As package size changes are a continuous topic on the mailing list this
scripts helps developers to compare their local package modifications
against latest upstream.
The script downloads the latest package indexes based on env variables
or the `.config` file. The script compares the actual installed size
(data.tar.gz) or the IPK package size.
An example output is found below:
```
user@dawn:~/src/openwrt/openwrt$ ./scripts/size_compare.sh
Compare packages of ath79/tiny/mips_24kc:
dropbear busybox iw ubus
Checking installed size
Fetching latest package indexes...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 80634 100 80634 0 0 33499 0 0:00:02 0:00:02 --:--:-- 33485
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 54082 100 54082 0 0 24252 0 0:00:02 0:00:02 --:--:-- 24252
Comparing package sizes...
Change Local Package
611B 208715B busybox
39B 5612B ubus
-42B 34940B iw
-14916B 89265B dropbear
```
I plan to integrate this script into the CI so we have a summary how
sizes change over different architectures.
Signed-off-by: Paul Spooren <m...@aparcar.org>
---
scripts/size_compare.sh | 117 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 117 insertions(+)
create mode 100755 scripts/size_compare.sh
diff --git a/scripts/size_compare.sh b/scripts/size_compare.sh
new file mode 100755
index 0000000000..b310a085a4
--- /dev/null
+++ b/scripts/size_compare.sh
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) 2020 Paul Spooren <m...@aparcar.org>
+#
+###
+### size_compare - compare size of OpenWrt packages against upstream
+###
+### The script compares locally compiled package with the package indexes
+### available upstream. This way the storage impact of optimizations or
+### feature modifiactions is easy to see.
+###
+### If no environmental variables are set the scritp reads the current
+### .config file. The evaluated env variables are the following:
+###
+### TARGET SUBTARGET ARCH PACKAGES BIN_DIR BASE_URL CHECK_INSTALLED
+###
+### Usage:
+### ./scripts/size_compare.sh
+###
+### Options:
+### -p --package-size Check IPK package size and not installed size
+### -h --help This message
+
+CONFIG_TARGET=$(sed -n 's/^CONFIG_TARGET_BOARD="\(.*\)"$/\1/p' .config)
+CONFIG_SUBTARGET=$(sed -n 's/^CONFIG_TARGET_SUBTARGET="\(.*\)"$/\1/p' .config)
+CONFIG_ARCH=$(sed -n 's/^CONFIG_TARGET_ARCH_PACKAGES="\(.*\)"$/\1/p' .config)
+CONFIG_PACKAGES=$(sed -n 's/^CONFIG_PACKAGE_\(.*\)=y$/\1/p' .config | tr '\n'
' ')
+CONFIG_BIN_DIR=$(sed -n 's/^CONFIG_BINARY_DIR="\(.*\)"$/\1/p' .config)
+
+TARGET=${TARGET:-$CONFIG_TARGET}
+SUBTARGET=${SUBTARGET:-$CONFIG_SUBTARGET}
+ARCH=${ARCH:-$CONFIG_ARCH}
+PACKAGES=${PACKAGES:-$CONFIG_PACKAGES}
+BIN_DIR=${CONFIG_BIN_DIR:-./bin}
+BASE_URL="${BASE_URL:-https://downloads.openwrt.org/snapshots}";
+CHECK_INSTALLED="${CHECK_INSTALLED:-y}"
+
+TARGET_URL="$BASE_URL/targets/$TARGET/$SUBTARGET/packages/Packages.gz"
+PACKAGES_URL="$BASE_URL/packages/$ARCH/base/Packages.gz"
+
+help() {
+ sed -rn 's/^### ?//;T;p' "$0"
+}
+
+package_size () {
+ FOUND_PACKAGE=
+ if [ -z "$CHECK_INSTALLED" ]; then
+ SEARCH_PATTERN="Size"
+ else
+ SEARCH_PATTERN="Installed-Size"
+ fi
+ while IFS= read -r line; do
+ if [ "$line" = "Package: $2" ]; then
+ FOUND_PACKAGE=y
+ fi
+ if [ -n "$FOUND_PACKAGE" ]; then
+ case $line in
+ "$SEARCH_PATTERN"*)
+ echo "$line" | cut -d ' ' -f 2
+ break
+ ;;
+ esac
+ fi
+ done < "$1"
+}
+
+compare_sizes () {
+ for PACKAGE in $PACKAGES; do
+ if [ "$PACKAGE" = "libc" ]; then
+ continue
+ fi
+ PACKAGE_FILE=$(find "$BIN_DIR/packages/$ARCH/"
"$BIN_DIR/targets/$TARGET/$SUBTARGET/" -name "${PACKAGE}_*.ipk")
+ if [ -z "$PACKAGE_FILE" ]; then
+ continue
+ fi
+ if [ -z "$CHECK_INSTALLED" ]; then
+ SIZE_LOCAL=$(stat -c '%s' "$PACKAGE_FILE")
+ else
+ SIZE_LOCAL=$(tar tzvf "$PACKAGE_FILE" | grep
data.tar.gz | awk '{ print $3 }')
+ fi
+ SIZE_UPSTREAM=$(package_size "$TMP_INDEX" "$PACKAGE")
+ SIZE_DIFF="$((SIZE_LOCAL-SIZE_UPSTREAM))"
+ echo "${SIZE_DIFF}B ${SIZE_LOCAL}B $PACKAGE"
+ done
+}
+
+if [ "$1" = "-h" ]; then
+ help
+ exit 0
+fi
+
+if [ "$1" = "-p" ]; then
+ CHECK_INSTALLED=
+fi
+
+echo "Compare packages of $TARGET/$SUBTARGET/$ARCH":
+echo "$PACKAGES"
+echo
+
+if [ -z "$CHECK_INSTALLED" ]; then
+ echo "Checking IPK package size"
+else
+ echo "Checking installed size"
+fi
+echo
+
+echo "Fetching latest package indexes..."
+TMP_INDEX=$(mktemp /tmp/size_compare_package_index.XXXXXX)
+curl "$TARGET_URL" | gzip -d > "$TMP_INDEX" || exit 1
+curl "$PACKAGES_URL" | gzip -d >> "$TMP_INDEX" || exit 1
+echo
+
+echo "Comparing package sizes..."
+echo "Change Local Package"
+compare_sizes | sort -n -r
+
+rm "$TMP_INDEX"
--
2.25.1
_______________________________________________
openwrt-devel mailing list
openwrt-devel@lists.openwrt.org
https://lists.openwrt.org/mailman/listinfo/openwrt-devel
