Looks like 4.13 introduces a new incompatibility

[Jason A. Donenfeld]

On Mon, Jul 10, 2017 at 4:56 AM, Bruno Wolff III <bruno at wolff.to> wrote:
> On Mon, Jul 10, 2017 at 04:01:04 +0200,
>  "Jason A. Donenfeld" <Jason at zx2c4.com> wrote:
>>
>> Hey Bruno,
>>
>> Thanks for the heads up. Does this fix it?
>>
>>
>> https://git.zx2c4.com/WireGuard/commit/?id=dd007ad550b3def8a858e57aa718af9b00047a28
>
>
> It looks like it fixed the problem. (At least device.o gets built.) But it
> seems there is another problem.
>
> [bruno at wolff src]$ make clean all
> make -C /lib/modules/4.13.0-0.rc0.git3.1.fc27.i686+PAE/build
> M=/home/bruno/WireGuard/src clean
> make[1]: Entering directory
> '/usr/src/kernels/4.13.0-0.rc0.git3.1.fc27.i686+PAE'
>  CLEAN   /home/bruno/WireGuard/src/.tmp_versions
> make[1]: Leaving directory
> '/usr/src/kernels/4.13.0-0.rc0.git3.1.fc27.i686+PAE'
> make -C tools clean
> make[1]: Entering directory '/home/bruno/WireGuard/src/tools'
> rm -f wg *.o *.d
> make[1]: Leaving directory '/home/bruno/WireGuard/src/tools'
> make -C /lib/modules/4.13.0-0.rc0.git3.1.fc27.i686+PAE/build
> M=/home/bruno/WireGuard/src modules
> make[1]: Entering directory
> '/usr/src/kernels/4.13.0-0.rc0.git3.1.fc27.i686+PAE'
>  CC [M]  /home/bruno/WireGuard/src/main.o
>  CC [M]  /home/bruno/WireGuard/src/noise.o
>  CC [M]  /home/bruno/WireGuard/src/device.o
>  CC [M]  /home/bruno/WireGuard/src/peer.o
>  CC [M]  /home/bruno/WireGuard/src/timers.o
>  CC [M]  /home/bruno/WireGuard/src/data.o
>  CC [M]  /home/bruno/WireGuard/src/send.o
>  CC [M]  /home/bruno/WireGuard/src/receive.o
>  CC [M]  /home/bruno/WireGuard/src/socket.o
>  CC [M]  /home/bruno/WireGuard/src/config.o
>  CC [M]  /home/bruno/WireGuard/src/hashtables.o
>  CC [M]  /home/bruno/WireGuard/src/routingtable.o
>  CC [M]  /home/bruno/WireGuard/src/ratelimiter.o
>  CC [M]  /home/bruno/WireGuard/src/cookie.o
> /home/bruno/WireGuard/src/cookie.c: In function ‘cookie_message_create’:
> /home/bruno/WireGuard/src/cookie.c:156:2: error: implicit declaration of
> function ‘get_random_bytes_wait’; did you mean ‘get_random_bytes_arch’?
> [-Werror=implicit-function-declaration]
>  get_random_bytes_wait(dst->nonce, COOKIE_NONCE_LEN);
>  ^~~~~~~~~~~~~~~~~~~~~
>  get_random_bytes_arch
> cc1: some warnings being treated as errors
> make[2]: *** [scripts/Makefile.build:303:
> /home/bruno/WireGuard/src/cookie.o] Error 1

I need to annoy Ted Tso about this. It'll get merged for rc1 or rc2.

Jason