install kegel crosstool in debian

install bison
install flex
install libc6-dev

//error message
no acceptable cc found in $PATH
then,
install gcc

finally,
sh demo-i686.sh

經過了一天
看到了暌違已久的
Done!

下一步
來編輯for arm
./demo-arm9tdmi.sh

...
...
等好幾個小時

挖
成功嚕

+ echo testhello: C compiler can in fact build a trivial program.
testhello: C compiler can in fact build a trivial program.
+ test '' = 1
+ test '' = 1
+ test '' = 1
+ test 1 = ''
+ echo Done.
Done.