System building: manually

• Manually building a target system involves downloading, configuring, compiling and installing all the components of the system.

• All the libraries and dependencies must be configured, compiled and installed in the right order.

• Sometimes, the build system used by libraries or applications is not very cross-compile friendly, so some adaptations are necessary.

• There is no infrastructure to reproduce the build from scratch, which might cause problems if one component needs to be changed, if somebody else takes over the project, etc.