The MINGW32 build has been failing for a while because the MSYS2
repository has dropped MINGW32 versions of various packages in commit
6866be94df
I suppose nobody really uses 32 bit anymore. I'd like to have a 32
bit test of MPD, just to verify code correctness, but on the other
hand, I don't like solving problems like this MSYS2 packaging problem.
There were a few macOS related bug reports on the bug tracker which
have been open for years without a volunteer caring for them. The
GitHub actions build has also been broken for a long time due to bugs
in the ancient LLVM toolchain shipped with macOS, making macOS an
unsuitable non-Linux target for testing MPD's portability.
All of this makes macOS support an annoying liability for me. To
avoid more frustration, I'm hereby dropping macOS support completely
from MPD. Maybe this causes enough pain for a new maintainer to
spawn, but maybe nobody cares, so... let's see.
The Brew package of yajl is broken, it fails to build:
In file included from ../src/lib/yajl/Handle.cxx:4:
In file included from ../src/lib/yajl/Handle.hxx:6:
/opt/homebrew/Cellar/yajl/2.1.0/include/yajl/yajl_parse.h:22:10: fatal error: 'yajl/yajl_common.h' file not found
#include <yajl/yajl_common.h>
^~~~~~~~~~~~~~~~~~~~
1 error generated.
Therefore, MPD cannot support building with yajl on macOS.
Boost makes building a piece of software much more difficult than
necessary. It's a huge library, and just uncompressing it takes a
considerable amount of time. MPD only used a tiny fraction of it, yet
its header bloat made the MPD build very slow. Locating Boost was
difficult due to its arcane build system and its resistance to use
pkg-config; it's always a special case. MPD could never use features
of newer Boost versions because Linux distributions always shipped old
Boost versions. Boost made everything complicated and slow.
So, finally, after getting rid of GLib (commit ccdb94b06c), switching
to C++ and using Boost (commit 0801b3f495), we've finally get rid of
it 8 years later.
Unfortunately, I had to reimplement parts of it along the way
(e.g. IntrusiveList). Kind of NIH, but on the other hand, compiling
MPD has become much easier for users.
According to https://github.com/actions/virtual-environments
"ubuntu-latest" maps to "ubuntu-20.04", even though "ubuntu-22.04" is
also available. Since our job description is very specific to
"ubuntu-20.04", let's select this explicitly.
Max Kellermann