GHDL Interface can not detect GCC backend with newer GHDL/mcode, Microsoft Windows

[mbermal]

This seems similar to the following issues:
#898
#901

I got the same error running Windows 11 Enterprise and version 4.7.0 of vunit with GHDL 4.1.0.

AssertionError: No known GHDL back-end could be detected from running 'ghdl --version'

Output of ghdl --version is:

GHDL 4.1.0 (4.0.0.r39.g7188e92cf) [Dunoon edition]
 Compiled with GNAT Version: 13.2.0
 static elaboration, mcode JIT code generator
Written by Tristan Gingold.

Copyright (C) 2003 - 2024 Tristan Gingold.
GHDL is free software, covered by the GNU General Public License.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

I resolved it for myself using the suggestions from the previous issue. I changed the ghdl.py in the sim_if subdirectory to:

        mapping = {
            r"mcode JIT code generator": "mcode",
            r"llvm (\d+\.\d+\.\d+ )?code generator": "llvm",
            r"GCC (back-end|\d+\.\d+\.\d+) code generator": "gcc",
        }

For the actual release, you probably want something less brittle.

[LarsAsplund]

This was fixed in #1005 after the 4.7.0 release. Either install the development version of VUnit from GitHub or use the --pre option when installing from PyPi

[mbermal]

Dev version did work, but it had a different issue with my setup. Using my own solution for now and will wait for next release. Thank you.

[wa-itd]

I'm afraid I am having the same issue with VUnit 4.7.0, the latest version I can install with pip. ghdl --version provides the following:

GHDL 5.0.0-dev (4.1.0.r179.gb467eacba) [Dunoon edition]
 Compiled with GNAT Version: 14.2.0
 static elaboration, mcode JIT code generator
Written by Tristan Gingold.

Copyright (C) 2003 - 2024 Tristan Gingold.
GHDL is free software, covered by the GNU General Public License.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Very easy fix. Edit the mapping definition within determine_backend() within Lib/site-packages/vunit/sim_if/ghdl.py:

        mapping = {
            r"mcode( JIT)? code generator": "mcode",
            r"llvm (\d+\.\d+\.\d+ )?code generator": "llvm",
            r"GCC (back-end|\d+\.\d+\.\d+) code generator": "gcc",
        }

All working now.

[LarsAsplund]

@wa-itd To get the latest development version you need to do pip install with the --pre option.