FTBFS after .NET Framework 4.6.2 upgrade on linux fedora with CS0518 "`System.Object' is not defined or imported"

[alefminus]

FTBFS after .NET Framework 4.6.2 upgrade on linux fedora with CS0518 "`System.Object' is not defined or imported"

[alefminus]

7.2.ftbfs.build.log

[alefminus]

This is the diff between the failed and successful builds (after replacing some spaces by end of lines to let the line oriented meld give better output):

The main difference is a missing mscorelib.dll in the failed build, and some changes from api-4.5 versions to 4.0.0.0 versions
success.txt
failed.txt

[ajelinski]

Hello @alefminus,

Thanks for reporting this issue.

We are able to reproduce the problem on Fedora 39. It isn't really related to the C# language version but it's due to the .NET Framework version upgrade.

Fedora's mono-complete package only contains libraries to build with .NET Framework versions 4.0, 4.5 and 4.7.1. This is why building Renode, which currently targets .NET Framework 4.6.2, fails.

We strongly recommend using a mono-complete package supplied directly by the Mono Project. This is the most complete package as it contains the Roslyn compiler, which is missing in the Fedora's package, and enables building software targeting any .NET Framework version. The first one is especially important because there are known issues with mcs, the legacy C# compiler, e.g., handling numbers with separators like 0x1_0000_0000.

The site doesn't contain any official instructions for Fedora but they supply RPM repositories targetting CentOS. We have verified one can add the repository, use it to install Mono and then build Renode successfully in a fresh Fedora 39 docker container with:

dnf install 'dnf-command(config-manager)'
dnf config-manager --add-repo https://download.mono-project.com/repo/centos8-stable.repo
yum install gcc git gtk-sharp2 mono-complete
git clone --recursive -j 10 https://github.com/renode/renode
cd renode
./build.sh

If there are any reasons you have to use Fedora's mono-complete package, it is possible to enforce .NET Framework version building Renode. If this is the case then we have verified it's possible to build Renode with it by enforcing the use of .NET Framework 4.7.1:

./build.sh --force-net-framework-version 4.7.1

[alefminus]

Thanks for the quick reply and detailed diagnosys. I can confirm it works.

…

On Fri, Feb 2, 2024 at 1:09 PM Adam Jeliński ***@***.***> wrote: Hello @alefminus <https://github.com/alefminus>, Thanks for reporting this issue. We are able to reproduce the problem on Fedora 39. It isn't really related to the C# language version but it's due to the .NET Framework version upgrade. Fedora's mono-complete package only contains libraries to build with .NET Framework versions 4.0, 4.5 and 4.7.1. This is why building Renode, which currently targets .NET Framework 4.6.2, fails. We strongly recommend using a mono-complete package supplied directly by the Mono Project <https://www.mono-project.com/download/stable>. This is the most complete package as it contains the Roslyn compiler, which is missing in the Fedora's package, and enables building software targeting any .NET Framework version. The first one is especially important because there are known issues with mcs, the legacy C# compiler, e.g., handling numbers with separators like 0x1_0000_0000. The site doesn't contain any official instructions for Fedora but they supply RPM repositories targetting CentOS. We have verified one can add the repository, use it to install Mono and then build Renode successfully in a fresh Fedora 39 docker container with: dnf install 'dnf-command(config-manager)' dnf config-manager --add-repo https://download.mono-project.com/repo/centos8-stable.repo yum install gcc git gtk-sharp2 mono-complete git clone --recursive -j 10 https://github.com/renode/renode cd renode ./build.sh If there are any reasons you have to use Fedora's mono-complete package, it is possible to enforce .NET Framework version building Renode. If this is the case then we have verified it's possible to build Renode with it by enforcing the use of .NET Framework 4.7.1: ./build.sh --force-net-framework-version 4.7.1 — Reply to this email directly, view it on GitHub <#584 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AYWFZPBUHWTR4IRPIB5VHWDYRTCQBAVCNFSM6AAAAABCS22EX6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTSMRTGU4DMOJSGY> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- Alon Levy Software Developer Greenvibe 054-2395317

[ajelinski]

Excellent, thanks for the confirmation.