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How is the target variable generated in Buildroot?
Generate all the targets listed in the TARGETS variable. This variable is filled by all the individual components’ Makefiles. Generating these targets will trigger the compilation of the userspace packages (libraries, programs), the kernel, the bootloader and the generation of the root filesystem images, depending on the configuration.
How are new packages integrated into Buildroot software?
This section covers how new packages (userspace libraries or applications) can be integrated into Buildroot. It also shows how existing packages are integrated, which is needed for fixing issues or tuning their configuration.
What happens when an external toolchain is used in Buildroot?
When an external toolchain is used, this means checking the features of the external toolchain and importing it into the Buildroot environment. Generate all the targets listed in the TARGETS variable.
Do you need to install Linux utilities in Buildroot?
While Buildroot itself will build most host packages it needs for the compilation, certain standard Linux utilities are expected to be already installed on the host system. Below you will find an overview of the mandatory and optional packages (note that package names may vary between distributions).
What should the custom version be in Buildroot?
For example, set BR2_LINUX_KERNEL_CUSTOM_VERSION=y and BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE to the kernel version you tested with. It is recommended to use as much as possible upstream versions of the Linux kernel and bootloaders, and to use as much as possible default kernel and bootloader configurations.
What are the backends of the Buildroot toolchain?
Buildroot provides two solutions for the cross-compilation toolchain: The internal toolchain backend, called Buildroot toolchain in the configuration interface. The external toolchain backend, called External toolchain in the configuration interface.
Can you add support for other boards to Buildroot?
You are welcome to add support for other boards to Buildroot too. To do so, you need to create a normal Buildroot configuration that builds a basic system for the hardware: (internal) toolchain, kernel, bootloader, filesystem and a simple BusyBox-only userspace.