Index: include/renderdoc/renderdoc_app.h
--- include/renderdoc/renderdoc_app.h.orig
+++ include/renderdoc/renderdoc_app.h
@@ -35,7 +35,7 @@
 
 #if defined(WIN32) || defined(__WIN32__) || defined(_WIN32) || defined(_MSC_VER)
 #define RENDERDOC_CC __cdecl
-#elif defined(__linux__) || defined(__FreeBSD__)
+#elif defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__)
 #define RENDERDOC_CC
 #elif defined(__APPLE__)
 #define RENDERDOC_CC
