adding static assert for CLAP 1.2.0 due to CLAP_PARAM_IS_ENUM at an a…

…ppropriate place

src/detail/vst3/parameter.cpp

@@ -3,6 +3,15 @@
 #include <pluginterfaces/vst/ivstmidicontrollers.h>
 #include <pluginterfaces/vst/ivstunits.h>
 
+#if CLAP_VERSION_LT(1,2,0)
+static_assert(false, "the CLAP-as-VST3 wrapper requires at least CLAP 1.2.0");  
+/*
+*   CLAP_PARAM_IS_ENUM is available with CLAP 1.2.0
+*
+*   This is only a requirement to compile the wrapper properly, it will still wrap CLAPs compiled with earlier versions of CLAP.
+*/
+#endif
+
 using namespace Steinberg;
 
 Vst3Parameter::Vst3Parameter(const Steinberg::Vst::ParameterInfo& vst3info,