Hi, SpeexDSP 1.2rc3 has been released, which should fix build issues with NEON or when building without the Speex Codec library. Both problems were due to separate header files which were not included in the 1.2rc2 tarball. You can grab it here: http://downloads.xiph.org/releases/speex/speexdsp-1.2rc3.tar.gz Best, Tristan