Please note that I switched libaom to nasm from default yasm assembler in my nasm integration patch
-libaom.cfg_params?= -DENABLE_TESTS=no -DCMAKE_BUILD_TYPE=Release -DENABLE_DOCS=no -DENABLE_SHARED=no -DCMAKE_INSTALL_LIBDIR=lib \
+libaom.cfg_params?= -DENABLE_NASM=1 -DCMAKE_ASM_NASM_FLAGS=-I$(call bld_path,libaom)/ -DENABLE_TESTS=no -DCMAKE_BUILD_TYPE=Release -DENABLE_DOCS=no -DENABLE_SHARED=no -DCMAKE_INSTALL_LIBDIR=lib \
-DENABLE_EXAMPLES=no -DCMAKE_INSTALL_PREFIX=$(call bld_path,libaom)/usr/local
libaom.mak_params?= ; $(MAKE) -C libaom*/aom.build install
and tested it as such on ubuntu 16.04.