4.2. Static, Dynamic, and Mode options

Each of GHC's command line options is classified as either static or dynamic or mode:

Mode flags

For example, --make or -E. There may be only a single mode flag on the command line. The available modes are listed in Section 4.4, “Modes of operation”.

Dynamic Flags

Most non-mode flags fall into this category. A dynamic flag may be used on the command line, in a GHC_OPTIONS pragma in a source file, or set using :set in GHCi.

Static Flags

A few flags are "static", which means they can only be used on the command-line, and remain in force over the entire GHC/GHCi run.

The flag reference tables (Section 4.17, “Flag reference”) lists the status of each flag.