From 4b859931e6553ee97d92a4eeaebd28224ec92687 Mon Sep 17 00:00:00 2001
From: "Ryan A. Colyer" <ryancolyer@yahoo.com>
Date: Sat, 19 Feb 2022 16:27:18 -0500
Subject: [PATCH] Switch to an afterwards check for CGAL version

---
 CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5970b2c5a2..7302bf150e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -303,7 +303,11 @@ endif()
 # Reconsider this after CGAL 5.4: https://github.com/CGAL/cgal/pull/6029
 set(ORIGINAL_CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH})
 set(CGAL_DO_NOT_WARN_ABOUT_CMAKE_BUILD_TYPE TRUE)
-find_package(CGAL 5.0 REQUIRED COMPONENTS Core)
+# Some older versions do not match with CGAL 5.0 REQUIRED, so we check after.
+find_package(CGAL REQUIRED COMPONENTS Core)
+if (${CGAL_MAJOR_VERSION} LESS 5)
+  message(FATAL_ERROR "CGAL: ${CGAL_MAJOR_VERSION}.${CGAL_MINOR_VERSION} less than required minimum version 5.0")
+endif()
 message(STATUS "CGAL: ${CGAL_MAJOR_VERSION}.${CGAL_MINOR_VERSION}")
 target_compile_definitions(OpenSCAD PRIVATE ENABLE_CGAL)
 # The macro `CGAL_DEBUG` allows to force CGAL assertions, even if `NDEBUG` is defined,