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Check CMake minor version support for VERSION_LESS_EQUAL

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VERSION_LESS_EQUAL is only available to CMake 3.7+. This adds additional
logic to check that CMAKE_MINOR_VERSION is at least 7.

Fixes #1489
This commit is contained in:
Erik Webb 2019-01-03 15:26:20 -05:00
parent f9e4f89252
commit 9448a3790d
1 changed files with 2 additions and 2 deletions
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4
build/cmake/CMakeLists.txt
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@ -12,9 +12,9 @@ cmake_minimum_required(VERSION 2.8.9 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
set(ZSTD_MAX_VALIDATED_CMAKE_VERSION "3.13.2")
if("${CMAKE_MAJOR_VERSION}" LESS 3) # Cmake version 2 does not understand the VERSION_LESS_EQUAL operator
if("${CMAKE_MAJOR_VERSION}" LESS 3) # Cmake version <3.7 does not understand the VERSION_LESS_EQUAL operator
set(ZSTD_CMAKE_POLICY_VERSION "${CMAKE_VERSION}")
else()
elseif(("${CMAKE_MAJOR_VERSION}" EQUAL 3 AND "${CMAKE_MINOR_VERSION}" GREATER 6) OR ("${CMAKE_MAJOR_VERSION}" GREATER 3))
if("${CMAKE_VERSION}" VERSION_LESS_EQUAL "${ZSTD_MAX_VALIDATED_CMAKE_VERSION}")
set(ZSTD_CMAKE_POLICY_VERSION "${CMAKE_VERSION}")
else()