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Migrate to GCC 10 toolchain for Linux builds

Upgrade the build toolchain to use GCC 10 (from GCC 7) for Linux builds.
Complete
$8,400.00
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Task Bounty Details

24701

Bitcoin Issue

Days

Estimated Effort

Complete

Current Status

$8,400.00

Paid in USD or equivalent BTC upon acceptance

Bitcoin Issue

Currently, Linux builds are performed with a different toolchain (GCC 7) than macOS and Windows builds, which use GCC 10. This task involves changing the build system to use GCC 10 for Linux builds.

From the original issue:

"Currently, our Linux Guix builds differ from macOS and Windows, in that they use a native GCC 7 toolchain (i.e to build glibc) and then GCC 10 to build depends and Bitcoin Core. Migrating the Linux builds to a native GCC 10 toolchain will unify us on a single native compiler and very likely solve #22458.

The main issue with performing this migration is building older glibcs (2.24, 2.27) with GCC 10. When I last tried, it was apparent that either warnings produced by the newer GCC would need to be suppressed (as glibc is built -Werror), or patches to glibc would need to be backported to address any issues."

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Prerequisite Skills

C++, Build Systems

Code Guidelines

Repository Code Guidelines Page

Definition of Done

Get a PR merged which results in a close of the linked issue

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