postinst is in libpetsc3.6 3.6.2.dfsg1-3ubuntu1.
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 | #!/bin/sh -e
DEB_HOST_MULTIARCH=x86_64-linux-gnu
PETSC_VERSION=3.6.2
PETSC_VERSION_NUMBER=$( echo ${PETSC_VERSION} | sed "s/\.//g" )
# use only major.minor as general soname (rather than major.minor.patch.build)
SONAME=$( echo ${PETSC_VERSION} | awk 'BEGIN { FS="."}; {print $1"."$2 }' )
# Make alternatives links
if [ "$1" = "configure" ]; then
update-alternatives --install /usr/lib/${DEB_HOST_MULTIARCH}/libpetsc.so.${SONAME} libpetsc.so.${SONAME} /usr/lib/${DEB_HOST_MULTIARCH}/libpetsc_real.so.${PETSC_VERSION} ${PETSC_VERSION_NUMBER}77 \
--slave /usr/lib/${DEB_HOST_MULTIARCH}/libpetsc.so.${PETSC_VERSION} libpetsc.so.${PETSC_VERSION} /usr/lib/${DEB_HOST_MULTIARCH}/libpetsc_real.so.${PETSC_VERSION}
fi
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