Jonathan Nieder dixit:
Could you suggest a patch to arch/m68k/Makefile to do that?
No, I patched it in debian/config/m68k/defines instead. I’d rather know why upstream doesn’t use -ffreestanding on _all_ architectures. A kernel is _not_ a hosted environment, and GCC is right to bring in problems like this.
Then drop -ffreestanding from the main Makefile because it isn't needed anymore and implies -fno-builtin, which is wrong now.
This is wrong, GCC builtins are only valid on hosted platforms, not on freestanding platforms. (Nobody prevents GCC from using a memcpy builtin that uses, say, SSE instructions, which must not be used inside kernel code, for an example on a better-known architecture.) A kernel must always be compiled freestanding, as do bootloaders. At least since the advent of gcc 3.[34]. bye, //mirabilos -- “It is inappropriate to require that a time represented as seconds since the Epoch precisely represent the number of seconds between the referenced time and the Epoch.” -- IEEE Std 1003.1b-1993 (POSIX) Section B.2.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
