E Options

E
Causes the preprocessor to send output to stdout.
early-template-check
Lets you semantically check template function template prototypes before instantiation.
EH
Specifies the model of exception handling to be performed.
EP
Causes the preprocessor to send output to stdout, omitting #line directives.
export
Enables support for the C++ export template feature.
export-dir
Specifies a directory name for the exported template search path.