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4b5f7214 JS |
1 | #!/bin/sh |
2 | # merge_config.sh - Takes a list of config fragment values, and merges | |
3 | # them one by one. Provides warnings on overridden values, and specified | |
4 | # values that did not make it to the resulting .config file (due to missed | |
5 | # dependencies or config symbol removal). | |
6 | # | |
7 | # Portions reused from kconf_check and generate_cfg: | |
8 | # http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/kconf_check | |
9 | # http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/generate_cfg | |
10 | # | |
11 | # Copyright (c) 2009-2010 Wind River Systems, Inc. | |
12 | # Copyright 2011 Linaro | |
13 | # | |
14 | # This program is free software; you can redistribute it and/or modify | |
15 | # it under the terms of the GNU General Public License version 2 as | |
16 | # published by the Free Software Foundation. | |
17 | # | |
18 | # This program is distributed in the hope that it will be useful, | |
19 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
21 | # See the GNU General Public License for more details. | |
22 | ||
23 | clean_up() { | |
24 | rm -f $TMP_FILE | |
25 | exit | |
26 | } | |
27 | trap clean_up SIGHUP SIGINT SIGTERM | |
28 | ||
29 | usage() { | |
30 | echo "Usage: $0 [OPTIONS] [CONFIG [...]]" | |
31 | echo " -h display this help text" | |
32 | echo " -m only merge the fragments, do not execute the make command" | |
33 | echo " -n use allnoconfig instead of alldefconfig" | |
34 | } | |
35 | ||
36 | MAKE=true | |
37 | ALLTARGET=alldefconfig | |
38 | ||
39 | while true; do | |
40 | case $1 in | |
41 | "-n") | |
42 | ALLTARGET=allnoconfig | |
43 | shift | |
44 | continue | |
45 | ;; | |
46 | "-m") | |
47 | MAKE=false | |
48 | shift | |
49 | continue | |
50 | ;; | |
51 | "-h") | |
52 | usage | |
53 | exit | |
54 | ;; | |
55 | *) | |
56 | break | |
57 | ;; | |
58 | esac | |
59 | done | |
60 | ||
61 | ||
62 | ||
63 | MERGE_LIST=$* | |
64 | SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p" | |
65 | TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX) | |
66 | ||
67 | # Merge files, printing warnings on overrided values | |
68 | for MERGE_FILE in $MERGE_LIST ; do | |
69 | echo "Merging $MERGE_FILE" | |
70 | CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE) | |
71 | ||
72 | for CFG in $CFG_LIST ; do | |
73 | grep -q -w $CFG $TMP_FILE | |
74 | if [ $? -eq 0 ] ; then | |
75 | PREV_VAL=$(grep -w $CFG $TMP_FILE) | |
76 | NEW_VAL=$(grep -w $CFG $MERGE_FILE) | |
77 | if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then | |
78 | echo Value of $CFG is redefined by fragment $MERGE_FILE: | |
79 | echo Previous value: $PREV_VAL | |
80 | echo New value: $NEW_VAL | |
81 | echo | |
82 | fi | |
83 | sed -i "/$CFG[ =]/d" $TMP_FILE | |
84 | fi | |
85 | done | |
86 | cat $MERGE_FILE >> $TMP_FILE | |
87 | done | |
88 | ||
89 | if [ "$MAKE" = "false" ]; then | |
90 | cp $TMP_FILE .config | |
91 | echo "#" | |
92 | echo "# merged configuration written to .config (needs make)" | |
93 | echo "#" | |
94 | clean_up | |
95 | exit | |
96 | fi | |
97 | ||
98 | # Use the merged file as the starting point for: | |
99 | # alldefconfig: Fills in any missing symbols with Kconfig default | |
100 | # allnoconfig: Fills in any missing symbols with # CONFIG_* is not set | |
101 | make KCONFIG_ALLCONFIG=$TMP_FILE $ALLTARGET | |
102 | ||
103 | ||
104 | # Check all specified config values took (might have missed-dependency issues) | |
105 | for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do | |
106 | ||
107 | REQUESTED_VAL=$(sed -n "$SED_CONFIG_EXP" $TMP_FILE | grep -w -e "$CFG") | |
108 | ACTUAL_VAL=$(sed -n "$SED_CONFIG_EXP" .config | grep -w -e "$CFG") | |
109 | if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then | |
110 | echo "Value requested for $CFG not in final .config" | |
111 | echo "Requested value: $REQUESTED_VAL" | |
112 | echo "Actual value: $ACTUAL_VAL" | |
113 | echo "" | |
114 | fi | |
115 | done | |
116 | ||
117 | clean_up |