diff -r 08da017ba46b -r 7f9bbf94b0bb config/cc/gcc.in
--- a/config/cc/gcc.in	Thu Apr 17 21:04:23 2008 +0000
+++ b/config/cc/gcc.in	Wed Apr 30 10:43:41 2008 +0000
@@ -128,3 +128,19 @@
     default ""
     help
       Extra flags to pass onto ./configure when configuring gcc.
+
+menuconfig CC_GCC_GMP_MPFR
+    bool
+    prompt "GMP and MPFR"
+    help
+      Recent gcc needs both GMP and MPFR to build some frontends.
+
+      Say 'Y' here if you want to build those two libraries specifically
+      for crosstool-NG.
+
+      Saying 'Y' is highly recommended if building gcc-4.3 or higher.
+
+if CC_GCC_GMP_MPFR
+source config/cc/gmp.in
+source config/cc/mpfr.in
+endif