4b5f7214 |
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 |