From d0398d3593ba030db83b888370f8f0f3025c296e Mon Sep 17 00:00:00 2001
From: Mark de Wever <koraq@xs4all.nl>
Date: Sat, 18 Mar 2023 20:32:43 +0100
Subject: Revert "Reland "[CMake] Bumps minimum version to 3.20.0.""

This reverts commit a72165e5df59032cdd54dcb18155f2630d73abd1.

Some buildbots have not been updated yet.
---
 runtimes/CMakeLists.txt | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'runtimes')

diff --git a/runtimes/CMakeLists.txt b/runtimes/CMakeLists.txt
index d4025644d128..50f782205ab4 100644
--- a/runtimes/CMakeLists.txt
+++ b/runtimes/CMakeLists.txt
@@ -1,5 +1,12 @@
 # This file handles building LLVM runtime sub-projects.
-cmake_minimum_required(VERSION 3.20.0)
+cmake_minimum_required(VERSION 3.13.4)
+if ("${CMAKE_VERSION}" VERSION_LESS "3.20.0")
+  message(WARNING
+    "Your CMake version is ${CMAKE_VERSION}. Starting with LLVM 17.0.0, the "
+    "minimum version of CMake required to build LLVM will become 3.20.0, and "
+    "using an older CMake will become an error. Please upgrade your CMake to "
+    "at least 3.20.0 now to avoid issues in the future!")
+endif()
 project(Runtimes C CXX ASM)
 
 # Add path for custom and the LLVM build's modules to the CMake module path.
-- 
cgit v1.2.1