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authorMark de Wever <koraq@xs4all.nl>2022-11-09 18:08:54 +0100
committerMark de Wever <koraq@xs4all.nl>2022-12-11 20:19:46 +0100
commitd40dc417389e09b26dd4177f50a06cf9889caf2f (patch)
treed67302b1aded15192225887a62332fb9b373a2a7 /runtimes
parentba237cb26804a1759d647dc3623e3b0afcd2e25a (diff)
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[CMake] Warn when the version is older than 3.20.0.
This is a preparation to require CMake 3.20.0 after LLVM 16 has been released. This change has been discussed on discourse https://discourse.llvm.org/t/rfc-upgrading-llvms-minimum-required-cmake-version/66193 Reviewed By: #libc_vendors, MaskRay, ChuanqiXu, to268, thieta, stellaraccident, ldionne, #libc, #libc_abi, phosek Differential Revision: https://reviews.llvm.org/D137724
Diffstat (limited to 'runtimes')
-rw-r--r--runtimes/CMakeLists.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/runtimes/CMakeLists.txt b/runtimes/CMakeLists.txt
index a735096..1626b7b 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 3.13.4)
+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.