default or selected kernelversion does not have config value CONFIG_OSF4_COMPAT.
Result is shown for kernelversion 6.9.9
OSF/1 v4 readv/writev compatibility
configname: CONFIG_OSF4_COMPAT
Linux Kernel Configuration
└─>Executable file formats
└─>OSF/1 v4 readv/writev compatibility
In linux kernel since version 2.6.12
Say Y if you are using OSF/1 binaries (like Netscape and Acrobat)
with v4 shared libraries freely available from Compaq. If you're
going to use shared libraries from Tru64 version 5.0 or later, say N.
with v4 shared libraries freely available from Compaq. If you're
going to use shared libraries from Tru64 version 5.0 or later, say N.