DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 60BLC5ah3734959
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 74D694BA540B
MIME-Version: 1.0
Date: Sun, 11 Jan 2026 23:11:00 +0200
Message-ID: <CAB2Wiyzf+1E_DJ2ofNEJVE4KVR1QytebgjwMixQkMcx7DSJ1jQ@mail.gmail.com>
Subject: Request to update libc++ related packages for current Clang/LLVM
 toolchain
To: cygwin AT cygwin DOT com
From: Florin via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Florin <tf1568 AT gmail DOT com>
Content-Type: text/plain; charset="utf-8"
Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>
Content-Transfer-Encoding: 8bit

Hello Cygwin list,

I’ve noticed that the Clang/LLVM stable packages in Cygwin are at version
20.1.x, while the libc++-devel, libc++1, libc++abi-devel, libc++abi1,
libunwind-devel and libunwind1 packages are still at 8.0.1. According to
the package summaries, they were last updated in 2019.

This version mismatch can present issues using modern C++ features and
makes it hard to use a complete LLVM toolchain with libc++ on Cygwin.

I searched the Cygwin mailing list archives for prior posts about updating
libc++, but I didn’t find a clear request or discussion about coordinating
libc++ versions with newer Clang.

Could you clarify if there is a plan to update libc++ to match more recent
LLVM releases, or if the recommended C++ standard library for newer and
future Clang versions on Cygwin should be libstdc++.

Thank you for your time and I'm grateful for the effort you all put into
this project.

Respectfully,
Florin Tulba

-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple