Warning Solaris and macOS X

SRC/INSTALL

@@ -1,5 +1,6 @@
-echoping appears to compile and run at least on Linux, FreeBSD and
-Tru64. You do not have to be root to install it.
+echoping appears to compile and run at least on Linux, FreeBSD,
+Solaris (gcc only) and Tru64. On Mac OS X, you'll probably need a
+version >= 10.2. You do not have to be root to install it.
 
 Just type "./configure", then "make", "make test" if you wish (some
 tests depend on local servers and/or Internet access, interpret with
@@ -20,7 +21,8 @@ may not be available on your platform).
 
 There is no option to disable IPv6. echoping now uses the new (RFC
 2133) socket interface, with getnameinfo/getaddrinfo. If your system
-does not support it, you jave no other choices than using echoping 4.
+does not support it (Mac OS X), you jave no other choices than using
+echoping 4.
 
 Standard "autoconf/configure" options are supported such as --prefix
 to set the installation root directory.