Rock Smash is now a TM found in the outer part of Pinwheel Forest. A girl next to a sign will give it you.
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In this game, rock smash is not an HM, it is a TM.
Rock Smash is not a HM, it's a TM. You can get it from a Battle Girl outside Pinwheel Forest
You use rock smash and can sometimes find fossils.
rock smash isn't in Pokemon red version
You can't. for some reason they did make rock smash an HM in gen 5.