Issue linking attiny202

[DeepHorizons]

When trying to target a new device in the hal, the ATTiny202, I get a compiler error about the linker. I tried changing the MCU type to avrxmega3 but that caused different errors. Here is the log:

error: linking with `avr-gcc` failed: exit status: 1                                                                                                          
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  = note: LC_ALL="C" PATH="/home/josh/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/bin:/home/josh/.cargo/bin:/home
/josh/.local/bin:/home/josh/.cargo/bin:/home/josh/.local/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/home/josh/.local/share/flatpak/exports/bin:/var/lib/flat
pak/exports/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl" VSLANG="1033" "avr-gcc" "-mmcu=attiny202" "/tmp/rustcPUIP
Nu/symbols.o" "/home/josh/deleteme/rust-embeded-test-attint402/target/avr-attiny202/debug/deps/rust_embeded_test_attint402-0821c1a01a28d416.panic_halt-9fb55b3
64d5215ff.panic_halt.3b8ea78f5b1f46a7-cgu.0.rcgu.o.rcgu.o" "-Wl,--as-needed" "-L" "/home/josh/deleteme/rust-embeded-test-attint402/target/avr-attiny202/debug/
deps" "-L" "/home/josh/deleteme/rust-embeded-test-attint402/target/debug/deps" "-L" "/home/josh/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustli
b/avr-attiny202/lib" "-Wl,-Bstatic" "/home/josh/deleteme/rust-embeded-test-attint402/target/avr-attiny202/debug/deps/libcompiler_builtins-ed5dabdc4bb102ce.rli
b" "-Wl,-Bdynamic" "-lgcc" "-Wl,-z,noexecstack" "-L" "/home/josh/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/avr-attiny202/lib" "-o" "/hom
e/josh/deleteme/rust-embeded-test-attint402/target/avr-attiny202/debug/deps/rust_embeded_test_attint402-0821c1a01a28d416.elf" "-Wl,--gc-sections" "-no-pie"   
  = note: /usr/bin/avr-ld: cannot find crtattiny202.o: No such file or directory                                                                   
          /usr/bin/avr-ld: cannot find -lattiny202: No such file or directory                                                                                 
          collect2: error: ld returned 1 exit status

There is no crtattiny202.o in my /usr/avr/lib/avrxmega3 folder, just a libc.a file. I do have a crtattiny202.o in an arduino folder on my PC, in /var/lib/flatpak/app/cc.arduino.arduinoide/x86_64/stable/96e4cef0c12962b6a56b7cd414456d730684a75e90f3f2a2416d36db1c2fde26/files/Arduino/hardware/tools/avr/avr/lib/avrxmega3/short-calls/crtattiny202.o, I do not have the same in my avrxmega3 folder.

[DeepHorizons]

This ended up being an issue with avr-libc as it has support but not in a released version yet. There is also an issue with linking that can be worked around using nightly-2022-10-20. The linking issue should be solved in rust-lang/rust#106619