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fprintf(stderr, "%s\n", opus_get_version_string());
//Error[Pe020]: identifier "stderr" is undefined
As per above code I got an two Errors :
1)
"Error[Pe020]: identifier "FILE" is undefined"
when I found stdlib.h then there are no any kind of "FILE" directive define or typedef.
So,please tell me which changes needed in stdlib.h or stdio.h
2)
Error[Pe020]: identifier "stderr" is undefined
So,In which header file stderr define ?
Please tell me How to solve above errors ?
Thanks in advance.
First,
FILE
is in
stdio.h
not in
stdlib.h
. Second, the default library does not include
FILE
support since this feature uses a lot of space and is seldom needed in embedded systems. To use
FILE
you must switch to full libraries in the configuration dialog (if you use the IDE) or by using the command line switch
--dlib full
(if you use the compiler from the command line).
Note that the full library is much larger than the normal library so if the only use of
FILE
is to print diagnostic messages to
stderr
I suggest that you use some other way of presenting the messages.
FILE is defined in
stdio.h
standard header file. As
Johan
mentioned the default library configuration in IAR IDE does not include full Dlib support.
We can change to Full Dlib support under project options.
Project options shall be opened with
ALT + F7
Hotkey or
project tab and then options
. Check this Image.
Project Options
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