Книга: Embedded Linux Primer: A Practical, Real-World Approach

11.2.1. Cross-Compiling BusyBox

11.2.1. Cross-Compiling BusyBox

As mentioned at the beginning of the chapter, the authors of BusyBox intended the package to be used in a cross-development environment, so building BusyBox in such an environment is quite easy. In most cases, the only requirement is to specify the prefix to the cross-compiler on your development workstation. This is specified in Build Options in the BusyBox configuration utility by selecting the option to build BusyBox with a cross-compiler. You then are presented with an option to enter the cross-compiler prefix. The prefix you enter depends on your cross-development environment. Some examples include xscale_be- or ppc-linux-. We cover this in more detail in the next chapter when we examine the embedded development environment.

The final option in Listing 11-1 is for any extra flags you might want to include on the compiler command line. These might include options for generating debug information (-g), options for setting the optimization level (-O2, for example), and other compiler options that might be unique to your particular installation and target system.

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