CODEWITHSUNDEEP
c++
Sudhakar
Sudhakar

Reputation: 93

How to resolve warning: multi-character character constant in Linux C++

#ifdef WIN32
#   define TARGET_OS 'W_NT'

I am getting C++ warning in Linux multi-character character constant. at the below line. How to resolve this warning.

#if TARGET_OS == 'W_CE'

Upvotes: 0

Views: 5697

Answers (2)

Michael Krelin - hacker
Michael Krelin - hacker

Reputation: 143249

String constants use double quotes, single quotes are for character constants.

To suppress the warning if this is what you mean you can use -Wno-multichar gcc option.

Upvotes: 3

Basile Starynkevitch
Basile Starynkevitch

Reputation: 1

Don't define preprocessor constants as strings or chars when testing them in #if. Perhaps coding 

#if TARGET_OS_IS_WIN_NT
   /* do something for Windows NT */
#endif

#if TARGET_OS_IS_LINUX
   /* do something for Linux */
#endif

Better yet, consider using multi-system libraries like e.g. Qt -they did all the boring job of handling system specific things and provide you with a nice common API.

Upvotes: 1

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