Summary:
The purpose of this patch is to make identifying missing dependencies clearer to the user.
`find_package` will report if a package is not found, that output, combined with the exiting
status message, is clearer than not having the additional verbosity.
If the SWIG dependency is required {LLDB_ENABLE_PYTHON, LLDB_ENABLE_LUA}
and SWIG is not available, fail the configuration step. Terminate the
configure early rather than later with a clear error message.
We could possibly modify:
`llvm-project/lldb/cmake/modules/FindPythonInterpAndLibs.cmake`
However, the patch here seems clear in my opinion.
Reviewers: aadsm, hhb, JDevlieghere
Reviewed By: JDevlieghere
Subscribers: labath, jrm, mgorny, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D74917
Just like Python, Lua should only be auto-enabled if SWIG is found as
well. This moves the logic of finding SWIG and Lua as a whole into a new
CMake package.
Jonas Devlieghere