postinst is in libatlas3-base 3.10.1-4.
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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | #! /bin/sh
set -e
update-alternatives --install /usr/lib/libblas.so.3 libblas.so.3 \
/usr/lib/atlas-base/atlas/libblas.so.3 35 \
--slave /usr/lib/libblas.so.3gf libblas.so.3gf \
/usr/lib/atlas-base/atlas/libblas.so.3
update-alternatives --install /usr/lib/liblapack.so.3 liblapack.so.3 \
/usr/lib/atlas-base/atlas/liblapack.so.3 5 \
--slave /usr/lib/liblapack.so.3gf liblapack.so.3gf \
/usr/lib/atlas-base/atlas/liblapack.so.3
# In 3.10.1-1, some symlinks were moved out of the alternatives system, and are
# now shipped as normal symlinks.
#
# However, for an unknown reason, dpkg does not re-create the libatlas.so.3gf
# symlink on upgrade. The following is a workaround for what seems to be a dpkg
# bug.
if [ "$1" = "configure" ] && [ -n "$2" ] && dpkg --compare-versions "$2" ge 3.8.4-4~exp1 && dpkg --compare-versions "$2" lt 3.10.1-1
then
ln -sf atlas-base/libatlas.so.3 /usr/lib/libatlas.so.3gf
fi
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
# Automatically added by dh_makeshlibs
if [ "$1" = "configure" ]; then
ldconfig
fi
# End automatically added section
exit 0
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