Merge pull request #4210 from facebook/cm310

Update cmake minimum requirement to 3.10

build/cmake/CMakeLists.txt

@@ -7,7 +7,7 @@
 # in the COPYING file in the root directory of this source tree).
 # ################################################################
 
-cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
 
 # As of 2018-12-26 ZSTD has been validated to build with cmake version 3.13.2 new policies.
 # Set and use the newest cmake policies that are validated to work

build/cmake/CMakeModules/AddZstdCompilationFlags.cmake

@@ -1,11 +1,10 @@
 include(CheckCXXCompilerFlag)
 include(CheckCCompilerFlag)
-# VERSION_GREATER_EQUAL requires CMake 3.7 or later.
-# https://cmake.org/cmake/help/latest/command/if.html#version-greater-equal
-if (CMAKE_VERSION VERSION_LESS 3.18)
-    set(ZSTD_HAVE_CHECK_LINKER_FLAG false)
-else ()
+
+if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.18)
     set(ZSTD_HAVE_CHECK_LINKER_FLAG true)
+else ()
+    set(ZSTD_HAVE_CHECK_LINKER_FLAG false)
 endif ()
 if (ZSTD_HAVE_CHECK_LINKER_FLAG)
     include(CheckLinkerFlag)