There are at least three different issues. The first thing you mentioned relates to SSE2 extension on i386 and already has a fix[1] in Git. The second one because of the lack of release architectures in files webrtc_dsp/rtc_base/system/arch.h and webrtc_dsp/typedefs.h. Actually, those lists need to be extended. The third issue is caused by system headers on GNU/Hurd and kFreeBSD.
[1]: https://salsa.debian.org/debian/libtgvoip/commit/5bb9a8bdf260b528f589bd83400ade1476c94702
