Add qemu_multiarch_testing/
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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qemu_multiarch_testing/README
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qemu_multiarch_testing/README
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How to test build using Aboriginal Linux system images.
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* Put a source tree into hdc.dir/.
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For example, this should work:
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git clone git://busybox.net/var/lib/git/busybox.git
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* Run ./make-hdc-img.sh: it will generate ext2 image file,
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hdc.img, from hdc.dir/* data. This requires root for loop mount.
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* Download and unpack, or build from source and unpack
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one or more system-image-ARCH directories into this directory
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(the one which contains this README).
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* Run: ./parallel-build-hdc-img.sh system-image-DIR1 system-image-DIR2...
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(background it if you don't want to see "Waiting to finish" thing).
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This runs build in several qemu virtual machines in parallel.
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* Observe system-image-*.log file(s) with growing log of the build.
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There is no automated detection of errors for now: you need to examine
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logs yourself.
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Log files will also contain uuencoded (or if all else fails, od -tx1'ed)
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binary, if build was successful.
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To debug a build problem in one of the sandboxes, change keep_hdb
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to "keep_hdb=true" in parallel-build-hdc-img.sh
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- this preserves system-image-ARCH/hdb.img after the build,
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so you can go into system-image-ARCH and run
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"HDB=hdb.img ./dev-environment.sh" to debug the problem.
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You can also run "./parallel-build-hdc-img.sh -s system-image-ARCH"
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- single mode, output is to screen and serial input is from keyboard.
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If hdc.dir/bin/busybox-$ARCH exists, it will be used during build
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to supply additional tools.
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For me, the following system images worked:
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system-image-armv4l
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system-image-armv4tl
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system-image-armv5l
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od is buggy on arm*:
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# echo Hello-hello-hello-hello | od -b
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0000000 110 145 154 154 157 055 150 145 154 154 157 055 150 145 154 154
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0000000 157 055 150 145 154 154 157 012
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0000000
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system-image-i686
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system-image-mips
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system-image-mipsel
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od is buggy on mips[el]:
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# echo Hello-hello-hello-hello | od -b
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0000000 110 145 154 154 157 055 150 145 154 154 157 055 150 145 154 154
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17767153361 157 055 150 145 154 154 157 012
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0000000
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system-image-x86_64
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And these did not:
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system-image-armv6l - hang on "Uncompressing Linux... done, booting the kernel"
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system-image-powerpc - hang early in kernel boot
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system-image-sparc - hang early in userspace
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system-image-m68k - my qemu doesn't like "-M q800"
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system-image-mips64 - init dies "Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000a"
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system-image-sh4 - qemu segfaults early in kernel boot
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6
qemu_multiarch_testing/extract_od_binary.sh
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qemu_multiarch_testing/extract_od_binary.sh
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#!/bin/sh
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# Converts textual result of "od -tx1 <FILE"
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# back into a binary FILE
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grep -a '^[0-7][0-7][0-7][0-7][0-7][0-7][0-7] [0-9a-f][0-9a-f] [0-9a-f][0-9a-f] [0-9a-f][0-9a-f] [0-9a-f][0-9a-f]' | busybox hexdump -R
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qemu_multiarch_testing/hdc.dir/build
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qemu_multiarch_testing/hdc.dir/build
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#!/bin/sh
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umount /mnt # optional
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test -x "bin/busybox-$HOST" && {
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echo "Found bin/busybox-$HOST, using it"
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cp -a "bin/busybox-$HOST" bin/busybox
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bin/busybox --install -s bin/
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# Supply missing stuff (e.g. bzip2):
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PATH="$PATH:$PWD/bin"
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# Override known-buggy host binaries:
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cp -af bin/od `which od`
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}
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(
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#set -e -x
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cd busybox
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make defconfig
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# Want static build
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sed 's/^.*CONFIG_STATIC.*$/CONFIG_STATIC=y/' -i .config
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# Drats, newer Aboriginal Linux has no bzip2
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bzip2 </dev/null >/dev/null || {
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sed 's/^.*CONFIG_FEATURE_COMPRESS_USAGE.*$/# CONFIG_FEATURE_COMPRESS_USAGE is not set/' -i .config
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}
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# These won't build because of toolchain/libc breakage:
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sed 's/^.*CONFIG_FEATURE_SYNC_FANCY.*$/# CONFIG_FEATURE_SYNC_FANCY is not set/' -i .config # no syncfs()
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sed 's/^.*CONFIG_FEATURE_WTMP.*$/# CONFIG_FEATURE_WTMP is not set/' -i .config
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sed 's/^.*CONFIG_FEATURE_UTMP.*$/# CONFIG_FEATURE_UTMP is not set/' -i .config
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sed 's/^.*CONFIG_FEATURE_INETD_RPC.*$/# CONFIG_FEATURE_INETD_RPC is not set/' -i .config
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sed 's/^.*CONFIG_BRCTL.*$/# CONFIG_BRCTL is not set/' -i .config
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sed 's/^.*CONFIG_IFPLUGD.*$/# CONFIG_IFPLUGD is not set/' -i .config
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make #V=1 || sh
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size busybox
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./busybox || echo "Exit code: $?"
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if uuencode TEST </dev/null >/dev/null && bzip2 </dev/null >/dev/null; then
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bzip2 <busybox | uuencode busybox.bz2
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else
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od -tx1 <busybox
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fi
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#test "x$FTP_PORT" = x ||
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# ftpput -P "$FTP_PORT" "$FTP_SERVER" strace
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) 2>&1 | tee build.log
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mount -o remount,ro /home
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sync
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sleep 1
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qemu_multiarch_testing/hdc.dir/init
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qemu_multiarch_testing/hdc.dir/init
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#!/bin/sh
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# Emit a msg to let user know this place was reached
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echo "Copying to /home"
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# Had a case where cp SEGVs, let's have diagnostics for it
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cp -a /mnt /home || { echo "cp: $?"; exit 1; }
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cd /home/mnt || { echo "cd: $?"; exit 1; }
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exec ./build
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echo "Failed to exec ./build"
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qemu_multiarch_testing/make-hdc-img.sh
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qemu_multiarch_testing/make-hdc-img.sh
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#!/bin/sh -ex
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mountpoint -q /
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[ ! -e hdc.img.dir ]
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cleanup()
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{
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trap - EXIT
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if mountpoint -q hdc.img.dir; then
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umount -d hdc.img.dir
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fi
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mountpoint -q hdc.img.dir ||
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rm -rf hdc.img.dir
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exit $@
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}
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trap 'cleanup $?' EXIT
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trap 'cleanup 1' HUP PIPE INT QUIT TERM
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size=$(du -ks hdc.dir | sed -rn 's/^([0-9]+).*/\1/p')
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[ "$size" -gt 0 ]
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rm -f hdc.img
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dd if=/dev/zero of=hdc.img count=1 bs=1024 seek=$(($size*2))
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mkfs.ext3 -q -F -b 1024 -i 4096 hdc.img
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tune2fs -c 0 -i 0 hdc.img
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mkdir hdc.img.dir
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mount -o loop hdc.img hdc.img.dir
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cp -a hdc.dir/* hdc.img.dir/
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umount -d hdc.img.dir
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qemu_multiarch_testing/parallel-build-hdc-img.sh
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qemu_multiarch_testing/parallel-build-hdc-img.sh
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#!/bin/sh
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export HDBMEGS=100
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keep_hdb=false
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build_in_dir()
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{
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cd "$1" || exit 1
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rm -f hdb.img
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nice -n10 time ./native-build.sh ../hdc.img
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$keep_hdb || rm -f hdb.img
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echo >&3 "Finished: $1"
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}
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test "$1" = "-s" && {
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dir="$2"
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# single mode: build one directory, show output
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test -d "$dir" || exit 1
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test -e "$dir/native-build.sh" || exit 1
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build_in_dir "$dir"
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exit $?
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}
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started=false
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for dir; do
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test -d "$dir" || continue
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test -e "$dir/native-build.sh" || continue
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echo "Starting: $dir"
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build_in_dir "$dir" 3>&1 </dev/null >"$dir.log" 2>&1 &
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started=true
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done
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$started || {
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echo "Give me system-image-ARCH directories on command line"
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exit 1
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}
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echo "Waiting to finish"
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wait
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echo "Done, check the logs"
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