[libcxx-commits] [libcxx] [libc++] Update the CMake version we use in the CI (PR #215783)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 created https://github.com/llvm/llvm-project/pull/215783

LLVM is raising the minimum CMake version to 3.31.0. We're currently using an older version, so we need to upgrade. To make sure things work with all supported versions this updates to the now oldest supported version instead of something more recent (which we've done previously).


>From f2fef2a9d80d9fd81fbf4b3704f0ac67d3ba8fd2 Mon Sep 17 00:00:00 2001
From: Nikolas Klauser <nikolasklauser at berlin.de>
Date: Wed, 12 Aug 2026 13:38:17 +0200
Subject: [PATCH] [libc++] Update the CMake version we use in the CI

---
 libcxx/utils/ci/docker/linux-builder-base.dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libcxx/utils/ci/docker/linux-builder-base.dockerfile b/libcxx/utils/ci/docker/linux-builder-base.dockerfile
index 08306f84b1033..98641bef91bd9 100644
--- a/libcxx/utils/ci/docker/linux-builder-base.dockerfile
+++ b/libcxx/utils/ci/docker/linux-builder-base.dockerfile
@@ -137,7 +137,7 @@ EOF
 RUN <<EOF
     # Install a recent CMake
     set -e
-    wget https://github.com/Kitware/CMake/releases/download/v3.24.4/cmake-3.24.4-linux-x86_64.sh -O /tmp/install-cmake.sh
+    wget https://github.com/Kitware/CMake/releases/download/v3.31.0/cmake-3.31.0-linux-x86_64.sh -O /tmp/install-cmake.sh
     sudo bash /tmp/install-cmake.sh --prefix=/usr --exclude-subdir --skip-license
     rm /tmp/install-cmake.sh
 EOF