Fix os_variant_has_internal_diagnostics link issue on Linux

Author: Kyle-Ye

Sources/OpenGraphCxx/DebugServer/interpose.c

@@ -2,24 +2,33 @@
 //  interpose.c
 //  OpenGraphCxx
 
+#include <OpenGraph/OGBase.h>
 #include "stdio.h"
 #include "stdbool.h"
 #include "string.h"
 
-#define DYLD_INTERPOSE(_replacement,_replacee) \
-   __attribute__((used)) static struct{ const void* replacement; const void* replacee; } _interpose_##_replacee \
-            __attribute__ ((section ("__DATA,__interpose"))) = { (const void*)(unsigned long)&_replacement, (const void*)(unsigned long)&_replacee };
-
+#if OG_TARGET_OS_DARWIN
 extern bool os_variant_has_internal_diagnostics(const char *subsystem);
+#endif
 
 bool og_variant_has_internal_diagnostics(const char *subsystem) {
     if (strcmp(subsystem, "org.OpenSwiftUIProject.OpenGraph") == 0) {
         return true;
     } else if (strcmp(subsystem, "com.apple.AttributeGraph") == 0) {
         return true;
     } else {
+        #if OG_TARGET_OS_DARWIN
         return os_variant_has_internal_diagnostics(subsystem);
+        #else
+        return false;
+        #endif
     }
 }
 
+#if OG_TARGET_OS_DARWIN
+#define DYLD_INTERPOSE(_replacement,_replacee) \
+   __attribute__((used)) static struct{ const void* replacement; const void* replacee; } _interpose_##_replacee \
+            __attribute__ ((section ("__DATA,__interpose"))) = { (const void*)(unsigned long)&_replacement, (const void*)(unsigned long)&_replacee };
+
 DYLD_INTERPOSE(og_variant_has_internal_diagnostics, os_variant_has_internal_diagnostics)
+#endif