latest gcc / gxx 7.5.0 builds have GLIBC_2.14 symbols

[kkraus14]

Solution to issue cannot be found in the documentation.

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Issue

Looks like the recent gcc 7.5.0 builds somehow got GLIBC_2.14 symbols in them which breaks using them in cos6 environments:

(dev) keith@Keith-PC:~/scratch$ objdump -T bin/x86_64-conda-linux-gnu-c++ | grep GLIBC_2.14
0000000000000000      DF *UND*  0000000000000000  GLIBC_2.14  memcpy

(dev) keith@Keith-PC:~/scratch$ objdump -T bin/x86_64-conda-linux-gnu-cc | grep GLIBC_2.14
0000000000000000      DF *UND*  0000000000000000  GLIBC_2.14  memcpy

This is breaking the PR here: conda-forge/nvcc-feedstock#80

cc @beckermr @xhochy @jakirkham @isuruf to consolidate discussion from gitter / the PR linked

Installed packages

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Environment info

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[jakirkham]

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