For dylib crates, warn about GNU ld <=2.28 - #66839

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pnkfelix wants to merge 4 commits into

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pnkfelix:issue-61539-hack-warn-prior-to-ld-version-2.29

Commits on Dec 4, 2019

A heuristic diagnostic to try to help prevent issues related to old GNU ld bugs like issue 61539.
pnkfelix
committed
d635392
Refine warning to fire *solely* on dylib, not (dylib|proc-macro), to reduce false-positive rate.
pnkfelix
committed
a29d805
revised version parsing to handle arbitrary leading strings, rather than assuming it starts with "GNU ld version "
pnkfelix
committed
357542f
Explicitly check that we are looking at GNU ld, and otherwise skip the check.
pnkfelix
committed
c4a76c4