> On Dec 8, 2016, at 7:28 AM, Frederick Kellison-Linn via swift-dev > <swift-dev@swift.org> wrote: > > Hello, > > I have been attempting to build Swift, but have been running into issues near > the end of the build. Specifically, CMake fails on the step [2112/2254] > Performing configure step for 'compiler-rt’, since the compiled clang fails > to build a simple C program. The specific issue appears to be at the lines: > > ld: unexpected token: !tapi-tbd-v2 file > > '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib/libSystem.tbd' > for architecture x86_64 > > My system settings are as follows: > > MacBook Pro (Retina, Mid 2012) > macOS Sierra Version 10.12.2 Beta (16C48b) > Xcode Version 8.1 (8B62) > |----clang/clang++: Apple LLVM version 8.0.0 (clang-800.0.42.1) > > > /Users/freddy/Development/swift/swift-source/build/Ninja-RelWithDebInfoAssert/llvm-macosx-x86_64/./bin/clang > -isysroot > > /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk > -Wl,-search_paths_first -Wl,-headerpad_max_install_names > CMakeFiles/cmTC_b980a.dir/testCCompiler.c.o -o cmTC_b980a && : > > ld: unexpected token: !tapi-tbd-v2 file > > '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib/libSystem.tbd' > for architecture x86_64
That error sounds like the build is trying to use an old linker that does not understand the format of the current SDK's files. Xcode 8.1 (8B62) should be fine. If the problem is an old linker then it is most likely coming from some other install of Xcode on your machine. What is the output of `xcode-select -p` and `xcodebuild -version`? If those are pointing at some other install of Xcode then you can use `xcode-select -s` to tell the command-line tools which copy of Xcode to use. You can also re-run the failing clang command by hand and add -### to its arguments. clang will then print the full path to the linker it is running. -- Greg Parker gpar...@apple.com Runtime Wrangler
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