$NetBSD$

Don't use the architecture suffix.

--- freespace2/CMakeLists.txt.orig	2019-11-03 18:11:22.000000000 +0000
+++ freespace2/CMakeLists.txt
@@ -23,7 +23,7 @@ ADD_EXECUTABLE(Freespace2 ${EXE_GUI_TYPE
 
 include(resources.cmake)
 
-SET_TARGET_PROPERTIES(Freespace2 PROPERTIES OUTPUT_NAME "fs2_open_${FSO_BINARY_SUFFIX}")
+SET_TARGET_PROPERTIES(Freespace2 PROPERTIES OUTPUT_NAME "fs2_open")
 
 TARGET_LINK_LIBRARIES(Freespace2 code)
 TARGET_LINK_LIBRARIES(Freespace2 platform)