Rust Bare Bones: Difference between revisions
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Include instructions on how to build a minimal rust ELF binary. |
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An example might be as follows (for an x86_64 platform):
<source lang="c">
{
"llvm-target": "x86_64-unknown-none",
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First, you must prepare your source. In general, rust tries to avoid command line flags in favour of in-source changes. As such, there is not Cargo or Rust flag to disable the standard library and add a custom panic handler. The below source takes care of that:
<source lang="c">
#![no_std]
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Another thing to keep in mind is that Rust uses stack unwinding by default, however, this is dependent on an underlying OS, which we obviously don't have (hey, you're here for a reason). To disable stack unwinding and just abort on panic (after the panic handler is called, of course), modify your Cargo.toml:
<source lang="c">
[profile.dev]
panic = "abort"
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