I've got some patches but they are pretty ugly and I want to clean them up 
properly before submitting...

> On Feb 13, 2019, at 8:41 AM, Jordan Schidlowsky <jor...@noodlecake.com> wrote:
> 
> An NDK app can chose to bundle in a (c++_shared) library in your app, or you 
> can link with a static (c++_static) standard library.   This is actually 
> dependant on what setting you chose for this in your gradle build file, as 
> gradle will pass that along to cmake which will link it in.  
> 
> That cxx runtime test doesn't quite work correctly using an android 
> toolchain.  But if you want to configure your ndk app using c++_static you 
> can remove that test section from CMakeLists.txt and add in manually below:
> 
> set(CXXRT_IS_STDLIB true)
> target_link_libraries(objc c++_static stdc++)
> 
> I will also note, that I am still thinking about a way to run that test suite 
> while cross compiling...     
> 
> 
>> On Feb 13, 2019, at 6:41 AM, Gregory Casamento <greg.casame...@gmail.com 
>> <mailto:greg.casame...@gmail.com>> wrote:
>> 
>> 
>> A little more context...  my build environment is a MacPro 2010 running the 
>> latest version of Mojave.  I have downloaded and installed the latest of 
>> Android studio and installed the latest SDK and NDK using the menu under 
>> tools and the SDK manager.  The version of the NDK I'm using is 
>> 19.0.5232133.   I am utterly stumped as to why this is not working.  Also, 
>> it seems as though Ivan's installation of this is working which seems to 
>> indicate that this is a configuration issue.
>> 
>> Any input would be appreciated.
>> 
>> On Wed, Feb 13, 2019 at 7:09 AM Gregory Casamento <greg.casame...@gmail.com 
>> <mailto:greg.casame...@gmail.com>> wrote:
>> 
>> ### Build libobjc2
>> -- The ASM compiler identification is Clang
>> -- Found assembler: 
>> /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang
>> -- Check for working C compiler: 
>> /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang
>> -- Check for working C compiler: 
>> /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang
>>  -- works
>> -- Detecting C compiler ABI info
>> -- Detecting C compiler ABI info - done
>> -- Detecting C compile features
>> -- Detecting C compile features - done
>> -- Check for working CXX compiler: 
>> /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++
>> -- Check for working CXX compiler: 
>> /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++
>>  -- works
>> -- Detecting CXX compiler ABI info
>> -- Detecting CXX compiler ABI info - done
>> -- Detecting CXX compile features
>> -- Detecting CXX compile features - done
>> -- Testing C++ interop
>> -- Testing C++ standard library
>> -- No useable C++ runtime found
>> -- Looking for pthread.h
>> -- Looking for pthread.h - found
>> -- Looking for pthread_create
>> -- Looking for pthread_create - found
>> -- Found Threads: TRUE  
>> -- GNUstep install type set to NONE
>> -- Performing Test CXA_ALLOCATE_EXCEPTION_NOEXCEPT_COMPILES
>> -- Performing Test CXA_ALLOCATE_EXCEPTION_NOEXCEPT_COMPILES - Success
>> -- Configuring done
>> -- Generating done
>> -- Build files have been written to: 
>> /Users/heron/Development/Algoriddim/gnustep-toolchain/gnustep-android/gnustep/libobjc2/build
>> /Users/heron/Development/Algoriddim/gnustep-toolchain/gnustep-android/gnustep/libobjc2/build/CMake
>> [1/1] Linking CXX executable test_cxx_runtime
>> FAILED: test_cxx_runtime 
>> : && 
>> /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++
>>  --target=armv7-none-linux-androideabi16 
>> --gcc-toolchain=/Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64
>>   --sysroot 
>> /Users/heron/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/sysroot
>>  -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables 
>> -fstack-protector-strong -no-canonical-prefixes -mfpu=vfpv3-d16 -fno-addrsig 
>> -mthumb -Wa,--noexecstack -Wformat -Werror=format-security -stdlib=libc++  
>> -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ 
>> -Wl,--build-id -Wl,--warn-shared-textrel  -Wl,--exclude-libs,libunwind.a 
>> -Wl,--no-undefined -Qunused-arguments -Wl,-z,noexecstack -Wl,-z,relro 
>> -Wl,-z,now -Wl,--gc-sections 
>> CMakeFiles/test_cxx_runtime.dir/typeinfo_test.cc.o  -o test_cxx_runtime  
>> -latomic -lm && :
>> CMakeFiles/test_cxx_runtime.dir/typeinfo_test.cc.o:typeinfo_test.cc 
>> <http://typeinfo_test.cc/>:vtable for type_info2: error: undefined reference 
>> to 'std::type_info::__do_upcast(__cxxabiv1::__class_type_info const*, 
>> void**) const'
>> clang++: error: linker command failed with exit code 1 (use -v to see 
>> invocation)
>> ninja: build stopped: subcommand failed.
>> ### LIBOBJC2 BUILD FAILED!!!
>> 
>> I am running into the above error when trying to build for Android.  I have 
>> the latest ndk and sdk installed with Android studio.  Does anyone have any 
>> idea offhand why C++ isn't finding it's runtime?   I will attach the build 
>> script I am using to generate the ninja script....
>> 
>> GC
>> 
>> -- 
>> Gregory Casamento
>> GNUstep Lead Developer / OLC, Principal Consultant
>> http://www.gnustep.org 
>> <https://mailtrack.io/trace/link/ddde09d325c4a435e025a98cecb523c42a3faad5?url=http%3A%2F%2Fwww.gnustep.org&userId=2790543&signature=7d37ec23bb82ff44>
>>  - http://heronsperch.blogspot.com 
>> <https://mailtrack.io/trace/link/df5b3556d0922a9f737f08b0905d6385e611c5f0?url=http%3A%2F%2Fheronsperch.blogspot.com&userId=2790543&signature=6bb167a403644460>
>> http://ind.ie/phoenix/ 
>> <https://mailtrack.io/trace/link/92bcebdbb9fc372e2cf08a7e499372cc1cd5d151?url=http%3A%2F%2Find.ie%2Fphoenix%2F&userId=2790543&signature=8fd8e7cffa9021e7>
>> 
>> -- 
>> Gregory Casamento
>> GNUstep Lead Developer / OLC, Principal Consultant
>> http://www.gnustep.org 
>> <https://mailtrack.io/trace/link/1247d0089e9dd2e1ac83c838552d393752c8b833?url=http%3A%2F%2Fwww.gnustep.org&userId=2790543&signature=5a652f77cc91a2ea>
>>  - http://heronsperch.blogspot.com 
>> <https://mailtrack.io/trace/link/ff75bfb4c582f91790e81a5fdd96eeb51aab0274?url=http%3A%2F%2Fheronsperch.blogspot.com&userId=2790543&signature=59cf8dcbd3b3253d>
>> http://ind.ie/phoenix/ 
>> <https://mailtrack.io/trace/link/5bd6878a79f878c78ef8f1630a2dfde8e09e51af?url=http%3A%2F%2Find.ie%2Fphoenix%2F&userId=2790543&signature=043c717e06ac9c32>_______________________________________________
>> Discuss-gnustep mailing list
>> discuss-gnus...@gnu.org <mailto:discuss-gnus...@gnu.org>
>> https://lists.gnu.org/mailman/listinfo/discuss-gnustep 
>> <https://lists.gnu.org/mailman/listinfo/discuss-gnustep>

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