ios - implicit declaration of function '_strnicmp' is invalid in C99 -


i'm new in ios

now counter problem 

#define strncasecmp _strnicmp

it has warning:

implicit declaration of function '_strnicmp' invalid in c99

and has error:

undefined symbols architecture armv7: "__strnicmp", referenced from:   _avi_open_input_file in avilib.o ld: symbol(s) not found architecture armv7 clang: error: linker command failed exit code 1 (use -v see invocation)

how solve problem?

quite simply, c runtime doesn't have function _strnicmp, microsoft-specific function, not standard c function.

you should remove #define , use function strncasecmp, since strncasecmp posix function, , ios posix-compliant.


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