From 2d7f6ab48470379742caf96217ab456abc172380 Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gunnar.beutner@netways.de>
Date: Tue, 12 Apr 2016 11:25:44 +0200
Subject: [PATCH] Don't overwrite config files on *NIX

fixes #11542
---
 cmake/InstallConfig.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/InstallConfig.cmake b/cmake/InstallConfig.cmake
index e4af25d5e..7f70177f9 100644
--- a/cmake/InstallConfig.cmake
+++ b/cmake/InstallConfig.cmake
@@ -26,7 +26,7 @@ function(install_if_not_exists src dest)
   string(REPLACE "/" "\\\\" nsis_dest_dir "${real_dest}")
   string(REPLACE "/" "\\\\" nsis_dest "${real_dest}/${basename_dest}")
   install(CODE "
-    if(\${CMAKE_INSTALL_PREFIX} MATCHES .*/_CPack_Packages/.* OR NOT EXISTS \"\$ENV{DESTDIR}${dest}/${src_name}\")
+    if(\${CMAKE_INSTALL_PREFIX} MATCHES .*/_CPack_Packages/.* OR NOT EXISTS \"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/\${skel_prefix}${dest}/${src_name}\")
       message(STATUS \"Installing: \$ENV{DESTDIR}${dest}/${src_name}\")
       if(\${CMAKE_INSTALL_PREFIX} MATCHES .*/_CPack_Packages/.*)
         set(skel_prefix \"share/skel/\")