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diff --git a/scripts/test-dependencies.sh b/scripts/test-dependencies.sh
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+#!/bin/bash
+
+# Author: Martin Jansa <martin.jansa@gmail.com>
+#
+# Copyright (c) 2013 Martin Jansa <Martin.Jansa@gmail.com>
+
+# Used to detect missing dependencies or automagically
+# enabled dependencies which aren't explicitly enabled
+# or disabled. Using bash to have PIPESTATUS variable.
+
+# It does 3 builds of <target>
+# 1st to populate sstate-cache directory and sysroot
+# 2nd to rebuild each recipe with every possible
+#     dependency found in sysroot (which stays populated
+#     from 1st build
+# 3rd to rebuild each recipe only with dependencies defined
+#     in DEPENDS
+# 4th (optional) repeat build like 3rd to make sure that
+#     minimal versions of dependencies defined in DEPENDS
+#     is also enough
+
+# Global vars
+tmpdir=
+targets=
+recipes=
+buildhistory=
+buildtype=
+default_targets="world"
+default_buildhistory="buildhistory"
+default_buildtype="1 2 3 c"
+
+usage () {
+  cat << EOF
+Welcome to utility to detect missing or autoenabled dependencies.
+WARNING: this utility will completely remove your tmpdir (make sure
+         you don't have important buildhistory or persistent dir there).
+$0 <OPTION>
+
+Options:
+  -h, --help
+        Display this help and exit.
+
+  --tmpdir=<tmpdir>
+        Specify tmpdir, will use the environment variable TMPDIR if it is not specified.
+        Something like /OE/oe-core/tmp-eglibc (no / at the end).
+
+  --targets=<targets>
+        List of targets separated by space, will use the environment variable TARGETS if it is not specified.
+        It will run "bitbake <targets>" to populate sysroots.
+        Default value is "world".
+
+  --recipes=<recipes>
+        File with list of recipes we want to rebuild with minimal and maximal sysroot.
+        Will use the environment variable RECIPES if it is not specified.
+        Default value will use all packages ever recorded in buildhistory directory.
+
+  --buildhistory=<buildhistory>
+        Path to buildhistory directory, it needs to be enabled in your config,
+        because it's used to detect different dependencies and to create list
+        of recipes to rebuild when it's not specified.
+        Will use the environment variable BUILDHISTORY if it is not specified.
+        Default value is "buildhistory"
+
+  --buildtype=<buildtype>
+        There are 4 types of build:
+          1: build to populate sstate-cache directory and sysroot
+          2: build to rebuild each recipe with every possible dep
+          3: build to rebuild each recipe with minimal dependencies
+          4: build to rebuild each recipe again with minimal dependencies
+          c: compare buildhistory directories from build 2 and 3
+        Will use the environment variable BUILDTYPE if it is not specified.
+        Default value is "1 2 3 c", order is important, type 4 is optional.
+EOF
+}
+
+# Print error information and exit.
+echo_error () {
+  echo "ERROR: $1" >&2
+  exit 1
+}
+
+while [ -n "$1" ]; do
+  case $1 in
+    --tmpdir=*)
+      tmpdir=`echo $1 | sed -e 's#^--tmpdir=##' | xargs readlink -e`
+      [ -d "$tmpdir" ] || echo_error "Invalid argument to --tmpdir"
+      shift
+        ;;
+    --targets=*)
+      targets=`echo $1 | sed -e 's#^--targets="*\([^"]*\)"*#\1#'`
+      shift
+        ;;
+    --recipes=*)
+      recipes=`echo $1 | sed -e 's#^--recipes="*\([^"]*\)"*#\1#'`
+      shift
+        ;;
+    --buildhistory=*)
+      buildhistory=`echo $1 | sed -e 's#^--buildhistory="*\([^"]*\)"*#\1#'`
+      shift
+        ;;
+    --buildtype=*)
+      buildtype=`echo $1 | sed -e 's#^--buildtype="*\([^"]*\)"*#\1#'`
+      shift
+        ;;
+    --help|-h)
+      usage
+      exit 0
+        ;;
+    *)
+      echo "Invalid arguments $*"
+      echo_error "Try '$0 -h' for more information."
+        ;;
+  esac
+done
+
+# tmpdir directory, use environment variable TMPDIR
+# if it was not specified, otherwise, error.
+[ -n "$tmpdir" ] || tmpdir=$TMPDIR
+[ -n "$tmpdir" ] || echo_error "No tmpdir found!"
+[ -d "$tmpdir" ] || echo_error "Invalid tmpdir \"$tmpdir\""
+[ -n "$targets" ] || targets=$TARGETS
+[ -n "$targets" ] || targets=$default_targets
+[ -n "$recipes" ] || recipes=$RECIPES
+[ -n "$recipes" -a ! -f "$recipes" ] && echo_error "Invalid file with list of recipes to rebuild"
+[ -n "$recipes" ] || echo "All packages ever recorded in buildhistory directory will be rebuilt"
+[ -n "$buildhistory" ] || buildhistory=$BUILDHISTORY
+[ -n "$buildhistory" ] || buildhistory=$default_buildhistory
+[ -d "$buildhistory" ] || echo_error "Invalid buildhistory directory \"$buildhistory\""
+[ -n "$buildtype" ] || buildtype=$BUILDTYPE
+[ -n "$buildtype" ] || buildtype=$default_buildtype
+echo "$buildtype" | grep -v '^[1234c ]*$' && echo_error "Invalid buildtype \"$buildtype\", only some combination of 1, 2, 3, 4, c separated by space is allowed"
+
+OUTPUT_BASE=test-dependencies/`date "+%s"`
+declare -i RESULT=0
+
+build_all() {
+  echo "===== 1st build to populate sstate-cache directory and sysroot ====="
+  OUTPUT1=${OUTPUT_BASE}/${TYPE}_all
+  mkdir -p ${OUTPUT1}
+  echo "Logs will be stored in ${OUTPUT1} directory"
+  bitbake -k $targets 2>&1 | tee -a ${OUTPUT1}/complete.log
+  RESULT+=${PIPESTATUS[0]}
+  grep "ERROR: Task.*failed" ${OUTPUT1}/complete.log > ${OUTPUT1}/failed-tasks.log
+  cat ${OUTPUT1}/failed-tasks.log | sed 's@.*/@@g; s@_.*@@g; s@\.bb, .*@@g' | sort -u > ${OUTPUT1}/failed-recipes.log
+}
+
+build_every_recipe() {
+  if [ "${TYPE}" = "2" ] ; then
+    echo "===== 2nd build to rebuild each recipe with every possible dep ====="
+    OUTPUT_MAX=${OUTPUT_BASE}/${TYPE}_max
+    OUTPUTB=${OUTPUT_MAX}
+  else
+    echo "===== 3rd or 4th build to rebuild each recipe with minimal dependencies ====="
+    OUTPUT_MIN=${OUTPUT_BASE}/${TYPE}_min
+    OUTPUTB=${OUTPUT_MIN}
+  fi
+
+  mkdir -p ${OUTPUTB} ${OUTPUTB}/failed ${OUTPUTB}/ok
+  echo "Logs will be stored in ${OUTPUTB} directory"
+  if [ -z "$recipes" ]; then
+    ls -d $buildhistory/packages/*/* | xargs -n 1 basename | sort -u > ${OUTPUTB}/recipe.list
+    recipes=${OUTPUTB}/recipe.list
+  fi
+  if [ "${TYPE}" != "2" ] ; then
+    echo "!!!Removing tmpdir \"$tmpdir\"!!!"
+    rm -rf $tmpdir/deploy $tmpdir/pkgdata $tmpdir/sstate-control $tmpdir/stamps $tmpdir/sysroots $tmpdir/work $tmpdir/work-shared 2>/dev/null
+  fi
+  i=1
+  count=`cat $recipes ${OUTPUT1}/failed-recipes.log | sort -u | wc -l`
+  for recipe in `cat $recipes ${OUTPUT1}/failed-recipes.log | sort -u`; do
+    echo "Building recipe: ${recipe} ($i/$count)"
+    declare -i RECIPE_RESULT=0
+    bitbake -c cleansstate ${recipe} > ${OUTPUTB}/${recipe}.log 2>&1;
+    RECIPE_RESULT+=$?
+    bitbake ${recipe} >> ${OUTPUTB}/${recipe}.log 2>&1;
+    RECIPE_RESULT+=$?
+    if [ "${RECIPE_RESULT}" != "0" ] ; then
+      RESULT+=${RECIPE_RESULT}
+      mv ${OUTPUTB}/${recipe}.log ${OUTPUTB}/failed/
+      grep "ERROR: Task.*failed"  ${OUTPUTB}/failed/${recipe}.log | tee -a ${OUTPUTB}/failed-tasks.log
+      grep "ERROR: Task.*failed"  ${OUTPUTB}/failed/${recipe}.log | sed 's@.*/@@g; s@_.*@@g; s@\.bb, .*@@g' >> ${OUTPUTB}/failed-recipes.log
+      # and append also ${recipe} in case the failed task was from some dependency
+      echo ${recipe} >> ${OUTPUTB}/failed-recipes.log
+    else
+      mv ${OUTPUTB}/${recipe}.log ${OUTPUTB}/ok/
+    fi
+    if [ "${TYPE}" != "2" ] ; then
+      rm -rf $tmpdir/deploy $tmpdir/pkgdata $tmpdir/sstate-control $tmpdir/stamps $tmpdir/sysroots $tmpdir/work $tmpdir/work-shared 2>/dev/null
+    fi
+    i=`expr $i + 1`
+  done
+  echo "Copying buildhistory/packages to ${OUTPUTB}"
+  cp -ra $buildhistory/packages ${OUTPUTB}
+  # This will be usefull to see which library is pulling new dependency
+  echo "Copying do_package logs to ${OUTPUTB}/do_package/"
+  mkdir ${OUTPUTB}/do_package
+  find $tmpdir/work/ -name log.do_package 2>/dev/null| while read f; do
+    # pn is 3 levels back, but we don't know if there is just one log per pn (only one arch and version)
+    # dest=`echo $f | sed 's#^.*/\([^/]*\)/\([^/]*\)/\([^/]*\)/log.do_package#\1#g'`
+    dest=`echo $f | sed "s#$tmpdir/work/##g; s#/#_#g"`
+    cp $f ${OUTPUTB}/do_package/$dest
+  done
+}
+
+compare_deps() {
+  # you can run just compare task with command like this
+  # OUTPUT_BASE=test-dependencies/1373140172 \
+  # OUTPUT_MAX=${OUTPUT_BASE}/2_max \
+  # OUTPUT_MIN=${OUTPUT_BASE}/3_min \
+  # openembedded-core/scripts/test-dependencies.sh --tmpdir=tmp-eglibc --targets=glib-2.0 --recipes=recipe_list --buildtype=c
+  echo "===== Compare dependencies recorded in \"${OUTPUT_MAX}\" and \"${OUTPUT_MIN}\" ====="
+  [ -n "${OUTPUTC}" ] || OUTPUTC=${OUTPUT_BASE}/comp
+  mkdir -p ${OUTPUTC}
+  OUTPUT_FILE=${OUTPUTC}/dependency-changes
+  echo "Differences will be stored in ${OUTPUT_FILE}, dot is shown for every 100 of checked packages"
+  echo > ${OUTPUT_FILE}
+
+  [ -d ${OUTPUT_MAX} ] || echo_error "Directory with output from build 2 \"${OUTPUT_MAX}\" does not exist"
+  [ -d ${OUTPUT_MIN} ] || echo_error "Directory with output from build 3 \"${OUTPUT_MIN}\" does not exist"
+  [ -d ${OUTPUT_MAX}/packages/ ] || echo_error "Directory with packages from build 2 \"${OUTPUT_MAX}/packages/\" does not exist"
+  [ -d ${OUTPUT_MIN}/packages/ ] || echo_error "Directory with packages from build 3 \"${OUTPUT_MIN}/packages/\" does not exist"
+  i=0
+  find ${OUTPUT_MAX}/packages/ -name latest | sed "s#${OUTPUT_MAX}/##g" | while read pkg; do
+    max_pkg=${OUTPUT_MAX}/${pkg}
+    min_pkg=${OUTPUT_MIN}/${pkg}
+    # pkg=packages/armv5te-oe-linux-gnueabi/libungif/libungif/latest
+    recipe=`echo "${pkg}" | sed 's#packages/[^/]*/\([^/]*\)/\([^/]*\)/latest#\1#g'`
+    package=`echo "${pkg}" | sed 's#packages/[^/]*/\([^/]*\)/\([^/]*\)/latest#\2#g'`
+    if [ ! -f "${min_pkg}" ] ; then
+      echo "ERROR: ${recipe}: ${package} package isn't created when building with minimal dependencies?" | tee -a ${OUTPUT_FILE}
+      echo ${recipe} >> ${OUTPUTC}/failed-recipes.log
+      continue
+    fi
+    # strip version information in parenthesis
+    max_deps=`grep "^RDEPENDS = " ${max_pkg} | sed 's/^RDEPENDS = / /g; s/$/ /g; s/([^(]*)//g'`
+    min_deps=`grep "^RDEPENDS = " ${min_pkg} | sed 's/^RDEPENDS = / /g; s/$/ /g; s/([^(]*)//g'`
+    if [ "$i" = 100 ] ; then
+      echo -n "." # cheap progressbar
+      i=0
+    fi
+    if [ "${max_deps}" = "${min_deps}" ] ; then
+      # it's annoying long, but at least it's showing some progress, warnings are grepped at the end
+      echo "NOTE: ${recipe}: ${package} rdepends weren't changed" >> ${OUTPUT_FILE}
+    else
+      missing_deps=
+      for dep in ${max_deps}; do
+        if ! echo "${min_deps}" | grep -q " ${dep} " ; then
+          missing_deps="${missing_deps} ${dep}"
+          echo # to get rid of dots on last line
+          echo "WARN: ${recipe}: ${package} rdepends on ${dep}, but it isn't a build dependency?" | tee -a ${OUTPUT_FILE}
+        fi
+      done
+      if [ -n "${missing_deps}" ] ; then
+        echo ${recipe} >> ${OUTPUTC}/failed-recipes.log
+      fi
+    fi
+    i=`expr $i + 1`
+  done
+  echo # to get rid of dots on last line
+  echo "Found differences: "
+  grep "^WARN: " ${OUTPUT_FILE} | tee ${OUTPUT_FILE}.warn.log
+  echo "Found errors: "
+  grep "^ERROR: " ${OUTPUT_FILE} | tee ${OUTPUT_FILE}.error.log
+  RESULT+=`cat ${OUTPUT_FILE}.warn.log | wc -l`
+  RESULT+=`cat ${OUTPUT_FILE}.error.log | wc -l`
+}
+
+for TYPE in $buildtype; do
+  case ${TYPE} in
+    1) build_all;;
+    2) build_every_recipe;;
+    3) build_every_recipe;;
+    4) build_every_recipe;;
+    c) compare_deps;;
+    *) echo_error "Invalid buildtype \"$TYPE\""
+  esac
+done
+
+cat ${OUTPUT_BASE}/*/failed-recipes.log | sort -u >> ${OUTPUT_BASE}/failed-recipes.log
+
+if [ "${RESULT}" != "0" ] ; then
+  echo "ERROR: ${RESULT} issues were found in these recipes: `cat ${OUTPUT_BASE}/failed-recipes.log | xargs`"
+fi
+
+echo "INFO: Output written in: ${OUTPUT_BASE}"
+exit ${RESULT}