system.h is not locatable even after compiling the project

[Altera_Forum]

hi,  

 i am using Nios-II version 9.0. i have created a new project using a .ptf file. it has no additional files other than a simple hello_world.c    i have included the system.h file and plan to use the peripheral specific macros for developing the drivers.   when i build the project, it successfully compiles and creates an .elf   but when i try to indivudally build the hello_world.c file it throws an error saying "no such file or directory"   any idea to how to resolve this?

[Altera_Forum]

How do you manually compile your .c file?

[Altera_Forum]

hi, 

 for every .c file there is a option to build that file. i am using that option.  also when i build the complete project i get error of not being able to open following header files:  "system.h"  "altera_avalon_pio_regs.h" "alt_types.h"

[Altera_Forum]

I never tried this option before, and it doesn't work on my system either. There is a warning saying it's experimental though ;) 

Just build the full project, it will only recompile modified files anyway. For the .h files, it is sometimes a real pain to find them in the IDE. You often need to find them by hand from the project explorer on your left. For system.h, go in your project's syslib, Debug, system_description For the altera component include files, go in altera.components, IP Device Drivers, sopc_builder_ip, your_component_name, inc Other general include files, such as alt_types.h, are in altera.components, IP Device Drivers, nios2_ip, altera_nios2, HAL. inc