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?