Index: doc/arch/amd64
===================================================================
--- doc/arch/amd64	(revision 8b3eebbb09010358cfc788bbaa6c70640d3306b7)
+++ doc/arch/amd64	(revision ddcf365696799cc8ff00f5ce2cce529e5b6742ab)
@@ -28,2 +28,7 @@
         o Simics 2.2.19
 	o QEMU 0.8.0
+
+TOOLCHAIN REQUIREMENTS
+	o binutils 2.16, 2.16.1
+	o gcc 4.0.1, gcc 4.1.0
+	o older versions may do as well, but are now obsoleted