Mips compile error.

I compiled success in armeabi-v7a, arm64-v8a, x86 and x86_64 but I got this error with mips:

CC	libavcodec/mips/aacsbr_mips.o
libavcodec/mips/aacdec_mips.c:107:29: warning: unused function 'lcg_random'
      [-Wunused-function]
static av_always_inline int lcg_random(unsigned previous_val)
                            ^
CC	libavcodec/mips/ac3dsp_mips.o
libavcodec/mips/aacdec_mips.c:379:13: error: couldn't allocate output register
      for constraint 'r'
            ".set push                                  \n\t"
            ^
1 warning and 1 error generated.
make[1]: *** [libavcodec/mips/aacdec_mips.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory `/home/pedro/AndroidStudioProjects/vlc-android/vlc/contrib/contrib-android-mipsel-linux-android/ffmpeg'
make: *** [.ffmpeg] Error 2
contribs: make failed