CrystaX NDK

I tried to use crystax as a drop-in replacement to build our project.

A dependency of our project is GnuTLS 3.3, Using the vanilla NDK, GnuTLS compiles and links fine.
With CrystaX, GnuTLS compiles successfully, however when linking with it the following error happens:

libtool: link: arm-linux-androideabi-g++ --sysroot=/home/adrien/crystax-ndk-10.1.0/platforms/android-15/arch-arm -g -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -O2 -DHAVE_PTHREADS -I/home/adrien/crystax-ndk-10.1.0/sources/cxx-stl/gnu-libstdc++/4.9/include -I/home/adrien/crystax-ndk-10.1.0/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/include -DNDEBUG -I/home/adrien/sfl/ring-client-android/ring/contrib/arm-linux-androideabi/include -g -g -fPIC -O3 -std=c++11 -march=armv7-a -Wl,--fix-cortex-a8 -o dhtnode dhtnode.o /home/adrien/sfl/ring-client-android/ring/contrib/native/opendht/src/.libs/libopendht.a -L/home/adrien/crystax-ndk-10.1.0/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a -L/home/adrien/sfl/ring-client-android/ring/contrib/arm-linux-androideabi/lib -L../src/.libs /home/adrien/sfl/ring-client-android/ring/contrib/arm-linux-androideabi/lib/libgnutls.a -lnettle -lhogweed -lz /home/adrien/sfl/ring-client-android/ring/contrib/arm-linux-androideabi/lib/libgmp.a -lgnustl_static
./gnutls_num.h:87: error: undefined reference to 'swap32'
./gnutls_num.h:111: error: undefined reference to 'swap32'
./gnutls_num.h:130: error: undefined reference to 'swap16'
./gnutls_num.h:102: error: undefined reference to 'swap32'
./../gnutls_num.h:102: error: undefined reference to 'swap32'
./../gnutls_num.h:121: error: undefined reference to 'swap16'
./../gnutls_num.h:121: error: undefined reference to 'swap16'
./../gnutls_num.h:130: error: undefined reference to 'swap16'
collect2: error: ld returned 1 exit status