diff --git a/sysdeps/m68k/Implies b/sysdeps/m68k/Implies
new file mode 100644
index 0000000000..a67e1c2741
--- /dev/null
+++ b/sysdeps/m68k/Implies
@@ -0,0 +1,2 @@
+# 68k uses IEEE 754 floating point.
+ieee754
diff --git a/sysdeps/unix/bsd/tahoe/Implies b/sysdeps/unix/bsd/tahoe/Implies
new file mode 100644
index 0000000000..a7ecf58273
--- /dev/null
+++ b/sysdeps/unix/bsd/tahoe/Implies
@@ -0,0 +1 @@
+unix/bsd/vax