make[1]: Entering directory `/usr/src/linux-headers-3.14.0-031400rc4-lowlatency'
  CC [M]  /home/mauro/Desktop/rtl8723be/base.o
  CC [M]  /home/mauro/Desktop/rtl8723be/rc.o
  CC [M]  /home/mauro/Desktop/rtl8723be/debug.o
  CC [M]  /home/mauro/Desktop/rtl8723be/regd.o
  CC [M]  /home/mauro/Desktop/rtl8723be/efuse.o
  CC [M]  /home/mauro/Desktop/rtl8723be/cam.o
  CC [M]  /home/mauro/Desktop/rtl8723be/ps.o
  CC [M]  /home/mauro/Desktop/rtl8723be/core.o
  CC [M]  /home/mauro/Desktop/rtl8723be/stats.o
  CC [M]  /home/mauro/Desktop/rtl8723be/pci.o
  LD [M]  /home/mauro/Desktop/rtl8723be/rtlwifi.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /home/mauro/Desktop/rtl8723be/rtlwifi.mod.o
  LD [M]  /home/mauro/Desktop/rtl8723be/rtlwifi.ko
make[1]: Leaving directory `/usr/src/linux-headers-3.14.0-031400rc4-lowlatency'
make[1]: Entering directory `/home/mauro/Desktop/rtl8723be/btcoexist'
make -C /lib/modules/3.14.0-031400rc4-lowlatency/build M=/home/mauro/Desktop/rtl8723be/btcoexist modules
make[2]: Entering directory `/usr/src/linux-headers-3.14.0-031400rc4-lowlatency'
  CC [M]  /home/mauro/Desktop/rtl8723be/btcoexist/halbtc8723b2ant.o
  CC [M]  /home/mauro/Desktop/rtl8723be/btcoexist/halbtcoutsrc.o
  CC [M]  /home/mauro/Desktop/rtl8723be/btcoexist/rtl_btc.o
  LD [M]  /home/mauro/Desktop/rtl8723be/btcoexist/btcoexist.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /home/mauro/Desktop/rtl8723be/btcoexist/btcoexist.mod.o
  LD [M]  /home/mauro/Desktop/rtl8723be/btcoexist/btcoexist.ko
make[2]: Leaving directory `/usr/src/linux-headers-3.14.0-031400rc4-lowlatency'
make[1]: Leaving directory `/home/mauro/Desktop/rtl8723be/btcoexist'
make[1]: Entering directory `/home/mauro/Desktop/rtl8723be/rtl8723be'
make -C /lib/modules/3.14.0-031400rc4-lowlatency/build M=/home/mauro/Desktop/rtl8723be/rtl8723be modules
make[2]: Entering directory `/usr/src/linux-headers-3.14.0-031400rc4-lowlatency'
  CC [M]  /home/mauro/Desktop/rtl8723be/rtl8723be/hw.o
  CC [M]  /home/mauro/Desktop/rtl8723be/rtl8723be/table.o
  CC [M]  /home/mauro/Desktop/rtl8723be/rtl8723be/sw.o
  CC [M]  /home/mauro/Desktop/rtl8723be/rtl8723be/trx.o
/home/mauro/Desktop/rtl8723be/rtl8723be/trx.c: In function ‘rtl8723be_rx_query_desc’:
/home/mauro/Desktop/rtl8723be/rtl8723be/trx.c:621:3: error: implicit declaration of function ‘_ieee80211_is_robust_mgmt_frame’ [-Werror=implicit-function-declaration]
   if ((_ieee80211_is_robust_mgmt_frame(hdr)) &&
   ^
cc1: some warnings being treated as errors
make[3]: *** [/home/mauro/Desktop/rtl8723be/rtl8723be/trx.o] Error 1
make[2]: *** [_module_/home/mauro/Desktop/rtl8723be/rtl8723be] Error 2
make[2]: Leaving directory `/usr/src/linux-headers-3.14.0-031400rc4-lowlatency'
make[1]: *** [default] Error 2
make[1]: Leaving directory `/home/mauro/Desktop/rtl8723be/rtl8723be'
make: *** [all] Error 2