cc1: error: -march=rv32i2p0_ma: unsupported ISA substring '2p0_ma'

[devobliquezer0]

Hi, I just set up a fresh environment with the compiler suggested in the README and I'm getting the following error log on a ./sim.py test run.

Build started at 2022-09-14T10:41:49.252463
Main binary: /usr/bin/python3
Build Options: -Dmultilib=false -Dpicocrt=false -Datomic-ungetc=false -Dthread-local-storage=false -Dio-long-long=true -Dformat-default=integer -Dincludedir=picolibc/riscv64-unknown-elf/include -Dlibdir=picolibc/riscv64-unknown-elf/lib '--cross-file cross.txt'
Python system: Linux
The Meson build system
Version: 0.62.2
Source dir: /litex/pythondata-software-picolibc/pythondata_software_picolibc/data
Build dir: /litex/linux-on-litex-vexriscv/build/sim/software/libc
Build type: cross build
Project name: picolibc
Project version: 1.7.8
Sanity testing C compiler: riscv64-unknown-elf-gcc
Is cross compiler: True.
Sanity check compiler command line: riscv64-unknown-elf-gcc sanitycheckc.c -o sanitycheckc_cross.exe -Os -march=rv32i2p0_ma -mabi=ilp32 -D__vexriscv__ -DUART_POLLING -g3 -fomit-frame-pointer -Wall -fno-builtin -fno-stack-protector -I/litex/pythondata-software-picolibc/pythondata_software_picolibc/data/newlib/libc/tinystdio -I/litex/pythondata-software-picolibc/pythondata_software_picolibc/data/newlib/libc/include -I/litex/litex/litex/soc/software/libbase -I/litex/litex/litex/soc/software/include -I/litex/litex/litex/soc/software -I/litex/linux-on-litex-vexriscv/build/sim/software/include -I/litex/linux-on-litex-vexriscv/build/sim/software/include/../libc -I/litex/litex/litex/soc/cores/cpu/vexriscv_smp -fexceptions -Wpragmas -D_FILE_OFFSET_BITS=64 -c
Sanity check compile stdout:

-----
Sanity check compile stderr:
cc1: error: -march=rv32i2p0_ma: unsupported ISA substring '2p0_ma'

-----

../../../../../pythondata-software-picolibc/pythondata_software_picolibc/data/meson.build:35:0: ERROR: Compiler riscv64-unknown-elf-gcc can not compile programs.

[Dolu1990]

Hi,

Which version of riscv64-unknown-elf-gcc do you have ? Maybe a old one ?

[280185386]

I got the same error , use this version : riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14/

[280185386]

@Dolu1990 Which version should I use ? Thank U

[280185386]

gmii_ethernet] loaded (0x5626987a4130) [xgmii_ethernet] loaded (0x5626987a4130) [serial2tcp] loaded (0x5626987a4130) [serial2console] loaded (0x5626987a4130) [clocker] loaded [ethernet] loaded (0x5626987a4130) [spdeeprom] loaded (addr = 0x0) [clocker] sys_clk: freq_hz=1000000, phase_deg=0

    __   _ __      _  __
   / /  (_) /____ | |/_/
  / /__/ / __/ -_)>  <
 /____/_/\__/\__/_/|_|

Build your hardware, easily!

(c) Copyright 2012-2022 Enjoy-Digital (c) Copyright 2007-2015 M-Labs

BIOS built on Oct 9 2022 03:58:42 BIOS CRC passed (6793857d)

LiteX git sha1: ac369977

--=============== SoC ==================-- CPU: VexRiscv @ 1MHz BUS: WISHBONE 32-bit @ 4GiB CSR: 32-bit data ROM: 128KiB SRAM: 8KiB

--============== Boot ==================-- Booting from serial... Press Q or ESC to abort boot completely. sL5DdSMmkekro Timeout No boot medium found

--============= Console ================--

litex> ls Command not found litex> cd / Command not found litex> exit Command not found litex> cd / Command not found litex>

how can I boot a linux kernel on it ？

[Dolu1990]

Hi,

I would say gcc-8.1.0 is kind of too old. For instance me, i'm on 11.1.0.

Booting linux

There is multiple ways, but over serial => https://github.com/litex-hub/linux-on-litex-vexriscv#load-the-linux-images-over-serial

[enjoy-digital]

We can probably close this, the version of GCC was too old and Picolibc requires a minimal version.