building with CGAL 5 about pygalmesh HOT 8 CLOSED

Joachim Reichel suggests it needs
libraries=["stdc++", "gmp", "mpfr"]

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=946234

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The relationship between cmake and setup.py seems to complicate the build conditions.

Joachim says the mere presence of cmake means it is invoked in pybuild build, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=946233.

But it doesn't work that way for me. For me it's either dh --buildsystem=pybuild which does not invoke cmake, or dh --buildsystem=cmake, not clear what that does to the python build.

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This seems like it's related to pypa/setuptools#1732 (comment): setuptools indeed uses the C compiler, not C++, to compile C++ projects. Only the linker step uses CXX. Does it not on Debian?

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The relationship between cmake and setup.py seems to complicate the build conditions.

Hm. Well, the CMake files aren't terribly important to me, but sometimes I use them to debug which is why I don't want to toss them completely. If we can find another way of making this work, that'd be great.

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If we're clear on the intended role of cmake (intended for developer debugging only) then Debian can just ignore it. Perhaps a comment could be added to CMakeLists.txt or README to make that clear

The failing CGAL 5 build is documented at https://buildd.debian.org/status/package.php?p=pygalmesh
x86_64-linux-gnu-gcc is used for the linking step. This is with python3.8, so it could be possible that setuptools needs to be updated for the python3.8 context.

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Fixing this right now.

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Alright, all done now.

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Thanks, will test.

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