii problems 2.5.2/2.6.1

peter s. psftw1 at gmail.com
Sun Dec 14 23:09:07 CET 2008


On Dec 14, 5:03 pm, "peter s." <psf... at gmail.com> wrote:
> On Dec 14, 4:54 pm, "Martin v. Löwis" <mar... at v.loewis.de> wrote:
>
>
>
> > > Target: x86_64-redhat-linux
> > > gcc -pthread -shared build/temp.linux-x86_64-2.5/location/of/
> > > Python-2.5.2/Modules/zlibmodule.o -L/usr/local/lib -lz -o build/
> > > lib.linux-x86_64-2.5/zlib.so
> > > /usr/bin/ld: skipping incompatible /usr/lib/libz.so when searching for
> > > -lz
>
> > Do
>
> >   file /usr/lib/libz.so
>
> > It might be a 32-bit library, in which case you can check whether
> > /usr/lib64 has a 64-bit library. I'm puzzled why it only
> > happens for -lz; perhaps you are better of compiling with a 32-bit
> > compiler.
>
> > Regards,
> > Martin
>
> $ file /usr/lib/libz.s*
> /usr/lib/libz.so:       symbolic link to `libz.so.1.2.3'
> /usr/lib/libz.so.1:     symbolic link to `libz.so.1.2.3'
> /usr/lib/libz.so.1.2.3: ELF 32-bit LSB shared object, Intel 80386,
> version 1 (SYSV), stripped

I meant to also add

$ file /usr/lib64/libz.s*
/usr/lib64/libz.so.1:     symbolic link to `libz.so.1.2.3'
/usr/lib64/libz.so.1.2.3: ELF 64-bit LSB shared object, AMD x86-64,
version 1 (SYSV), stripped

So.. it seems as though I need to get it to point to the 64 bit
version (or compile the zlib that comes with Python source).  I'm not
sure how to override that.



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