Applying ./patches/001-use-kernel-byteorder.patch using plaintext: 
patching file include/drv_types.h

Applying ./patches/010-remove-extra-cflags.patch using plaintext: 
patching file Makefile

Applying ./patches/020-remove-repeat-flies.patch using plaintext: 
patching file include/drv_conf.h
patching file include/linux/old_unused_rtl_wireless.h (renamed from include/linux/wireless.h)
patching file include/rtl_autoconf.h (renamed from include/autoconf.h)

Applying ./patches/030-change-value-of-vht-enable.patch using plaintext: 
patching file os_dep/linux/os_intfs.c

Applying ./patches/040-wireless-5.8.patch using plaintext: 
patching file os_dep/linux/ioctl_cfg80211.c
patching file os_dep/linux/os_intfs.c
make[3]: Entering directory '/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/linux-5.4.203'
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_cmd.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_security.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_debug.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_io.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_ioctl_query.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_ioctl_set.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_ieee80211.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_mlme.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_mlme_ext.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_mi.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_wlan_util.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_vht.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_pwrctrl.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_rf.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_recv.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_sta_mgt.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_ap.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/mesh/rtw_mesh.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/mesh/rtw_mesh_pathtbl.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/mesh/rtw_mesh_hwmp.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_xmit.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_p2p.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_rson.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_tdls.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_br_ext.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_iol.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_sreset.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_btcoex_wifionly.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_btcoex.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_beamforming.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_odm.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_rm.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_rm_fsm.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/efuse/rtw_efuse.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/osdep_service.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/os_intfs.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/usb_intf.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/usb_ops_linux.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_linux.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/xmit_linux.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/mlme_linux.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/recv_linux.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_cfg80211.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/rtw_cfgvendor.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/wifi_regd.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/rtw_android.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/rtw_proc.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/rtw_rhashtable.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.o
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_write_reg':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:46:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length + 1];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_read_reg':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:132:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length + 1];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_write_rf':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:266:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_read_rf':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:308:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_rate':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:413:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length + 1];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_channel':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:463:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length + 1];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_ch_offset':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:490:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length + 1];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_bandwidth':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:517:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_txpower_index':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:550:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length + 1];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_txpower':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:596:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_ant_tx':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:634:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length + 1];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_ant_rx':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:682:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length + 1];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_disable_bt_coexist':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:862:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8 input[wrqu->data.length + 1];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_arx':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:900:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_pwrtrk':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1085:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_psd':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1123:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length + 1];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_dump':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1244:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_phypara':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1268:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_SetRFPath':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1294:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_switch_rf_path':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1345:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->length];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_QueryDrv':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1394:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  char input[wrqu->data.length];
  ^~~~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_PwrCtlDM':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:1423:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->length];
  ^~
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_hwtx':
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/os_dep/linux/ioctl_mp.c:2073:2: warning: ISO C90 forbids variable length array 'input' [-Wvla]
  u8  input[wrqu->data.length];
  ^~
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_intf.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_com.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_com_phycfg.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_phy.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_dm.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_dm_acs.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_btcoex_wifionly.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_btcoex.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_mp.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_mcc.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_hci/hal_usb.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/led/hal_led.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/led/hal_usb_led.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/hal_halmac.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/rtl8821c_halinit.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/rtl8821c_mac.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/rtl8821c_cmd.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/rtl8821c_phy.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/rtl8821c_dm.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/rtl8821c_ops.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/hal8821c_fw.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/usb/rtl8821cu_halinit.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/usb/rtl8821cu_halmac.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/usb/rtl8821cu_io.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/usb/rtl8821cu_xmit.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/usb/rtl8821cu_recv.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/usb/rtl8821cu_led.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/rtl8821c/usb/rtl8821cu_ops.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/efuse/rtl8821c/HalEfuseMask8821C_USB.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_api.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_bb_rf_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_cfg_wmac_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_common_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_efuse_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_flash_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_fw_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_gpio_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_init_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_mimo_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_pcie_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_sdio_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_usb_88xx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_cfg_wmac_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_common_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_gpio_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_init_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_pcie_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_phy_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_pwr_seq_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_sdio_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/halmac/halmac_88xx/halmac_8821c/halmac_usb_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_debug.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_antdiv.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_soml.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_smt_ant.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_antdect.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_interface.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_phystatus.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_hwconfig.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_dig.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_pathdiv.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_rainfo.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_dynamictxpower.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_adaptivity.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_cfotracking.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_noisemonitor.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_beamforming.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_dfs.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/txbf/halcomtxbf.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/txbf/haltxbfinterface.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/txbf/phydm_hal_txbf_api.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_adc_sampling.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_ccx.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_psd.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_primary_cca.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_cck_pd.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_rssi_monitor.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_auto_dbg.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_math_lib.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_api.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_pow_train.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/phydm_lna_sat.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/halrf.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/halrf_debug.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/halphyrf_ce.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/halrf_powertracking_ce.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/halrf_powertracking.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/halrf_kfree.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/rtl8821c/halhwimg8821c_bb.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/rtl8821c/halhwimg8821c_mac.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/rtl8821c/halhwimg8821c_rf.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/rtl8821c/phydm_hal_api8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/rtl8821c/phydm_regconfig8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/rtl8821c/halrf_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/phydm/halrf/rtl8821c/halrf_iqk_8821c.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/btc/halbtc8821cwifionly.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/btc/halbtc8821c1ant.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/hal/btc/halbtc8821c2ant.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/platform/platform_ops.o
  CC [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/core/rtw_mp.o
  LD [M]  /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.o
  Building modules, stage 2.
  MODPOST 1 modules
ERROR: "__fixdfsi" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__truncdfsf2" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__floatsidf" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__divdf3" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__adddf3" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__ledf2" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__subdf3" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__muldf3" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__subsf3" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__fixsfsi" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__fixunsdfsi" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__floatunsidf" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__gedf2" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__lesf2" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__ltdf2" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__gtdf2" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
ERROR: "__floatsisf" [/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/rtl8821cu.ko] undefined!
make[4]: *** [scripts/Makefile.modpost:94: __modpost] Error 1
make[3]: *** [Makefile:1647: modules] Error 2
make[3]: Leaving directory '/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/linux-5.4.203'
make[2]: *** [Makefile:85: /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_mips32_musl/linux-ath25/rtl8821cu-2020-12-19-428a0820/.built] Error 2
time: package/kernel/rtl8821cu/compile#86.14#9.54#87.49