I download rockbox source with svn and go with this guide
http://www.rockbox.org/twiki/bin/view/Main/LinuxSimpleGuideToCompilingbyku:~/rockbox/build$ echo $PATH
/bin:/usr/bin:/sbin:/usr/sbin:/opt/java/jre/bin:/usr/bin/perlbin/site:/usr/bin/perlbin/vendor:/usr/bin/perlbin/core:/usr/lib/swiftweasel:/usr/local/arm-elf/bin:/usr/local/m68k-elf/bin:/usr/local/sh-elf/bin:/home/byku/bin:/usr/local/m68k-elf/bin:/usr/local/m68k-elf/bin:/usr/local/m68k-elf/bin:/usr/local/arm-elf/bin
byku:~/rockbox/build$
but when I type make I have problems:
Using source code root directory: /home/byku/rockbox
../tools/configure: line 2200: arm-elf-gcc: command not found
../tools/configure: line 2204: arm-elf-ld: command not found
WARNING: The compiler you must use (arm-elf-gcc) is not in your path!
WARNING: this may cause your build to fail since we cannot do the
WARNING: checks we want now.
Using arm-elf-ld
Created Makefile
byku:~/rockbox/build$ make
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
Generating dependencies
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
/bin/sh: arm-elf-gcc: command not found
CC tools/rdf2binary
CC tools/convbdf
CC tools/codepages
CC bmp2rb
BMP2RB iaudio_bl_flash.c
CC tools/scramble
CC uclpack
CC tools/mktccboot
CC tools/mkboot
PP features.txt
/bin/sh: arm-elf-gcc: command not found
CC lang.c
make: arm-elf-gcc: Command not found
make: *** [/home/byku/rockbox/build/lang.o] Error 127
byku:~/rockbox/build$