postinst is in libopenmpi-dev 1.4.3-2.1ubuntu3.
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 | #!/bin/sh
set -e
update-alternatives \
--install /usr/include/mpi mpi /usr/lib/openmpi/include 40 \
--slave /usr/lib/libmpi.so libmpi.so /usr/lib/openmpi/lib/libmpi.so \
--slave /usr/lib/libmpi++.so libmpi++.so /usr/lib/openmpi/lib/libmpi_cxx.so \
--slave /usr/lib/libmpif77.so libmpif77.so /usr/lib/openmpi/lib/libmpi_f77.so \
--slave /usr/lib/libmpif90.so libmpif90.so /usr/lib/openmpi/lib/libmpi_f90.so \
--slave /usr/bin/mpicc mpicc /usr/bin/mpicc.openmpi \
--slave /usr/bin/mpic++ mpic++ /usr/bin/mpic++.openmpi \
--slave /usr/bin/mpicxx mpicxx /usr/bin/mpic++.openmpi \
--slave /usr/bin/mpiCC mpiCC /usr/bin/mpic++.openmpi \
--slave /usr/bin/mpif77 mpif77 /usr/bin/mpif77.openmpi \
--slave /usr/bin/mpif90 mpif90 /usr/bin/mpif90.openmpi \
--slave /usr/share/man/man1/mpicc.1.gz mpicc.1.gz /usr/share/man/man1/mpicc.openmpi.1.gz \
--slave /usr/share/man/man1/mpic++.1.gz mpic++.1.gz /usr/share/man/man1/mpic++.openmpi.1.gz \
--slave /usr/share/man/man1/mpicxx.1.gz mpicxx.1.gz /usr/share/man/man1/mpicxx.openmpi.1.gz \
--slave /usr/share/man/man1/mpiCC.1.gz mpiCC.1.gz /usr/share/man/man1/mpiCC.openmpi.1.gz \
--slave /usr/share/man/man1/mpif77.1.gz mpif77.1.gz /usr/share/man/man1/mpif77.openmpi.1.gz \
--slave /usr/share/man/man1/mpif90.1.gz mpif90.1.gz /usr/share/man/man1/mpif90.openmpi.1.gz
exit 0
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