The current IPP Linux 2.6.22 based bootcd's and stage 4 spec files were based on the Gentoo releng specs fetched from ​svn://anonsvn.gentoo.org/releng/trunk/releases/2007.0/specs/amd64 . They can be retrieved from the IPP svn tree as:

svn co http://svn.pan-starrs.ifa.hawaii.edu/repo/ipp/trunk/catalyst/2007.0-specs/

New version(s) of the .spec are generated for each Gentoo 20XX.X release so these will need to be updated from time to time. Unfortunately, with the move from Catalyst 1.x -> 2.x there is no long any decent documentation ​http://www.gentoo.org/proj/en/releng/catalyst/index.xml. The .spec files are fairly self explanatory and the Gentoo releng mail list is the place to ask questions ​http://archives.gentoo.org/gentoo-releng/.

The procedure to build the boot cd is:

catalyst -s 2007.0
catalyst -f installcd-stage1-minimal.spec
catalyst -f installcd-stage2-minimal.spec

The stage 4 build procedure is:

catalyst -s 2007.0
catalyst -f stage1.spec
catalyst -f stage2.spec
catalyst -f stage3.spec
catalyst -f stage4.spec

Note that the name of portage snapshot generated with the '-s' must match up with the name specified in the .spec files.

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Recommended reading:

• man catalyst