• Removed zombie dependancy on clang since system clang now works
• Now uses python3 by default remove python2 dependancy
• split the VOLK project into separate port

Change log from upstream follows

[3.8.1.0-rc1] - 2020-02-16

Changed

Project Scope

• clang-tidy improvements
  • Throw exceptions by value, catch by reference
  • emplace_back where applicable
  • empty() instead of vector::size() == 0

Fixed

Project scope

• FindQwt paths
• floatAlmostEqual unittest assert function wrongly passing on sequence types
• Only require boost unittest when testing is enabled
• FindLOG4CPP typo

gnuradio-runtime

• block gateway shadowed system port
• Flaky message passing unit test contained timeout (not the test's job)
• ctrlport/rpcaggregator & Co: removed storage of references to scope-lifetime objects
• Sine table generation python was wrong
• get_tags_in_range for delay < (end-start)
• premature tag pruning

gr_modtool

• wrong use of input -> raw_input
• allow empty argument list
• testing
• check for and deny TSB under Python
• QA addition bugs

gr-analog

• clipping in FM receiver: remove superfluous gain
• C++ generation for multiple blocks

gr-audio

• portaudio source: lock acquisition

gr-blocks

• broken rotator workaround

gr-digital

• map_bb buffer overflow
• map_bb thread safety
• additive_scrambler count based reset

gr-fec

• heap corruption in async_decoder
• cc_encoder was broken for constraint lengths > 8

gr-fft

• restore Boost 1.53 compat

gr-qtgui

• no longer requiring unnecessary key in edit_box_msg

gr-uhd

• fixed examples under Py3
• multichannel objects not populating channels

GRC

• several issues with YAML files
• nested objects now properly populate namespaces
• comments now included in block bounds calculation
• Wiki documentation link removed from OOT blocks' docs tab
• Dragging connections to auto-hide ports works now

Added

Project Scope

• Codec2 development branch / future compat
• Boost 1.71 compat
• CI now checks for formatting

gnuradio-runtime

• dot graphs now contain message edges

gr-uhd

• UHD Filter API

GRC

• block affinity, buffer sizes available as advanced options for blocks
• testing