$OpenBSD: patch-CMakeLists_txt,v 1.3 2021/06/25 20:56:03 sthen Exp $

zlib 1.2.7 not available on OpenBSD

Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -233,7 +233,7 @@ if(NOT DISABLE_DEPENDENCY_VERSION_CHECKS)
   set(MINIMUM_BOOST_VERSION 1.61)  # @warning should be 1.66, but H18 ships with 1.61
   set(MINIMUM_ILMBASE_VERSION 2.2) # @warning should be 2.3, but H18 ships with 2.2
   set(MINIMUM_OPENEXR_VERSION 2.2) # @warning should be 2.3, but H18 ships with 2.2
-  set(MINIMUM_ZLIB_VERSION 1.2.7)
+  set(MINIMUM_ZLIB_VERSION 1.2.3)
   set(MINIMUM_TBB_VERSION 2018.0)
   set(MINIMUM_LLVM_VERSION 6.0.0)
 
