7.8.3.2 Miscellaneous

Pass option as an option to the linker. You can use this to supply system-specific linker options, which GCC does not know how to recognize. If you want to pass an option that takes a separate argument, you must use -Xlinker twice, once for the option and once for the argument. For example, to pass -assert definitions, you must write `-Xlinker -assert -Xlinker definitions'. It does not work to write -Xlinker '-assert definitions' because this passes the entire string as a single argument, which is not what the linker expects. When using the GNU linker, it is usually more convenient to pass arguments to linker options using the option=value syntax than as separate arguments. For example, you can specify `-Xlinker -Map=output.map' rather than `-Xlinker -Map -Xlinker output.map'. Other linkers may not support this syntax for command-line options.