Use __GNUC__ to handle GCC specific code

core/emitter/x86_op_encoder.h

@@ -60,7 +60,7 @@
 
 #include "build.h"
 
-#if BUILD_COMPILER == COMPILER_GCC
+#ifdef __GNUC__
 	#define __fastcall BALLZZ!!
 #endif
 

core/hw/arm7/arm7.cpp

@@ -650,7 +650,7 @@ void armv_prof(OpType opt,u32 op,u32 flg);
 extern "C" void arm_dispatch();
 extern "C" void arm_exit();
 extern "C" void DYNACALL
-#if BUILD_COMPILER == COMPILER_GCC
+#ifdef __GNUC__
 	// Avoid inlining / duplicating / whatever
 	__attribute__ ((optimize(0)))
 #endif
@@ -690,7 +690,7 @@ u32 DYNACALL DoMemOp(u32 addr,u32 data)
 }
 
 //findfirstset -- used in LDM/STM handling
-#if HOST_CPU==CPU_X86 && BUILD_COMPILER != COMPILER_GCC
+#if HOST_CPU==CPU_X86 && !defined(__GNUC__)
 #include <intrin.h>
 
 u32 findfirstset(u32 v)

core/oslib/oslib.h

@@ -15,7 +15,7 @@ void WriteSample(s16 right, s16 left);
 
 u32 static INLINE bitscanrev(u32 v)
 {
-#if (BUILD_COMPILER==COMPILER_GCC)
+#ifdef __GNUC__
 	return 31-__builtin_clz(v);
 #else
 	unsigned long rv;

core/rec-x86/rec_x86_ngen.h

@@ -14,7 +14,7 @@
 
 void ngen_opcode(RuntimeBlockInfo* block, shil_opcode* op,x86_block* x86e, bool staging, bool optimise);
 
-#if BUILD_COMPILER == COMPILER_GCC
+#ifdef __GNUC__
 extern "C" 
 {
 #endif	
@@ -29,7 +29,7 @@ void ngen_mainloop(void* cntx);
 void DYNACALL ngen_blockcheckfail(u32 addr);
 void DYNACALL ngen_blockcheckfail2(u32 addr);
 
-#if BUILD_COMPILER == COMPILER_GCC
+#ifdef __GNUC__
 }
 #endif