discussion related to source for porting headers and methods to RTEMS and newlib

[Gedare Bloom]

email subject can be shortened. almost everything is a discussion :)

On Tue, Mar 24, 2020 at 3:49 PM Eshan Dhawan <eshandhawan51 at gmail.com> wrote:
>
> Hello everyone,
> I have identified sources to port headers and methods to RTEMS and Newlib. I have given priority to FreeBSD for the choice of source. But method not present in FreeBSD can be ported from alternative sources like NetBSD and musl.
>
Considering the simplicity, you may want to compare musl vs freebsd as well.

> -> Missing methods of math.h: I have compiled a list of methods and their sources. Some need to be implemented from scratch.
> list: Math.h missing functions
>
> -> sys/ipc.h: This header and its function can be ported from FreeBSD.
> ipc.h : https://github.com/freebsd/freebsd/blob/master/sys/sys/ipc.h
> ftok.c: https://github.com/freebsd/freebsd/blob/master/lib/libc/gen/ftok.c
>
> ->fmtmsg.h: its implementation is also present in FreeBSD.
> https://github.com/freebsd/freebsd/blob/master/include/fmtmsg.h
> https://github.com/freebsd/freebsd/blob/master/lib/libc/gen/fmtmsg.c
>
> ->spawn.h: Its implementation is in FreeBSD.
> https://github.com/freebsd/freebsd/blob/master/lib/libc/gen/posix_spawn.c
>
I'm worried about the large number of includes there. It may easily
lead you to trouble chasing down transitive include headers, like what
happened with Vaibhav before with search.h support.

> -> pselect() from <sys/select.h> : its implementation is also from FreeBSD
> https://github.com/freebsd/freebsd/blob/master/lib/libc/sys/pselect.c
>
> -> confstr() from <unistd.h>: Its implementation is from FreeBSD
> https://github.com/udp/freebsd-libc/blob/master/gen/confstr.c.
>
> I would like everyone to review it and provide your suggestions.
>
include details in your proposal also.

> Thanks
> -Eshan