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58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
# Makefile for busybox
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#
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# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
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#
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# Licensed under GPLv2, see file LICENSE in this source tree.
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obj-y :=
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obj-y += applets.o
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hostprogs-y:=
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hostprogs-y += usage usage_pod applet_tables
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always:= $(hostprogs-y)
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# Generated files need additional love
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# This trick decreases amount of rebuilds
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# if tree is merely renamed/copied
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ifeq ($(srctree),$(objtree))
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srctree_slash =
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else
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srctree_slash = $(srctree)/
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endif
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HOSTCFLAGS_usage.o = -I$(srctree_slash)include -Iinclude
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HOSTCFLAGS_usage_pod.o = -I$(srctree_slash)include -Iinclude
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applets/applets.o: include/usage_compressed.h include/applet_tables.h
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applets/applet_tables: .config include/applets.h
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applets/usage: .config include/applets.h
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applets/usage_pod: .config include/applets.h include/applet_tables.h
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quiet_cmd_gen_usage_compressed = GEN include/usage_compressed.h
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cmd_gen_usage_compressed = $(srctree_slash)applets/usage_compressed include/usage_compressed.h applets
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include/usage_compressed.h: applets/usage $(srctree_slash)applets/usage_compressed
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$(call cmd,gen_usage_compressed)
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quiet_cmd_gen_applet_tables = GEN include/applet_tables.h include/NUM_APPLETS.h
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cmd_gen_applet_tables = applets/applet_tables include/applet_tables.h include/NUM_APPLETS.h
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include/NUM_APPLETS.h: applets/applet_tables
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$(call cmd,gen_applet_tables)
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# In fact, include/applet_tables.h depends only on applets/applet_tables,
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# and is generated by it. But specifying only it can run
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# applets/applet_tables twice, possibly in parallel.
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# We say that it also needs NUM_APPLETS.h
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#
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# Unfortunately, we need to list the same command,
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# and it can be executed twice (sequentially).
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# The alternative is to not list any command,
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# and then if include/applet_tables.h is deleted, it won't be rebuilt.
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#
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include/applet_tables.h: include/NUM_APPLETS.h applets/applet_tables
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$(call cmd,gen_applet_tables)
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