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lowRISC / ibex

Ibex is a small 32 bit RISC-V CPU core, previously known as zero-riscy.
https://www.lowrisc.org
Apache License 2.0
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Installation Issue: FuseSoC build doesn't work #2153

Closed mattecurro closed 3 months ago

mattecurro commented 3 months ago

Ubuntu 22.04 Verilator version: 5.022 2024-02-24 rev v5.020-157-g2b4852048 gcc version: 12.3.0 g++ version: 12.3.0 clang version: 14.0.0

After the installation of all the prerequisites, I'm stuck. Idk how to solve this, why does it seems that I haven't a C++14 compiler?

Screenshot from 2024-03-25 10-32-09 ERROR: Failed to build lowrisc:ibex:ibex_simple_system:0 : '['make', '-j', '3']'

junambi commented 3 months ago

Please remove the "-std=c++11" from the CFLAGS in the examples/simple_system/ibex_simple_system.core file.

This will work. I was able to run the test.

rswarbrick commented 3 months ago

Oh I see! It looks like recent versions of Verilator have changed verilatedos.h so that it requires C++14. The relevant change was part of Verilator version 5.020, released at the start of this year.

I'm going to open a PR to bump this to -std=c++14. I don't think this will cause a tooling issue for anyone: looking through GCC releases, I think this has been supported since GCC 6.1, released in 2016.