-# FIXME - "-Wl,-segaddr,SBCLRO,0x1000000" is output from
+# KLUDGE: in OS X 10.3, Apple started putting the heap right where we
+# expect our read-only space mapped. This hack causes the linker to
+# place a zero-fill-on-demand segment in the same place and size as
+# read-only-space, which is the only thing capable of keeping malloc
+# out of this range."
+#
+# FIXME: "-Wl,-segaddr,SBCLRO,0x1000000" is output from