Doin' some Makefile reformatting. Trying to move as many things out o…

…f the MESS makefile as possible.

makefile

@@ -6,10 +6,15 @@
 #
 ###########################################################################
 
+#-------------------------------------------------------------------------------
+# Variables
+#-------------------------------------------------------------------------------
+
 # Absolute directory path to emscripten / closure compiler.
 EMSCRIPTEN_DIR = $(CURDIR)/third_party/emscripten
 CLOSURE_DIR = $(EMSCRIPTEN_DIR)/third_party/closure-compiler
 
+# Path to specific tools invoked during the build process.
 EMMAKE = $(EMSCRIPTEN_DIR)/emmake
 CLOSURE = $(CLOSURE_DIR)/compiler.jar
 
@@ -36,25 +41,44 @@ ifeq ($(firstword $(filter ppc64,$(UNAME))),ppc64)
 NATIVE_OBJ := $(NATIVE_OBJ)64
 endif
 
-GAME = "./bin/cosmofighter2.zip"
-BIOS = "./bin/coleco.zip"
+# Flags shared between the native tools build and emscripten build.
+# TODO: Document why each of these are set / what they do.
+SHARED_FLAGS = OSD=sdl       \
+               NOWERROR=1    \
+               NOASM=1       \
+               NO_X11=1      \
+               NO_DEBUGGER=1 \
 
 # Flags used to build the native tools.
-NATIVE_MESS_FLAGS = PREFIX=native OSD=sdl NOWERROR=1 NOASM=1 NO_X11=1 \
-										NO_DEBUGGER=1 CC=$(NATIVE_CC) CXX=$(NATIVE_CXX) \
-										AR=$(NATIVE_AR) LD=$(NATIVE_LD)
+# TODO: Document why each of these are set / what they do.
+NATIVE_MESS_FLAGS = PREFIX=native     \
+                    CC=$(NATIVE_CC)   \
+                    CXX=$(NATIVE_CXX) \
+                    AR=$(NATIVE_AR)   \
+                    LD=$(NATIVE_LD)   \
+                    OPTIMIZE=3
 
 # Flags used to make the emscripten build
-EMSCRIPTEN_MESS_FLAGS = TARGET=mess SUBTARGET=tiny OSD=sdl CROSS_BUILD=1 \
-												NATIVE_OBJ="$(NATIVE_OBJ)" \
-												TARGETOS=emscripten NOWERROR=1 NOASM=1 NO_X11=1 \
-												NO_DEBUGGER=1 PTR64=0
+# TODO: Document why each of these are set / what they do.
+EMSCRIPTEN_MESS_FLAGS = TARGET=mess                \
+                        SUBTARGET=tiny             \
+                        CROSS_BUILD=1              \
+                        NATIVE_OBJ="$(NATIVE_OBJ)" \
+                        TARGETOS=emscripten        \
+                        PTR64=0                    \
+                        SYMLEVEL=2                 \
+                        VERBOSE=1                  \
+                        OPTIMIZE=0
+
+#-------------------------------------------------------------------------------
+# Build Rules
+#-------------------------------------------------------------------------------
 
 default:
 	@if [ ! -f $(GAME) ]; then echo "Missing game file: $(GAME)"; exit 1; fi
 	@if [ ! -f $(BIOS) ]; then echo "Missing BIOS: $(BIOS)"; exit 1; fi
-	cd mess; make $(NATIVE_MESS_FLAGS) buildtools
-	cd mess; $(EMMAKE) make $(EMSCRIPTEN_MESS_FLAGS)
+	cd mess; make $(SHARED_FLAGS) $(NATIVE_MESS_FLAGS) buildtools
+	cd mess; $(EMMAKE) make $(SHARED_FLAGS) $(EMSCRIPTEN_MESS_FLAGS)
 	mv mess/messtiny mess/messtiny.bc
 	$(EMSCRIPTEN_DIR)/emcc -s DISABLE_EXCEPTION_CATCHING=0 mess/messtiny.bc \
 		-o messtiny.js --post-js post.js --embed-file $(BIOS) \
@@ -63,6 +87,6 @@ default:
 		--js_output_file mess_closure.js
 
 clean:
-	cd mess; make $(NATIVE_MESS_FLAGS) clean
-	cd mess; $(EMMAKE) make $(EMSCRIPTEN_MESS_FLAGS) clean
+	cd mess; make $(SHARED_FLAGS) $(NATIVE_MESS_FLAGS) clean
+	cd mess; $(EMMAKE) make $(SHARED_FLAGS) $(EMSCRIPTEN_MESS_FLAGS) clean
 	rm mess/messtiny.bc messtiny.js mess_closure.js

mess/makefile

@@ -217,7 +217,7 @@ BUILD_ZLIB = 1
 
 # specify symbols level or leave commented to use the default
 # (default is SYMLEVEL = 2 normally; use 1 if you only need backtrace)
-SYMLEVEL = 2
+# SYMLEVEL = 2
 
 # uncomment next line to dump the symbols to a .sym file
 # DUMPSYM = 1
@@ -229,11 +229,11 @@ SYMLEVEL = 2
 # MAP = 1
 
 # uncomment next line to generate verbose build information
-VERBOSE = 1
+# VERBOSE = 1
 
 # specify optimization level or leave commented to use the default
 # (default is OPTIMIZE = 3 normally, or OPTIMIZE = 0 with symbols)
-OPTIMIZE = 3
+# OPTIMIZE = 3
 
 
 ###########################################################################
@@ -284,7 +284,7 @@ endif
 #-------------------------------------------------
 
 # extension for executables
-EXE = 
+EXE =
 
 ifeq ($(TARGETOS),win32)
 EXE = .exe
@@ -408,7 +408,7 @@ endif
 ifdef DEBUG
 DEFS += -DMAME_DEBUG
 else
-DEFS += -DNDEBUG 
+DEFS += -DNDEBUG
 endif
 
 # define MAME_PROFILER if we are a profiling build
@@ -511,7 +511,7 @@ CONLYFLAGS += \
 
 # warnings only applicable to OBJ-C compiles
 COBJFLAGS += \
-	-Wpointer-arith 
+	-Wpointer-arith
 
 # TODO(jvilk): Where are the CPPONLYFLAGS?