[ANNOUNCE] libgpiod v1.5

[ANNOUNCE] libgpiod v1.5

[Bartosz Golaszewski]

Hello!

libgpiod v1.5 is now released with just a couple fixes on top of
v1.5-rc1. Final changelog is below.

The sources are available at:

    git://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git

The release tarballs can be downloaded from:

    https://mirrors.edge.kernel.org/pub/software/libs/libgpiod/

I'm also making a bug-fix release for the v1.4.x series because v1.5
will be unavailable in yocto until it integrates linux v5.5.

Best regards,
Bartosz Golaszewski

---

libgpiod v1.5
=============

New features:
- switched to using the GLib testing framework for core library tests and BATS
  (Bash Automated Testing System) for command-line tools
- used Catch2 C++ testing framework to implement a proper test-suite for C++
  bindings while also reusing the API provided by libgpiomockup
- used Python's unittest package to implement a proper test suite for Python
  bindings and reused libgpiockup again
- provided line::update() and Line.update() routines for C++ and Python
  bindings respectively allowing to update the line info from bindings as well
- added support for bias flags which are a new functionality first available in
  linux v5.5; subsequently the library now requires v5.5 kernel headers to
  build; the new flags are supported in the core library, C++ and Python
  bindings as well as the command-line tools
- added support for the new SET_CONFIG ioctl(): this too is a new functionality
  added in linux v5.5; both features have been implemented in the library by
  Kent Gibson
- added routines for reading multiple line events at once to the core library,
  C++ and Python bindings

Improvements:
- constified function arguments where applicable in libgpiomockup
- fixed the name of the test exeucutable displayed at build time
- improved the function pointer casting in Python bindings to avoid warnings
  emitted by GCC8
- switched to using the KERNEL_VERSION() macro in tests instead of handcoded
  version parsing
- improved the setup ordering in tests (setup libgpiomockup before checking
  the kernel version
- add 'extern "c"' to the libgpiomockup header to make it usable from C++
- add chip index validation to libgpiomockup functions
- check if the debugfs directory used by libgpiomockup is writable before
  using it to set the pull of dummy lines
- add several new test cases
- improved Python example programs (made gpiomon's output similar to the
  original tool, make gpioset wait for an ENTER pres by default)
- fixed the major:minor number comparison between the device and sysfs
- deprecated the gpiod_line_needs_update() function and removed the logic
  behind it from the library
- shrank the Python bindings a bit by directly returning the value from
  PyErr_SetFromErrno()
- dropped noexcept from methods which can throw in C++ bindings
- switched to initializing the bitset with integers instead of strings in C++
  bindings
- allowed gpiod_line_set_value_bulk() to accept null pointers
- when building Python bindings: check for the existence of python-config
- improved the readability of help text messages for command-line tools
- reworked the .gitignore file: added libtool scripts generated during
  cross-compilation and split the main .gitignore into several fine-grained
  files
- fixed several misspellings
- other minor tweaks and improvements

Bug fixes:
- fixed memory leaks in libgpiomockup
- fixed memory leaks in the testing framework
- fixed a segfault in error path in tests
- make gpioinfo show lines claimed by the kernel as used even if they have no
  named consumer
- fixed the test cases validating the '--active-low' switch in gpiomon and
  the GPIOHANDLE_REQUEST_ACTIVE_LOW flag in the core library after a fix
  for incorrect behavior was merged in linux v5.2.7
- stopped failing at init-time of libgpiomockup if gpio-mockup is already
  loaded
- added a missing throw keyword in error path in C++ bindings
- fixed a segfault in Python bindings when calling Line.request() without
  the consumer argument