Index: uspace/app/tetris/Makefile
===================================================================
--- uspace/app/tetris/Makefile	(revision e035612a97a6dc9b7ae6bd3dc822df045dd8afdf)
+++ uspace/app/tetris/Makefile	(revision 4a537dda1680cfd9fd57ba877d36d641060c8f7f)
@@ -1,37 +1,40 @@
-LIBC_PREFIX = ../../lib/libc
-SOFTINT_PREFIX = ../../lib/softint
+#
+# Copyright (c) 2005 Martin Decky
+# Copyright (c) 2007 Jakub Jermar
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
 
-include $(LIBC_PREFIX)/Makefile.toolchain
+include Makefile.common
 
-LIBS = $(LIBC_PREFIX)/libc.a
+.PHONY: all clean
 
-OUTPUT = tetris
-SOURCES = shapes.c scores.c input.c tetris.c screen.c
-OBJECTS := $(addsuffix .o,$(basename $(SOURCES)))
-
-.PHONY: all clean depend
-
-all: $(OUTPUT) $(OUTPUT).disasm
-
--include Makefile.depend
-
-depend:
-	$(CC) $(DEFS) $(CFLAGS) -M $(SOURCES) > Makefile.depend
-
-$(OUTPUT): $(OBJECTS) $(LIBS)
-	$(LD) -T $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld $(OBJECTS) $(LIBS) $(LFLAGS) -o $@ -Map $(OUTPUT).map
+all: $(LIBC_PREFIX)/../../../Makefile.config $(LIBC_PREFIX)/../../../config.h $(LIBC_PREFIX)/../../../config.defs $(LIBS)
+	-[ -f $(DEPEND) ] && mv -f $(DEPEND) $(DEPEND_PREV)
+	$(MAKE) -f Makefile.build
 
 clean:
-	-rm -f $(OUTPUT) $(OUTPUT).map $(OUTPUT).disasm Makefile.depend *.o
-
-$(OUTPUT).disasm: $(OUTPUT)
-	$(OBJDUMP) -d $< > $@
-
-%.o: %.S
-	$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@
-
-%.o: %.s
-	$(AS) $(AFLAGS) $< -o $@
-
-%.o: %.c
-	$(CC) $(DEFS) $(CFLAGS) -c $< -o $@
+	rm -f $(DEPEND) $(DEPEND_PREV) $(OUTPUT) $(OUTPUT).map $(OUTPUT).disasm
+	find . -name '*.o' -follow -exec rm \{\} \;
Index: uspace/app/tetris/Makefile.build
===================================================================
--- uspace/app/tetris/Makefile.build	(revision 4a537dda1680cfd9fd57ba877d36d641060c8f7f)
+++ uspace/app/tetris/Makefile.build	(revision 4a537dda1680cfd9fd57ba877d36d641060c8f7f)
@@ -0,0 +1,65 @@
+#
+# Copyright (c) 2005 Martin Decky
+# Copyright (c) 2007 Jakub Jermar
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+## Setup toolchain
+#
+
+include Makefile.common
+include $(LIBC_PREFIX)/Makefile.toolchain
+
+## Sources
+#
+
+SOURCES = \
+	shapes.c \
+	scores.c \
+	input.c \
+	tetris.c \
+	screen.c
+
+OBJECTS := $(addsuffix .o,$(basename $(SOURCES)))
+
+.PHONY: all
+
+all: $(OUTPUT) $(OUTPUT).disasm
+
+-include $(DEPEND)
+
+$(OUTPUT).disasm: $(OUTPUT)
+	$(OBJDUMP) -d $< > $@
+
+$(OUTPUT): $(OBJECTS) $(LIBS)
+	$(LD) -T $(LIBC_PREFIX)/arch/$(UARCH)/_link.ld $(OBJECTS) $(LIBS) $(LFLAGS) -o $@ -Map $(OUTPUT).map
+
+%.o: %.c $(DEPEND)
+	$(CC) $(DEFS) $(CFLAGS) -c $< -o $@
+
+$(DEPEND):
+	makedepend -f - -- $(DEPEND_DEFS) $(CFLAGS) -- $(SOURCES) > $@ 2> /dev/null
+	-[ -f $(DEPEND_PREV) ] && diff -q $(DEPEND_PREV) $@ && mv -f $(DEPEND_PREV) $@
Index: uspace/app/tetris/Makefile.common
===================================================================
--- uspace/app/tetris/Makefile.common	(revision 4a537dda1680cfd9fd57ba877d36d641060c8f7f)
+++ uspace/app/tetris/Makefile.common	(revision 4a537dda1680cfd9fd57ba877d36d641060c8f7f)
@@ -0,0 +1,39 @@
+#
+# Copyright (c) 2005 Martin Decky
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# - Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+# - The name of the author may not be used to endorse or promote products
+#   derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+
+## Common names
+#
+
+LIBC_PREFIX = ../../lib/libc
+SOFTINT_PREFIX = ../../lib/softint
+LIBS = $(LIBC_PREFIX)/libc.a
+
+DEPEND = Makefile.depend
+DEPEND_PREV = $(DEPEND).prev
+OUTPUT = tetris