-mcpu=
Set architecture type, register usage, choice of mnemonics, and instruction scheduling parameters for machine type. Supported values are rios, rios1, rsc, rios2, rs64a, 601, 602, 603, 603e, 604, 604e, 620, 630, 740, 7400, 7450, 750, power, power2, powerpc, 403, 505, 801, 821, 823, and 860 and common.
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The other options specify a specific processor. Code generated under those options will run best on that processor, and may not run at all on others.
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-mcall-solaris
On System V.4 and embedded PowerPC systems compile code for the Solaris operating system.