![]() I have built a BSP using buildroot and now have a target/ directory that contains nearly everything that will wind up on my root file system image (but note a few caveats) for this target. Additional environment variables can be set with -E. The -L option lets us specify the path for the ELF interpreter prefix and we can utilize this to point the emulator to a reasonable set of libraries (for example a target file system sitting on my x86 laptop). qemu user mode takes a number of arguments that can be used to supply these. There is also a user mode which lets us run a cross-compiled executable right on our host machine and that can be used for various isolated testing tasks (for instance, running unit tests in the target system architecture).Ī useful program does need some libraries however and it may need an environment. We can use qemu-system-arm to start a simulated ARM-based machine, boot Linux, and then run whatever software is appropriate. ![]() ![]() The qemu CPU emulator is typically used to emulate an entire system, for example
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