Release 3.9.4.0

[3.9.4.0] - 2021-10-25

This is an API compatible update to GNU Radio 3.9. Code written for 3.9.X versions should compile and link without modification. The ABI is not guaranteed to be compatible, so a rebuild of OOT modules may be necessary.

Changes

Regressions Fixes

• Remove #include <filesystem> (C++17 feature) from one file
• Restore pyqwidget() in gr-qtgui

GRC

• GRC now runs on Fedora 35 … Gtk initialization checks were too strict
• Add keyboard shortcuts for zoom
• Account for scale factor when computing drawing area size
• Use font size from config for block comments
• Change type aliasing to allow interleaved short/byte to be connected to vectors of short/byte. Stricter type checking was added previously and caused some blocks to be unconnectable when using these types.
• Required params no longer default to 0 when left empty. This caused hard-to-find errors. Older flowgraphs that have empty required fields will need to be fixed.
• Tooltips fixed for categories and modules

gr-runtime

• PMT uses the VOLK allocator for vectors
• get_tags_in_window() Python wrapper calls the correct function
• Add --pybind option to gnuradio-config-info to get PyBind11 version

gr-blocks

• Add example for XMLRPC
• Add a unit test for Message Strobe
• Fix C++ support for Unpacked to Packed

gr-channels

• RNG seeds are initialized correctly

gr-digital

• Fix yml file for Header/Payload Demux

gr-network

• Suppress warning in tuntap

gr-qtgui

• Remove unusable int type in Number Sink yml
• Use no_quotes() function in several yml files

modtool

• Hashes can be fixed using modtool using --update-hash-only
• Use tempfile() instead of /tmp in bindtool and modtool
• Use static_cast instead of reinterpret_cast in templates
• Correct broken Python general block template

Build system

• Better check for Boost version
• Determine the Python prefix more reliably
• Use GR-specified compiler standard (C++14) in gr-soapy, instead of the SoapySDR standard (C++11)
• GrPython.cmake is compatible with older cmake

Documentation

• Man pages are in-tree
• Repair many examples, especially in gr-digital
• Allow UTF-8 in pydoc templates

CI

• Execute make install during test
• Add Ubuntu 18.04 test target