tools: add script to verify non-conditional config fragments
Add a script which can be used to verify that the non-conditional
config fragments are consistent, i.e. none of them disappear when
merged into an an allnoconfig.
Change-Id: I390823ead7ca5540f969a73e641855b8d9f55008
Signed-off-by: Steve Muckle <smuckle@google.com>
diff --git a/tools/check_fragments.sh b/tools/check_fragments.sh
new file mode 100755
index 0000000..64f17e2
--- /dev/null
+++ b/tools/check_fragments.sh
@@ -0,0 +1,104 @@
+#!/bin/bash
+
+RETVAL=0
+ARCHES="arm64 arm x86"
+if [ -z "$ANDROID_BUILD_TOP" ]; then
+ echo "ANDROID_BUILD_TOP not set, exiting"
+ exit 1
+fi
+AFRAGS="$ANDROID_BUILD_TOP/kernel/configs"
+KERNEL_VERSIONS=`ls -d $AFRAGS/android-* | xargs -n 1 basename`
+
+check_fragment()
+{
+ ERRORS=0
+
+ while read line; do
+ grep -q "$line" .config
+ if [ $? -ne 0 ]
+ then
+ echo "Error, $line not found in merged config."
+ ERRORS=1
+ fi
+ done < <(grep -v -E "^# " $1)
+
+ if [ $ERRORS -ne 0 ]
+ then
+ echo "Errors encountered while checking $1"
+ RETVAL=1
+ else
+ echo "Fragment $1 is okay"
+ fi
+ echo ""
+}
+
+check_arches()
+{
+ for arch in $ARCHES; do
+ rm .config
+ make ARCH=$arch allnoconfig
+ FRAGMENTS="$AFRAGS/$version/android-base.config \
+ $AFRAGS/$version/android-recommended.config"
+ if [ -f $AFRAGS/$version/android-base-$arch.config ]; then
+ FRAGMENTS="$FRAGMENTS $AFRAGS/$version/android-base-$arch.config"
+ fi
+ if [ -f $AFRAGS/$version/android-recommended-$arch.config ]; then
+ FRAGMENTS="$FRAGMENTS $AFRAGS/$version/android-recommended-$arch.config"
+ fi
+ ARCH=$arch scripts/kconfig/merge_config.sh .config $FRAGMENTS &> /dev/null
+ for f in $FRAGMENTS; do
+ check_fragment $f
+ done
+ done
+}
+
+check_configs()
+{
+ for version in $KERNEL_VERSIONS; do
+ echo "Changing to $KERNEL_PATH"
+ cd $KERNEL_PATH
+ git checkout $version
+ check_arches
+ done
+}
+
+show_help()
+{
+ cat << EOF
+Usage: ${0##*/} [-h] [-a arches] [-v versions] -k path-to-kernel
+Check that the kernel config fragments are consistent with the Kconfig files
+in the given kernel versions. This requires an android common kernel repo to
+be checked out and made available to this script via the -k option or the
+KERNEL_PATH environment variable. Note this script does not verify the
+configs in the conditional XML fragments.
+
+ -h display this help and exit
+ -a arches quote-enclosed whitespace separated list of
+ architectures to check, valid architectures are
+ arm64, arm, and x86
+ -k kernel path to android common kernel repo
+ -v versions quote-enclosed whitespace separated list of
+ kernel versions to check (android-x.y)
+EOF
+}
+
+OPTIND=1
+while getopts "h?a:v:k:" opt; do
+ case "$opt" in
+ h|\?)
+ show_help
+ exit 0
+ ;;
+ a)
+ ARCHES="$OPTARG"
+ ;;
+ v)
+ KERNEL_VERSIONS="$OPTARG"
+ ;;
+ k)
+ KERNEL_PATH="${OPTARG/#\~/$HOME}"
+ ;;
+ esac
+done
+
+check_configs
