New top-level Makefile.

Based on this commit by @DankRank:
DankRank@3dd5ea8

GNU make handles dependency checking significantly better than batch files
and shell scripts, plus it can run builds in parallel.

Build.bat

@@ -1,61 +1,2 @@
-@echo off
-
-cd multidol
-echo.
-echo Building Multi-DOL Loader
-echo.
-make windows=1 clean
-make windows=1
-
-cd ..\kernel\asm
-echo.
-echo Building asm files
-echo.
-make windows=1 clean
-make windows=1
-
-cd ..\..\resetstub
-echo.
-echo Building Reset Stub
-echo.
-make clean
-make
-
-cd ..\fatfs
-echo.
-echo Building FatFS libraries
-echo.
-make -f Makefile.arm clean
-make -f Makefile.arm
-make -f Makefile.ppc clean
-make -f Makefile.ppc
-
-cd ..\codehandler
-echo.
-echo Building Nintendont Codehandler
-echo.
-call build.bat
-
-cd ..\kernel
-echo.
-echo Building Nintendont Kernel
-echo.
-make windows=1 clean
-make windows=1
-
-cd ..\loader\source\ppc
-echo.
-echo Building Nintendont HID
-echo.
-make clean
-make
-
-cd ..\..\..\loader
-echo.
-echo Building Nintendont Loader
-echo.
-make clean
-make
-
-echo.
-pause
+@REM This batch file is still here for compatibility reasons.
+make forced

Build.sh

@@ -1,60 +1,3 @@
 #!/bin/sh
-
-cd multidol
-echo " "
-echo "Building Multi-DOL Loader"
-echo " "
-make clean
-make
-
-cd ../kernel/asm
-echo " "
-echo "Building asm files"
-echo " "
-make clean
-make
-
-cd ../../resetstub
-echo " "
-echo "Building Reset Stub"
-echo " "
-make clean
-make
-
-cd ../fatfs
-echo " "
-echo "Building FatFS libraries"
-echo " "
-make -f Makefile.arm clean
-make -f Makefile.arm
-make -f Makefile.ppc clean
-make -f Makefile.ppc
-
-cd ../codehandler
-echo " "
-echo "Building Nintendont Codehandler"
-echo " "
-sh ./build.sh
-
-cd ../kernel
-echo " "
-echo "Building Nintendont Kernel"
-echo " "
-make clean
-make
-
-cd ../loader/source/ppc
-echo " "
-echo "Building Nintendont HID"
-echo " "
-make clean
-make
-
-cd ../../../loader
-echo " "
-echo "Building Nintendont Loader"
-echo " "
-make clean
-make
-
-echo " "
+# This shell script is still here for compatibility reasons.
+make forced

Makefile

@@ -0,0 +1,76 @@
+SUBPROJECTS := multidol kernel/asm resetstub \
+	fatfs/libfat-arm.a fatfs/libfat-ppc.a \
+	codehandler kernel \
+	loader/source/ppc loader
+.PHONY: all forced clean $(SUBPROJECTS)
+
+all: loader
+forced: clean all
+
+multidol:
+	@echo " "
+	@echo "Building Multi-DOL loader"
+	@echo " "
+	$(MAKE) -C multidol
+
+kernel/asm:
+	@echo " "
+	@echo "Building asm files"
+	@echo " "
+	$(MAKE) -C kernel/asm
+
+resetstub:
+	@echo " "
+	@echo "Building reset stub"
+	@echo " "
+	$(MAKE) -C resetstub
+
+fatfs/libfat-arm.a:
+	@echo " "
+	@echo "Building FatFS library for ARM"
+	@echo " "
+	$(MAKE) -C fatfs -f Makefile.arm
+
+fatfs/libfat-ppc.a:
+	@echo " "
+	@echo "Building FatFS library for PPC"
+	@echo " "
+	$(MAKE) -C fatfs -f Makefile.ppc
+
+codehandler:
+	@echo " "
+	@echo "Building Nintendont code handler"
+	@echo " "
+	$(MAKE) -C codehandler
+
+kernel: kernel/asm fatfs/libfat-arm.a codehandler
+	@echo " "
+	@echo "Building Nintendont kernel"
+	@echo " "
+	$(MAKE) -C kernel
+
+loader/source/ppc:
+	@echo " "
+	@echo "Building Nintendont HID"
+	@echo " "
+	$(MAKE) -C loader/source/ppc
+
+loader: multidol resetstub fatfs/libfat-ppc.a kernel loader/source/ppc
+	@echo " "
+	@echo "Building Nintendont loader"
+	@echo " "
+	$(MAKE) -C loader
+
+clean:
+	@echo " "
+	@echo "Cleaning all subprojects..."
+	@echo " "
+	$(MAKE) -C multidol clean
+	$(MAKE) -C kernel/asm clean
+	$(MAKE) -C resetstub clean
+	$(MAKE) -C fatfs -f Makefile.arm clean
+	$(MAKE) -C fatfs -f Makefile.ppc clean
+	$(MAKE) -C codehandler clean
+	$(MAKE) -C kernel clean
+	$(MAKE) -C loader/source/ppc clean
+	$(MAKE) -C loader clean