alsa的依赖库使用的版本是alsa-lib-1.0.27.2，编译配置为：./configure –host=arm-linux-gnueabihf –prefix=/usr/local/alsa –enable-shared –disable-python –with-configdir=/usr/local/alsa/share/alsa –with-plugindir=/usr/local/alsa/lib CC=arm-linux-gnueabihf-gcc CXX=arm-linux-gnueabihf-g++ LD=arm-linux-gnueabihf-ld。注意–with-configdir配置选项，这个是在嵌入式板子上加载配置的路径。
然后是mplayer1.3.0的编译，配置为：
./configure –prefix=/usr/local/mplayer –enable-cross-compile –target=arm-linux-gnueabihf –cc=arm-linux-gnueabihf-gcc –host-cc=gcc-6 –as=arm-linux-gnueabihf-as –ar=arm-linux-gnueabihf-ar –ranlib=arm-linux-gnueabihf-ranlib –enable-alsa –yasm=” –disable-vidix –disable-ossaudio –disable-vdpau –disable-lirc –disable-win32dll –disable-ivtv –disable-dvdnav –enable-fbdev –disable-live –disable-mencoder –disable-mmx –disable-mmxext –disable-sse –disable-sse2 –disable-ssse3 –disable-cmov –extra-cflags=”-I/usr/local/alsa/include -I/usr/local/zlib/include” –extra-ldflags=”-L/usr/local/zlib/lib -L/usr/local/alsa/lib”
该配置测试过在mplayer1.1.0上编译，不成功报如下错误，不知道怎么解决：
libavcodec/arm/dca.h:36:5: error: can’t find a register in class ‘CORE_REGS’ while reloading ‘asm’
libavcodec/arm/dca.h:36:5: error: ‘asm’ operand has impossible constraints
