So I got a successful build, and your suspicion was right. I deleted a very old /usr/local/bin/cmake and linked /usr/local/bin/cmake to /Applications/CMake.app/Contents/bin/cmake.
Now when I `where cmake`, every possible candidate is 3.6. I deleted everything (including my github fork), and started with fresh cloning: git clone https://github.com/apple/swift.git utils/update-checkout --clone utils/update-checkout --branch master utils/build-script -R And now I can build https://github.com/erica/swift/tree/unfold : https://twitter.com/ericasadun/status/756570453485817856/photo/1 Thank you all for pointing me in the right direction. -- E > On Jul 21, 2016, at 11:53 PM, Erica Sadun via swift-dev <swift-dev@swift.org> > wrote: > > 3.6.0 > > -- E > >> On Jul 21, 2016, at 9:37 AM, Arnold Schwaighofer <aschwaigho...@apple.com> >> wrote: >> >> Somewhat wild guess. What is the version of your cmake install? >> >> I think we started requiring some 3ish version recently. >> >> Maybe you need a newer version … >> >>> On Jul 20, 2016, at 2:07 PM, Erica Sadun via swift-dev >>> <swift-dev@swift.org> wrote: >>> >>> I started with an absolutely clean re-clone, used bash (normally I use >>> tcsh), made sure >>> to do `export PATH=/Applications/CMake.app/Contents/bin:$PATH`, >>> >>> CMake Error at cmake/modules/SwiftSharedCMakeConfig.cmake:155 >>> (find_package): >>> Could not find a package configuration file provided by "Clang" with any of >>> the following names: >>> >>> ClangConfig.cmake >>> clang-config.cmake >>> >>> Add the installation prefix of "Clang" to CMAKE_PREFIX_PATH or set >>> "Clang_DIR" to a directory containing one of the above files. If "Clang" >>> provides a separate development package or SDK, be sure it has been >>> installed. >>> Call Stack (most recent call first): >>> cmake/modules/SwiftSharedCMakeConfig.cmake:212 >>> (swift_common_standalone_build_config_clang) >>> CMakeLists.txt:398 (swift_common_standalone_build_config) >>> >>> >>> -- Configuring incomplete, errors occurred! >>> >>> I'm flummoxed. Anyone able to give me some pointers to get past this? >>> >>> Thanks in advance, -- E >>> >>> _______________________________________________ >>> swift-dev mailing list >>> swift-dev@swift.org >>> https://lists.swift.org/mailman/listinfo/swift-dev >> > > _______________________________________________ > swift-dev mailing list > swift-dev@swift.org > https://lists.swift.org/mailman/listinfo/swift-dev
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