According to the yajl API documentation, #include lines should have
the "yajl/" path prefix, but the actual pkg-config file contains:
includedir=${dollar}{prefix}/include/yajl
.. which already contains this directory name, and thus the "yajl/"
prefix cannot work. Unfortunately, the yajl project hasn't been
maintained for nearly 10 years, and there's little chance this bug
will ever be fixed.
Since we switched from autotools to Meson in commit
94592c1406, we don't need to include
`config.h` early to properly enable large file support. Meson passes
the required macros on the compiler command line instead of defining
them in `config.h`.
This means we can include `config.h` at any time, whenever we want to
check its macros, and there are no ordering constraints.
So long, autotools! This is my last MPD related project to migrate
away from it. It has its strengths, but also very obvious weaknesses
and weirdnesses. Today, many of its quirks are not needed anymore,
and are cumbersome and slow. Now welcome our new Meson overlords!
