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https://issues.apache.org/jira/browse/PROTON-2094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16976498#comment-16976498
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Jiri Daněk commented on PROTON-2094:
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I did not figure it out with venv, but I managed to point CMake to pyenv Python
with
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-DPYTHON_EXECUTABLE=$(pyenv root)/versions/3.7.5/bin/python
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It is important to have a python so library, which is accomplished with
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export PYTHON_CONFIGURE_OPTS="--enable-shared"
pyenv install 3.7.5
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If this is not done, using static library fails like this
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[100%] Linking C shared module _cproton.so
/usr/bin/ld: /.pyenv/versions/3.7.5/lib/libpython3.7m.a(ceval.o): relocation
R_X86_64_PC32 against symbol `_PyRuntime' can not be used when making a shared
object; recompile with -fPIC
/usr/bin/ld: final link failed: Bad value
collect2: error: ld returned 1 exit status
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My Dockerfile
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# docker build -t qpid-proton:ubuntu -f tools/docker/ubuntu.Dockerfile .
FROM library/ubuntu:18.04 as buildbase
RUN apt-get update
RUN apt-get install -y make build-essential cmake swig libpython3-dev
libsasl2-dev libjsoncpp-dev
RUN mkdir /source /build /install
FROM buildbase as pyenv
RUN apt-get install -y git
RUN git clone https://github.com/yyuu/pyenv.git /.pyenv
ENV PYENV_ROOT="/.pyenv"
ENV PATH="/.pyenv/bin:${PATH}"
# https://github.com/pyenv/pyenv/wiki
RUN DEBIAN_FRONTEND=noninteractive apt-get install -yq --no-install-recommends
make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev
libsqlite3-dev wget curl llvm libncurses5-dev xz-utils tk-dev libxml2-dev
libxmlsec1-dev libffi-dev liblzma-dev
ENV PYTHON_CONFIGURE_OPTS="--enable-shared"
RUN pyenv install 3.7.5
RUN $(pyenv root)/versions/3.7.5/bin/python -m venv /venv
ENV PATH=/venv/bin:${PATH}
WORKDIR /build
ADD . /source/
RUN cmake .. /source -DCMAKE_INSTALL_PREFIX=/install -DBUILD_BINDINGS=python
-DPYTHON_EXECUTABLE=$(pyenv root)/versions/3.7.5/bin/python
RUN make
# RUN make install
# RUN ctest -V
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> Support Python 3.7
> ------------------
>
> Key: PROTON-2094
> URL: https://issues.apache.org/jira/browse/PROTON-2094
> Project: Qpid Proton
> Issue Type: Improvement
> Components: python-binding
> Affects Versions: proton-c-0.29.0
> Environment: Ubuntu 18.04
> Reporter: Omer Katz
> Assignee: Andrew Stitcher
> Priority: Major
> Labels: build, features
> Fix For: proton-c-future
>
>
> I tried building the bindings locally on Python 3.7 and it didn't work.
> I checked setup.py and Python 3.7 is not listed under the supported versions.
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