--- ghc-6.12.2/configure.ac	2010-04-20 20:10:05.000000000 +0200
+++ ghc-6.12.2-magellan/configure.ac	2010-05-05 19:49:17.000000000 +0200
@@ -217,6 +217,9 @@
                 echo "Bootstrapping GHC is a cross compiler. This probably isn't going to work"
         fi
 fi
+build=`echo "$build" | sed -e 's/linux-gnu/linux/' -e 's/-pc-/-unknown-/'`
+[build=`echo "$build" | sed -e 's/i[4-6]86/i386/'`] # escaping square bracket
+echo "debug build=$build"
 
 # We have to run these unconditionally, but we may discard their
 # results in the following code
@@ -250,6 +253,9 @@
     GHC_CONVERT_VENDOR([$build_vendor], [BuildVendor])
     GHC_CONVERT_OS([$build_os], [BuildOS])
 fi
+host=`echo "$host" | sed -e 's/linux-gnu/linux/' -e 's/-pc-/-unknown-/'`
+[host=`echo "$host" | sed -e 's/i[4-6]86/i386/'`] # escaping square bracket
+echo "debug: host=$host"
 
 if test "$host_alias" = ""
 then
@@ -270,6 +276,9 @@
     GHC_CONVERT_VENDOR([$host_vendor], [HostVendor])
     GHC_CONVERT_OS([$host_os], [HostOS])
 fi
+target=`echo "$target" | sed -e 's/linux-gnu/linux/' -e 's/-pc-/-unknown-/'`
+[target=`echo "$target" | sed -e 's/i[4-6]86/i386/'`] # escaping square bracket
+echo "debug target=$target"
 
 if test "$target_alias" = ""
 then
@@ -332,7 +341,7 @@
 
 checkVendor() {
     case $1 in
-    dec|unknown|hp|apple|next|sun|sgi|ibm)
+    dec|unknown|hp|apple|next|sun|sgi|ibm|pc)
         ;;
     *)
         echo "Unknown vendor $1"