<pre>Makefile:975: "Cannot use CONFIG_STACK_VALIDATION=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel" CC [M] /home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/core/rtw_cmd.o In file included from <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service.h:41:0</b>, from <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/drv_types.h:32</b>, from <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/core/rtw_cmd.c:22</b>: <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service_linux.h:</b> In function โ<b>_init_timer</b>โ: <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service_linux.h:267:8:</b> <font color="#EF2929"><b>error: </b></font>โ<b>_timer {aka struct timer_list}</b>โ has no member named โ<b>data</b>โ ptimer<font color="#EF2929"><b>-></b></font>data = (unsigned long)cntx; <font color="#EF2929"><b>^~</b></font> <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service_linux.h:268:2:</b> <font color="#EF2929"><b>error: </b></font>implicit declaration of function โ<b>init_timer</b>โ; did you mean โ<b>_init_timer</b>โ? [<font color="#EF2929"><b>-Werror=implicit-function-declaration</b></font>] <font color="#EF2929"><b>init_timer</b></font>(ptimer); <font color="#EF2929"><b>^~~~~~~~~~</b></font> <font color="#4E9A06">_init_timer</font> In file included from <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/drv_types.h:32:0</b>, from <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/core/rtw_cmd.c:22</b>: <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service.h:</b> In function โ<b>thread_enter</b>โ: <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service.h:343:2:</b> <font color="#EF2929"><b>error: </b></font>implicit declaration of function โ<b>allow_signal</b>โ; did you mean โ<b>do_signal</b>โ? [<font color="#EF2929"><b>-Werror=implicit-function-declaration</b></font>] <font color="#EF2929"><b>allow_signal</b></font>(SIGTERM); <font color="#EF2929"><b>^~~~~~~~~~~~</b></font> <font color="#4E9A06">do_signal</font> <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service.h:</b> In function โ<b>flush_signals_thread</b>โ: <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service.h:353:6:</b> <font color="#EF2929"><b>error: </b></font>implicit declaration of function โ<b>signal_pending</b>โ; did you mean โ<b>timer_pending</b>โ? [<font color="#EF2929"><b>-Werror=implicit-function-declaration</b></font>] if (<font color="#EF2929"><b>signal_pending</b></font> (current)) <font color="#EF2929"><b>^~~~~~~~~~~~~~</b></font> <font color="#4E9A06">timer_pending</font> <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/osdep_service.h:355:3:</b> <font color="#EF2929"><b>error: </b></font>implicit declaration of function โ<b>flush_signals</b>โ; did you mean โ<b>do_signal</b>โ? [<font color="#EF2929"><b>-Werror=implicit-function-declaration</b></font>] <font color="#EF2929"><b>flush_signals</b></font>(current); <font color="#EF2929"><b>^~~~~~~~~~~~~</b></font> <font color="#4E9A06">do_signal</font> In file included from <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/drv_types.h:95:0</b>, from <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/core/rtw_cmd.c:22</b>: <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/hal_com.h:</b> At top level: <b>/home/maomao/document/drvers/driver/rtl8821AU_linux_v4.3.14_13455.20150212_BTCOEX20150128-51/include/hal_com.h:412:13:</b> <font color="#EF2929"><b>error: </b></font>โ<b>file_path</b>โ redeclared as different kind of symbol extern char <font color="#EF2929"><b>file_path</b></font>[PATH_LENGTH_MAX]; <font color="#EF2929"><b>^~~~~~~~~</b></font> </pre>