Edit: It seems like upgrading CMake to the latest stable version seems to have fixed the problem.
I am not sure if I am the only one, but there's seems to be an issue when building swift (fresh checkout). I am using Xcode 11.3.1 and macOS Catalina 10.15.3.
There seems to be a few errors actually when building with
build-script -x -r --skip-build-benchmarks (tried
--reconfigure too but they make no difference):
-- Detecting CXX compile features - done -- CMake (/usr/local/Cellar/cmake/3.12.4/bin/cmake) Version: 3.12.4 xcodebuild: error: invalid option '--version'
Call Stack (most recent call first): cmake/modules/SwiftSharedCMakeConfig.cmake:102 (include) cmake/modules/SwiftSharedCMakeConfig.cmake:207 (swift_common_standalone_build_config_llvm) CMakeLists.txt:467 (swift_common_standalone_build_config)
CMake Error at cmake/modules/AddSwift.cmake:1394 (target_link_options): Unknown CMake command "target_link_options". Call Stack (most recent call first): cmake/modules/AddSwift.cmake:2182 (_add_swift_library_single) stdlib/toolchain/Compatibility50/CMakeLists.txt:3 (add_swift_target_library)
Did something change recently? Ninja has a similar issue (related to CMake) so it doesn't seem to be related to Xcode.