BuildingRTEMS

The primary source of information about building and configuring RTEMS is always the Getting Started manual for the RTEMS version you are using (see ​http://www.rtems.com/onlinedocs.html. This section contains answers to some frequently asked questions.

Required Tools

• Which tools are required to build RTEMS?
• Do I need autoconf and automake to build RTEMS?
• Do I need a native gcc on my host?
• Can I use a non-gcc cross-toolchain?
• Where to get autoconf automake ld gcc etc.?
• Building the Tool RPM packages?

Issues when building RTEMS

• When running ./configure weird thing start to happen
• When running bootstrap weird thing start to happen
• configure xxx cannot create executables
• Why can I not build RTEMS inside of the source tree?
• Which environment variables to set?
• Compiler /Assembler /Linker report errors
• How to set up $PATH?
• Can I build RTEMS Canadian Cross?
• Building RTEMS is slow
• Building my pre-4.5.x BSPs does not work anymore

Get rest from build45.t in FAQ and continue.

Issue relating to Debuging and Building

• Does building with `make VARIANT=DEBUG' cause RTEMS_DEBUG to get defined?

No.

• How do I cause RTEMS_DEBUG to get defined

In newer snapshots it's --enable-rtems-debug. In older versions you had to define it inside the target-opts section in your BSP's <BSP>.cfg.

• What exactly does VARIANT=debug do?

Builds with less optimisation

• What does RTEMS_DEBUG do?

Enables debug checks inside the RTEMS kernel, including memory heap walking.