This repo contains a build of the Pro54 synth, generated using the command:

cmaj generate --target=clap Pro54/Pro54.cmajorpatch --output=source --clapIncludePath=3rdParty/clap/include --clapWrapperPath=3rdParty/clap-wrapper

To build, cd to the source directory and use cmake to build the targets for your host using your generator of choice.