e96aeeb14d
Looks like it's not necessary, and, moreover, I'm getting this with recent ICU (64.2):
```
/usr/include/unicode/localpointer.h:67:1: error: template with C linkage
67 | template<typename T>
| ^~~~~~~~
/var/tmp/portage/dev-libs/vmime-9999/work/vmime-9999/src/vmime/charsetConverter_icu.cpp:37:1: note: ‘extern "C"’ linkage started here
37 | extern "C" {
| ^~~~~~~~~~
```
(there's also an issue about that, #218)
VMime is a powerful C++ class library for working with RFC-822 and MIME messages and Internet messaging services like IMAP, POP or SMTP. With VMime you can parse, generate and modify messages, and also connect to store and transport services to receive or send messages over the Internet. The library offers all the features to build a complete mail client. Key Features ------------ * it is free software! GNU GPL license (Commercial licenses available!) * fully RFC-compliant implementation * object-oriented and modular design * very easy-to-use (intuitive design) * well documented code * very high reliability * maximum portability Features Overview ----------------- * RFC-2822 and multipart messages * aggregate documents and embedded objects * 8-bit MIME and encoded word extensions * full support for attachments * POP3, IMAP, SMTP, maildir and sendmail * SSL/TLS security layer and X.509 certificates (using GNU TLS) * SASL authentication (using GNU SASL)