Full name and Meanings of prefix "g", "W", "f", "m" in GCC options

Question

In GCC, there are many options begin with "g", "W", "f" or "m".

• "g": -glevel -ggdb
• "W": -Wa, -Wl, -Wall
• "f": -fno-access-control, -fno-rtti
• "m": -masm

I don't know the full names and meanings of "g", "W", "f", "m".

Answer 1

• G → GCC debugging (enables debugging messages)

• W → warning (w disables all warning messages, Wall enables all warnings)

• F → function (deals with functions that are treated by the compiler)

• M → make (outputs a tree map of the source file and all included file, kind of a Makefile).

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