Possibly wire up cmake?

indra/newview/CMakeLists.txt

@@ -1559,6 +1559,11 @@ file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/viewer_version.txt"
            "${VIEWER_SHORT_VERSION}\n")
 
 configure_file(llviewerbuildconfig.h.in llviewerbuildconfig.h @ONLY)
+
+if (LINUX)
+  configure_file(/linux-tools/refresh_desktop_app_entry.sh /linux-tools/refresh_desktop_app_entry.sh @ONLY)
+endif(LINUX)
+
 LIST(APPEND viewer_HEADER_FILES ${CMAKE_CURRENT_BINARY_DIR}/llviewerbuildconfig.h)
 
 if (WINDOWS)