diff --git a/Makefile.os4 b/Makefile.os4
index 2a7295d7..f317bcdb 100644
--- a/Makefile.os4
+++ b/Makefile.os4
@@ -3,19 +3,76 @@
 #
 # Created on: 26-12-2021 
 #
-.PHONY: build release
 
-default: build
+LiteXL_OBJ := \
+	 src/dirmonitor.o src/main.o src/rencache.o src/renderer.o \
+	 src/renwindow.o src/api/api.o src/api/regex.o \
+	 src/api/renderer.o src/api/system.o src/platform/amigaos4.o
+
+
+outfile := lite
+compiler := gcc
+cxxcompiler := g++
+
+INCPATH := -Isrc -Ilib/dmon -I/sdk/local/newlib/include/SDL2 -I/sdk/local/common/include/freetype2
+DFLAGS := -D__USE_INLINE__ -DLITE_XL_DATA_USE_EXEDIR
+# -DLITE_USE_SDL_RENDERER
+# -Wextra -Wall
+CFLAGS :=  -Werror -Wwrite-strings -O3 -g -std=gnu11 -fno-strict-aliasing
+# "-gstabs -finstrument-functions -fno-inline -DPROFILING"
+LFLAGS := -mcrt=newlib -static-libgcc -static-libstdc++ -lauto -lpcre2 -lSDL2 -llua -lagg -lfreetype -lm -lunix -lpthread -athread=native
+# " -lprofyle"
+
+
+
+.PHONY: LiteXL clean release
+
+default: LiteXL
+
+clean:
+	@echo "Cleaning compiler objects..."
+	@rm -f  $(LiteXL_OBJ)
+
+LiteXL: $(LiteXL_OBJ)
+	@echo "Linking LiteXL"
+	@$(cxxcompiler) -o $(outfile) $(LiteXL_OBJ) $(LFLAGS)	
+
+
+
+.c.o:
+	@echo "Compiling $<"
+	@$(compiler) -c $< -o $*.o $(CFLAGS) $(INCPATH) $(DFLAGS)
+
+src/dirmonitor.o: src/dirmonitor.c src/platform/amigaos4.h
+
+src/main.o: src/main.c src/api/api.h src/rencache.h \
+	src/renderer.h src/platform/amigaos4.h src/dirmonitor.h
+
+src/rencache.o: src/rencache.c
+
+src/renderer.o: src/renderer.c
+
+src/renwindow.o: src/renwindow.c
+
+src/api/api.o: src/api/api.c
+
+src/api/regex.o: src/api/regex.c
+
+src/api/renderer.o: src/api/renderer.c
+
+src/api/system.o: src/api/system.c
+
+src/platform/amigaos4.o: src/platform/amigaos4.c
+
+
 
-build:
-	@sh os4build.sh
 
 release:
 	mkdir -p release/LiteXL
 	cp release_files/* release/LiteXL/ -r
 	mv release/LiteXL/LiteXL.info release/
 	cp data release/LiteXL/ -r
-	cp doc release/LiteXL/ -r
+	cp changelog.md release/LiteXL/
 	cp lite release/LiteXL/
 	strip release/LiteXL/lite
 	cp README.md release/LiteXL/
diff --git a/os4build.sh b/os4build.sh
deleted file mode 100644
index eae70a0d..00000000
--- a/os4build.sh
+++ /dev/null
@@ -1,34 +0,0 @@
-#!/bin/bash
-
-outfile="lite"
-compiler="gcc"
-cxxcompiler="g++"
-
-INCPATH="-Isrc -Ilib/dmon -I/sdk/local/newlib/include/SDL2 -I/sdk/local/common/include/freetype2"
-DFLAGS="-D__USE_INLINE__ -DLITE_XL_DATA_USE_EXEDIR -DLITE_USE_SDL_RENDERER"
-CFLAGS="-Wall -O3 -g -std=gnu11 -fno-strict-aliasing"
-LFLAGS="-mcrt=newlib -static-libgcc -static-libstdc++ -lauto -lpcre2 -lSDL2 -llua -lagg -lfreetype -lm -lunix -lpthread -athread=native"
-
-echo "compiling lite..."
-
-# $compiler -c src/dirmonitor.c  -o dirmonitor.o   $CFLAGS $INCPATH $DFLAGS 
-$compiler -c src/main.c        -o main.o         $CFLAGS $INCPATH $DFLAGS 
-$compiler -c src/rencache.c    -o rencache.o     $CFLAGS $INCPATH $DFLAGS 
-$compiler -c src/renderer.c    -o renderer.o     $CFLAGS $INCPATH $DFLAGS 
-$compiler -c src/renwindow.c   -o renwindow.o    $CFLAGS $INCPATH $DFLAGS 
-
-$compiler -c src/api/api.c        -o api.o           $CFLAGS $INCPATH $DFLAGS 
-# $compiler -c src/api/process.c    -o process.o       $CFLAGS $INCPATH $DFLAGS 
-$compiler -c src/api/regex.c      -o regex.o         $CFLAGS $INCPATH $DFLAGS 
-$compiler -c src/api/renderer.c   -o apirenderer.o   $CFLAGS $INCPATH $DFLAGS 
-$compiler -c src/api/system.c     -o system.o        $CFLAGS $INCPATH $DFLAGS 
-
-$compiler -c src/platform/amigaos4.c -o amigaos4.o   $CFLAGS $INCPATH $DFLAGS 
-
-echo "linking..."
-$cxxcompiler -o $outfile *.o $LFLAGS
-
-echo "cleaning up..."
-rm *.o
-echo "done"
-