hammer.git - The extremely simple HAMMER build system
Technical Reference Guide
Copyright (C) 2012-2014 Aaro Koskinen <aaro.koskinen@iki.fi>
Licensed under the GNU General Public License version 2 (GPLv2).
INTRODUCTION
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hammer.git provides simple scripts and tools for building a complete Linux
distribution. The idea is that you pull this stuff into your project and
the zero-length files are hooks (the supported interface) that you are
supposed to modify.
ENVIRONMENT
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Some magic enviroment variables:
WEAK_DEPS
When set to "1", strict dependency rules between subsystems are
bypassed and a clean build within a subsystem is not enforced
when some build script is modified. This is mainly useful when
developing & build-testing a newly added package to avoid a
complete rebuild of everything. Using this option may result in
some stale files remaining whenever the content of some package
changes, and generally results in a nonreproducible build.
<package name>_force
When set, forces a rebuild of a single package. This is mainly
useful only together with "<package name>_sources" variable.
<package name>_sources
Specifies a directory that overrides a package source code from
the content defined by PKG_URL. This is mainly useful when
developing new patches against a package (by modifying its source
tree) or when trying out a new version of a package or while
bisecting a package etc. Using this option very likely results in a
nonreproducible build.
At this time, there is no more documentation available, sorry.