PowerPC 64-bits little-endian is supported by Ubuntu, Red Hat and Debian, which means we should eventually support the ppc64el architecture.

Linux powerpc targets with official Ubuntu binutils etc. support:

Linux arch  QEMU target     LLVM target  Ubuntu binutils                 Example Rust triple
----------  --------------  -----------  ------------------------------  -------------------

powerpc     ppc-softmmu     PowerPC      binutils-powerpc-linux-gnu      powerpc-unknown-linux-gnu
powerpc     ppc64-softmmu   PowerPC      binutils-powerpc64le-linux-gnu  powerpc64-unknown-linux-gnu

PR: #154.
PR: #156.
linuxppc (Rust support): linuxppc/issues#451.
Tracking Issue: rust-lang/rust#158199.
Rust MCP: (new powerpc{,64,64le}-unknown-none targets): rust-lang/compiler-team#988.
Rust MCP (folded into the above one): rust-lang/compiler-team#986.
Rust MCP (folded into the above one): rust-lang/compiler-team#987.
Lore: https://lore.kernel.org/rust-for-linux/[email protected]/.
Lore: https://lore.kernel.org/rust-for-linux/[email protected]/.