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Make dkms error for linux 4.20 #12

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AmyangXYZ opened this issue Dec 31, 2018 · 0 comments · May be fixed by #14
Open

Make dkms error for linux 4.20 #12

AmyangXYZ opened this issue Dec 31, 2018 · 0 comments · May be fixed by #14

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@AmyangXYZ
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DKMS make.log for rtl8821cu-5.2.5.3_24795.20171031.r18.g0278eaa for kernel 4.20.0-arch1-1-ARCH (x86_64)
Mon Dec 31 17:08:57 CST 2018
make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/4.20.0-arch1-1-ARCH/build M=/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build  modules
make[1]: Entering directory '/usr/lib/modules/4.20.0-arch1-1-ARCH/build'
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_cmd.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_security.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_debug.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_io.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_cmd.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_debug.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_io.c:52:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_security.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_cmd.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_debug.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_io.c:52:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_security.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ioctl_query.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ioctl_set.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ieee80211.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ioctl_query.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ioctl_query.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mlme.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mlme_ext.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ioctl_set.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ioctl_set.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ieee80211.c:25:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ieee80211.c:25:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mi.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/../hal/phydm/phydm_types.h:191,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/../hal/phydm/phydm_precomp.h:24,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/hal_data.h:25,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mlme.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/../hal/phydm/phydm_types.h:191,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/../hal/phydm/phydm_precomp.h:24,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/hal_data.h:25,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mlme.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mlme_ext.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mlme_ext.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_wlan_util.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mi.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_mi.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_wlan_util.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_wlan_util.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_vht.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_pwrctrl.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_vht.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_vht.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_pwrctrl.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_pwrctrl.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_rf.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_recv.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_sta_mgt.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ap.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_rf.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_rf.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_recv.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_recv.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_sta_mgt.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_sta_mgt.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_xmit.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_p2p.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ap.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_ap.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_p2p.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_p2p.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_xmit.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_xmit.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_tdls.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_br_ext.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_tdls.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_tdls.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_iol.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_sreset.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_btcoex_wifionly.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_br_ext.c:32:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_br_ext.c:32:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_iol.c:21:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_iol.c:21:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_btcoex.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_beamforming.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_sreset.c:21:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_sreset.c:21:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_btcoex_wifionly.c:20:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_btcoex_wifionly.c:20:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_odm.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/efuse/rtw_efuse.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_beamforming.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_btcoex.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_beamforming.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_btcoex.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/osdep_service.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/os_intfs.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/rtw_odm.h:23,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_odm.c:21:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/rtw_odm.h:23,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/rtw_odm.c:21:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/efuse/rtw_efuse.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/core/efuse/rtw_efuse.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/usb_intf.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/osdep_service.c:24:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/osdep_service.c:24:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/os_intfs.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/os_intfs.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/usb_ops_linux.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_linux.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/usb_intf.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/usb_intf.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/usb_ops_linux.c:21:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/usb_ops_linux.c:21:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/xmit_linux.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/mlme_linux.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_linux.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_linux.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/recv_linux.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/xmit_linux.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/xmit_linux.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/mlme_linux.c:24:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/mlme_linux.c:24:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_cfg80211.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/recv_linux.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/recv_linux.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_cfgvendor.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/wifi_regd.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_cfg80211.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_cfg80211.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_cfgvendor.c:21:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_cfgvendor.c:21:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/wifi_regd.c:7:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/wifi_regd.c:7:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_cfg80211.c: In function ‘rtw_get_systime_us’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_cfg80211.c:339:2: error: implicit declaration of function ‘get_monotonic_boottime’; did you mean ‘getboottime’? [-Werror=implicit-function-declaration]
  get_monotonic_boottime(&ts);
  ^~~~~~~~~~~~~~~~~~~~~~
  getboottime
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_android.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_proc.o
  CC [M]  /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.o
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_android.c:25:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_android.c:25:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:291: /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_cfg80211.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_proc.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/rtw_proc.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:35,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:22:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/wifi.h:1019: warning: "IEEE80211_MAX_AMPDU_BUF" redefined
 #define IEEE80211_MAX_AMPDU_BUF 0x40
 
In file included from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service_linux.h:86,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/osdep_service.h:47,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/include/drv_types.h:32,
                 from /var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:22:
./include/linux/ieee80211.h:1442: note: this is the location of the previous definition
 #define IEEE80211_MAX_AMPDU_BUF  0x100
 
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_write_reg’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:51:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_read_reg’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:133:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_write_rf’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:265:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_read_rf’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:307:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_rate’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:415:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_channel’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:463:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_bandwidth’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:491:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_txpower_index’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:524:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_txpower’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:549:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_ant_tx’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:587:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_ant_rx’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:633:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_disable_bt_coexist’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:809:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8 input[wrqu->data.length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_arx’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:843:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_pwrtrk’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1022:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_psd’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1060:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_dump’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1173:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_phypara’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1199:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_SetRFPath’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1225:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_QueryDrv’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1264:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  char input[wrqu->data.length];
  ^~~~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_PwrCtlDM’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1293:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->length];
  ^~
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c: In function ‘rtw_mp_hwtx’:
/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build/os_dep/linux/ioctl_mp.c:1935:2: warning: ISO C90 forbids variable length array ‘input’ [-Wvla]
  u8  input[wrqu->data.length];
  ^~
make[1]: *** [Makefile:1563: _module_/var/lib/dkms/rtl8821cu/5.2.5.3_24795.20171031.r18.g0278eaa/build] Error 2
make[1]: Leaving directory '/usr/lib/modules/4.20.0-arch1-1-ARCH/build'
make: *** [Makefile:1923: modules] Error 2
@ivdok ivdok linked a pull request Jan 4, 2019 that will close this issue
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Fix 4.20 build error ivdok/rtl8821CU
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@AmyangXYZ