Interesting that I have same Ubuntu version but I can compile without this fix. Wine 1.8.5.

without it I get:
[ 81%] Generating ../RemoteVstPlugin
/usr/bin/ld: skipping incompatible /usr/lib/x86_64-linux-gnu/wine/libwine.so when searching for -lwine
/usr/bin/ld: cannot find -lwine
collect2: error: ld returned 1 exit status
winegcc: g++ failed
plugins/vst_base/CMakeFiles/vstbase.dir/build.make:61: recipe for target 'plugins/RemoteVstPlugin' failed
make[2]: *** [plugins/RemoteVstPlugin] Error 2
CMakeFiles/Makefile2:7587: recipe for target 'plugins/vst_base/CMakeFiles/vstbase.dir/all' failed
make[1]: *** [plugins/vst_base/CMakeFiles/vstbase.dir/all] Error 2
Makefile:149: recipe for target 'all' failed
make: *** [all] Error 2

So it's finding the 64-bit instead of 32-bit. Is this a bug with pkgconfig perhaps?

@gnudles I run into same issue some time ago. Please see #3142 if that helps.

karmux: you gave me the wrong thread

@gnudles I edited it few seconds later.

Do you have libc6-dev-i386 gcc-multilib g++-multilib installed?

Well, I saw the thread you posted.
I already had all the multilibs installed.
I had wine64-tools so I moved to wine32-tools as karmux suggested, and when I installed wine32-tools, it removed wine64-tools (the packages conflicts)...
and the compilation passed OK with wine32-tools.
This thing is not so intuitive.
Anyway, I've just noticed that the proposed fixed doesn't really works because RemoteVstPlugin.exe.so is not builded.

I'm going to close this pull request. It's probably an issue with packages on your system. I never had problems with compiling LMMS with VST support on ubuntu, it's always been a matter of copy pasting the commands from our wiki tutorial.

Anyways, feel free to keep us posted if you resolve the issue,

Superseded by #3593, which has now been merged to stable-1.2. This will eventually need to make it to master with our next synchronization effort.