conflicting types for 'wchar_t'

1531 단어

/host/android-ndk-r7/mytoolchain/bin/../sysroot/usr/include/wchar.h:35: error: conflicting types for 'wchar_t'/host/android-ndk-r7/mytoolchain/bin/../lib/gcc/arm-linux-androideabi/4.4.3/include/stddef.h:323: note: previous declaration of 'wchar_t' was here

Android NDK Dev Guide(from NDK)


 
USING THE ANDROID TOOLCHAIN AS A STANDALONE COMPILER

 
5.2/ wchar_t support:
- - - - - - - - - - -

As documented, the Android platform did not really support wchar_t until
Android 2.3. What this means in practical terms is that:

  - If you target platform android-9 or higher, the size of wchar_t is
    4 bytes, and most wide-char functions are available in the C library
    (with the exception of multi-byte encoding/decoding functions and
     wsprintf/wsscanf).

  - If you target any prior API level, the size of wchar_t will be 1 byte
    and none of the wide-char functions will work anyway.

We recommend any developer to get rid of any dependencies on the wchar_t type
and switch to better representations. The support provided in Android is only
there to help you migrate existing code.

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