Command Line Rebuild of VxWorks Kernel Source

Introduction

Quite often during development, you may need to rebuild a part of the VxWorks kernel for instance a driver or a part of the boot code, to add more debug or to make a change to the source code. Rather than making the change and waiting hours for the whole thing to recompile, the use of VSB_DIR will allow any source file to be recompiled easily.

Building for UP (Single Processor)

For example, to build a src file from a VxWorks development shell for a X86 target, modify the file and then cd into the directory. In this example, we are also adding debug to the image (for a gnu target).

cd C:/WindRiver/vxworks-6.9/target/src/boot   (or whatever)
make CPU=PENTIUM4 ADDED_CFLAGS+="-g -O0" TOOL=gnu VSB_DIR=<MY-VSB>

Then rebuild your VxWorks Image Project and you should have the updated kernel src.

For a diab build use -g -Xoptimized-debug-off

cd C:/WindRiver/vxworks-6.9/target/src/boot   (or whatever)
make CPU=PENTIUM4 ADDED_CFLAGS+="-g -Xoptimized-debug-off" TOOL=gnu VSB_DIR=<MY-VSB>

This works on VxWorks 6 and VxWorks 7, so long as you have built your own VxWorks Source Build (VSB).

Build for SMP (Symmetric Multi Processing)

There are two possible types of library in VxWorks : UP Single Processor and SMP Multi Processor. The above builds for UP, to build for SMP merely add VXBUILD=SMP

make CPU=PENTIUM4 ADDED_CFLAGS+="-g -O0" TOOL=gnu VSB_DIR=<MY-VSB> VXBUILD=SMP

Build a VSB layer in VxWorks 7

The above VSB_DIR command wont work if you are building a ui layer for example.
This will work instead:

cd C:/WindRiver/workspace/your_VSB_project
vxprj vsb build FBDEV

To list the layers:

vxprj vsb listAll