ICU for Mavericks

Modern ICU for Mac OS X 10.9 Mavericks.

Programs built for newer macOS often need these updated Unicode text functions to handle word breaks, list and number formatting, collation, etc.

How to use

Given source code:

cc -I/usr/local/mavergreen/icu/include \
   myprogram.c /usr/local/mavergreen/icu/lib/libicucore.dylib

Given a binary, relink it with drydock-macho-rewrite:

dylib  replace  /usr/lib/libicucore.A.dylib  /usr/local/mavergreen/icu/lib/libicucore.dylib

Exported names are Apple's unversioned ones (ubrk_open, not ubrk_open_78), covering all of ICU's C functions. The headers also declare ICU's C++ API, but only its C functions are exported, so C++ code must stick to the C API.

Sometimes a program linked with this library will also end up loading Apple's /usr/lib/libicucore.A.dylib via a system framework such as CoreFoundation. This is fine. Each caller uses the library it was linked with.