From a9cae5e31489a7359669e91b06a688669a442869 Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Tue, 3 Aug 2021 17:17:22 +0300
Subject: [PATCH] mdbx-cmake: avoid CMake warning about compatibility with
 3.8.2

---
 CMakeLists.txt       | 8 ++++++--
 cmake/compiler.cmake | 9 +++++++--
 cmake/profile.cmake  | 9 +++++++--
 cmake/utils.cmake    | 9 +++++++--
 4 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e74432b0..87b69424 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,10 +34,14 @@
 ##  The Future will (be) Positive. Всё будет хорошо.
 ##
 
-cmake_minimum_required(VERSION 3.8.2)
+if(CMAKE_VERSION VERSION_LESS 3.12)
+  cmake_minimum_required(VERSION 3.8.2)
+else()
+  cmake_minimum_required(VERSION 3.12)
+endif()
 
 cmake_policy(PUSH)
-cmake_policy(VERSION 3.8.2)
+cmake_policy(VERSION ${CMAKE_MINIMUM_REQUIRED_VERSION})
 if(NOT CMAKE_VERSION VERSION_LESS 3.15)
   cmake_policy(SET CMP0091 NEW)
 endif()
diff --git a/cmake/compiler.cmake b/cmake/compiler.cmake
index 8ab05b52..7f27d4dd 100644
--- a/cmake/compiler.cmake
+++ b/cmake/compiler.cmake
@@ -13,9 +13,14 @@
 ##  limitations under the License.
 ##
 
-cmake_minimum_required(VERSION 3.8.2)
+if(CMAKE_VERSION VERSION_LESS 3.12)
+  cmake_minimum_required(VERSION 3.8.2)
+else()
+  cmake_minimum_required(VERSION 3.12)
+endif()
+
 cmake_policy(PUSH)
-cmake_policy(VERSION 3.8.2)
+cmake_policy(VERSION ${CMAKE_MINIMUM_REQUIRED_VERSION})
 
 if(CMAKE_VERSION MATCHES ".*MSVC.*" AND CMAKE_VERSION VERSION_LESS 3.16)
   message(FATAL_ERROR "CMake from MSVC kit is unfit! "
diff --git a/cmake/profile.cmake b/cmake/profile.cmake
index 66f4ed87..0d028d32 100644
--- a/cmake/profile.cmake
+++ b/cmake/profile.cmake
@@ -13,9 +13,14 @@
 ##  limitations under the License.
 ##
 
-cmake_minimum_required(VERSION 3.8.2)
+if(CMAKE_VERSION VERSION_LESS 3.12)
+  cmake_minimum_required(VERSION 3.8.2)
+else()
+  cmake_minimum_required(VERSION 3.12)
+endif()
+
 cmake_policy(PUSH)
-cmake_policy(VERSION 3.8.2)
+cmake_policy(VERSION ${CMAKE_MINIMUM_REQUIRED_VERSION})
 
 include(CheckLibraryExists)
 check_library_exists(gcov __gcov_flush "" HAVE_GCOV)
diff --git a/cmake/utils.cmake b/cmake/utils.cmake
index fcfcb5b6..cbd723f5 100644
--- a/cmake/utils.cmake
+++ b/cmake/utils.cmake
@@ -13,9 +13,14 @@
 ##  limitations under the License.
 ##
 
-cmake_minimum_required(VERSION 3.8.2)
+if(CMAKE_VERSION VERSION_LESS 3.12)
+  cmake_minimum_required(VERSION 3.8.2)
+else()
+  cmake_minimum_required(VERSION 3.12)
+endif()
+
 cmake_policy(PUSH)
-cmake_policy(VERSION 3.8.2)
+cmake_policy(VERSION ${CMAKE_MINIMUM_REQUIRED_VERSION})
 
 macro(add_compile_flags languages)
   foreach(_lang ${languages})