Building many identical targets in subdirectories

[egor-tensin]

Hi, I have the following use-case and I'm not sure how to adapt Meson to it: a project with a number of tests (let's say, 50), each of which resides in its own directory (under tests/unit/, so tests/unit/test1, tests/unit/test2, ..., tests/unit/test50). Each test needs to build a bunch of custom_targets based on its sources, but the build procedure is almost identical between all of them. I would like to

1. avoid boilerplate repetition in each of the tests/unit/testN directories,
2. have the custom_targets' outputs be built in their our corresponding directories.

Is that possible? What I've done so far is a tests/unit/meson.build file, which defines all the custom_targets in a foreach loop. However, this leads to all the custom_target outputs to be placed in tests/unit/ (in the build directory), which makes everything really disorganized. Could you please help me find a solution for this?