[PATCH] newlib: riscv: Fix build

[Eric Salem]

Hi Kito,

On 3/25/25 8:39 PM, Kito Cheng wrote:
> Just one more comment, don't put xlenint.h in
> newlib/libc/machine/riscv/sys, please move that into
> newlib/libc/machine/riscv
> The difference between the two is that the former will be installed
> into the toolchain, but the latter one won't.
> 
> Otherwise LGTM, also verified on my side :)

I'm trying to move the file to that directory, but now the problem I'm
facing is sys/string.h in riscv can no longer find the file. Newlib
copies the header files to the targ-include directory when building,
but only those that are in the machine and sys directories. So when I go
to build, it can't find xlenint.h anymore.

Any suggestions? Perhaps I'm doing something wrong, but looking at the
file layout of other ports, this seems intentional by Newlib, where the
libc/machine/<port> directories contain C and assembly files, and all
header files go in subdirectories.

Eric