diff -rupN --no-dereference netgen-6.2.2103/ng/CMakeLists.txt netgen-6.2.2103-new/ng/CMakeLists.txt
--- netgen-6.2.2103/ng/CMakeLists.txt	2021-06-07 12:54:51.823239332 +0200
+++ netgen-6.2.2103-new/ng/CMakeLists.txt	2021-06-07 12:54:51.871239333 +0200
@@ -21,6 +21,7 @@ if(USE_GUI)
     )
 
     add_executable(netgen ngappinit.cpp)
+    set_target_properties(netgen PROPERTIES OUTPUT_NAME netgen-mesher)
     if(WIN32)
       target_sources(netgen PRIVATE ../windows/netgen.rc)
     endif(WIN32)