Re: [Quantlib-dev] QuantLib 1.36 released

[Luigi B. <lui...@gm...>]

Hi Dirk—yes, I did a few changes.  There finally seems to be some consensus
on the tools for building Python wheels, so I'm using those now.

First, you'll need some tooling; in the CI build I'm doing `pip install
setuptools build tox` but I guess you'll install the corresponding apt
packages instead.  If you're not running the tests, you don't need tox, I
guess.

Second, forget setup.py wrap, the SWIG command is now
    $(SWIG) -python -c++ -outdir src/QuantLib -o
src/QuantLib/quantlib_wrap.cpp ../SWIG/quantlib.i
You can do it just once for all Pythons.

Third, instead of setup.py build, the build command is now
    CXXFLAGS="$(compilerflags)" CC="$(cxxcompiler)" CXX="$(cxxcompiler)"
$(PYTHON) -m build --wheel
which builds a Python wheel.  It uses Python's stable API, so the same
wheel should work for all Python versions >= 3.8.

I don't know if there's a fourth step—do you need to install the wheel in
order to package it for apt?  If so, use "$(PYTHON) -m pip install".

Hope it helps—let me know if you hit some other roadblock.

Luigi



On Tue, Oct 15, 2024 at 3:27 PM Dirk Eddelbuettel <ed...@de...> wrote:

>
> I am having an issue with QL-SWIG under 1.36. I updated QL to 1.36
> yesterday
> for Debian (and my Ubuntu PPA for 24.04; having done so a week earlier for
> the RC as well). But now QL-SWIG croaks:
>
>   fatal error: src/QuantLib/quantlib_wrap.cpp: No such file or directory
>
> I presume I need to change something (again). Currently we use a two-step
> of
> 'setup.py wrap' (no longer recognised -- I likely need to replace it ?) and
> 'setup.py build', where the latter now fails presumably because the former
> is
> not working:
>
> build-stamp:
>         dh_testdir
>         @echo "*** Running on arch $(arch) and cpu $(cpu)"
>
>         ./autogen.sh
>
>         # need to build the Makefile for R (and Ruby ?)
>         ./configure     --prefix=/usr                           \
>                         --build $(arch)
>
>         # $(MAKE)
>         (cd Python && for python in $(PYTHONS); do              \
>                                 CC="$(cxxcompiler)"             \
>                                 CXX="$(cxxcompiler)"            \
>                                 CFLAGS="$(compilerflags)"       \
>                                 CXXFLAGS="$(compilerflags)"     \
>                                 $$python setup.py wrap;         \
>                                 CC="$(cxxcompiler)"             \
>                                 CXX="$(cxxcompiler)"            \
>                                 CFLAGS="$(compilerflags)"       \
>                                 CXXFLAGS="$(compilerflags)"     \
>                                 $$python setup.py build;        \
>                         done                                    )
>
> Thanks in advance for any help!
>
> Cheers, Dirk
>
> --
> dirk.eddelbuettel.com | @eddelbuettel | ed...@de...
>