Backport https://github.com/flyinghead/flycast/commit/1cc3490f51ed3876b76e0a6f863ddb217ff88fab

core/build.h

@@ -132,12 +132,6 @@
 #define DC_PLATFORM_AURORA      6   /* Needs to be done, Uses newer 300 mhz sh4 + 150 mhz pvr mbx SoC */
 
 
-//HOST_OS
-#define OS_WINDOWS   0x10000001
-#define OS_LINUX     0x10000002
-#define OS_DARWIN    0x10000003
-#define OS_HORIZON   0x10000004
-
 //HOST_CPU
 #define CPU_X86      0x20000001
 #define CPU_ARM      0x20000002
@@ -207,7 +201,6 @@
 #ifndef HOST_CPU
 #define HOST_CPU CPU_ARM64
 #endif
-#define HOST_OS OS_HORIZON
 #endif
 
 #if defined(TARGET_NAOMI)

core/hw/sh4/dyna/blockmanager.cpp

@@ -14,7 +14,7 @@
 #include "hw/sh4/sh4_sched.h"
 
 
-#if HOST_OS==OS_LINUX && defined(DYNA_OPROF)
+#if defined(__unix__) && defined(DYNA_OPROF)
 #include <opagent.h>
 op_agent_t          oprofHandle;
 #endif