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Date: Thu, 23 Apr 2020 12:05:27 +1000
From: Tom Storey <>
Subject: Building for m68k

Hi all.

Is anyone out there particularly familiar with building musl for the m68k?

I was able to successfully build it, but then later discovered that it
would appear to be targeting 68020+ processors more specifically. I would
like to build for the earlier 680[01]0's.

Specific examples are to do with (at least) aio where some atomic
instructions are used (e.g. cas - compare and swap) which only exist for
the 68020 and later, but not for earlier processors.

Thus, adding -m68000 to the CFLAGS env variable when trying to do a rebuild
results in a failure complaining that the 68020+ is required. I dont know
what else is hiding away in the rest of it that will also be
incompatible... :-)

Any suggestions, pointers, tips would be greatly appreciated.


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