postinst is in dpkg-cross 2.6.11ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
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# postinst script for dpkg-cross
#
# see: dh_installdeb(1)
set -e
# summary of how this script can be called:
# * <postinst> `configure' <most-recently-configured-version>
# * <old-postinst> `abort-upgrade' <new version>
# * <conflictor's-postinst> `abort-remove' `in-favour' <package>
# <new-version>
# * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
# <failed-install-package> <version> `removing'
# <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
#
# quoting from the policy:
# Any necessary prompting should almost always be confined to the
# post-installation script, and should be protected with a conditional
# so that unnecessary prompting doesn't happen if a package's
# installation fails and the `postinst' is called with `abort-upgrade',
# `abort-remove' or `abort-deconfigure'.
diverted="dpkg-buildpackage dpkg-shlibdeps"
case "$1" in
configure)
# Remove diversion of dh_strip left from older versions of dpkg-cross
if dpkg-divert --list /usr/bin/dh_strip | grep -q dpkg-cross; then
# For some reason, dh_strip from older version of package is still
# there at this point. Looks like dpkg does not delete file from
# older version of a package if that file diverts another file ..
# This causes funny things such as #237511 that don't seem to have
# a good solution. Looks that the only way to make a sane upgrade
# is to delete the file here - which is bad, I know, but IMHO
# it's better than dpkg errors.
test -e /usr/bin/dh_strip && test -e /usr/bin/dh_strip.orig &&
rm -f /usr/bin/dh_strip
dpkg-divert --package dpkg-cross --remove --rename \
--divert /usr/bin/dh_strip.orig \
/usr/bin/dh_strip
fi
# dpkg-divert --package wibble --rename --remove /usr/bin/example
for prog in $diverted; do
if dpkg-divert --list /usr/bin/$prog | grep -q dpkg-cross; then
dpkg-divert --package dpkg-cross --rename --remove \
/usr/bin/$prog
fi
done
# Source debconf library.
. /usr/share/debconf/confmodule
db_get dpkg-cross/default-arch
if [ "$RET" = "None" ]; then
sed -e s/#*default_arch\ =\ .*/#default_arch\ =\ / \
/etc/dpkg-cross/cross-compile.sample \
> /etc/dpkg-cross/cross-compile
else
sed -e s/#*default_arch\ =\ .*/default_arch\ =\ $RET/ \
/etc/dpkg-cross/cross-compile.sample \
> /etc/dpkg-cross/cross-compile
fi
db_stop
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "postinst called with unknown argument \`$1'" >&2
exit 1
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
exit 0
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