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Building Projects

About Building Projects

Building a project in the Nios II IDE compiles and links all the source code associated with the

project. Associated code can include other projects that your project depends on, such as a

Nios II system library project associated with a Nios II C/C++ application project or a Nios II

board support package (BSP) associated with a Nios II user-makefile C/C++ application

project. When building a project, Nios II IDE first builds all dependent projects

that the current

project references.

The build process runs a makefile in the background that produces the project output. Project

output depends on the project type:

Nios II C/C++ application projects create executable files (.elf) that you can run or

debug.

Nios II system library projects create pre-compiled libraries (.a).

Nios II C/C++ library projects create pre-compiled libraries (.a).

Nios II user-makefile C/C++ application projects output depends on your makefile.

When building a Nios II C/C++ application project, the Nios II IDE references the SOPC

Builder system file (.ptf) to create executable code that matches the target hardware. After

creating a project based on a specific SOPC Builder system, if the .ptf file changes (as a result

of modifications to the hardware design in SOPC Builder), the Nios II system library project

must be rebuilt. The build process detects an out-of-date .ptf file, and automatically rebuilds

the Nios II system library project.

If you want to re-target your project to a different SOPC Builder system, you need to create a

new Nios II system library project. Edits to your program source code might be necessary if,

for example, the peripherals are named differently in the new SOPC Builder system.

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AOpen MK86-L Guide de l'utilisateur Page 58