Add CMake 4.2 result variable for OpenSSL

Author: petk

cmake/cmake/modules/FindOpenSSL.cmake

@@ -0,0 +1,18 @@
+#[=============================================================================[
+# FindOpenSSL
+
+This module overrides the upstream CMake `FindOpenSSL` module with few
+customizations:
+
+* Added OpenSSL_VERSION result variable for CMake < 4.2.
+
+See: https://cmake.org/cmake/help/latest/module/FindOpenSSL.html
+#]=============================================================================]
+
+# Find package with upstream CMake find module. Absolute path prevents the
+# maximum nesting/recursion depth error on some systems, like macOS.
+include(${CMAKE_ROOT}/Modules/FindOpenSSL.cmake)
+
+if(CMAKE_VERSION VERSION_LESS 4.2)
+  set(OpenSSL_VERSION "${OPENSSL_VERSION}")
+endif()