tree 00d7508c95d35d3acfeef79c195b2f56af54fdf3
parent 7f516a02b02d44e799a29e2d2d8f579dce31fb1f
author Andrew Jeffery <andrew@codeconstruct.com.au> 1719483758 +0930
committer Andrew Jeffery <andrew@codeconstruct.com.au> 1719488350 +0930

subprojects: Add valijson wrap

Addresses the following meson warning:

```
Has header "valijson/validator.hpp" : NO
Cloning into 'valijson'...
remote: Enumerating objects: 4827, done.
remote: Counting objects: 100% (1766/1766), done.
remote: Compressing objects: 100% (893/893), done.
remote: Total 4827 (delta 875), reused 1685 (delta 832), pack-reused 3061
Receiving objects: 100% (4827/4827), 4.80 MiB | 3.60 MiB/s, done.
Resolving deltas: 100% (2637/2637), done.
HEAD is now at 9183462118f5 Fix return type on getMinLength
Subproject exists but has no meson.build file.
Subproject  valijson is buildable: NO (disabling)
meson.build:87: WARNING: include_directories sandbox violation!
The project is trying to access the directory 'subprojects/valijson/include' which belongs to a different
subproject. This is a problem as it hardcodes the relative paths of these two projects.
This makes it impossible to compile the project in any other directory layout and also
prevents the subproject from changing its own directory layout.

Instead of poking directly at the internals the subproject should be executed and
it should set a variable that the caller can then use. Something like:

some_dep = declare_dependency(include_directories: include_directories('include'))

[provide]
some = some_dep

some_dep = dependency('some')
executable(..., dependencies: [some_dep])

This warning will become a hard error in a future Meson release.
```

Change-Id: I26b4ced45285943b6cae1c1feeace2f853931b0d
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>