alt_irq_init Again!

In my computer,there are three versions:11.0, 9.0 and 8.0. I have used them together for a month, and no problem.

Until two days ago, I compiled my program, error occured!

**** Build of configuration Debug for project hello_world_0 ****

make -s all includes

Compiling hello_world.c...

Linking hello_world_0.elf...

/cygdrive/e/JIDA/9.10next_stage/IN_FIR300why/hello_world_0_syslib/Debug/libhello_world_0_syslib.a(alt_main.o)(.text+0x14): In function `alt_main':

/cygdrive/c/altera/90/nios2eds/components/altera_hal/HAL/src/alt_main.c:102: undefined reference to `alt_irq_init'

collect2: ld returned 1 exit status

make: *** [hello_world_0.elf] Error 1

Build completed in 3.109 seconds

I try many solutions: restarting my computer, deleting the .a file and build again, uninstall 8.0IDE. These three solutions do not work !

Additional, in another computer, only has 9.0 version. It can compile my program successfully! I want to know why ? What happened to my computer, and how to solve it?