[swift-users] Unable to build swift master branch

[Michael Gottesman]

> On Mar 30, 2017, at 4:22 PM, Michael Gottesman via swift-users <swift-users at swift.org> wrote:
> 
>> 
>> On Mar 30, 2017, at 12:31 PM, Mohit Athwani via swift-users <swift-users at swift.org <mailto: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.
> 
> Specifically:
> 
> URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04/2413/consoleFull <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.

Let me elaborate, when I say misconfigured, I mean you are missing a dependency.

> 
> 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
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> 
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