8ea45e626e build: use macOS 14 SDK (Xcode 15.0) (fanquake)
51c97ffb69 build: patch boost process for macOS 14 SDK (fanquake)
423949a13b depends: add -platform_version to macOS build flags (fanquake)
Pull request description:
This fixes: https://github.com/bitcoin/bitcoin/pull/28349#issuecomment-1748515277 (cross-compiling with C++20 for macOS). See https://developer.apple.com/xcode/cpp/#c++20 for C++20 support in Apples libc++, some features landed with Xcode 14.3, although many more landed with Xcode 15.0.
ACKs for top commit:
hebasto:
ACK 8ea45e626e.
TheCharlatan:
ACK 8ea45e626e
Tree-SHA512: 274ce2c9b9f8e4d755c07b8d0d4897a7f92708ac64e6afb7a3f75bdb485e863fc7f40badf3a88b129ce36f6cca72f768dc2ed7fba2bdf0bb6da2bf0c8fedee10