Packaging:Octave

= How to package Octave packages =

What is Octave?
The definition from website says:

"GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab. It may also be used as a batch-oriented language."

If you are interested in packaging Octave packages, you should check here for upstream sources:
 * The Octave Forge website

RPM macros
The following macros are defined in /etc/rpm/macros.octave in the octave 3.4.0 (Fedora 15+) package for help in packaging:

%octave_api %(octave-config -p API_VERSION || echo 0)}
 * 1) Octave binary API provided

%octshareprefix %{_datadir}/octave %octprefix %{octshareprefix}/packages %octarchprefix %{_libdir}/octave/packages
 * 1) Octave Package Directories

%octpkgdir %{octshareprefix}/%{octpkg}-%{version} %octpkglibdir %{octarchprefix}/%{octpkg}-%{version}

%octave_cmd
 * 1) Run an octave command - quietly with no startup files

%octave_pkg_build
 * 1) Build Source0 into a package tar file in a temporary location

%octave_pkg_install
 * 1) Install a package.  We use the octave pkg install command to install the
 * 2) built package into the buildroot.  We also put a note to prevent the root
 * 3) user from removing the package with the octave pkg uninstall command

%octave_pkg_preun
 * 1) preun script - we need to remove our uninstall protection and perhaps
 * 2) run the package's own uninstall script.

Naming of Octave packages
Packages of Octave packages have their own naming scheme. They should take into account the upstream name of the package. This makes a package name format of. When in doubt, use the name of the module that you type to import it in octave.

Examples:  octave-java (Octave package named java) octave-gsl (Octave package named gsl)

Limitations in the pkg function of octave (pkg.m) means that versioning of octave packages requires that the package version must have a MAJOR.MINOR.MICRO format. Failing to use this format results in octave not recognising binary package components in %prefix/libexec.

Updating the octave package database
Octave maintains a list of installed packages in /usr/share/octave/octave_packages that needs to be updated on package install and removal. This file is in an octave plain-text format.

The contents of the /usr/share/octave/packages/ directory are scanned for the follwing files when performing a pkg('rebuild') from within octave.
 * /usr/share/octave/packages/NAMEOFPACKAGE/packinfo/COPYING
 * /usr/share/octave/packages/NAMEOFPACKAGE/packinfo/DESCRIPTION

If these files are not present in any given NAMEOFPACKAGE directory, then octave will silently skip the folder and fail to index it correctly.

Octave will use the contents of octave_packages to modify its path at startup, allowing octave to find plugins.

Documentation files
All package files are installed into the octave directories.

Spec Templates for Octave packages
There are two types of Octave packages: arch-specific and noarch.

Arch specific Octave spec template
%global octpkg image

Name:          octave-%{octpkg} Version:       1.0.13 Release:       1%{?dist} Summary:       Image processing for Octave Group:         Applications/Engineering License:       GPLv2+ URL:           http://octave.sourceforge.net/image/ Source0:       http://downloads.sourceforge.net/octave/%{octpkg}-%{version}.tar.gz

BuildRequires: octave-devel

Requires:      octave(api) = %{octave_api} Requires(post): octave Requires(postun): octave Obsoletes:     octave-forge <= 20090607

%description The Octave-forge Image package provides functions for processing images. The package also provides functions for feature extraction, image statistics, spatial and geometric transformations, morphological operations, linear filtering, and much more.

%prep %setup -q -n %{octpkg}-%{version}

%build %octave_pkg_build

%install rm -rf %{buildroot} %octave_pkg_install

%post %octave_cmd pkg rebuild

%preun %octave_pkg_preun

%postun %octave_cmd pkg rebuild

%files %{octpkglibdir} %dir %{octpkgdir} %{octpkgdir}/*.m %doc %{octpkgdir}/doc-cache %{octpkgdir}/packinfo

%changelog - Initial Fedora package
 * Sat Feb 12 2011 Orion Poplawski  1.0.13-1

Noarch Octave spec template
%global octpkg actuarial

Name:          octave-%{octpkg} Version:       1.1.0 Release:       1%{?dist} Summary:       Actuarial functions for Octave Group:         Applications/Engineering License:       GPLv2+ URL:           http://octave.sourceforge.net/ Source0:       http://downloads.sourceforge.net/octave/%{octpkg}-%{version}.tar.gz BuildArch:      noarch

BuildRequires: octave-devel

Requires:      octave Requires(post): octave Requires(postun): octave Obsoletes:     octave-forge <= 20090607

%description Actuarial functions for Casualty and Property lines.

%prep %setup -q -n %{octpkg}-%{version}

%build %octave_pkg_build

%install rm -rf %{buildroot} %octave_pkg_install

%post %octave_cmd pkg rebuild

%preun %octave_pkg_preun

%postun %octave_cmd pkg rebuild

%files %dir %{octpkgdir} %{octpkgdir}/*.m %doc %{octpkgdir}/doc-cache %{octpkgdir}/packinfo

%changelog - Initial Fedora package
 * Sat Feb 12 2011 Orion Poplawski  1.1.0-1

Summary of differences between arch-specific and noarch octave packages

 * Noarch packages set
 * Don't require a specific api version
 * Noarch packages don't install anything into %{octpkglibdir}

Obsoletes notes
Packages that used to be in the octave-forge package need to have the Obsoletes line above. Packages that were not do not.