Trying to build QMsgPack lib for Android 6.2.0 Clang arm64-v8a

Kris Revi

Following this -> https://qmsgpack.readthedocs.io/en/latest/install.html

at the bottom it states Also you can just open qmsgpack.pro in Qt Creator and build it from there.

and that's what i did!

This is the Compile Output

C:\AndroidSDK\ndk\21.3.6528147/toolchains/llvm/prebuilt/windows-x86_64/bin/../lib/gcc/aarch64-linux-android/4.9.x/../../../../aarch64-linux-android/bin\ld: cannot find -lqmsgpackd
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [Makefile:69: libtst_streamtest_arm64-v8a.so] Error 1
make[2]: Leaving directory 'C:/build-qmsgpack-Android_Qt_6_2_0_Clang_arm64_v8a-Release/tests/stream'
make[1]: *** [Makefile:47: sub-stream-make_first] Error 2
make[1]: Leaving directory 'C:/build-qmsgpack-Android_Qt_6_2_0_Clang_arm64_v8a-Release/tests'
make: *** [Makefile:73: sub-tests-make_first] Error 2
15:48:55: The process "C:\AndroidSDK\ndk\21.3.6528147\prebuilt\windows-x86_64\bin\make.exe" exited with code 2.
Error while building/deploying project qmsgpack (kit: Android Qt 6.2.0 Clang arm64-v8a)
When executing step "Make"
15:48:55: Elapsed time: 00:06.

now is there something i've missed or is there some error in the lib for Qt 6.2.0 or android?

Kris Revi

so i can build it for the kit Desktop Qt 6.2.0 MinGw 64-bit but i dunno what todo from here :S

Kris Revi

so it works for the kit Desktop Qt 6.2.0 MinGw 64-bit but not for Android 6.2.0 Clang arm64-v8a

Error:

SGaist

Hi,

The last image suggest that you may be trying to use the version of QMsgPack that you built for a different architecture.

How did that file end up in that folder ?

Kris Revi

@SGaist so i need to remove everything, download QMsgPack again, open the .pro file and ONLY build for Android 6.2.0 Clang arm64-v8a kit and not for Desktop Qt 6.2.0 MinGw 64-bit

SGaist

Do out of source builds, so you can use it for all the target platforms you need.

Kris Revi

@SGaist out of source? im not good with this compiling / building lib thing

SGaist

Literally: "Do not build in the sources".

By default Qt Creator uses shadow builds which are out of source builds.

Kris Revi

@SGaist

tick off this?

SGaist

On the contrary, keep it.

If you have already used it, then it's strange that building your application it looked for the library in the wrong place.

How are you pointing to it in your main project ?

Kris Revi

@SGaist the error comes from the trying to build the QMsgPack from the .pro file!

SGaist

There's an issue in the .pro file. It does not properly set dependencies so you might be building the tests before the library.

Either switch to cmake since Qt Creator also supports it or change the .pro file. See here.

Kris Revi

@SGaist

here you mean?

SGaist

No, modify the qmsgpack.pro file content.

Kris Revi

@SGaist this is the entire content for qmsgpack.pro

TEMPLATE = subdirs

SUBDIRS += \
    src \
    tests

SGaist

I know, and that's the one you need to modify in order to ensure that src is built before tests following the instructions in the wiki I linked in my previous message.

The alternative is to comment out tests and the backslash after src but you won't have the tests built.

Kris Revi

@SGaist do i even need the tests? :S

SGaist

Technically it ensures that the library is working properly if they run.

Kris Revi

@SGaist ah, cause i tested now with "tests" commented out and all i got was

SGaist

Did you also comment out the \ as suggested ?