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3.17.37 RL78 Options

Links in additional target libraries to support operation within a simulator.
Specifies the type of hardware multiplication support to be used. The default is none, which uses software multiplication functions. The g13 option is for the hardware multiply/divide peripheral only on the RL78/G13 targets. The rl78 option is for the standard hardware multiplication defined in the RL78 software manual.
Make the double data type be 64 bits (-m64bit-doubles) or 32 bits (-m32bit-doubles) in size. The default is -m32bit-doubles.