merge_config.sh 4.2 KB

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  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. clean_up() {
  23. rm -f $TMP_FILE
  24. exit
  25. }
  26. trap clean_up HUP INT TERM
  27. usage() {
  28. echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
  29. echo " -h display this help text"
  30. echo " -m only merge the fragments, do not execute the make command"
  31. echo " -n use allnoconfig instead of alldefconfig"
  32. echo " -r list redundant entries when merging fragments"
  33. echo " -O dir to put generated output files. Consider setting \$KCONFIG_CONFIG instead."
  34. }
  35. RUNMAKE=true
  36. ALLTARGET=alldefconfig
  37. WARNREDUN=false
  38. OUTPUT=.
  39. while true; do
  40. case $1 in
  41. "-n")
  42. ALLTARGET=allnoconfig
  43. shift
  44. continue
  45. ;;
  46. "-m")
  47. RUNMAKE=false
  48. shift
  49. continue
  50. ;;
  51. "-h")
  52. usage
  53. exit
  54. ;;
  55. "-r")
  56. WARNREDUN=true
  57. shift
  58. continue
  59. ;;
  60. "-O")
  61. if [ -d $2 ];then
  62. OUTPUT=$(echo $2 | sed 's/\/*$//')
  63. else
  64. echo "output directory $2 does not exist" 1>&2
  65. exit 1
  66. fi
  67. shift 2
  68. continue
  69. ;;
  70. *)
  71. break
  72. ;;
  73. esac
  74. done
  75. if [ "$#" -lt 1 ] ; then
  76. usage
  77. exit
  78. fi
  79. if [ -z "$KCONFIG_CONFIG" ]; then
  80. if [ "$OUTPUT" != . ]; then
  81. KCONFIG_CONFIG=$(readlink -m -- "$OUTPUT/.config")
  82. else
  83. KCONFIG_CONFIG=.config
  84. fi
  85. fi
  86. INITFILE=$1
  87. shift;
  88. if [ ! -r "$INITFILE" ]; then
  89. echo "The base file '$INITFILE' does not exist. Exit." >&2
  90. exit 1
  91. fi
  92. MERGE_LIST=$*
  93. SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
  94. TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
  95. echo "Using $INITFILE as base"
  96. cat $INITFILE > $TMP_FILE
  97. # Merge files, printing warnings on overridden values
  98. for MERGE_FILE in $MERGE_LIST ; do
  99. echo "Merging $MERGE_FILE"
  100. if [ ! -r "$MERGE_FILE" ]; then
  101. echo "The merge file '$MERGE_FILE' does not exist. Exit." >&2
  102. exit 1
  103. fi
  104. CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
  105. for CFG in $CFG_LIST ; do
  106. grep -q -w $CFG $TMP_FILE || continue
  107. PREV_VAL=$(grep -w $CFG $TMP_FILE)
  108. NEW_VAL=$(grep -w $CFG $MERGE_FILE)
  109. if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
  110. echo Value of $CFG is redefined by fragment $MERGE_FILE:
  111. echo Previous value: $PREV_VAL
  112. echo New value: $NEW_VAL
  113. echo
  114. elif [ "$WARNREDUN" = "true" ]; then
  115. echo Value of $CFG is redundant by fragment $MERGE_FILE:
  116. fi
  117. sed -i "/$CFG[ =]/d" $TMP_FILE
  118. done
  119. cat $MERGE_FILE >> $TMP_FILE
  120. done
  121. if [ "$RUNMAKE" = "false" ]; then
  122. cp -T -- "$TMP_FILE" "$KCONFIG_CONFIG"
  123. echo "#"
  124. echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
  125. echo "#"
  126. clean_up
  127. exit
  128. fi
  129. # If we have an output dir, setup the O= argument, otherwise leave
  130. # it blank, since O=. will create an unnecessary ./source softlink
  131. OUTPUT_ARG=""
  132. if [ "$OUTPUT" != "." ] ; then
  133. OUTPUT_ARG="O=$OUTPUT"
  134. fi
  135. # Use the merged file as the starting point for:
  136. # alldefconfig: Fills in any missing symbols with Kconfig default
  137. # allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
  138. make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
  139. # Check all specified config values took (might have missed-dependency issues)
  140. for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
  141. REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
  142. ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
  143. if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
  144. echo "Value requested for $CFG not in final .config"
  145. echo "Requested value: $REQUESTED_VAL"
  146. echo "Actual value: $ACTUAL_VAL"
  147. echo ""
  148. fi
  149. done
  150. clean_up