Indicate Linux only support for libfuzzer-sys.

frewsxcv · nagisa · commit 2a418ed2b2fe · 2017-02-19T00:59:30.000+02:00
diff --git a/README.md b/README.md
@@ -2,6 +2,8 @@ Barebones wrapper around libFuzzer runtime library.
 
 The CPP parts are extracted from llvm git repository with `git filter-branch`.
 
+libFuzzer relies on LLVM sanitizer support. The Rust compiler has built-in support for LLVM sanitizer support, for now, it's limited to Linux. As a result, libfuzzer-sys only works on Linux.
+
 # How to use
 
 “Manual” usage of this library looks like this:
