tce-load -i compiletc cmake

wget https://bitbucket.org/multicoreware/x265/downloads/x265_3.3.tar.gz

cd x265_3.3

patch -Np1 -i ../x265-arm-asm-primitives.patch

edit source/CMakeLists.txt
 find_package(Neon)
 if(CPU_HAS_NEON)
      set(ARM_ARGS -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -marm -fPIC)       
 else()
      set(ARM_ARGS -march=armv6zk -mtune=arm1176jzf-s -mfpu-vfp -marm -fPIC)
 endif()

mkdir build_x265
cd build_x265

cmake -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_BUILD_TYPE=Release -DCMAKE_VERBOSE_MAKEFILE=TRUE ../source

find . -name flags.make -type f -exec sed -i 's/-O3/-Os/g' {} \;
find . -name link.txt -type f -exec sed -i 's/-O3/-Os/g' {} \;

[-fno-rtti fails]

make [21m 21.65s]
sudo make install