[swift-dev] Build failing on CMakeTestCCompiler.cmake

[Frederick Kellison-Linn]

Yeah that seems wrong to me as well. Do you know how I can change the linker that clang invokes?

Freddy

> On Dec 8, 2016, at 5:16 PM, William Dillon <william at housedillon.com> wrote:
> 
> The Apple folks might know better and correct me, but I’m pretty certain you don’t want to be using any toolchains in /opt/local.  It all needs to be from the Xcode.app.
> 
> - Will
> 
> On December 8, 2016 at 2:14:42 PM, Frederick Kellison-Linn via swift-dev (swift-dev at swift.org <mailto:swift-dev at swift.org>) wrote:
> 
>> The output of those commands follows:
>> 
>> $ xcode-select -p
>> /Applications/Xcode.app/Contents/Developer
>> 
>> $ xcodebuild -version
>> Xcode 8.1
>> Build version 8B62
>> 
>> Both look fine to me.
>> 
>> It appears that clang is invoking /opt/local/bin/ld, and running /opt/local/bin/ld -v gives:
>> 
>> @(#)PROGRAM:ld  PROJECT:ld64-264.3.102
>> configured to support archs: i386 x86_64 x86_64h armv6 armv7 armv7s armv7m armv7k arm64 (tvOS)
>> LTO support using: LLVM version 3.8.1
>> 
>> What is wrong with the config here?
>> 
>> Freddy
>>  
>>> On Dec 8, 2016, at 4:28 PM, William Dillon <william at housedillon.com <mailto:william at housedillon.com>> wrote:
>>> 
>>> I think Greg is right.  I’ve seen this before, and the way I fixed it was by fixing the Xcode configuration, specifically relating to the command-line tools.
>>> 
>>> - Will
>>> 
>>> On December 8, 2016 at 1:24:59 PM, Greg Parker via swift-dev (swift-dev at swift.org <mailto:swift-dev at swift.org>) wrote:
>>> 
>>>> 
>>>>> On Dec 8, 2016, at 7:28 AM, Frederick Kellison-Linn via swift-dev <swift-dev at swift.org <mailto:swift-dev at 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     gparker at apple.com <mailto:gparker at apple.com>     Runtime Wrangler
>>>> 
>>>> 
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