Patch from Dario Alcocer <alcocer@connectnet.com>. His comments:

Haven't had a chance to do an extensive shake-out of 980710, but it
  builds just fine on FreeBSD 2.2.5 (after termios is fixed using the
  attached patch), and the tests run fine.  FYI: FreeBSD doesn't support
  System V IPC out of the box, but one only needs to add three options
  to the kernel build configuration file, recompile the kernel, and
  you're ready.

c/src/exec/libcsupport/src/termios.c

@@ -36,6 +36,8 @@
 #define TABDLY  0
 #define OLCUC   0
 #define ILCUC   0
+#define OCRNL   0
+#define IUCLC   0
 #endif
 
 /*

c/src/lib/libc/termios.c

@@ -36,6 +36,8 @@
 #define TABDLY  0
 #define OLCUC   0
 #define ILCUC   0
+#define OCRNL   0
+#define IUCLC   0
 #endif
 
 /*