path: root/make_single_applets.sh (plain)
blob: 00f502eda4e27edd9641d2f1e2849811f5179794

1	#!/bin/sh
2	# This script expects that the tree was built with the desired .config:
3	# in particular, it expects that include/applets.h is generated already.
4	#
5	# The script will try to rebuild each enabled applet in isolation.
6	# All other options which chose general bbox config, applet features, etc,
7	# are not modified for the builds.
8
9	makeopts="-j9"
10
11	# The list of all applet config symbols
12	test -f include/applets.h || { echo "No include/applets.h file"; exit 1; }
13	apps="`
14	grep ^IF_ include/applets.h \
15	| grep -v ^IF_FEATURE_ \
16	| sed 's/IF_\([A-Z0-9._-]*\)(.*/\1/' \
17	| sort | uniq
18	`"
19
20	# Take existing config
21	test -f .config || { echo "No .config file"; exit 1; }
22	cfg="`cat .config`"
23
24	# Make a config with all applet symbols off
25	allno="$cfg"
26	for app in $apps; do
27	allno="`echo "$allno" | sed "s/^CONFIG_${app}=y\$/# CONFIG_${app} is not set/"`"
28	done
29	#echo "$allno" >.config_allno
30
31	# Turn on each applet individually and build single-applet executable
32	fail=0
33	for app in $apps; do
34	# Only if it was indeed originally enabled...
35	{ echo "$cfg" | grep -q "^CONFIG_${app}=y\$"; } || continue
36
37	echo "Making ${app}..."
38	mv .config .config.SV
39	echo "CONFIG_${app}=y" >.config
40	echo "$allno" | sed "/^# CONFIG_${app} is not set\$/d" >>.config
41
42	if test x"${app}" != x"SH_IS_ASH" && test x"${app}" != x"SH_IS_HUSH"; then
43	# $allno has all choices for "sh" aliasing set to off.
44	# "sh" aliasing defaults to "ash", not none.
45	# without this fix, "make oldconfig" sets it wrong,
46	# resulting in NUM_APPLETS = 2 (the second applet is "sh")
47	sed '/CONFIG_SH_IS_NONE/d' -i .config
48	echo "CONFIG_SH_IS_NONE=y" >>.config
49	fi
50
51	if ! yes '' | make oldconfig >busybox_make_${app}.log 2>&1; then
52	: $((fail++))
53	echo "Config error for ${app}"
54	mv .config busybox_config_${app}
55	elif ! make $makeopts >>busybox_make_${app}.log 2>&1; then
56	: $((fail++))
57	echo "Build error for ${app}"
58	mv .config busybox_config_${app}
59	elif ! grep -q '^#define NUM_APPLETS 1$' include/NUM_APPLETS.h; then
60	mv busybox busybox_${app}
61	: $((fail++))
62	echo "NUM_APPLETS != 1 for ${app}: `cat include/NUM_APPLETS.h`"
63	mv .config busybox_config_${app}
64	else
65	mv busybox busybox_${app}
66	rm busybox_make_${app}.log
67	fi
68	mv .config.SV .config
69	#exit
70	done
71	touch .config # or else next "make" can be confused
72	echo "Failures: $fail"
73	test $fail = 0 # set exitcode
74