1.23.0 FreeBSD build fails: 1 showstopper mempcpy(), 1 sendfile() incompat.

[Matthias Andree]

Am 07.01.2015 um 10:11 schrieb Bartosz Gołaszewski:
> 2015-01-06 21:55 GMT+01:00 Matthias Andree <mandree at freebsd.org>:
>> Happy new year!
>>
>> I just tried to upgrade the busybox-unstable port on FreeBSD to 1.23.0,
>> but one issue of the two given below is a showstopper.
>>
>>
>> The first one pertains to an incompatibility around sendfile. Easily
>> sidestepped by deconfiguring it.
>>
>>> libbb/copyfd.c:12:27: error: sys/sendfile.h: No such file or directory
>>> libbb/copyfd.c: In function 'bb_full_fd_action':
>>> libbb/copyfd.c:65: warning: passing argument 3 of 'sendfile' makes integer from pointer without a cast
>>> libbb/copyfd.c:65: error: too few arguments to function 'sendfile'
>>
>> FreeBSD's sendfile() is documented here:
>> <https://www.freebsd.org/cgi/man.cgi?query=sendfile&apropos=0&sektion=2&manpath=FreeBSD+10.1-RELEASE&arch=default&format=html>
>>
> 
> The problem with FreeBSD's sendfile() is that it's more limited than
> the one in Linux. It requires the destination descriptor to be
> associated with a socket (like in Linux before 2.6.33). It's useless
> in case of bb_full_fd_action(). This is why commit 202d9a64 was
> merged.

That was the minor part because I can disable it by build configuration.

What about mempcpy()?  That is a showstopper.