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@@ -94,7 +94,10 @@ Unfortunately, not all systems on which crosstool-NG runs have all of those
libraries. And for those that do, the versions of those libraries may be
older than the version required by gcc (and binutils and gdb). To date,
Debian stable (aka Lenny) is lagging behind on some, and is missing the
-others.
+others. With >= gcc-4.8, we drop PPL and CLooG/PPL, and switch to ISL to
+replace PPL, and use the upstream version of CLooG instead of CLooG/PPL
+which was a fork of CLooG that provided PPL backend support, that was under-
+maintained. See: https://gcc.gnu.org/wiki/Graphite-4.8
This is why crosstool-NG builds its own set of libraries as part of the
toolchain.