Android NDK - Undefined reference to Android::Mutex, Android::AudioTrack

Question

I\'m getting strange undefined references at link time for Android::Mutex and Android::AudioTrack used by a project I have taken over.

Does anyone have any ideas? There

Answer 1

Well these are some strange errors... It looks like every time you reference something from the android::Mutex or the android::AudioTrack libraries the linker is unable to find those functions. All I can say is that since those libraries are not part of the android standard library, make sure you have them in your build path, otherwise best of luck.

Answer 2

This plagued me as well - but I finally resolved it by linking with Bionic's header (bionic/libc/include), and - the important part - #define'ing HAVE_PTHREADS (i.e. add LOCAL_CFLAGS += HAVE_PTHREADS).