libretro, build fix for ngc/wii/wiiu

cpu/sh2/compiler.c

@@ -468,7 +468,7 @@ static void rcache_free_tmp(int hr);
 #include "../drc/emit_mips.c"
 #elif defined(__riscv__) || defined(__riscv)
 #include "../drc/emit_riscv.c"
-#elif defined(__powerpc__) || defined(_M_PPC)
+#elif defined(__powerpc__) || defined(__ppc__) || defined(_M_PPC)
 #include "../drc/emit_ppc.c"
 #elif defined(__i386__) || defined(_M_X86)
 #include "../drc/emit_x86.c"
@@ -3014,7 +3014,8 @@ static void emit_do_static_regs(int is_write, int tmpr)
 // divide operation replacement functions, called by compiled code. Only the
 // 32:16 cases and the 64:32 cases described in the SH2 prog man are replaced.
 
-// This is surprisingly difficult since the SH2 division operation is generating// the result in the dividend during the operation, leaving some remainder-like
+// This is surprisingly difficult since the SH2 division operation is generating
+// the result in the dividend during the operation, leaving some remainder-like
 // stuff in the bits unused for the result, and leaving the T and Q status bits
 // in a state depending on the operands and the result. Q always reflects the
 // last result bit generated (i.e. bit 0 of the result). For T:

platform/libretro/libretro.c

@@ -16,9 +16,9 @@
 #include <string.h>
 #ifndef _WIN32
 #ifndef NO_MMAP
-#ifdef __SWITCH__
+#if defined __SWITCH__
 #include "switch/mman.h"
-#else
+#elif ! defined NO_MMAP
 #include <sys/mman.h>
 #endif
 #endif