[swift-corelibs-dev] [swift-users] Unable to build swift master branch

Michael Gottesman mgottesman at apple.com
Thu Mar 30 18:22:42 CDT 2017

> On Mar 30, 2017, at 12:31 PM, Mohit Athwani via swift-users <swift-users at swift.org> wrote:
> I'm trying to get back to work starting from scratch on Swift Foundation on my Ubuntu 16.04 LTS system.
> I cloned the main swift repo and all of it's dependencies via ssh
> ./swift/utils/update-checkout --clone-with-ssh
> and after running (taken from instructions from the Foundation site):
> swift/utils/build-script --xctest --foundation -t
> I get the following error:
> + make build-tests
> /bin/bash ../libtool  --tag=CC   --mode=link /home/mohit/Documents/swift-source/build/Ninja-DebugAssert/llvm-linux-x86_64/bin/clang -Wall -Wno-deprecated-declarations  -fblocks -I/home/mohit/Documents/swift-source/swift-corelibs-libdispatch/src/BlocksRuntime -isystem /usr/include/bsd -DLIBBSD_OVERLAY   -g -O0 -rpath /home/mohit/Documents/swift-source/build/Ninja-DebugAssert/swift-linux-x86_64/lib/swift/linux/x86_64  -o dispatch_apply dispatch_apply.o libbsdtests.la <http://libbsdtests.la/> ../src/libdispatch.la <http://libdispatch.la/>  -lbsd -L/home/mohit/Documents/swift-source/build/Ninja-DebugAssert/swift-linux-x86_64/lib/swift/linux/x86_64 -lswiftCore -lswiftSwiftOnoneSupport -lpthread 
> libtool: link: /home/mohit/Documents/swift-source/build/Ninja-DebugAssert/llvm-linux-x86_64/bin/clang -Wall -Wno-deprecated-declarations -fblocks -I/home/mohit/Documents/swift-source/swift-corelibs-libdispatch/src/BlocksRuntime -isystem /usr/include/bsd -DLIBBSD_OVERLAY -g -O0 -o .libs/dispatch_apply dispatch_apply.o  ./.libs/libbsdtests.a ../src/.libs/libdispatch.so -lbsd -L/home/mohit/Documents/swift-source/build/Ninja-DebugAssert/swift-linux-x86_64/lib/swift/linux/x86_64 -lswiftCore -lswiftSwiftOnoneSupport -lpthread -Wl,-rpath -Wl,//usr/lib/swift/linux -Wl,-rpath -Wl,/home/mohit/Documents/swift-source/build/Ninja-DebugAssert/swift-linux-x86_64/lib/swift/linux/x86_64
> /home/mohit/Documents/swift-source/build/Ninja-DebugAssert/swift-linux-x86_64/lib/swift/linux/x86_64/libswiftCore.so: undefined reference to `objc_release'
> clang-4.0: error: linker command failed with exit code 1 (use -v to see invocation)
> Makefile:1123: recipe for target 'dispatch_apply' failed
> make: *** [dispatch_apply] Error 1
> swift/utils/build-script: fatal error: command terminated with a non-zero exit status 2, aborting
> Looks like there is some undefined reference for objc_release in libswiftCore.
> From the looks of the message it looks like swift was actually built but it's just that test cases weren't built. On this hunch, I went into my swift-corelibs-foundation folder and tried to execute:
> ninja
> Which tells me:
> ninja: error: loading 'build.ninja': No such file or directory

swift-corelibs-foundation does not use ninja. I would use the build-script line from the bots. That way you know you are doing the right thing.


URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04/2413/consoleFull

Preset: buildbot_incremental_linux

If that does not work on your system, then something is misconfigured.

Also I wouldn't use --clone-with-ssh it is unnecessary.

> Given my lack of experience here, I'm not quite sure how to go about resolving these issues.
> Could somebody help me out here please.
> Thanks,
> Mohit
> _______________________________________________
> swift-users mailing list
> swift-users at swift.org
> https://lists.swift.org/mailman/listinfo/swift-users

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