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On 07/02/18 09:48, Dmitry V. Levin wrote:
On Mon, Jan 01, 2018 at 11:35:41PM +0300, Dmitry V. Levin wrote:On Mon, Jan 01, 2018 at 01:43:53AM +0000, Joseph Myers wrote:On Sat, 30 Dec 2017, Dmitry V. Levin wrote:To implement a proper multilib sys/ptrace.h on aarch64, arm/sys/ptrace.h has to be used instead of aarch64/sys/ptrace.h with all arm-specific definitions ifdef'ed.ARM and AArch64 are separate toolchain ports requiring separate compilers. There is no support for multilib headers supporting both in the same header. (Debian/Ubuntu multiarch configurations put all bits/ and sys/ headers in multiarch directory arrangements so could handle having both versions of a sys/ header installed without problems.)Sure. My comment is addressed to people who might consider implementing multilib headers on aarch64 in the future.Any more comments? Is the change OK?
no, multilib header support is not wanted with arm and aarch64, they are separate targets. i thought users of ptrace.h just include the linux asm/ptrace.h anyway, so glibc does not need to track linux uapi. (at least gdb does that in its linux specific code)
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