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Altera_Forum's avatar
Altera_Forum
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14 years ago

Problem creating a new project with existing source code.

Hello i am using NIOS2 SBT 11.0sp1 and i am trying make a new project with existing source code.

When i select new project & bsp from template choosing hello world everything compiles and work.

When i select new project & bsp from template choosing blank project and then adding my header files (properties -> application properties-> application libraries and inclues) and my source code (properties -> c/c++ builder path -> c/c++ source code)

i get an undefined reference to main error pointing to the alt_main file in the bsp/hal/src folder

Any suggestions?

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Please refer to Nios II Developer's Handbook, page 6-37 and following,

    namely the section named "Boot Sequence and Entry Point".

    alt_main() is the standard entry point for a raw Nios application, while main() is the entry point for a HAL based application. In the latter, an alt_main function is automatically generated which provides system initialization and calls your application main().

    If you don't use any template, you must define the entry point function:

    void alt_main(void)
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Cris72 thanks for the help.

    However i still get the same error. My .c file is the generated by the "hello world" template. Is really just a printf with hello world.

    I tried to change the main to alt_main but the error persists.
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    Ok now it works... even setting the path i have to click on the file and select "ADD TO NIOS2 BUILD".

    Isnt there an easier way? I have to do this to every path? Adding the library AND setting it as a nios2 build library.. seriously?