Apply bsnes' customisations back on top of the upstream SameBoy source.

This includes changes to SameBoy (updating the README to be clear about
provenance, and adding a GNUmakefile to integrate with bsnes' build system),
updates the SameBoy version number in the about box, and adds SameBoy to the
list of subtrees updated by update-subtrees.sh.

bsnes/gb/GNUmakefile

@@ -0,0 +1,26 @@
+flags += -DGB_INTERNAL -DGB_DISABLE_DEBUGGER -DGB_DISABLE_CHEATS -D_GNU_SOURCE -Wno-multichar
+options += -I../sameboy
+
+objects += gb-apu gb-camera gb-rumble gb-display gb-gb gb-joypad gb-mbc
+objects += gb-memory gb-printer gb-random gb-rewind gb-save_state gb-sgb
+objects += gb-sm83_cpu gb-symbol_hash gb-timing
+#objects+= gb-debugger gb-sm83_disassembler
+
+obj/gb-apu.o:               gb/Core/apu.c
+obj/gb-camera.o:            gb/Core/camera.c
+obj/gb-debugger.o:          gb/Core/debugger.c
+obj/gb-rumble.o:            gb/Core/rumble.c
+obj/gb-display.o:           gb/Core/display.c
+obj/gb-gb.o:                gb/Core/gb.c
+obj/gb-joypad.o:            gb/Core/joypad.c
+obj/gb-mbc.o:               gb/Core/mbc.c
+obj/gb-memory.o:            gb/Core/memory.c
+obj/gb-printer.o:           gb/Core/printer.c
+obj/gb-random.o:            gb/Core/random.c
+obj/gb-rewind.o:            gb/Core/rewind.c
+obj/gb-save_state.o:        gb/Core/save_state.c
+obj/gb-sgb.o:               gb/Core/sgb.c
+obj/gb-sm83_cpu.o:          gb/Core/sm83_cpu.c
+obj/gb-sm83_disassembler.o: gb/Core/sm83_disassembler.c
+obj/gb-symbol_hash.o:       gb/Core/symbol_hash.c
+obj/gb-timing.o:            gb/Core/timing.c

bsnes/gb/README.md

@@ -2,6 +2,10 @@
 
 SameBoy is an open source Game Boy (DMG) and Game Boy Color (CGB) emulator, written in portable C. It has a native Cocoa frontend for macOS, an SDL frontend for other operating systems, and a libretro core. It also includes a text-based debugger with an expression evaluator. Visit [the website](https://sameboy.github.io/).
 
+## bsnes integration
+
+This directory should be a clean copy of the upstream SameBoy source, with the exception of this section of the README, and the `GNUmakefile` file that integrates it with bsnes' build system. Only files in the `Core/` directory are used, none of the UI or other portions.
+
 ## Features
 Features common to both Cocoa and SDL versions:
  * Supports Game Boy (DMG) and Game Boy Color (CGB) emulation

bsnes/target-bsnes/presentation/presentation.cpp

@@ -183,7 +183,7 @@ auto Presentation::create() -> void {
     .setName("SameBoy")
     .setLogo(Resource::SameBoy)
     .setDescription("Super Game Boy emulator")
-    .setVersion("0.13.1")
+    .setVersion("0.13.6")
     .setCopyright("Lior Halphon")
     .setLicense("MIT")
     .setWebsite("https://sameboy.github.io")

update-subtrees.sh

@@ -11,3 +11,9 @@ cd "$(dirname "$0")" || exit 1
 
 # Merge changes from the libco repository.
 git subtree pull --prefix=libco https://github.com/higan-emu/libco.git master
+
+# Merge changes from SameBoy
+git subtree pull --prefix=bsnes/gb https://github.com/LIJI32/SameBoy.git master
+echo "If SameBoy updated, remember to update the SameBoy version"
+echo "in bsnes/target-bsnes/presentation/presentation.cpp !"
+