This is libevent-2.0.22-stable from http://libevent.org/. No changes were made apart from the following: * copied LICENSE to NOTICE * added empty MODULE_LICENSE_BSD_LIKE * Removed directories: - WIN32-Code - compat - m4 - sample - test * added Android.mk * added CleanSpec.mk * added missing include of event-internal.h to buffer.c * added custom include/event2/event-config.h To uprev this project, you'll likely need to reverse engineer the autotools generated makefiles again. This is the recipe I used: BRANCH_ROOT=/usr/local/google/home/wiley/mnc-dev PATH="${BRANCH_ROOT}/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin:${PATH}" NDK_ROOT="${BRANCH_ROOT}/prebuilts/ndk/current/platforms/android-21/arch-arm64/usr" ./configure --host=arm --build=`./config.guess` \ CC=arm-eabi-gcc \ CPPFLAGS="-I${NDK_ROOT}/usr/include" \ CFLAGS="-nostdlib -Wl,-rpath-link=${BRANCH_ROOT}/out/target/product/hammerhead/obj/lib -L${BRANCH_ROOT}/out/target/product/hammerhead/obj/lib -I${BRANCH_ROOT}/prebuilts/ndk/current/platforms/android-21/arch-arm/usr/include" \ LIBS="-lc " Note that I built hammerhead first and used prebuilts from the most recent NDK.