Try to make so cargo ctest does not force the rebuild of all the dependencies

[lu-zero]

Ideally it should use a different target dir.

[kanru]

Do you have some idea as why it rebuilds? It looks like ctest would first invoke cbuild, then a normal cargo test with the additional cflags. Presumably the second build used a different profile or flag?

I tried to run cargo cbuild then cargo test but it doesn't always rebuild. So what's triggering the rebuild?

[lu-zero]

It needs a bit more of investigation I assumed it always trigger a rebuild as it is now.