engine: server: support MAP_ANON synonym for MAP_ANONYMOUS, disable allocating string pool near server library for OSX

engine/server/sv_game.c

@@ -3092,12 +3092,10 @@ void SV_SetStringArrayMode( qboolean dynamic )
 #endif
 }
 
-#ifdef XASH_64BIT
-#if !XASH_WIN32
+#if XASH_64BIT && !XASH_WIN32 && !XASH_APPLE
 #define USE_MMAP
 #include <sys/mman.h>
 #endif
-#endif
 
 /*
 ==================
@@ -3128,14 +3126,21 @@ void SV_AllocStringPool( void )
 
 #ifdef USE_MMAP
 	{
+		uint flags;
 		size_t pagesize = sysconf( _SC_PAGESIZE );
 		int arrlen = (str64.maxstringarray * 2) & ~(pagesize - 1);
 		void *base = svgame.dllFuncs.pfnGameInit;
 		void *start = svgame.hInstance - arrlen;
 
+#if defined(MAP_ANON)
+		flags = MAP_ANON | MAP_PRIVATE;
+#elif defined(MAP_ANONYMOUS)
+		flags = MAP_ANONYMOUS | MAP_PRIVATE;
+#endif
+
 		while( start - base > INT_MIN )
 		{
-			void *mapptr = mmap((void*)((unsigned long)start & ~(pagesize - 1)), arrlen, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0 );
+			void *mapptr = mmap((void*)((unsigned long)start & ~(pagesize - 1)), arrlen, PROT_READ | PROT_WRITE, flags, 0, 0 );
 			if( mapptr && mapptr != (void*)-1 && mapptr - base > INT_MIN && mapptr - base < INT_MAX )
 			{
 				ptr = mapptr;
@@ -3150,7 +3155,7 @@ void SV_AllocStringPool( void )
 			start = base;
 			while( start - base < INT_MAX )
 			{
-				void *mapptr = mmap((void*)((unsigned long)start & ~(pagesize - 1)), arrlen, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0 );
+				void *mapptr = mmap((void*)((unsigned long)start & ~(pagesize - 1)), arrlen, PROT_READ | PROT_WRITE, flags, 0, 0 );
 				if( mapptr && mapptr != (void*)-1  && mapptr - base > INT_MIN && mapptr - base < INT_MAX )
 				{
 					ptr = mapptr;