#alpha-unknown-linux-gnu
arm-unknown-linux-gnueabi
avr-unknown-linux-gnu
#cris-unknown-linux-gnu
frv-unknown-linux-gnu
#hppa-unknown-linux-gnu
hppa64-unknown-linux-gnu
#ia64-unknown-linux-gnu
m32r-unknown-linux-gnu
m68k-unknown-linux-gnu
mips-unknown-linux-gnu
powerpc-unknown-linux-gnu
s390-unknown-linux-gnu
#sh-unknown-linux-gnu
#sh64-unknown-linux-gnu
sparc-unknown-linux-gnu
sparc64-unknown-linux-gnu
v850-unknown-linux-gnu
x86_64-unknown-linux-gnu
xtensa-unknown-linux-gnu