diff -urNp root/Makefile root-x86_64_abi/Makefile
--- root/Makefile	2007-06-22 20:05:12.000000000 +0000
+++ root-x86_64_abi/Makefile	2007-09-10 05:34:38.000000000 +0000
@@ -224,7 +224,11 @@ MODULES      += main   # must be last, $
 
 ##### ROOT libraries #####
 
+ifeq (,$(findstring x8664,$(ARCH)))
 LPATH         = lib
+else
+LPATH         = lib64
+endif
 
 ifneq ($(PLATFORM),win32)
 RPATH        := -L$(LPATH)