Hi Gordon, Ken,
Thanks for your useful explainations. Neither of them solved my
problem fully, but the combination did. :-)
To document this for future readers, this is what I did, which is
different from the approach taken by the PIP package, but allows
for offline-building just from the pristine qpid-proton source.
I decided to reuse as much of the original build process as possible.
So I disabled everything except for the Python bindings and built
qpid-proton normally:
cmake \
-DBUILD_CPP=OFF -DBUILD_PERL=OFF -DBUILD_RUBY=OFF -DBUILD_JAVA=OFF \
-DBUILD_GO=OFF -DBUILD_JAVASCRIPT=OFF -DBUILD_PHP=OFF
make -j 4
Now, all I needed to do was to assemble the second last build results,
that is, all *.o files of Proton-C and Proton-Python. Listing them
was fairly straight forward:
find \
proton-c/CMakeFiles/qpid-proton.dir \
proton-c/bindings/python/CMakeFiles/_cproton.dir \
-name '*.o'
Using this as a sub command, I linked them together into a single *.so
file, taking care of the OpenSSL dependency:
gcc \
-shared \
$(find \
proton-c/CMakeFiles/qpid-proton.dir \
proton-c/bindings/python/CMakeFiles/_cproton.dir \
-name '*.o') \
$(pkg-config openssl --libs) \
-o _cproton.so
Interestingly, the resulting *.so had very few dependencies in total,
but it worked! I did not even need link to "libpython2.7.so.*".
$ ldd _cproton.so
linux-vdso.so.1 (0x00007ffe98189000)
libssl.so.1.0.2 => /usr/lib/x86_64-linux-gnu/libssl.so.1.0.2
(0x00007f37510b2000)
libcrypto.so.1.0.2 => /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.2
(0x00007f3750c4f000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f37508ad000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f37506a9000)
/lib64/ld-linux-x86-64.so.2 (0x000055b75c64f000)
Finally, I stripped debug symbols and similar from _cproton.so to
reduce its size, which was not necessary but a matter of taste:
strip -s _cproton.so
Afterwards, I needed to install just the following files:
_cproton.so
proton-c/bindings/python/cproton.py
proton-c/bindings/python/proton/*.py
Regards,
Volker
--
Volker Diels-Grabsch
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