From 86b5d2e951eaa88cb5fed2be23fa5af85facad4a Mon Sep 17 00:00:00 2001
From: Borys Smejda <borys.smejda@gmail.com>
Date: Sat, 13 Aug 2022 19:10:10 +0200
Subject: [PATCH] Fixed CMake configuration failure (libevent#1321)

Deleted usage of CMake feature 'file(REAL_PATH'
which is available from version 3.19
with an old 'get_filename_component' so that
older version of CMake can still be used
to configure the project.
---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5016840ca2..3421ca608a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -178,8 +178,8 @@ macro(Configure_RPATH)
     # - "///" -> "/"
     # - "/////usr///" -> "//usr"
     # So it should be normalized again.
-    file(REAL_PATH "${CMAKE_INSTALL_PREFIX}" CMAKE_INSTALL_PREFIX_NORMALIZED)
 
+    get_filename_component(CMAKE_INSTALL_PREFIX_NORMALIZED "${CMAKE_INSTALL_PREFIX}" REALPATH)
     list(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX_NORMALIZED}/lib" isSystemDir)
 
     if("${isSystemDir}" STREQUAL "-1")