Wine32 VST Bridge plugins missing gui (Ubuntu Studio 20.04)

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Were any 32-bit libraries missing before you tried building? Meaning, did you have to install any further 32-bit libraries?

No there was nothing missing. Distro 20.04 has installed all :i386 libs needed for the wine32- and wine64-bridges. Also I've set the "dpkg --add-architecture i386" befor and installed the "build-essential".

I installed the Bridges with:

apt-get install carla-bridge-wine32 carla-bridge-wine64

Weeks ago I had installed a "Ubuntu Studio 20.04 beta" and did not have these problems. Maybe that helps.

Know I solved this problems with recompiling the carla-bridge-wine32 and carla-bridge-wine64 by
installing the carla build dependencies with:

apt-get build-dep carla

Then I removed all distro packages from wine-development* (5.5)
and installed version 5.7~focal form WineHQ:

wine-devel
wine-devel-dev
wine-devel-amd64
wine-devel-i386:i386

and compiled without any error:

make win32 CC=i686-w64-mingw32-gcc CXX=i686-w64-mingw32-g++
make win64 CC=x86_64-w64-mingw32-gcc CXX=x86_64-w64-mingw32-g++

make wine32 && make wine64

Did you have the Harrison AVA-legacy-EQ (Win VST3/32)? There you can see the analyser is missing in the top. The Knobs are visible in the lower part of the plugin. (OpenGL overlay?) The older Version of Limiter No.6 (Win VST2/32) shows only a black screen. (Not the known BUG with Limiter No.6. I have the working Version)

Aamazingly, carla now also works from distro 20.04 including the both 32/64 wine-bridge together with the new packages from "WineHQ Wine-Devel 5.7~focal" installed.

It looks like the "wine-development" packages have changed since beta?!?

The way things are packaged in Ubuntu is that the compilation is done 100% from this site that we're on; nothing is compiled locally. A source package is made locally and uploaded to Launchpad for compilation with the instructions to the build system on how to build it. So, having Harrison AVA-legacy-EQ is not something we can possibly have.

Not sure about wine-development, but Carla changed since the beta to the final release from RC2. I have the developer in the loop on this bug.

I was noticing also that the wine32 bridges aren't being built for 64-bit architectures, which would totally be my fault. I'll look into this.

While attempting to debug this, I did indeed run into this issue using the version of wine available in 20.04 and 20.10 (Groovy Gorilla):

/usr/bin/ld: relocatable linking with relocations from format elf64-x86-64 (/usr/lib/x86_64-linux-gnu/wine-development/libwinecrt0.a(dll_entry.o)) to format elf32-i386 (jackbridge-wine32.WO6FJy.o) is not supported

I believe this is a bug in wine that needs to get corrected, or else this will remain a problem in Focal.

Turns out I was wrong as far as building, but the problem remains: there is no GUI for the wine bridge under Focal. Not an issue with how Carla is packaged, so the issue lies squarely on wine.

I also thought it was wine, but I wasn't sure.

Thank you Erich for taking the time.

The Groovy Gorilla has reached end of life, so this bug will not be fixed for that release