mkosi.build

   1 #!/bin/sh
   2 set -e
   3
   4 # This is a build script for OS image generation using mkosi (https://github.com/systemd/mkosi).
   5 # Simply invoke "mkosi" in the project directory to build an OS image.
   6
   7 # Reset the permissions of the tree. Since Meson keeps the permissions
   8 # all the way to the installed files, reset them to one of 0644 or 0755
   9 # so the files keep those permissions, otherwise details of what umask
  10 # was set at the time the git tree was cloned will leak all the way
  11 # through. Also set umask explicitly during the build.
  12 if ! mountpoint -q "$SRCDIR"; then
  13         chmod -R u+w,go-w,a+rX .
  14         umask 022
  15 fi
  16
  17 # On Fedora "ld" is (unfortunately — if you ask me) managed via
  18 # "alternatives". Since we'd like to support building images in environments
  19 # with only /usr/ around (e.g. mkosi's UsrOnly=1 option), we have the problem
  20 # that /usr/bin/ld is a symlink that points to a non-existing file in
  21 # /etc/alternative/ in this mode. Let's work around this for now by manually
  22 # redirect "ld" to "ld.bfd", i.e. circumventing the /usr/bin/ld symlink.
  23 if [ ! -x /usr/bin/ld -a -x /usr/bin/ld.bfd ] ; then
  24         mkdir -p "$HOME"/bin
  25         ln -s /usr/bin/ld.bfd "$HOME"/bin/ld
  26         PATH="$HOME/bin:$PATH"
  27 fi
  28
  29 # If mkosi.builddir/ exists mkosi will set $BUILDDIR to it, let's then use it
  30 # as out-of-tree build dir. Otherwise, let's make up our own builddir.
  31 [ -z "$BUILDDIR" ] && BUILDDIR=build
  32
  33 # Meson uses Python 3 and requires a locale with an UTF-8 character map.
  34 # Not running under UTF-8 makes the `ninja test` step break with a CodecError.
  35 # So let's ensure we're running under UTF-8.
  36 #
  37 # If our current locale already is UTF-8, then we don't need to do anything:
  38 if [ "$(locale charmap 2> /dev/null)" != "UTF-8" ] ; then
  39         # Try using C.UTF-8 locale, if available. This locale is not shipped
  40         # by upstream glibc, so it's not available in all distros.
  41         # (In particular, it's not available in Arch Linux.)
  42         if locale -a | grep -q -E "C.UTF-8|C.utf8"; then
  43                 export LC_CTYPE=C.UTF-8
  44         # Finally, try something like en_US.UTF-8, which should be
  45         # available in Arch Linux, but is not present in Debian's
  46         # minimal image in our mkosi config.
  47         elif locale -a | grep -q en_US.utf8; then
  48                 export LC_CTYPE=en_US.UTF-8
  49         else
  50                 # If nothing works, fail early.
  51                 echo "*** Could not find a valid locale that supports UTF-8. ***" >&2
  52                 exit 1
  53         fi
  54 fi
  55
  56 if [ ! -f "$BUILDDIR"/build.ninja ] ; then
  57         sysvinit_path=`realpath /etc/init.d`
  58
  59         init_path=`realpath /sbin/init 2>/dev/null`
  60         if [ -z "$init_path" ] ; then
  61             rootprefix=""
  62         else
  63             rootprefix=${init_path%/lib/systemd/systemd}
  64             rootprefix=/${rootprefix#/}
  65         fi
  66
  67         nobody_user=`id -u -n 65534 2> /dev/null`
  68         if [ "$nobody_user" != "" ] ; then
  69                 # Validate that we can translate forth and back
  70                 if [ "`id -u $nobody_user`" != 65534 ] ; then
  71                         nobody_user=""
  72                 fi
  73         fi
  74         if [ "$nobody_user" = "" ] ; then
  75                 if id -u nobody 2> /dev/null ; then
  76                         # The "nobody" user is defined already for something else, pick the Fedora name
  77                         nobody_user=nfsnobody
  78                 else
  79                         # The "nobody" user name is free, use it
  80                         nobody_user=nobody
  81                 fi
  82         fi
  83
  84         nobody_group=`id -g -n 65534 2> /dev/null`
  85         if [ "$nobody_group" != "" ] ; then
  86                 # Validate that we can translate forth and back
  87                 if [ "`id -g $nobody_group`" != 65534 ] ; then
  88                         nobody_group=""
  89                 fi
  90         fi
  91         if [ "$nobody_group" = "" ] ; then
  92                 if id -u nobody 2> /dev/null ; then
  93                         # The "nobody" group is defined already for something else, pick the Fedora name
  94                         nobody_group=nfsnobody
  95                 else
  96                         # The "nobody" group name is free, use it
  97                         nobody_group=nobody
  98                 fi
  99         fi
 100
 101         meson "$BUILDDIR" \
 102                 -D "sysvinit-path=$sysvinit_path" \
 103                 -D "rootprefix=$rootprefix" \
 104                 -D man=false \
 105                 -D "nobody-user=$nobody_user" \
 106                 -D "nobody-group=$nobody_group" \
 107                 -D translations=false \
 108                 -D version-tag="${VERSION_TAG}"
 109 fi
 110
 111 cd "$BUILDDIR"
 112 ninja "$@"
 113 if [ "$WITH_TESTS" = 1 ] ; then
 114         for id in 1 2 3; do
 115                 getent group $id > /dev/null || groupadd -g $id testgroup$id
 116         done
 117
 118         ninja test
 119 fi
 120 cd "$SRCDIR"
 121
 122 # Ubuntu Focal is stuck with meson 0.53.0.
 123 if [ "$(meson -v | cut -d . -f 2)" -gt 53 ] ; then
 124         meson install -C "$BUILDDIR" --quiet --no-rebuild --only-changed
 125 else
 126         meson install -C "$BUILDDIR" --no-rebuild --only-changed
 127 fi
 128
 129 mkdir -p "$DESTDIR"/etc
 130
 131 cat > "$DESTDIR"/etc/issue <<EOF
 132 \S (built from systemd tree)
 133 Kernel \r on an \m (\l)
 134
 135 EOF
 136
 137 # Manually update the boot loader from the one we just built
 138 mkdir -p "$DESTDIR"/boot/efi/EFI/systemd "$DESTDIR"/boot/efi/EFI/BOOT
 139 cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/boot/efi/EFI/systemd/systemd-bootx64.efi
 140 cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/boot/efi/EFI/BOOT/bootx64.efi
 141
 142 mkdir -p "$DESTDIR"/efi/EFI/systemd "$DESTDIR"/efi/EFI/BOOT
 143 cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/efi/EFI/systemd/systemd-bootx64.efi
 144 cp "$DESTDIR"/usr/lib/systemd/boot/efi/systemd-bootx64.efi "$DESTDIR"/efi/EFI/BOOT/bootx64.efi