Index: head/emulators/mame/Makefile
===================================================================
--- head/emulators/mame/Makefile
+++ head/emulators/mame/Makefile
@@ -11,8 +11,8 @@
 
 LICENSE=	GPLv2
 
-ONLY_FOR_ARCHS=		amd64 i386
-ONLY_FOR_ARCHS_REASON=	not yet ported to any arch other than x86
+ONLY_FOR_ARCHS=		amd64 i386 powerpc64
+ONLY_FOR_ARCHS_REASON=	not yet ported to any arch other than x86 and powerpc64
 
 LIB_DEPENDS=	libFLAC.so:audio/flac \
 		libexpat.so:textproc/expat2 \
@@ -58,7 +58,7 @@
 
 .include <bsd.port.options.mk>
 
-.if ${ARCH} == amd64
+.if ${ARCH} == amd64 || ${ARCH} == powerpc64
 MAKE_ARGS+=	PTR64=1
 EMULATOR=	${MSUBTARGET}64
 .else
Index: head/emulators/mame/files/patch-3rdparty_bx_include_bx_inline_endian.inl
===================================================================
--- head/emulators/mame/files/patch-3rdparty_bx_include_bx_inline_endian.inl
+++ head/emulators/mame/files/patch-3rdparty_bx_include_bx_inline_endian.inl
@@ -0,0 +1,29 @@
+--- 3rdparty/bx/include/bx/inline/endian.inl.orig	2019-04-24 05:00:38 UTC
++++ 3rdparty/bx/include/bx/inline/endian.inl
+@@ -46,7 +46,7 @@ namespace bx
+ 	}
+ 
+ 	template <typename Ty>
+-	inline Ty toLittleEndian(const Ty _in)
++	inline Ty toLittleEndian(Ty _in)
+ 	{
+ #if BX_CPU_ENDIAN_BIG
+ 		return endianSwap(_in);
+@@ -56,7 +56,7 @@ namespace bx
+ 	}
+ 
+ 	template <typename Ty>
+-	inline Ty toBigEndian(const Ty _in)
++	inline Ty toBigEndian(Ty _in)
+ 	{
+ #if BX_CPU_ENDIAN_LITTLE
+ 		return endianSwap(_in);
+@@ -66,7 +66,7 @@ namespace bx
+ 	}
+ 
+ 	template <typename Ty>
+-	inline Ty toHostEndian(const Ty _in, bool _fromLittleEndian)
++	inline Ty toHostEndian(Ty _in, bool _fromLittleEndian)
+ 	{
+ #if BX_CPU_ENDIAN_LITTLE
+ 		return _fromLittleEndian ? _in : endianSwap(_in);
Index: head/emulators/mame/files/patch-3rdparty_bx_include_bx_inline_readerwriter.inl
===================================================================
--- head/emulators/mame/files/patch-3rdparty_bx_include_bx_inline_readerwriter.inl
+++ head/emulators/mame/files/patch-3rdparty_bx_include_bx_inline_readerwriter.inl
@@ -0,0 +1,76 @@
+--- 3rdparty/bx/include/bx/inline/readerwriter.inl.orig	2019-04-24 05:00:38 UTC
++++ 3rdparty/bx/include/bx/inline/readerwriter.inl
+@@ -273,7 +273,7 @@ namespace bx
+ 	}
+ 
+ 	template<typename Ty>
+-	int32_t read(ReaderI* _reader, Ty& _value, Error* _err)
++	inline int32_t read(ReaderI* _reader, Ty& _value, Error* _err)
+ 	{
+ 		BX_ERROR_SCOPE(_err);
+ 		BX_STATIC_ASSERT(isTriviallyCopyable<Ty>() );
+@@ -281,7 +281,7 @@ namespace bx
+ 	}
+ 
+ 	template<typename Ty>
+-	int32_t readHE(ReaderI* _reader, Ty& _value, bool _fromLittleEndian, Error* _err)
++	inline int32_t readHE(ReaderI* _reader, Ty& _value, bool _fromLittleEndian, Error* _err)
+ 	{
+ 		BX_ERROR_SCOPE(_err);
+ 		BX_STATIC_ASSERT(isTriviallyCopyable<Ty>() );
+@@ -329,7 +329,7 @@ namespace bx
+ 	}
+ 
+ 	template<typename Ty>
+-	int32_t write(WriterI* _writer, const Ty& _value, Error* _err)
++	inline int32_t write(WriterI* _writer, const Ty& _value, Error* _err)
+ 	{
+ 		BX_ERROR_SCOPE(_err);
+ 		BX_STATIC_ASSERT(isTriviallyCopyable<Ty>() );
+@@ -337,7 +337,7 @@ namespace bx
+ 	}
+ 
+ 	template<typename Ty>
+-	int32_t writeLE(WriterI* _writer, const Ty& _value, Error* _err)
++	inline int32_t writeLE(WriterI* _writer, const Ty& _value, Error* _err)
+ 	{
+ 		BX_ERROR_SCOPE(_err);
+ 		BX_STATIC_ASSERT(isTriviallyCopyable<Ty>() );
+@@ -346,8 +346,14 @@ namespace bx
+ 		return result;
+ 	}
+ 
++	template<>
++	inline int32_t writeLE(WriterI* _writer, const float& _value, Error* _err)
++	{
++		return writeLE(_writer, floatToBits(_value), _err);
++	}
++
+ 	template<typename Ty>
+-	int32_t writeBE(WriterI* _writer, const Ty& _value, Error* _err)
++	inline int32_t writeBE(WriterI* _writer, const Ty& _value, Error* _err)
+ 	{
+ 		BX_ERROR_SCOPE(_err);
+ 		BX_STATIC_ASSERT(isTriviallyCopyable<Ty>() );
+@@ -356,6 +362,12 @@ namespace bx
+ 		return result;
+ 	}
+ 
++	template<>
++	inline int32_t writeBE(WriterI* _writer, const float& _value, Error* _err)
++	{
++		return writeBE(_writer, floatToBits(_value), _err);
++	}
++
+ 	inline int64_t skip(SeekerI* _seeker, int64_t _offset)
+ 	{
+ 		return _seeker->seek(_offset, Whence::Current);
+@@ -392,7 +404,7 @@ namespace bx
+ 	}
+ 
+ 	template<typename Ty>
+-	int32_t peek(ReaderSeekerI* _reader, Ty& _value, Error* _err)
++	inline int32_t peek(ReaderSeekerI* _reader, Ty& _value, Error* _err)
+ 	{
+ 		BX_ERROR_SCOPE(_err);
+ 		BX_STATIC_ASSERT(isTriviallyCopyable<Ty>() );
Index: head/emulators/mame/files/patch-3rdparty_bx_include_bx_readerwriter.h
===================================================================
--- head/emulators/mame/files/patch-3rdparty_bx_include_bx_readerwriter.h
+++ head/emulators/mame/files/patch-3rdparty_bx_include_bx_readerwriter.h
@@ -0,0 +1,10 @@
+--- 3rdparty/bx/include/bx/readerwriter.h.orig	2019-04-24 05:00:38 UTC
++++ 3rdparty/bx/include/bx/readerwriter.h
+@@ -10,6 +10,7 @@
+ #include "endian.h"
+ #include "error.h"
+ #include "filepath.h"
++#include "math.h"
+ #include "string.h"
+ #include "uint32_t.h"
+ 
Index: head/emulators/mame/files/patch-3rdparty_bx_tests_readerwriter__test.cpp
===================================================================
--- head/emulators/mame/files/patch-3rdparty_bx_tests_readerwriter__test.cpp
+++ head/emulators/mame/files/patch-3rdparty_bx_tests_readerwriter__test.cpp
@@ -0,0 +1,34 @@
+--- 3rdparty/bx/tests/readerwriter_test.cpp.orig	2019-07-24 09:54:15 UTC
++++ 3rdparty/bx/tests/readerwriter_test.cpp
+@@ -0,0 +1,31 @@
++/*
++ * Copyright 2010-2019 Branimir Karadzic. All rights reserved.
++ * License: https://github.com/bkaradzic/bx#license-bsd-2-clause
++ */
++
++#include "test.h"
++#include <bx/readerwriter.h>
++
++TEST_CASE("writeLE", "")
++{
++	bx::SizerWriter writer;
++
++	bx::Error err;
++
++	int32_t total = bx::writeLE(&writer, 1.0f, &err);
++
++	REQUIRE(err.isOk() );
++	REQUIRE(total == 4);
++}
++
++TEST_CASE("writeBE", "")
++{
++	bx::SizerWriter writer;
++
++	bx::Error err;
++
++	int32_t total = bx::writeBE(&writer, 1.0f, &err);
++
++	REQUIRE(err.isOk() );
++	REQUIRE(total == 4);
++}