Add RISC-V toolchain package

[maxgerhardt]

PIO only has the SiFive variant but we want https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases to be same as the the MounRiverStudio at least.

Toolchain can still be upgraded from that.

Currently uses Windows-only packaging of toolchain fromr MounRiverStudio.

[maxgerhardt]

The packages have been submitted to the PIO Registry for review under the community-ch32v organization and are waiting for approval.

[maxgerhardt]

A temporary work-around has been implemented in ce56da0

[microcai]

any update on this?

how to use latest toolchain? c++23 is needed.

[maxgerhardt]

Attempted in ab4dafc, 83666d5 and 9b032a1.

The update to GCC12 was a massive failure. The Windows toolchain works fine. The Linux toolchain misses the libprintf.a file that the OpenWCH Arduino core requires and thus fails building. The Mac toolchain fails catastrophically and can't even compile core_riscv.c.

I've disabled the usage of GCC12 again in c4d8867 after the failed upgrade attempt. I've emailed support about these issues already and am awaiting another toolchain update, in, maybe a month, optimistically. This needs to work properly on all OSes, not only Windows. Until then, it's not done.

[maxgerhardt]

Hello, thank you for using and providing feedback. We will launch a new Linux community version and macOS, Linux toolchain package after the Spring Festival.

MounRiver Studio

Okay, that sounds.. soon?

[microcai]

does that means, if i use nonos-sdk, then gcc-12 is fine?

[microcai]

Attempted in ab4dafc, 83666d5 and 9b032a1.

The update to GCC12 was a massive failure. The Windows toolchain works fine. The Linux toolchain misses the libprintf.a file that the OpenWCH Arduino core requires and thus fails building. The Mac toolchain fails catastrophically and can't even compile core_riscv.c.

I've disabled the usage of GCC12 again in c4d8867 after the failed upgrade attempt. I've emailed support about these issues already and am awaiting another toolchain update, in, maybe a month, optimistically. This needs to work properly on all OSes, not only Windows. Until then, it's not done.

riscv-windows privode riscv-none-embed while risc-linux-bin provide riscv-none-elf.

[microcai]

copy toolchain-riscv-windows/riscv-none-embed/lib/rv32imacxw/ilp32/libprintf.a to toolchain-riscv/riscv-none-elf/lib/rv32imac_xw/ilp32/ and build success.

[maxgerhardt]

I'll let MounRiver sort this one out so that we can do a clean update.

[vihor3]

我会让 MounRiver 解决这个问题，以便我们可以进行干净的更新。

Currently, Linux and macos toolchains have been updated. I successfully compiled the firmware and ran it under macos using the toolchain of cmake and mousriver studio

[microcai]

I'll let MounRiver sort this one out so that we can do a clean update.

mainly because platform-build.py problem, force to add -lprintf flag。 and the result binary is way bigger than usual.