v8 linker issues for android build on Mac

[Mindy DelliCarpini]

I built libv8_base, libv8_libbase,  these as full static libraries:

args.gn:

is_debug = false

target_cpu = "arm"

v8_target_cpu = "arm"

target_os="android"

v8_static_library = true

Errors:

...android-ndk-r10b/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: jni/libpng.a: no archive symbol table (run ranlib)

...android-ndk-r10b/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: jni/libv8_libbase.a: no archive symbol table (run ranlib)

...android-ndk-r10b/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/ld: error: jni/libv8_libplatform.a: no archive symbol table (run ranlib)

Follow by a bunch of unsatisfied linker errors:

jni/BoomListPackagesAndroid.cpp:124: error: undefined reference to 'v8::Object::Set(v8::Local<v8::Value>, v8::Local<v8::Value>)'

jni/BoomListPackagesAndroid.cpp:125: error: undefined reference to 'v8::Object::Set(v8::Local<v8::Value>, v8::Local<v8::Value>)'

jni/BoomListPackagesAndroid.cpp:126: error: undefined reference to 'v8::Object::Set(v8::Local<v8::Value>, v8::Local<v8::Value>)'

jni/../../src/common/js/v8/BoomEngine.v8.cpp:31: error: undefined reference to 'v8::Isolate::GetCurrent()'

....

I'm building on MacOSX for Android; I would guess the linker errors are because of the no archive symbol table error at the top...

How can I fix them?

[Jochen Eisinger]

Using gn to build for android on mac is not yet supported, sorry (and I realize that the make based version is also no longer supported...) sorry about that :/

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[Mindy DelliCarpini]

Thoughts on when it might be supported?

Or any prebuilts? I know you had been submitting patches in December to move this forward

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[Jochen Eisinger]

it's blocked on the NDK we download not supporting Darwin, and that's a bit outside of my scope to change myself, so no idea when it'll be available

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[Dzung Tran]

How do you build one libv8.so file for Android? I am using Ubuntu. What would be the correct GN args? I can't seem to get a libv8.so. I am getting bunch of archive files.

[Mindy DelliCarpini]

I have copied over the Darwin support from a previous NDK

Is there something specific that might be causing the linker issues? Perhaps which -ar is used? If so, where would I fix that? 

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[Mindy DelliCarpini]

@dzung: I changed args.gn to include:  'standalone_static_library'=true to build a .so for Android 

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[Dzung Tran]

I used Ubuntu VM to build on the MAC and it works fine. I thought I read some where that buildng on the MAC does not work

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