Mostly working for me

Makefile

@@ -4,42 +4,40 @@
 include config.mk
 
 SRC = drw.c dwm.c util.c
-OBJ = ${SRC:.c=.o}
+OBJ = $(patsubst %.c,build/obj/%.c.o,$(SRC))
 
-all: dwm
+all: build/dwm compile_commands.json
 
-.c.o:
-	${CC} -c ${CFLAGS} $<
+build/obj/%.c.o: %.c
+	mkdir -p $(dir $@)
+	${CC} -c ${CFLAGS} -o $@ $<
 
 ${OBJ}: config.h config.mk
 
 config.h:
 	cp config.def.h $@
 
-dwm: ${OBJ}
+build/dwm: ${OBJ}
 	${CC} -o $@ ${OBJ} ${LDFLAGS}
 
 clean:
 	rm -f dwm ${OBJ} dwm-${VERSION}.tar.gz
 
-dist: clean
-	mkdir -p dwm-${VERSION}
-	cp -R LICENSE Makefile README config.def.h config.mk\
-		dwm.1 drw.h util.h ${SRC} dwm.png transient.c dwm-${VERSION}
-	tar -cf dwm-${VERSION}.tar dwm-${VERSION}
-	gzip dwm-${VERSION}.tar
-	rm -rf dwm-${VERSION}
-
 install: all
 	mkdir -p ${DESTDIR}${PREFIX}/bin
-	cp -f dwm ${DESTDIR}${PREFIX}/bin
+	cp -f build/dwm ${DESTDIR}${PREFIX}/bin
 	chmod 755 ${DESTDIR}${PREFIX}/bin/dwm
 	mkdir -p ${DESTDIR}${MANPREFIX}/man1
 	sed "s/VERSION/${VERSION}/g" < dwm.1 > ${DESTDIR}${MANPREFIX}/man1/dwm.1
 	chmod 644 ${DESTDIR}${MANPREFIX}/man1/dwm.1
+	cp dwm.desktop /usr/share/xsessions/dwm.desktop
 
 uninstall:
-	rm -f ${DESTDIR}${PREFIX}/bin/dwm\
-		${DESTDIR}${MANPREFIX}/man1/dwm.1
+	rm -f ${DESTDIR}${PREFIX}/bin/dwm \
+		${DESTDIR}${MANPREFIX}/man1/dwm.1 \
+		/usr/share/xsessions/dwm.desktop
+
+compile_commands.json:
+	compiledb -n make
 
 .PHONY: all clean dist install uninstall