x264:cannot find yasm

其实需要的是nasm

解决：安装nasm

wget http://www.nasm.us/pub/nasm/releasebuilds/2.13.01/nasm-2.13.01.tar.xz
xz -d nasm-2.13.01.tar.xz
tar xvf nasm-2.13.01.tar
cd nasm-2.13.01
./autogen.sh
./configure
make -j4
make install

即可顺利通过configure.