Index: tools/rockboxdev.sh
===================================================================
--- tools/rockboxdev.sh	(revision 17767)
+++ tools/rockboxdev.sh	(working copy)
@@ -4,11 +4,18 @@
 # downloaded files
 dlwhere="/tmp/rbdev-dl"
 
-# will append the target string to the prefix dir mentioned here
+# This is the prefix for cross compilers used to build rockbox.
+# We will append the target string to the prefix dir mentioned here.
+# The default prefix is used if the custom prefix is not set or is empty.
 # Note that the user running this script must be able to do make install in
 # this given prefix directory. Also make sure that this given root dir
 # exists.
-prefix="/usr/local"
+if [ -f ~/.config/rockbox.org/RockboxCompilerPrefix ]; then
+  read prefix < ~/.config/rockbox.org/RockboxCompilerPrefix
+fi
+if [ -z "$prefix" ]; then
+  prefix="/usr/local"
+fi
 
 # This directory is used to extract all files and to build everything in. It
 # must not exist before this script is invoked (as a security measure).
Index: tools/configure
===================================================================
--- tools/configure	(revision 17767)
+++ tools/configure	(working copy)
@@ -36,11 +36,24 @@
  OC=${prefix}objcopy
 }
 
+setpath () {
+ # This is the prefix for cross compilers used to build rockbox.
+ # It won't be set if the custom prefix is not set or is empty.
+ if [ -f ~/.config/rockbox.org/RockboxCompilerPrefix ]; then
+   read path_prefix < ~/.config/rockbox.org/RockboxCompilerPrefix
+ fi
+ if [ -n "$path_prefix" ]; then
+   path_append=":$path_prefix/$1/bin"
+   PATH="$PATH$path_append"
+ fi
+}
+
 crosswincc () {
  # naive approach to selecting a mingw cross-compiler on linux/*nix
  echo "Enabling win32 crosscompiling"
 
  prefixtools i586-mingw32msvc-
+ setpath i586-mingw32msvc
 
  # add cross-compiler option(s)
  GCCOPTS="$GCCOPTS `sdl-config --cflags`"
@@ -208,6 +221,7 @@
 #
 shcc () {
  prefixtools sh-elf-
+ setpath sh-elf
  GCCOPTS="$CCOPTS -m1"
  GCCOPTIMIZE="-fomit-frame-pointer -fschedule-insns"
  endian="big"
@@ -216,6 +230,7 @@
 
 calmrisccc () {
  prefixtools calmrisc16-unknown-elf-
+ setpath calmrisc16-unknown-elf
  GCCOPTS="-Wl\,--no-check-sections $CCOPTS"
  GCCOPTIMIZE="-fomit-frame-pointer"
  endian="big"
@@ -223,6 +238,7 @@
 
 coldfirecc () {
  prefixtools m68k-elf-
+ setpath m68k-elf
  GCCOPTS="$CCOPTS -m5206e -Wa\,-m5249 -malign-int -mstrict-align"
  GCCOPTIMIZE="-fomit-frame-pointer"
  endian="big"
@@ -231,6 +247,7 @@
 
 arm7tdmicc () {
  prefixtools arm-elf-
+ setpath arm-elf
  GCCOPTS="$CCOPTS -mcpu=arm7tdmi"
  if test "X$1" != "Xshort"; then
    GCCOPTS="$GCCOPTS -mlong-calls"
@@ -242,6 +259,7 @@
 
 arm9tdmicc () {
  prefixtools arm-elf-
+ setpath arm-elf
  GCCOPTS="$CCOPTS -mcpu=arm9tdmi -mlong-calls"
  GCCOPTIMIZE="-fomit-frame-pointer"
  endian="little"
@@ -250,6 +268,7 @@
 
 arm946cc () {
  prefixtools arm-elf-
+ setpath arm-elf
  GCCOPTS="$CCOPTS -mcpu=arm9e -mlong-calls"
  GCCOPTIMIZE="-fomit-frame-pointer"
  endian="little"
@@ -258,6 +277,7 @@
 
 arm926ejscc () {
  prefixtools arm-elf-
+ setpath arm-elf
  GCCOPTS="$CCOPTS -mcpu=arm926ej-s -mlong-calls"
  GCCOPTIMIZE="-fomit-frame-pointer"
  endian="little"
@@ -266,6 +286,7 @@
 
 arm1136jfscc () {
  prefixtools arm-elf-
+ setpath arm-elf
  GCCOPTS="$CCOPTS -mcpu=arm1136jf-s -mlong-calls"
  GCCOPTIMIZE="-fomit-frame-pointer"
  endian="little"
@@ -2063,6 +2084,7 @@
 fi
 
 sed > Makefile \
+ -e "s,@PATH_APPEND@,${path_append},g" \
  -e "s,@ROOTDIR@,${rootdir},g" \
  -e "s,@DEBUG@,${debug},g" \
  -e "s,@MEMORY@,${memory},g" \
@@ -2124,6 +2146,9 @@
 <<EOF
 ## Automatically generated. http://www.rockbox.org/
 
+# this will set the correct path automatically
+PATH:=\${PATH}@PATH_APPEND@
+
 ifndef V
 SILENT=@
 else