Where is concurrency lib?

[johnburkey]

Where is _concurrency lib :-)

See discussion section!

Happy Holidays!

[vgorloff]

I wasn't used "new concurrency" on Android yet. For example, in this project - https://github.com/vgorloff/swift-everywhere-samples. I conducted few examples on macOS 12 / Xcode 13.1, but not yet used "new concurrency" in production or commercial apps.

Will try to use few "new concurrency" examples on Android.

[johnburkey]

Thanks!

Happy Holidays !

On Dec 29, 2021, at 10:02 AM, Vlad Gorlov @.***> wrote:

I wasn't used "new concurrency" on Android yet. For example, in this project - https://github.com/vgorloff/swift-everywhere-samples https://github.com/vgorloff/swift-everywhere-samples. I conducted few examples on macOS 12 / Xcode 13.1, but not yet used "new concurrency" in production or commercial apps.

Will try to use few "new concurrency" examples on Android.

— Reply to this email directly, view it on GitHub https://github.com/vgorloff/swift-everywhere-toolchain/issues/138#issuecomment-1002664585, or unsubscribe https://github.com/notifications/unsubscribe-auth/AC5F3PMCVFAWMUERQZ2XWOTUTMWK5ANCNFSM5K57HZOQ. You are receiving this because you authored the thread.

[johnburkey]

Oh, and we use the new concurrency on iOS/macOS/Linux and its good now for normal operations.

On Dec 29, 2021, at 1:15 PM, John Burkey @.***> wrote:

Thanks!

Happy Holidays !

On Dec 29, 2021, at 10:02 AM, Vlad Gorlov @.*** @.***>> wrote:

I wasn't used "new concurrency" on Android yet. For example, in this project - https://github.com/vgorloff/swift-everywhere-samples https://github.com/vgorloff/swift-everywhere-samples. I conducted few examples on macOS 12 / Xcode 13.1, but not yet used "new concurrency" in production or commercial apps.

Will try to use few "new concurrency" examples on Android.

— Reply to this email directly, view it on GitHub https://github.com/vgorloff/swift-everywhere-toolchain/issues/138#issuecomment-1002664585, or unsubscribe https://github.com/notifications/unsubscribe-auth/AC5F3PMCVFAWMUERQZ2XWOTUTMWK5ANCNFSM5K57HZOQ. You are receiving this because you authored the thread.

[vgorloff]

Building Concurrency example (https://github.com/vgorloff/swift-everywhere-toolchain/commit/645e75d91bcb423a6b349678820bf3cf756a6ebb) gives me the following error:

{0}vova@MacBook-Pro:sample-package$ swift-build-arm-linux-androideabi
<unknown>:0: warning: unable to perform implicit import of "_Concurrency" module: no such module found
<unknown>:0: warning: unable to perform implicit import of "_Concurrency" module: no such module found
<unknown>:0: warning: unable to perform implicit import of "_Concurrency" module: no such module found
/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/Tests/sample-package/Sources/SAConcurrency/SAConcurrencyMain.swift:18:7: error: cannot find 'Task' in scope
      Task {
      ^~~~

Seems the Concurrencyfeature wasn't build when building Android toolchain.

[vgorloff]

The Concurrency feature wasn't enabled during build.

# File CMakeCache.txt
//Enable build of the Swift concurrency module
SWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY:BOOL=OFF

[vgorloff]

There is a chicken-egg problem "dispatch needs stdlib" and, at the same time, "stdlib needs dispatch".

# File: stdlib/public/Concurrency/CMakeLists.txt

if(SWIFT_CONCURRENCY_USES_DISPATCH)
  if(NOT CMAKE_SYSTEM_NAME STREQUAL Darwin)
    include_directories(AFTER
                          ${SWIFT_PATH_TO_LIBDISPATCH_SOURCE})

    # FIXME: we can't rely on libdispatch having been built for the
    # target at this point in the process.  Currently, we're relying
    # on soft-linking.
    list(APPEND swift_concurrency_link_libraries
      dispatch)
  endif()
endif()

[vgorloff]

To build Concurrency feature the Dispatch subproject needs to be build during stdlib build. It is configured via cmake/modules/Libdispatch.cmake.

[vgorloff]

Dispatch subproject fails to build due compiler flag -Werror :)

[johnburkey]

:-)

Sent from my iPhone

On Jan 1, 2022, at 8:40 AM, Vlad Gorlov @.***> wrote:

 Dispatch subproject fails to build due compiler flag -Werror :)

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.

[johnburkey]

does it build?

[vgorloff]

I will try to figure out in coming days how to pass arguments to external project (dispatch in our case). After quick search I didn't managed to find "who" is passing that -Werror flag. Maybe it is a CMake default.

[johnburkey]

Maybe ping compnerd on slack channel for swift on android ? He’s awesome and very aquatinted with stuff like this as he’s the windows build champ on top of all of his other magic.

On Jan 5, 2022, at 2:50 AM, Vlad Gorlov @.***> wrote:

 I will try to figure out in coming days how to pass arguments to external project (dispatch in our case). After quick search I didn't managed to find "who" is passing that -Werror flag. Maybe it is a CMake default.

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.

[johnburkey]

https://join.slack.com/t/swift-android/shared_invite/zt-11grcjtps-UHeM3etApuYdayxAKv436A

[johnburkey]

Sounds like they want to do a strategy discussion with you too - Nice folks .

[vgorloff]

Building of "libdispatch" is not a problem. There is already builder for it (https://github.com/vgorloff/swift-everywhere-toolchain/blob/master/lib/Builders/DispatchBuilder.js). Issue that CMake is a functional-programming thing which consumes time to figure out needed options to pass :)

[johnburkey]

Compnerd knows the swift builds super well just thinking he could save you time ;-)

On Jan 5, 2022, at 4:14 PM, Vlad Gorlov @.***> wrote:

 Building of "libdispatch" is not a problem. There is already builder for it (https://github.com/vgorloff/swift-everywhere-toolchain/blob/master/lib/Builders/DispatchBuilder.js). Issue that CMake is a functional-programming thing which consumes time to figure out needed options to pass :)

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.

[vgorloff]

Seems "libDispatch" itself defined compiler flags here: https://github.com/apple/swift-corelibs-libdispatch/blob/swift-5.5.2-RELEASE/cmake/modules/DispatchCompilerWarnings.cmake

Strange why I don't have this issue when building libdispatch standalone. Maybe because i am passing C/CXX flags explicitly.

[vgorloff]

The issue with -Werror is fixed by adding code below:

    if(CMAKE_HOST_SYSTEM_NAME STREQUAL Darwin)
      add_compile_options($<$<OR:$<COMPILE_LANGUAGE:C>,$<COMPILE_LANGUAGE:CXX>>:-Wno-unused-command-line-argument>)
    endif()

The next error seems due minSDKVersion 21 (https://stackoverflow.com/a/53217341/1418981):

/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Sources/swift-corelibs-libdispatch/src/event/event_epoll.c:460:33: error: use of undeclared identifier 'EPOLL_CLOEXEC'
        _dispatch_epfd = epoll_create1(EPOLL_CLOEXEC);
                                       ^
1 error generated.

Cmake uses SDK 16 by default:

-- ANDROID_PLATFORM not set. Defaulting to minimum supported version
16.

[vgorloff]

Passing -DANDROID_PLATFORM=${ANDROID_PLATFORM} in cmake/modules/Libdispatch.cmake helped to build libswift_Concurrency.so for armv7.

Next error when building for aarch64:

-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang
-- Check for working C compiler: /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang - broken
CMake Error at /usr/local/Cellar/cmake/3.22.0/share/cmake/Modules/CMakeTestCCompiler.cmake:69 (message):
  The C compiler

    "/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang"

  is not able to compile a simple test program.

Configure is not finished successfully :0

[vgorloff]

When I am building libdispatch as standalone, the CMAKE_C_FLAGS defined as empty string. When building libdispatch via stdlib, then CMAKE_C_FLAGS defined as CMAKE_C_FLAGS:STRING=-g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -L/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wmissing-field-initializers -Wno-comment -fdiagnostics-color

Thus the following configure error seems due unneeded flag -L/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21

-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang
-- Check for working C compiler: /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang - broken
CMake Error at /usr/local/Cellar/cmake/3.22.0/share/cmake/Modules/CMakeTestCCompiler.cmake:69 (message):
  The C compiler

    "/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/libdispatch-android-aarch64-prefix/src/libdispatch-android-aarch64-build/CMakeFiles/CMakeTmp

    Run Build Command(s):/usr/local/bin/ninja cmTC_06ead && [1/2] Building C object CMakeFiles/cmTC_06ead.dir/testCCompiler.c.o
    clang: warning: argument unused during compilation: '-L/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21' [-Wunused-command-line-argument]
    [2/2] Linking C executable cmTC_06ead
    FAILED: cmTC_06ead
    : && /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang --target=armv7-none-linux-androideabi21 --gcc-toolchain=/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64 --sysroot=/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security  -L`/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21` -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wmissing-field-initializers -Wno-comment -fdiagnostics-color -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id -Wl,--fatal-warnings -Wl,--exclude-libs,libunwind.a -Wl,--no-undefined -Qunused-arguments -Wl,--gc-sections CMakeFiles/cmTC_06ead.dir/testCCompiler.c.o -o cmTC_06ead  -latomic -lm && :
    /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: warning: skipping incompatible /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21/libm.so while searching for m
    /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: warning: skipping incompatible /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21/libdl.so while searching for dl
    /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: warning: skipping incompatible /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21/libdl.so while searching for dl
    /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: warning: skipping incompatible /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21/libc.so while searching for c
    /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: warning: skipping incompatible /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21/libdl.so while searching for dl
    /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: warning: skipping incompatible /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21/libdl.so while searching for dl
    /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.9.x/../../../../arm-linux-androideabi/bin/ld: error: treating warnings as errors

[vgorloff]

When building stdlib, I am passing manually the C flag -L/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21. And then Cmake picks it and passes to the libdispatch subproject. Maybe I just need not to pass it.

[vgorloff]

Next error:

FAILED: lib/swift/android/aarch64/libswift_Concurrency.so
: && /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang --target=aarch64-none-linux-android21 --gcc-toolchain=/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64 --sysroot=/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot -fPIC -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security  -L/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/21 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wmissing-field-initializers -Wno-comment -fdiagnostics-color -O2  -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id -Wl,--fatal-warnings -Wl,--no-undefined -Qunused-arguments     -shared -Wl,-soname,libswift_Concurrency.so -target aarch64-unknown-linux-android21 --sysroot=/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot -B /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/aarch64-linux-android/bin -lm -fuse-ld=gold -shared  -o lib/swift/android/aarch64/libswift_Concurrency.so stdlib/public/Concurrency/ANDROID/aarch64/_Concurrency.o lib/swift/android/aarch64/swiftrt.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/__/CompatibilityOverride/CompatibilityOverride.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/Actor.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/AsyncLet.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/Error.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/LinkCompatibilityShims.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/Task.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/TaskAlloc.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/TaskStatus.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/TaskGroup.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/TaskLocal.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/ThreadSanitizer.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/Mutex.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/AsyncStream.cpp.o stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/linker-support/magic-symbols-for-install-name.c.o -L/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-host/llvm-project/./lib   -L/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/./lib/swift/android/aarch64   -L/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-host/swift/bin/../lib/swift/android/aarch64   -L/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-host/swift/bin/../lib/swift/android   -L/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/swift   -L/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/../lib/gcc/aarch64-linux-android/4.9.x   -L/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Install/darwin-aarch64/icu/lib   -L/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/libdispatch-android-aarch64-prefix/lib -ldispatch  -ldl  -llog  /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/libc++abi.a  /Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/lib/aarch64-linux-android/libc++_shared.so  /Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Install/darwin-aarch64/icu/lib/libicui18nswift.so  /Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Install/darwin-aarch64/icu/lib/libicuucswift.so  lib/swift/android/aarch64/libswiftGlibc.so  lib/swift/android/aarch64/libswiftCore.so  -latomic -lm && :
/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/aarch64-linux-android/bin/ld.gold: warning: skipping incompatible /Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/./lib/swift/android/aarch64/libdispatch.so while searching for dispatch
/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/aarch64-linux-android/bin/ld.gold: warning: skipping incompatible /Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/libdispatch-android-aarch64-prefix/lib/libdispatch.so while searching for dispatch
/Volumes/Shared/Data/Android/sdk/ndk/21.4.7075529/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/aarch64-linux-android/bin/ld.gold: error: cannot find -ldispatch
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalImpl(swift::Job*): error: undefined reference to '_dispatch_queue_attr_concurrent'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalImpl(swift::Job*): error: undefined reference to '_dispatch_queue_attr_concurrent'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalImpl(swift::Job*): error: undefined reference to 'dispatch_queue_attr_make_with_qos_class'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalImpl(swift::Job*): error: undefined reference to 'dispatch_queue_create'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalImpl(swift::Job*): error: undefined reference to 'dispatch_queue_set_width'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalImpl(swift::Job*): error: undefined reference to 'dispatch_release'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to 'dispatch_time'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to 'dispatch_after_f'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to '_dispatch_queue_attr_concurrent'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to '_dispatch_queue_attr_concurrent'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to 'dispatch_queue_attr_make_with_qos_class'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to 'dispatch_queue_create'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to 'dispatch_queue_set_width'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueGlobalWithDelayImpl(unsigned long long, swift::Job*): error: undefined reference to 'dispatch_release'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueMainExecutor: error: undefined reference to '_dispatch_main_q'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueMainExecutor: error: undefined reference to '_dispatch_main_q'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueMainExecutorImpl(swift::Job*): error: undefined reference to '_dispatch_main_q'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function swift_task_enqueueMainExecutorImpl(swift::Job*): error: undefined reference to '_dispatch_main_q'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/GlobalExecutor.cpp.o:GlobalExecutor.cpp:function dispatchEnqueueDispatchAsync(dispatch_queue_s*, void*, unsigned int): error: undefined reference to 'dispatch_async_f'
stdlib/public/Concurrency/CMakeFiles/swift_Concurrency-android-aarch64.dir/Task.cpp.o:Task.cpp:function swift_task_asyncMainDrainQueueImpl(): error: undefined reference to 'dispatch_main'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

Obviously because libdispatch for some reason was built for armv7 instead for aarch64 :)

{0}vova@MacBook-Pro:swift-everywhere-toolchain$ file /Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/lib/swift/android/aarch64/libswiftCore.so
/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/lib/swift/android/aarch64/libswiftCore.so: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, BuildID[sha1]=994cfd8863a2c520eb9e21ff8538133e63c478ca, with debug_info, not stripped
{0}vova@MacBook-Pro:swift-everywhere-toolchain$ file /Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/lib/swift/android/aarch64/libdispatch.so
/Volumes/Shared/Git/MyProjects/swift-everywhere-toolchain/ToolChain/Build/darwin-aarch64/swift-stdlib/lib/swift/android/aarch64/libdispatch.so: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), dynamically linked, BuildID[sha1]=b8dfcdb8a04a347ce81569ad7dcec4457acf3e8f, with debug_info, not stripped
{0}vova@MacBook-Pro:swift-everywhere-toolchain$

[vgorloff]

For some reason the option CMAKE_SYSTEM_PROCESSOR set as armv7-a in file /.../CMakeFiles/3.22.0/CMakeSystem.cmake for libdispatch subproject. At the same time stdlib itself has value for the same option set as aarch64. Which is correct one.

[vgorloff]

The above issue fixed by passing Cmake flag -DANDROID_ABI=${ANDROID_ABI} to the libdispatch subproject.

[vgorloff]

Ok. I am able to build stdlib with libswift_Concurrency.so for all 4 Android archs: arm 32/64 bit and x86 32/64 bit.

Now it is time to make clean rebuild of Swift, stdlib, libDispatch, libFoundation and then try Async/Await example again.

[johnburkey]

Yay!

On Jan 6, 2022, at 4:13 AM, Vlad Gorlov @.***> wrote:

 Ok. I am able to build stdlib with libswift_Concurrency.so for all 4 Android archs: arm 32/64 bit and x86 32/64 bit.

Now it is time to make clean rebuild of Swift, stdlib, libDispatch, libFoundation and then try Async/Await example again.

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[vgorloff]

But sample code which works on macOS crashes with Segmentation fault on Android :0

[johnburkey]

Getting closer!

On Jan 6, 2022, at 8:55 AM, Vlad Gorlov @.***> wrote:

But sample code which works on macOS crashes with Segmentation fault on Android :0

— Reply to this email directly, view it on GitHub https://github.com/vgorloff/swift-everywhere-toolchain/issues/138#issuecomment-1006654303, or unsubscribe https://github.com/notifications/unsubscribe-auth/AC5F3PIP2MVFZVD6ODCD4J3UUWUONANCNFSM5K57HZOQ. You are receiving this because you authored the thread.

[vgorloff]

I will try one idea, but if it won't work, then I will come back to troubleshooting after next major release of Swift - Swift 5.5.3 or Swift 5.6.0.

The Swift Concurrency is experimental thing. Even Cmake option, which is used to activate this feature, defined as following -D SWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY=TRUE/FALSE

[johnburkey]

I think that flag is the old flag when it was experimental - i haven’t had any issues with the feature since they fixed the bugs just post 5.5.

I’m sure compnerd has good advice on this - find him in the slack channel ?

On Jan 6, 2022, at 9:11 AM, Vlad Gorlov @.***> wrote:

 I will try one idea, but if it won't work, then I will come back to troubleshooting after next major release of Swift - Swift 5.5.3 or Swift 5.6.0.

The Swift Concurrency is experimental thing. Even Cmake option, which is used to activate this feature, defined as following -D SWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY=TRUE/FALSE

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