Don't define radare_plugin when built into libr via XPS

src/r2/core_hbc_one.c

@@ -3,16 +3,23 @@
 /* Core HBC plugin with plugin registration enabled for r2one */
 
 #define HBC_CORE_REGISTER_PLUGINS 1
+// radare2 defines R2_PLUGIN_INCORE when linking us statically (XPS)
+#ifdef R2_PLUGIN_INCORE
+#define HBC_STATIC_INCORE 1
+#else
 #define R2_PLUGIN_INCORE 1
+#endif
 #include "asm_hbc.c"
 #include "bin_hbc.c"
 #include "arch_hbc.c"
 #undef HBC_VADDR_BASE
 #include "core_hbc.c"
 
+#ifndef HBC_STATIC_INCORE
 R_API RLibStruct radare_plugin = {
 	.type = R_LIB_TYPE_CORE,
 	.data = (void *)&r_core_plugin_r2hermes,
 	.version = R2_VERSION,
 	.abiversion = R2_ABIVERSION
 };
+#endif