diff -rupN --no-dereference netgen-6.2.1910/CMakeLists.txt netgen-6.2.1910-new/CMakeLists.txt

--- netgen-6.2.1910/CMakeLists.txt	2020-02-03 22:38:37.908667940 +0100

+++ netgen-6.2.1910-new/CMakeLists.txt	2020-02-03 22:38:37.948667786 +0100

@@ -52,14 +52,14 @@ if(INSTALL_DIR)

   set(INSTALL_DIR_DEFAULT ${INSTALL_DIR})

 endif(INSTALL_DIR)

-if(UNIX)

-  message("Checking for write permissions in install directory...")

-  execute_process(COMMAND mkdir -p ${CMAKE_INSTALL_PREFIX})

-  execute_process(COMMAND test -w ${CMAKE_INSTALL_PREFIX} RESULT_VARIABLE res)

-  if(res)

-    message(WARNING "No write access at install directory, please set correct permissions")

-  endif()

-endif(UNIX)

+#if(UNIX)

+#  message("Checking for write permissions in install directory...")

+#  execute_process(COMMAND mkdir -p ${CMAKE_INSTALL_PREFIX})

+#  execute_process(COMMAND test -w ${CMAKE_INSTALL_PREFIX} RESULT_VARIABLE res)

+#  if(res)

+#    message(WARNING "No write access at install directory, please set correct permissions")

+#  endif()

+#endif(UNIX)

 if (USE_SUPERBUILD)

   project (SUPERBUILD)