name: kmod
kind: chunk
configure-commands:
- rm -rf libkmod/docs
- sed -i -e'/SUBDIRS/{s/\S*doc\S*//;s/\S*man\S*//}' Makefile.am
- sed -i -e'/AC_CONFIG_FILES(\[/,/])/{/docs/d}' configure.ac
- autoreconf -fiv
- |
  ./configure --prefix="$PREFIX" --bindir="$PREFIX"/bin \
              --libdir="$PREFIX"/lib --sysconfdir=/etc \
              --without-xz --with-zlib \
              --disable-manpages --enable-python
build-commands:
- make
install-commands:
- make DESTDIR="$DESTDIR" pkgconfigdir="$PREFIX"/lib/pkgconfig install

# WARNING with the following command:
# if the staging area when kmod is built is sufficiently different to the
# staging area that kmod is included in, then these symlinks may not work.
#
# i.e. if /sbin isn't a symlink when this is built (fhs-dirs isn't included or
# doesn't symlink /sbin to /usr/bin) then we get symlinks in /sbin which point
# to ../usr/bin, but if /sbin is itself a symlink to /usr/bin, then the symlinks
# would end up in /usr/bin, which would point to ../usr/bin, which would evaluate
# to /usr/usr/bin.
#
# The alternatives to this are:
#
# 1. Use hardlinks instead, which has the problem of ssh-rsync upgrades duplicating
#    the binary
#
# 2. Use an absolute path for the symlink, which makes things interesting when
#    inspecting a chroot
#
# 3. Use a wrapper script to invoke kmod with a different name, which isn't
#    possible in busybox ash without making a temporary directory, which means
#    you need an extra process to hang around to clean that directory up.
- |
  if [ -h /sbin ]; then
    for app in modprobe lsmod rmmod insmod modinfo depmod; do
      ln -sf kmod "$DESTDIR$PREFIX/bin/$app"
    done
  else
    install -d "$DESTDIR"/sbin
    for app in modprobe lsmod rmmod insmod modinfo depmod; do
      ln -sf ../"$PREFIX"/bin/kmod "$DESTDIR/sbin/$app"
    done
  fi