Re: [PATCH] Fix build warning: Implicit declaration nxsem_post()

[Gregory Nutt]

Recently this warning started showing up in builds:

icmp/icmp_netpoll.c: In function 'icmp_poll_eventhandler':
icmp/icmp_netpoll.c:129:11: warning: implicit declaration of function
'nxsem_post'; did you mean 'sem_post'?
[-Wimplicit-function-declaration]
            nxsem_post(info->fds->sem);
            ^~~~~~~~~~
            sem_post

Same problem in dirvers/modem/altair/altmdm_sys.c -- but worse. More 
undedefined nxsem_* functions and the build with that driver also fails 
with "undefined reference to nxsem_timedwait_uninterruptible'

LOTs of code breakage with the last PRs!  We need a proper workflow to 
prevent this from happening!