* FreeBSD 10.x and above (i386 and amd64)
* Linux 2.6.x and above with glibc or musl (i386, x86_64, and ARM)
-* Mac OS X 10.7 and above
+* macOS 10.7 and above
* Windows Vista/Server 2008 and above (x86 or x64)
## Tier 2
These are known issues and workarounds for supported platforms.
+ * **macOS**: you must set the `LIBTOOLIZE` environment variable to point to glibtoolize before running autogen.sh:
+
+ ```bash
+ brew install libtool
+ export LIBTOOLIZE="/usr/local/bin/glibtoolize"
+ ./autogen.sh
+ ```
+
* **FreeBSD**: if you are compiling with ipv6 you may experience
problems with ipv4 due to the way the socket code is written. To
fix this you must: "sysctl net.inet6.ip6.v6only=0"