Eric Lee / linux-smarc-t335x-v3.2

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Commit 8e54701ea85b0ab0971637825a628f5aa2b678a4

Authored by Andi Kleen
Committed by Sam Ravnborg
1 parent 4f628248a5
Exists in master and in 4 other branches v3.2_AM335xPSP_04.06.00.11, v3.2_NEWT335xPSP_04.06.00.11, v3.2_SBC_SMARTMEN, v3.2_SMARCT335xPSP_04.06.00.11

kconfig: add script to manipulate .config files on the command line 

I often change single options in .config files. Instead of using
an editor or one of the frontends it's convenient to do this from
the command line. It's also useful to do from automated build scripts
when building different variants from a base config file.

I extracted most of the CONFIG manipulation code from one of my
build scripts into a new shell script scripts/config

The script is not integrated with the normal Kconfig machinery
and doesn't do any checking against Kconfig files, but just manipulates
that text format. This is always done at make time anyways.

I believe this script would be a useful standard addition for scripts/*

Sample usage:

./scripts/config --disable smp
Disable SMP in .config file

./scripts/config --file otherdir/.config --module e1000e
Enable E1000E as module in otherdir/.config

./scripts/config --state smp
y
Check state of config option CONFIG_SMP

After merging into git please make scripts/config executable

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Showing 1 changed file with 150 additions and 0 deletions Side-by-side Diff

  1 +#!/bin/bash
  2 +# Manipulate options in a .config file from the command line
  3 +
  4 +usage() {
  5 + cat >&2 <<EOL
  6 +Manipulate options in a .config file from the command line.
  7 +Usage:
  8 +config options command ...
  9 +commands:
  10 + --enable|-e option Enable option
  11 + --disable|-d option Disable option
  12 + --module|-m option Turn option into a module
  13 + --state|-s option Print state of option (n,y,m,undef)
  14 +
  15 + --enable-after|-E beforeopt option
  16 + Enable option directly after other option
  17 + --disable-after|-D beforeopt option
  18 + Disable option directly after other option
  19 + --module-after|-M beforeopt option
  20 + Turn option into module directly after other option
  21 +
  22 + commands can be repeated multiple times
  23 +
  24 +options:
  25 + --file .config file to change (default .config)
  26 +
  27 +config doesn't check the validity of the .config file. This is done at next
  28 + make time.
  29 +The options need to be already in the file before they can be changed,
  30 +but sometimes you can cheat with the --*-after options.
  31 +EOL
  32 + exit 1
  33 +}
  34 +
  35 +checkarg() {
  36 + ARG="$1"
  37 + if [ "$ARG" = "" ] ; then
  38 + usage
  39 + fi
  40 + case "$ARG" in
  41 + CONFIG_*)
  42 + ARG="${ARG/CONFIG_/}"
  43 + ;;
  44 + esac
  45 + ARG="`echo $ARG | tr a-z A-Z`"
  46 +}
  47 +
  48 +replace() {
  49 + sed -i -e "$@" $FN
  50 +}
  51 +
  52 +if [ "$1" = "--file" ]; then
  53 + FN="$2"
  54 + if [ "$FN" = "" ] ; then
  55 + usage
  56 + fi
  57 + shift
  58 + shift
  59 +else
  60 + FN=.config
  61 +fi
  62 +
  63 +while [ "$1" != "" ] ; do
  64 + CMD="$1"
  65 + shift
  66 + case "$CMD" in
  67 + --enable|-e)
  68 + checkarg "$1"
  69 + replace "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
  70 + shift
  71 + ;;
  72 +
  73 + --disable|-d)
  74 + checkarg "$1"
  75 + replace "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
  76 + shift
  77 + ;;
  78 +
  79 + --module|-m)
  80 + checkarg "$1"
  81 + replace "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
  82 + -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
  83 + shift
  84 + ;;
  85 +
  86 + --state|-s)
  87 + checkarg "$1"
  88 + if grep -q "# CONFIG_$ARG is not set" $FN ; then
  89 + echo n
  90 + else
  91 + V="$(grep "^CONFIG_$ARG=" $FN)"
  92 + if [ $? != 0 ] ; then
  93 + echo undef
  94 + else
  95 + V="${V/CONFIG_$ARG=/}"
  96 + V="${V/\"/}"
  97 + echo "$V"
  98 + fi
  99 + fi
  100 + shift
  101 + ;;
  102 +
  103 + --enable-after|-E)
  104 + checkarg "$1"
  105 + A=$ARG
  106 + checkarg "$2"
  107 + B=$ARG
  108 + replace "/CONFIG_$A=[my]/aCONFIG_$B=y" \
  109 + -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=y" \
  110 + -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/"
  111 + shift
  112 + shift
  113 + ;;
  114 +
  115 + --disable-after|-D)
  116 + checkarg "$1"
  117 + A=$ARG
  118 + checkarg "$2"
  119 + B=$ARG
  120 + replace "/CONFIG_$A=[my]/a# CONFIG_$B is not set" \
  121 + -e "/# CONFIG_$ARG is not set/a/# CONFIG_$ARG is not set" \
  122 + -e "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/"
  123 + shift
  124 + shift
  125 + ;;
  126 +
  127 + --module-after|-M)
  128 + checkarg "$1"
  129 + A=$ARG
  130 + checkarg "$2"
  131 + B=$ARG
  132 + replace "/CONFIG_$A=[my]/aCONFIG_$B=m" \
  133 + -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=m" \
  134 + -e "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \
  135 + -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/"
  136 + shift
  137 + shift
  138 + ;;
  139 +
  140 + # undocumented because it ignores --file (fixme)
  141 + --refresh)
  142 + yes "" | make oldconfig
  143 + ;;
  144 +
  145 + *)
  146 + usage
  147 + ;;
  148 + esac
  149 +done