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From b8e4f29db4b46614e7f21515ba439eab3c0698b1 Mon Sep 17 00:00:00 2001
From: Brahmajit Das <brahmajit.xyz@gmail.com>
Date: Tue, 13 Jun 2023 10:43:46 +0000
Subject: [PATCH 2/2] cec.c: Including select.h and time.h
According to POSIX.1-2001 sys/select.h should be included for usage of
identifier fd_set
For using structure timeval sys/time.h is needed.
Without the aforementioned includes, I'm getting the following error:
cec.c:311:3: warning: switch condition has boolean value [-Wswitch-bool]
switch (sh == tab) {
^ ~~~~~~~~~
cec.c:515:2: error: use of undeclared identifier 'fd_set'
fd_set rfds;
^
cec.c:521:23: error: variable has incomplete type 'struct timeval'
struct timeval *tvp, timout;
^
cec.c:521:9: note: forward declaration of 'struct timeval'
struct timeval *tvp, timout;
^
cec.c:527:3: error: call to undeclared function 'FD_ZERO'; ISO C99 and later do not
support implicit function declarations [-Wimplicit-function-declaration]
FD_ZERO(&rfds);
^
cec.c:527:12: error: use of undeclared identifier 'rfds'; did you mean 'ffs'?
FD_ZERO(&rfds);
^~~~
ffs
/usr/include/strings.h:25:5: note: 'ffs' declared here
int ffs (int);
^
cec.c:528:3: error: call to undeclared function 'FD_SET'; ISO C99 and later do not
support implicit function declarations [-Wimplicit-function-declaration]
FD_SET(fd, &rfds);
^
cec.c:528:15: error: use of undeclared identifier 'rfds'; did you mean 'ffs'?
FD_SET(fd, &rfds);
^~~~
ffs
/usr/include/strings.h:25:5: note: 'ffs' declared here
int ffs (int);
^
cec.c:530:15: error: use of undeclared identifier 'rfds'; did you mean 'ffs'?
FD_SET(0, &rfds);
^~~~
ffs
/usr/include/strings.h:25:5: note: 'ffs' declared here
int ffs (int);
^
cec.c:533:7: error: incomplete definition of type 'struct timeval'
tvp->tv_sec = 1;
~~~^
cec.c:521:9: note: forward declaration of 'struct timeval'
struct timeval *tvp, timout;
^
cec.c:534:7: error: incomplete definition of type 'struct timeval'
tvp->tv_usec = 0;
~~~^
cec.c:521:9: note: forward declaration of 'struct timeval'
struct timeval *tvp, timout;
^
cec.c:537:7: error: call to undeclared function 'select'; ISO C99 and later do not
support implicit function declarations [-Wimplicit-function-declaration]
n = select(fd+1, &rfds, nil, nil, tvp);
^
cec.c:537:21: error: use of undeclared identifier 'rfds'; did you mean 'ffs'?
n = select(fd+1, &rfds, nil, nil, tvp);
^~~~
ffs
/usr/include/strings.h:25:5: note: 'ffs' declared here
int ffs (int);
^
cec.c:550:7: error: call to undeclared function 'FD_ISSET'; ISO C99 and later do not
support implicit function declarations [-Wimplicit-function-declaration]
if (FD_ISSET(0, &rfds)) {
^
cec.c:550:20: error: use of undeclared identifier 'rfds'; did you mean 'ffs'?
if (FD_ISSET(0, &rfds)) {
^~~~
ffs
/usr/include/strings.h:25:5: note: 'ffs' declared here
int ffs (int);
^
cec.c:576:28: error: use of undeclared identifier 'rfds'; did you mean 'ffs'?
} else if (FD_ISSET(fd, &rfds)) {
^~~~
ffs
/usr/include/strings.h:25:5: note: 'ffs' declared here
Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>
--- a/cec.c
+++ b/cec.c
@@ -9,6 +9,8 @@
#include <string.h>
#include <signal.h>
#include <sys/errno.h>
+#include <sys/select.h>
+#include <sys/time.h>
#include <arpa/inet.h>
#include <ctype.h>
#include "cec.h"
--
2.41.0
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