static library libs/libvpx/libvpx.a is not portable!

错误如下：

*** Warning: Linking the shared library libfreeswitch.la against the
*** static library libs/libvpx/libvpx.a is not portable!      

解决办法：

./configure \
    --enable-pic \
    --enable-static \
    --enable-shared \
    --as=yasm \
    --target=generic-gnu