[SOLVED] sendkeys help {manual error, corrrected}

rob@RobsCNC:~/Downloads$ sudo halcompile --install sendkeys.c 
[sudo] password for rob: 
Compiling realtime sendkeys.c
sendkeys.c: In function ‘main’:
sendkeys.c:202:5: warning: implicit declaration of function ‘signal’; did you mean ‘strsignal’? [-Wimplicit-function-declaration]
     signal(SIGINT, exit_handler);
     ^~~~~~
     strsignal
sendkeys.c:202:12: error: ‘SIGINT’ undeclared (first use in this function); did you mean ‘SW_CNT’?
     signal(SIGINT, exit_handler);
            ^~~~~~
            SW_CNT
sendkeys.c:202:12: note: each undeclared identifier is reported only once for each function it appears in
sendkeys.c:203:12: error: ‘SIGTERM’ undeclared (first use in this function)
     signal(SIGTERM, exit_handler);
            ^~~~~~~
make: *** [/usr/share/linuxcnc/Makefile.modinc:116: sendkeys.o] Error 1
rob@RobsCNC:~/Downloads$ 

#include </usr/include/linuxcnc/rtapi.h>
#include </usr/include/linuxcnc/hal.h>
#include <linux/uinput.h>
#include </usr/include/linux/unistd.h>
#include </usr/include/linux/fcntl.h>
#include </usr/include/stdio.h>
#include </usr/include/c++/8/stdlib.h>
#include </usr/include/linux/string.h>

rob@RobsCNC:~/Downloads$ sudo halcompile --install sendkeys.c 
Compiling realtime sendkeys.c
sendkeys.c: In function ‘emit’:
sendkeys.c:65:4: warning: implicit declaration of function ‘write’; did you mean ‘fwrite’? [-Wimplicit-function-declaration]
    write(fd, &ie, sizeof(ie));
    ^~~~~
    fwrite
sendkeys.c: In function ‘main’:
sendkeys.c:202:5: warning: implicit declaration of function ‘signal’; did you mean ‘strsignal’? [-Wimplicit-function-declaration]
     signal(SIGINT, exit_handler);
     ^~~~~~
     strsignal
sendkeys.c:202:12: error: ‘SIGINT’ undeclared (first use in this function); did you mean ‘SW_CNT’?
     signal(SIGINT, exit_handler);
            ^~~~~~
            SW_CNT
sendkeys.c:202:12: note: each undeclared identifier is reported only once for each function it appears in
sendkeys.c:203:12: error: ‘SIGTERM’ undeclared (first use in this function)
     signal(SIGTERM, exit_handler);
            ^~~~~~~
sendkeys.c:225:29: warning: implicit declaration of function ‘open’; did you mean ‘popen’? [-Wimplicit-function-declaration]
                 param->fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
                             ^~~~
                             popen
make: *** [/usr/share/linuxcnc/Makefile.modinc:116: sendkeys.o] Error 1
rob@RobsCNC:~/Downloads$ 

rob@RobsCNC:/usr/lib/linuxcnc/modules$ ls s*
sample_hold.so   serport.so            sim_parport.so      steptest.so
sampler.so       setsserial.so         simple_tp.so        streamer.so
scale.so         siggen.so             sim_spindle.so      sum2.so
scarakins.so     sim_axis_hardware.so  sphereprobe.so      supply.so
scope_rt.so      sim_encoder.so        spindle_monitor.so
scorbot-kins.so  sim_home_switch.so    spindle.so
select8.so       sim_matrix_kb.so      stepgen.so
rob@RobsCNC:/usr/lib/linuxcnc/modules$ 

rob@RobsCNC:/usr/lib/linuxcnc/modules$ ls s*
sample_hold.so   serport.so            sim_parport.so      steptest.so
sampler.so       setsserial.so         simple_tp.so        streamer.so
scale.so         siggen.so             sim_spindle.so      sum2.so
scarakins.so     sim_axis_hardware.so  sphereprobe.so      supply.so
scope_rt.so      sim_encoder.so        spindle_monitor.so
scorbot-kins.so  sim_home_switch.so    spindle.so
select8.so       sim_matrix_kb.so      stepgen.so
rob@RobsCNC:/usr/lib/linuxcnc/modules$ 

rob@RobsCNC:/usr/lib/linuxcnc/modules$ ls t*.*
thc.so      threadtest.so  time.so         tripodkins.so      trivkins.so
thcud.so    timedelay.so   toggle2nist.so  tristate_bit.so
threads.so  timedelta.so   toggle.so       tristate_float.so
rob@RobsCNC:/usr/lib/linuxcnc/modules$ 

rob@RobsCNC:~/Downloads$ dpkg -c linuxcnc-uspace_2.9.0~pre0.3688.ge6aec2fd2_amd64.deb | grep sendkeys
-rwxr-xr-x root/root     14592 2021-03-20 07:44 ./usr/bin/sendkeys
-rw-r--r-- root/root      2313 2021-03-20 07:44 ./usr/share/man/man1/sendkeys.1.gz

rob@RobsCNC:/$ sudo find -name 'sendkey*.**'
./home/rob/Downloads/sendkeys.c
./usr/share/man/man1/sendkeys.1.gz
rob@RobsCNC:/$