I've run into a few limitations in find_dependency. I'm not sure if
these are by design or could be fixed, so this is really a request for
further explanation or design rationale.
The first issue is this:
if (NOT ${dep}_FOUND)
This seems to be making the assumption that the found variable matches
the dependency name, but the case used varies between modules and the
name is case sensitive, from my reading of cmake-language. Is this
correct? Even if so, should this optimisation be put here rather than
in find_package itself? If case sensitivity/naming is an issue, could
the _FOUND variable be passed in as an argument, leaving the existing
behaviour as the default if unspecified?
The reason for stripping EXACT isn't clear. If my package has a strict
requirement on another package, whether the caller has an exact
requirement for the version of my package has no bearing on the
requirements I have for my dependencies as far as I understand. What's
the reason for the existing behaviour?
Support for find_package arguments is limited to the dependency name and
optionally the version. I can understand why REQUIRED and related
arguments are omitted--that is why find_dependency exists--but I'd quite
like to be able to specify COMPONENTS where needed e.g. with FindBoost,
and this is not currently possible.
I was wondering if we could perhaps make find_dependency handle and pass
through /all/ find_package arguments, minus REQUIRED/QUIET, so that
find_dependency can expose the additional functionality offered by
find_package. Some may not be useful, in which case they could be
omitted, but some like COMPONENTS may be required for the find_package
call to be useful.
Regards,
Roger
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