76f52e3da3 build: Fix Qt processing of configure script for depends with DEBUG=1 (Hennadii Stepanov)
Pull request description:
This PR:
- makes the `configure` script correctly pickup Qt if depends is built with `DEBUG=1`:
- for Windows -- fix #19266
- for macOS -- fix #16391
- is an alternative to #18117 (without downsides)
ACKs for top commit:
fanquake:
ACK 76f52e3da3. Tested native darwin, and darwin/win cross compile with `DEBUG=1`.
Tree-SHA512: 8fde99302b4b06faf109315bddba9e3063b156c50f8f9863c2bd51718538c719429a63fdced071730c18022f2e559d3b25c1dcec3efa81fe79f657253680956a