build system: remove some unnecessary rebuilds
[oweals/busybox.git] / applets / Kbuild
1 # Makefile for busybox
2 #
3 # Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
4 #
5 # Licensed under the GPL v2, see the file LICENSE in this tarball.
6
7 obj-y :=
8 obj-y += applets.o
9
10 hostprogs-y:=
11 hostprogs-y += usage applet_tables
12
13 always:= $(hostprogs-y)
14
15 # Generated files need additional love
16 # NB: __srctree is either empty or "srctree/"
17 # using it instead of srctree decreases amount of rebuilds
18 # if tree is merely renamed/copied
19
20 HOSTCFLAGS_usage.o = -I$(__srctree)include
21
22 applets/applets.o: include/usage_compressed.h include/applet_tables.h
23
24 applets/usage:         .config $(__srctree)applets/usage_compressed
25 applets/applet_tables: .config
26
27 quiet_cmd_gen_usage_compressed = GEN     include/usage_compressed.h
28       cmd_gen_usage_compressed = $(__srctree)applets/usage_compressed include/usage_compressed.h applets
29
30 include/usage_compressed.h: applets/usage $(__srctree)applets/usage_compressed
31         $(call cmd,gen_usage_compressed)
32
33 quiet_cmd_gen_applet_tables = GEN     include/applet_tables.h
34       cmd_gen_applet_tables = applets/applet_tables include/applet_tables.h
35
36 include/applet_tables.h: applets/applet_tables
37         $(call cmd,gen_applet_tables)