Problems building wheel for manylinux2014_ppc64le platform

[st-pasha]

I'm building a wheel for an extension which was linked with the following command:

gcc [... o files] -shared -pthread -g -m64 -lstdc++

However, running auditwheel on the resulting wheel file shows the following:

# auditwheel show dist/datatable-0.10.1-cp38-cp38-linux_ppc64le.whl

datatable-0.10.1-cp38-cp38-linux_ppc64le.whl is consistent with the
following platform tag: "linux_ppc64le".

The wheel references external versioned symbols in these system-
provided shared libraries: ld64.so.2 with versions {'GLIBC_2.17'},
libgcc_s.so.1 with versions {'GCC_3.0'}, libc.so.6 with versions
{'GLIBC_2.17'}, libstdc++.so.6 with versions {'GLIBCXX_3.4.17',
'GLIBCXX_3.4.19', 'CXXABI_1.3.3', 'GLIBCXX_3.4', 'GLIBCXX_3.4.9',
'CXXABI_1.3.5', 'GLIBCXX_3.4.15', 'CXXABI_1.3', 'GLIBCXX_3.4.14',
'GLIBCXX_3.4.18', 'GLIBCXX_3.4.11'}

The following external shared libraries are required by the wheel:
{
    "ld64.so.2": "/lib64/ld-2.17.so",
    "libc.so.6": "/lib64/libc-2.17.so",
    "libgcc_s.so.1": "/lib64/libgcc_s-4.8.5-20150702.so.1",
    "libm.so.6": "/lib64/libm-2.17.so",
    "libstdc++.so.6": "/lib64/libstdc++.so.6.0.19"
}

In order to achieve the tag platform tag "manylinux2014_ppc64le" the
following shared library dependencies will need to be eliminated:

ld64.so.2

As far as I can tell, this ld64.so.2 library is a standard system library used to implement dynamic linking for ELF files. It is definitely not the kind of library that my code is explicitly using.

So, I think one of the two things need to happen:

• either auditwheel can recognize that this is a standard system library for ppc64 platform and stop complaining about it;
• or there should be a way (perhaps via a special linker flag) to link the code so that it doesn't depend on this ld64 library; however I wasn't able to figure out what could that flag be.

[di]

This is a bug in auditwheel, the proposed fix is here: pypa/auditwheel#213.