MIDI Monitor.plugin doesn't seems to work when compiling from sources

[krevis]

MIDI Monitor.plugin doesn't seems to work when compiling from sources

[krevis]

Not sure. Send me your built driver and I can take a look.

As a guess: when you press "play" in Xcode, it will build for only one architecture (probably 64-bit), not both 32- and 64-bit.

You could confirm that by using the "file" command in Terminal. "file MIDI\ Monitor.plugin/Contents/MacOS/MIDI\ Monitor" should tell you what architectures are in the binary.

If you have any older 32-bit-only MIDI drivers installed, the MIDIServer will run in 32-bit mode and it won't load any 64-bit-only drivers. You can solve this by making Xcode build both architectures, by doing an "Archive" build instead, or by editing your current scheme and changing the Run action's build configuration from "Debug" to "Release". Or, just uninstall your old 32-bit drivers.

[samuel-tranchet]

That was it ! I figured it out while you were answering.
After having posted my question I tested the Release compiled driver, and it worked. This one was bigger than debug one, it wasn't logical, so I checked the options for the 2 configurations. The main difference was "Build active architecture only". Setting it to false in debug allowed me to compile and debug the driver correctly.

Thanks a lot for the precisions you brought to me. I didn't know about running modes of MIDIServer.