exec-directory

exec-directory is a variable defined in `C source code'.
Its value is

"/usr/local/libexec/emacs/25.0.50/x86_64-unknown-linux-gnu/"

• This variable may be risky if used as a file-local variable.

Documentation:
Directory for executables for Emacs to invoke.
More generally, this includes any architecture-dependent files
that are built and installed from the Emacs distribution.