Add PowerPC support

cmake/LibraryNaming.cmake

@@ -28,6 +28,7 @@ check_symbol_exists(XASH_LINUX "build.h" XASH_LINUX)
 check_symbol_exists(XASH_LITTLE_ENDIAN "build.h" XASH_LITTLE_ENDIAN)
 check_symbol_exists(XASH_MINGW "build.h" XASH_MINGW)
 check_symbol_exists(XASH_MIPS "build.h" XASH_MIPS)
+check_symbol_exists(XASH_PPC "build.h" XASH_PPC)
 check_symbol_exists(XASH_MOBILE_PLATFORM "build.h" XASH_MOBILE_PLATFORM)
 check_symbol_exists(XASH_MSVC "build.h" XASH_MSVC)
 check_symbol_exists(XASH_NETBSD "build.h" XASH_NETBSD)
@@ -97,6 +98,15 @@ elseif(XASH_MIPS)
 	if(XASH_LITTLE_ENDIAN)
 		set(BUILDARCH "${BUILDARCH}el")
 	endif()
+elseif(XASH_PPC)
+	set(BUILDARCH "powerpc")
+	if(XASH_64BIT)
+		set(BUILDARCH "${BUILDARCH}64")
+	endif()
+
+	if(XASH_LITTLE_ENDIAN)
+		set(BUILDARCH "${BUILDARCH}le")
+	endif()
 elseif(XASH_RISCV)
 	set(BUILDARCH "riscv")
 	if(XASH_64BIT)

public/build.h

@@ -65,6 +65,7 @@ For more information, please refer to <http://unlicense.org/>
 #undef XASH_LITTLE_ENDIAN
 #undef XASH_MINGW
 #undef XASH_MIPS
+#undef XASH_PPC
 #undef XASH_MOBILE_PLATFORM
 #undef XASH_MSVC
 #undef XASH_NETBSD
@@ -212,6 +213,11 @@ For more information, please refer to <http://unlicense.org/>
 	#endif // __SOFTFP__
 #elif defined __mips__
 	#define XASH_MIPS 1
+#elif defined __powerpc__
+	#define XASH_PPC 1
+	#if defined __powerpc64__
+		#define XASH_64BIT 1
+	#endif
 #elif defined __EMSCRIPTEN__
 	#define XASH_JS 1
 #elif defined __e2k__