NOOB question on build error

[Altera_Forum]

Hi. 

I am currently working with Nios II dev kit with cyclone on Nios II IDE v1.0. I have been trying to work with telnet example. For some reason, the project will not build, and here are the error messages:   "Launch failed. Launch aborted - project (or dependency) failed to build. See  C-Build console for details"   and C-Build console says:   ***[obj/alt_alarm_start.o] Error1  ***[system_project] Error 2  Please somebody help me out.. I am new to Nios II boards and completely lost.

[Altera_Forum]

hm.. 

i figured its due to path settings..  here is an error msg:  make -s all  Compiling alt_alarm_start.c... /cygdrive/c/altera/kits/nios2/components/altera_hal/HAL/src/alt_alarm_start.c:46:19: errno.h: No such file or directory In file included from /cygdrive/c/altera/kits/nios2/components/altera_hal/HAL/src/alt_alarm_start.c:49: /cygdrive/c/altera/kits/nios2/components/altera_nios2/HAL/inc/sys/alt_irq.h:39:19: errno.h: No such file or directory /cygdrive/c/altera/kits/nios2/components/altera_hal/HAL/src/alt_alarm_start.c: In function `alt_alarm_start': /cygdrive/c/altera/kits/nios2/components/altera_hal/HAL/src/alt_alarm_start.c:101: error: `EINVAL' undeclared (first use in this function) /cygdrive/c/altera/kits/nios2/components/altera_hal/HAL/src/alt_alarm_start.c:101: error: (Each undeclared identifier is reported only once /cygdrive/c/altera/kits/nios2/components/altera_hal/HAL/src/alt_alarm_start.c:101: error: for each function it appears in.) /cygdrive/c/altera/kits/nios2/components/altera_hal/HAL/src/alt_alarm_start.c:106: error: `ENOTSUP' undeclared (first use in this function) make: *** [obj/alt_alarm_start.o] Error 1 Build completed  can anyone help me now?