mkosi.build

   1 #!/bin/sh
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   3 set -e
   4
   5 # This is a build script for OS image generation using mkosi (https://github.com/systemd/mkosi).
   6 # Simply invoke "mkosi" in the project directory to build an OS image.
   7
   8 # On Fedora "ld" is (unfortunately — if you ask me) managed via
   9 # "alternatives". Since we'd like to support building images in environments
  10 # with only /usr/ around (e.g. mkosi's UsrOnly=1 option), we have the problem
  11 # that /usr/bin/ld is a symlink that points to a non-existing file in
  12 # /etc/alternative/ in this mode. Let's work around this for now by manually
  13 # redirect "ld" to "ld.bfd", i.e. circumventing the /usr/bin/ld symlink.
  14 if [ ! -x /usr/bin/ld ] && [ -x /usr/bin/ld.bfd ]; then
  15         mkdir -p "$HOME"/bin
  16         ln -s /usr/bin/ld.bfd "$HOME"/bin/ld
  17         PATH="$HOME/bin:$PATH"
  18 fi
  19
  20 # If mkosi.builddir/ exists mkosi will set $BUILDDIR to it, let's then use it
  21 # as out-of-tree build dir. Otherwise, let's make up our own builddir.
  22 [ -z "$BUILDDIR" ] && BUILDDIR=build
  23
  24 # Meson uses Python 3 and requires a locale with an UTF-8 character map.
  25 # Not running under UTF-8 makes the `ninja test` step break with a CodecError.
  26 # So let's ensure we're running under UTF-8.
  27 #
  28 # If our current locale already is UTF-8, then we don't need to do anything:
  29 if [ "$(locale charmap 2>/dev/null)" != "UTF-8" ] ; then
  30         # Try using C.UTF-8 locale, if available. This locale is not shipped
  31         # by upstream glibc, so it's not available in all distros.
  32         # (In particular, it's not available in Arch Linux.)
  33         if locale -a | grep -q -E "C.UTF-8|C.utf8"; then
  34                 export LC_CTYPE=C.UTF-8
  35         # Finally, try something like en_US.UTF-8, which should be
  36         # available in Arch Linux, but is not present in Debian's
  37         # minimal image in our mkosi config.
  38         elif locale -a | grep -q en_US.utf8; then
  39                 export LC_CTYPE=en_US.UTF-8
  40         else
  41                 # If nothing works, fail early.
  42                 echo "*** Could not find a valid locale that supports UTF-8. ***" >&2
  43                 exit 1
  44         fi
  45 fi
  46
  47 if [ ! -f "$BUILDDIR"/build.ninja ] ; then
  48         sysvinit_path=$(realpath /etc/init.d)
  49
  50         init_path=$(realpath /sbin/init 2>/dev/null)
  51         if [ -z "$init_path" ] ; then
  52             rootprefix=""
  53         else
  54             rootprefix=${init_path%/lib/systemd/systemd}
  55             rootprefix=/${rootprefix#/}
  56         fi
  57
  58         meson "$BUILDDIR" \
  59                 -D "sysvinit-path=$sysvinit_path" \
  60                 -D "rootprefix=$rootprefix" \
  61                 -D man=false \
  62                 -D translations=false \
  63                 -D version-tag="${VERSION_TAG}"
  64 fi
  65
  66 cd "$BUILDDIR"
  67 ninja "$@"
  68 if [ "$WITH_TESTS" = 1 ] ; then
  69         for id in 1 2 3; do
  70                 getent group $id >/dev/null || groupadd -g $id testgroup$id
  71         done
  72
  73         ninja test
  74 fi
  75 cd "$SRCDIR"
  76
  77 # Ubuntu Focal is stuck with meson 0.53.0.
  78 if [ "$(meson -v | cut -d . -f 2)" -gt 53 ] ; then
  79         meson install -C "$BUILDDIR" --quiet --no-rebuild --only-changed
  80 else
  81         meson install -C "$BUILDDIR" --no-rebuild --only-changed
  82 fi
  83
  84 mkdir -p "$DESTDIR"/etc
  85
  86 cat >"$DESTDIR"/etc/issue <<EOF
  87 \S (built from systemd tree)
  88 Kernel \r on an \m (\l)
  89
  90 EOF
  91
  92 if [ -n "$IMAGE_ID" ] ; then
  93     mkdir -p "$DESTDIR"/usr/lib
  94     sed -n \
  95         -e '/^IMAGE_ID=/!p' \
  96         -e "\$aIMAGE_ID=$IMAGE_ID" <"/usr/lib/os-release" >"${DESTDIR}/usr/lib/os-release"
  97
  98     OSRELEASEFILE="$DESTDIR"/usr/lib/os-release
  99 else
 100     OSRELEASEFILE=/usr/lib/os-release
 101 fi
 102
 103
 104 if [ -n "$IMAGE_VERSION" ] ; then
 105     mkdir -p "$DESTDIR"/usr/lib
 106     sed -n \
 107         -e '/^IMAGE_VERSION=/!p' \
 108         -e "\$aIMAGE_VERSION=$IMAGE_VERSION" <$OSRELEASEFILE >"/tmp/os-release.tmp"
 109
 110     cat /tmp/os-release.tmp > "$DESTDIR"/usr/lib/os-release
 111     rm /tmp/os-release.tmp
 112 fi
 113
 114 # If $CI_BUILD is set, copy over the CI service which executes a service check
 115 # after boot and then shuts down the machine
 116 if [ -n "$CI_BUILD" ]; then
 117     mkdir -p "$DESTDIR/usr/lib/systemd/system"
 118     cp -v "$SRCDIR/test/mkosi-check-and-shutdown.service" "$DESTDIR/usr/lib/systemd/system/mkosi-check-and-shutdown.service"
 119     cp -v "$SRCDIR/test/mkosi-check-and-shutdown.sh" "$DESTDIR/usr/lib/systemd/mkosi-check-and-shutdown.sh"
 120     chmod +x "$DESTDIR/usr/lib/systemd/mkosi-check-and-shutdown.sh"
 121 fi