[Distutils] setup.py demo.C build (gcc vs. g++) (distutils)

[Mowry, Peter]

Ever seen this error?  

 

Build Error Description:

python2.5 setup.py demo.C build

 

That creates a demo.so, and when I try to import it, it gives me the
error:

ImportError: ./demo.so: undefined symbol: __gxx_personality_v0

 

 

Hack to fix it:

I found one single helpful post about this on google:

http://www.intevation.de/pipermail/thuban-list/2003-September/000230.htm
l suggests:

Do the link step of gdalwarp manually by copying the commandline printed
by setup.py and replacing the gcc with g++

 

So I tried this, and I saw that setup.py prints the following 2
commands:

gcc -pthread -fno-strict-aliasing -DNDEBUG -g -O3 -Wstrict-prototypes
-fpermissive -fPIC
-I/tool/pandora64/.package/python-2.5/include/python2.5 -c demo.C -o
build/temp.linux-x86_64-2.5/demo.o

gcc -pthread -shared build/temp.linux-x86_64-2.5/demo.o -o
build/lib.linux-x86_64-2.5/demo.so

 

Then I simply manually rerun just the second command with g++:

g++ -pthread -shared build/temp.linux-x86_64-2.5/demo.o -o
build/lib.linux-x86_64-2.5/demo.so

 

And now the import works and so does the python spam_system() function.

 

 

Non-Hack to fix it?:

Is there a non-hack way to fix this?

 

I've seen this question on the internet but no answers so far.  I did
check --help-compiler, and it only lists --compiler=unix, not
--compiler=g++ for ex.

 

 

--Thanks 

 

 

Peter Mowry ("Pem")
SimNow Team, Software Engineer
AMD Organization
 

 

 

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