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PROGRAM:

NAME


debian-matlab-mexhelper - helper to build Matlab extensions on Debian

SYNOPSIS


debian-matlab-mexhelper [OPTIONS] <package name> <mode>

DESCRIPTION


The is a small helper that eases building and installing MEX extensions for Matlab toolbox
packages in Debian binary packages. Because these packages cannot build-depend on Matlab
(for obvious reasons) they need to compile their extensions at installation time using a
local Matlab installation. The helper is somewhat flexible by supporting custom build,
install and clean commands, as well as source and destination directories. It also deals
with moving extensions into library directories and automatically symlinks them into the
toolbox directory.

There are two major modes: 'install' to build, install and symlink extensions (useful in
postinst) and 'clean' to remove installed extensions and symlinks (useful in prerm).

The command to build the extensions is invoked in the source directory. By default, this
is /usr/src/matlab/<package name>, but can be overridden with the --src-dir option. Any
optional 'install' (--install-cmd) and 'clean' (--clean-cmd) are invoked in the source
directory too.

Moreover, this helper will also take any installed extensions from a default installation
path /usr/share/matlab/site/m/<package name>, move them into /usr/lib/matlab/site/<package
name> and symlink back to the original location. These locations can be configured with
the --m-dir and --mex-dir options respectively. Again, this step is optional and is only
performed if a package actually installs extensions inot this location.

OPTIONS


-h

Print usage summary and option list.

--help

Print full help.

--version

Print version information and exit.

--build-cmd

Command to build the extensions in the source directory

--install-cmd

Command to install the extensions after building

--clean-cmd

Command to clean the source tree after installation. This is not the command that
is executed in 'clean' mode.

--src-dir

Directory with the extension sources. This is also the directory in which build,
install and clean commands get invoked.

--mex-dir

Target directory into which binary extensions get moved.

--m-dir

Target directory in which symlinks to binary extensions get created.

--make

Set default commands for 'build-cmd' (make), 'install-cmd' (make install
DESTDIR=$m_dir) and 'clean-cmd' (make distclean) if no specific command has been
provided via the respective options.

EXAMPLES


The following call can be used in a package's postinst script if it comes with a Matlab
script 'build_matlab.m' that builds and installs its extension into the desired locations.
The --src-dir option is used to point to a non-standard location of the extension sources.

debian-matlab-mexhelper somepackagename install
--src-dir /usr/src/dynare-matlab/mex/sources --build-cmd 'matlab -nodesktop
-nodisplay -nojvm -r build_matlab'

If a package installs extension sources into the standard location and builds its
extensions using a Makefile that support the DESTDIR for installing the built extensions
and a 'distclean' target it is sufficient to run the following.

debian-matlab-mexhelper somepackagename install --make

Otherwise it is also possible to fully customize all commands.

debian-matlab-mexhelper difficultpackage install
--build-cmd 'make -C src all toolbox MEXBIN="matlab-mex"' --install-cmd 'make
-C src install && find . ! -wholename "./src" -name "*.mex?*" -print0 | xargs -0 -I
{} cp -v --parent {} /usr/share/difficultpackage' --clean-cmd 'make -C src
distclean toolbox-distclean && find . -name "*.mex?*" -delete'

If a package uses debian-matlab-mexhelper to install extensions into the standard location
it can also be used to remove all MEX extensions and created symlinks when a package is
removed from a system. To achieve this simply put the following call into a package's
prerm script.

debian-matlab-mexhelper packagename clean

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