systemd/mkosi.build
Daan De Meyer 2234c6a094 mkosi: Use --only-changed meson option when installing
Recently, mkosi gained support for specifying an --install-directory
option to save the contents of the install directory between bulids.
By enabling the --only-changed meson install option, meson won't
overwrite the contents of files that haven't changed since the last
build when using --install-directory.
2020-12-19 16:16:07 +00:00

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#!/bin/sh
set -e
# This is a build script for OS image generation using mkosi (https://github.com/systemd/mkosi).
# Simply invoke "mkosi" in the project directory to build an OS image.
# Reset the permissions of the tree. Since Meson keeps the permissions
# all the way to the installed files, reset them to one of 0644 or 0755
# so the files keep those permissions, otherwise details of what umask
# was set at the time the git tree was cloned will leak all the way
# through. Also set umask explicitly during the build.
chmod -R u+w,go-w,a+rX .
umask 022
# If mkosi.builddir/ exists mkosi will set $BUILDDIR to it, let's then use it
# as out-of-tree build dir. Otherwise, let's make up our own builddir.
[ -z "$BUILDDIR" ] && BUILDDIR=build
# Meson uses Python 3 and requires a locale with an UTF-8 character map.
# Not running under UTF-8 makes the `ninja test` step break with a CodecError.
# So let's ensure we're running under UTF-8.
#
# If our current locale already is UTF-8, then we don't need to do anything:
if [ "$(locale charmap 2> /dev/null)" != "UTF-8" ] ; then
# Try using C.UTF-8 locale, if available. This locale is not shipped
# by upstream glibc, so it's not available in all distros.
# (In particular, it's not available in Arch Linux.)
if locale -a | grep -q -E "C.UTF-8|C.utf8"; then
export LC_CTYPE=C.UTF-8
# Finally, try something like en_US.UTF-8, which should be
# available in Arch Linux, but is not present in Debian's
# minimal image in our mkosi config.
elif locale -a | grep -q en_US.utf8; then
export LC_CTYPE=en_US.UTF-8
else
# If nothing works, fail early.
echo "*** Could not find a valid locale that supports UTF-8. ***" >&2
exit 1
fi
fi
if [ ! -f "$BUILDDIR"/build.ninja ] ; then
sysvinit_path=`realpath /etc/init.d`
init_path=`realpath /sbin/init 2>/dev/null`
if [ -z "$init_path" ] ; then
rootprefix=""
else
rootprefix=${init_path%/lib/systemd/systemd}
rootprefix=/${rootprefix#/}
fi
nobody_user=`id -u -n 65534 2> /dev/null`
if [ "$nobody_user" != "" ] ; then
# Validate that we can translate forth and back
if [ "`id -u $nobody_user`" != 65534 ] ; then
nobody_user=""
fi
fi
if [ "$nobody_user" = "" ] ; then
if id -u nobody 2> /dev/null ; then
# The "nobody" user is defined already for something else, pick the Fedora name
nobody_user=nfsnobody
else
# The "nobody" user name is free, use it
nobody_user=nobody
fi
fi
nobody_group=`id -g -n 65534 2> /dev/null`
if [ "$nobody_group" != "" ] ; then
# Validate that we can translate forth and back
if [ "`id -g $nobody_group`" != 65534 ] ; then
nobody_group=""
fi
fi
if [ "$nobody_group" = "" ] ; then
if id -u nobody 2> /dev/null ; then
# The "nobody" group is defined already for something else, pick the Fedora name
nobody_group=nfsnobody
else
# The "nobody" group name is free, use it
nobody_group=nobody
fi
fi
meson "$BUILDDIR" -D "sysvinit-path=$sysvinit_path" -D "rootprefix=$rootprefix" -D man=false -D "nobody-user=$nobody_user" -D "nobody-group=$nobody_group"
fi
ninja -C "$BUILDDIR" all
if [ "$WITH_TESTS" = 1 ] ; then
for id in 1 2 3; do
groupadd -g $id testgroup$id || :
done
ninja -C "$BUILDDIR" test
fi
# Ubuntu Focal is stuck with meson 0.53.0.
if [ "$(meson -v | cut -d . -f 2)" -gt 53 ] ; then
meson install -C "$BUILDDIR" --quiet --no-rebuild --only-changed
else
meson install -C "$BUILDDIR" --no-rebuild --only-changed
fi
mkdir -p "$DESTDIR"/etc
cat > "$DESTDIR"/etc/issue <<EOF
\S (built from systemd tree)
Kernel \r on an \m (\l)
EOF
# Manually update the boot loader from the one we just built
mkdir -p "$DESTDIR"/boot/efi/EFI/systemd "$DESTDIR"/boot/efi/EFI/BOOT
cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/boot/efi/EFI/systemd/systemd-bootx64.efi
cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/boot/efi/EFI/BOOT/bootx64.efi
mkdir -p "$DESTDIR"/efi/EFI/systemd "$DESTDIR"/efi/EFI/BOOT
cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/efi/EFI/systemd/systemd-bootx64.efi
cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/efi/EFI/BOOT/bootx64.efi