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Re: memory error compiling mapnik .. help?

by Dane Springmeyer :: Rate this Message:

Hey Mikel,

On May 31, 2009, at 10:06 AM, Mikel Maron wrote:

Thanks Dane, that got it moving.

Great.

Now in the linking, getting this error. What needs configuring? Scons still puzzles me.

/usr/bin/ld: /usr/lib64/libboost_system-mt.a(error_code.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC
/usr/lib64/libboost_system-mt.a: could not read symbols: Bad value

Hmm, that's not an error I've ever seen. The '.a' library denotes a statically compiled library, which must need to be compiled with the -fPIC flag to get the right symbols exposed. How did you build/install boost? This seems like a boost install problem rather than a Mapnik/Scons issue. Normally the linker will choose the .so over the static .a lib, so I would try to reinstall boost (via source or packages to make the 'so' dynamic lib available), then clean your mapnik builds ('python scons/scons.py -c'), and try again.

Note: if you do a source install of Boost then you'll likely need to point SCons at the right library name with the BOOST_TOOLKIT=gcc42 (for example) flag.

Also, perhaps you have boost installed in /usr/lib already instead of /usr/lib64. If you do then you can point SCons there with

BOOST_INCLUDE=/usr/include and BOOST_LIBS=/usr/lib

- Dane

-Mikel

From: Dane Springmeyer <blake@...>
To: Mikel Maron <mikel_maron@...>
Cc: Mapnik users mailing-list <mapnik-users@...>
Sent: Sunday, May 31, 2009 9:56:16 AM
Subject: Re: [Mapnik-users] memory error compiling mapnik .. help?

Hey mikel. In the previous case I stopped apache which freed up the needed men to get past that one particularly expensive compile. Scons may have a low mem setting - I'll look around for that when I get a chance. A longer term solution may be to spilt apart some of that code file. Also perhaps making the pickle support an optional compile which might reduce the memory burden a bit as well.

Dane

On May 30, 2009, at 11:42 PM, Mikel Maron <mikel_maron@...> wrote:

Hi

I'm running into a problem when the compile comes to mapnik_rule.cpp.

It's basically this problem, as reported by Dane.
http://trac.mapnik.org/ticket/235

It's not a mapnik problem per se .. but wondering if anyone has advice on how to get through this compile step, without having the OS kill off process.

Thanks
Mikel
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