The _ICONV_MODE environmental variable selects the behavior mode
for the iconv_open(), iconv(), and iconv_close() family of functions.
The _ICONV_MODE value can be set to:
- C
- Users have created their own iconv() converter(s). Search for
user created converters first. If the user-created converter is not
located, try using Unicode Conversion Services to perform the conversion.
Note: _ICONV_UCS2 and _ICONV_PREFIX environment variables will
be honored while searching for user-created converters, but they will
not be honored while using Unicode Convesion Services.
- U
- Use Unicode Conversion Services to perform all conversions not
listed in the Table 2. This is the default value for
_ICONV_MODE. The values of the _ICONV_UCS2 and _ICONV_PREFIX will
not be honored.