I am building Sage on a 32-bit Linux Docker (https://github.com/mkoeppe/docker-images/tree/master/sagemath-buildenv-32bit).

Building ecl fails with this error: getcontext failed: Use another register retrieval method?

This is solved with a patch that is a backport from the patch mentioned here
bdwgc/bdwgc#133
(branch here: https://github.com/mkoeppe/bdwgc/tree/gc7_2f_sage)

Upstream: Fixed upstream, but not in a stable release.

CC: @dimpase @jdemeyer @embray @kiwifb

Component: packages: standard

Author: Matthias Koeppe

Branch/Commit: bf44c21

Reviewer: François Bissey

Issue created by migration from https://trac.sagemath.org/ticket/21474