+nmh is known to compile on the following platforms (save the
+exceptions noted below), using an ANSI C compiler, such as gcc.
+
+AIX 4.1.5.0.01
+Cygwin (setup version 2.763, other versions may be fine)
+FreeBSD
+IRIX 6.5
+Linux 2.2 to current (glibc 2.1 to current)
+Mac OS X
+NetBSD 1.4.2
+OpenBSD
+Solaris 7 and 8 (sparc,x86)
+SunOS 4.1
+
+Known Compilation problems: