`riscv-rt`: Using this as a library?

[hyperswine]

Is it possible to use this as a "just works" library without extra copying/config or is it meant to be used as a template?

[Disasm]

https://github.com/riscv-rust/riscv-rust-quickstart (an example project for HiFive1 board) and other projects use this library without modifications. You may need to fork this library if you need support for a custom target which is not here yet or not yet supported by the stable Rust release.

[hyperswine]

Oh cool, this works withriscv64gc-unknown-none-elf right?

[hyperswine]

Getting this error:

error: linking with `rust-lld` failed: exit status: 1
  |
  = note: "rust-lld" "-flavor" "gnu" "/var/folders/w_/_7kxdnz529b9t9v2wy2jq1lc0000gn/T/rustcarHvTd/symbols.o" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/x-e8d7fbc0a1b159dc.2m5s5lr22y6ph1s7.rcgu.o" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/x-e8d7fbc0a1b159dc.2oek2cyra1n4zh8x.rcgu.o" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/x-e8d7fbc0a1b159dc.3evta6x8yg15nehd.rcgu.o" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/x-e8d7fbc0a1b159dc.4t4rpb5rx2cjojvv.rcgu.o" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/x-e8d7fbc0a1b159dc.u0cxapaxboc3jt3.rcgu.o" "--as-needed" "-L" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps" "-L" "/Volumes/Usable/Github/riscv-rust-quickstart/target/debug/deps" "-L" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/build/riscv-rt-261dd2fae3f16e7e/out" "-L" "/Users/jasonq/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/riscv64imac-unknown-none-elf/lib" "-Bstatic" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libr0-1a1ac5409ea05dbe.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv-ec7896b762bd1755.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libbare_metal-fbc186466253d1a6.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv-12406eb11d01252f.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libcritical_section-63a25403ffa66cec.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libbit_field-89f641f7382cb7d1.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libembedded_hal-97c85cf7b6e0feec.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libvoid-0da957ea58658e89.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libnb-89b124c07f3953d2.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libnb-76794dec96837829.rlib" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libpanic_halt-95f9e5b5875ed9a2.rlib" "/Users/jasonq/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/riscv64imac-unknown-none-elf/lib/librustc_std_workspace_core-0c15b3aa6ac6eb70.rlib" "/Users/jasonq/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/riscv64imac-unknown-none-elf/lib/libcore-d889182149692934.rlib" "/Users/jasonq/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/riscv64imac-unknown-none-elf/lib/libcompiler_builtins-40034286794b97d1.rlib" "-Bdynamic" "-znoexecstack" "-L" "/Users/jasonq/.rustup/toolchains/nightly-aarch64-apple-darwin/lib/rustlib/riscv64imac-unknown-none-elf/lib" "-o" "/Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/x-e8d7fbc0a1b159dc" "--gc-sections"
  = note: rust-lld: error: undefined symbol: _setup_interrupts
          >>> referenced by lib.rs:413 (src/lib.rs:413)
          >>>               riscv_rt-ca1035a70e9ebbaf.riscv_rt.22165755-cgu.3.rcgu.o:(_start_rust) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: __pre_init
          >>> referenced by lib.rs:413 (src/lib.rs:413)
          >>>               riscv_rt-ca1035a70e9ebbaf.riscv_rt.22165755-cgu.3.rcgu.o:(_start_rust) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: _sbss
          >>> referenced by lib.rs:413 (src/lib.rs:413)
          >>>               riscv_rt-ca1035a70e9ebbaf.riscv_rt.22165755-cgu.3.rcgu.o:(_start_rust) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: _ebss
          >>> referenced by lib.rs:413 (src/lib.rs:413)
          >>>               riscv_rt-ca1035a70e9ebbaf.riscv_rt.22165755-cgu.3.rcgu.o:(_start_rust) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: _sdata
          >>> referenced by lib.rs:422 (src/lib.rs:422)
          >>>               riscv_rt-ca1035a70e9ebbaf.riscv_rt.22165755-cgu.3.rcgu.o:(_start_rust) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: _sidata
          >>> referenced by lib.rs:422 (src/lib.rs:422)
          >>>               riscv_rt-ca1035a70e9ebbaf.riscv_rt.22165755-cgu.3.rcgu.o:(_start_rust) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: _max_hart_id
          >>> referenced by asm.S:58
          >>>               riscv-rt.o:(.init+0x64) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib
          >>> referenced by asm.S:58
          >>>               riscv-rt.o:(.init+0x68) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: _stack_start
          >>> referenced by asm.S:58
          >>>               riscv-rt.o:(.init+0x74) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

          rust-lld: error: undefined symbol: _hart_stack_size
          >>> referenced by asm.S:59
          >>>               riscv-rt.o:(.init+0x7C) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib
          >>> referenced by asm.S:59
          >>>               riscv-rt.o:(.init+0x80) in archive /Volumes/Usable/Github/riscv-rust-quickstart/target/riscv64imac-unknown-none-elf/debug/deps/libriscv_rt-ca1035a70e9ebbaf.rlib

error: could not compile `x` due to previous error

with a cargo.toml:

[target.riscv64imac-unknown-none-elf]
runner = "riscv64-unknown-elf-gdb -q -x gdb_init"

[build]
target = "riscv64imac-unknown-none-elf"

Sorry if Im missing something really obvious, but any ideas?

[romancardenas]

Are you passing linker arguments when compiling? The link.x file defines weak symbols for those symbols that appear missing on your traces.

[romancardenas]

I'm closing this issue as stale, as I believe the problem was that the linker arguments were not provided. Feel free to re-open it if you consider it necessary.