Build continue despites libffi.la compilation failing.

[tshirtman]

Versions

• Python: 3.6 (host) 3.7 (p4a)
• OS: ubuntu 18.04 (docker)
• Kivy: master
• Cython: 0.28.6

Description

Because autogen was missing, libffi.la was failing to build, but that didn't the full build for going through, so it was confusing to understand why _ctypes wasn't available, and rebuilding would have no effect because python was considered successfully built, had to nuke .buildozer/android/platform and build everything again.

[aranc]

Hi, are you refering to these error messages?

dlopen("/data/data/<package name>/files/app/lib/python2.7/lib-dynload/_io.so", RTLD_LAZY) failed: dlopen failed: library "/data/data/<package name>.timetrack/files/app/lib/python2.7/lib-dynload/_io.so" not found

dlopen("/data/data/<package name>/files/app/lib/python2.7/lib-dynload/_ctypes.so", RTLD_LAZY) failed: dlopen failed: library "/data/data/<package name>.timetrack/files/app/lib/python2.7/lib-dynload/_ctypes.so" not found

When I'm starting a Kivy app on Android, the app crash after seeing the splash screen and these messages appear in logcat.

I also see an error when compiling libffi.la, but I see a message that it's expected to not compile:

Makefile:1176: recipe for target 'libffi.la' failed
make: *** [libffi.la] Error 1


  STDERR:

                                                                                                                                                                                             
[INFO]:    make libffi.la failed as expected

I also see some Verbose level messages about failure to load "libpython2.7.so", "libpython3.5m.so", etc. (Library loading error: dalvik.system.PathClassLoader[DexPathList[[zip file...)

I installed autogen and removed .buildozer/android/platform but the issue remained (still can't load _ctypes.so / Android app crash on start).

[tshirtman]

yes, cython recipes are always expected to fail first, but to work just after (in the same build), i think in this case i had both failing, and rebuilding after install libffi-dev worked as expected, didn't try to reproduce though.

And also yes, the result was a message indicating inability to load _ctypes.so, but i didn't keep a copy of the error.