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# Copyright (C) 2012 Linux Foundation
# Author: Richard Purdie
# Some code and influence taken from srctree.bbclass:
# Copyright (C) 2009 Chris Larson <clarson@kergoth.com>
# Released under the MIT license (see COPYING.MIT for the terms)
#
# externalsrc.bbclass enables use of an existing source tree, usually external to
# the build system to build a piece of software rather than the usual fetch/unpack/patch
# process.
#
# To use, add externalsrc to the global inherit and set EXTERNALSRC to point at the
# directory you want to use containing the sources e.g. from local.conf for a recipe
# called "myrecipe" you would do:
#
# INHERIT += "externalsrc"
# EXTERNALSRC_pn-myrecipe = "/path/to/my/source/tree"
#
# In order to make this class work for both target and native versions (or with
# multilibs/cross or other BBCLASSEXTEND variants), B is set to point to a separate
# directory under the work directory (split source and build directories). This is
# the default, but the build directory can be set to the source directory if
# circumstances dictate by setting EXTERNALSRC_BUILD to the same value, e.g.:
#
# EXTERNALSRC_BUILD_pn-myrecipe = "/path/to/my/source/tree"
#
SRCTREECOVEREDTASKS ?= "do_patch do_unpack do_fetch"
def remove_tasks(tasks, deltasks, d):
for task in tasks:
deps = d.getVarFlag(task, "deps")
for preptask in deltasks:
if preptask in deps:
deps.remove(preptask)
d.setVarFlag(task, "deps", deps)
# Poking around bitbake internal variables is evil but there appears to be no better way :(
tasklist = d.getVar('__BBTASKS') or []
for task in deltasks:
d.delVarFlag(task, "task")
if task in tasklist:
tasklist.remove(task)
d.setVar('__BBTASKS', tasklist)
python () {
externalsrc = d.getVar('EXTERNALSRC', True)
if externalsrc:
d.setVar('S', externalsrc)
externalsrcbuild = d.getVar('EXTERNALSRC_BUILD', True)
if externalsrcbuild:
d.setVar('B', externalsrcbuild)
else:
d.setVar('B', '${WORKDIR}/${BPN}-${PV}/')
d.setVar('SRC_URI', '')
tasks = filter(lambda k: d.getVarFlag(k, "task"), d.keys())
covered = d.getVar("SRCTREECOVEREDTASKS", True).split()
for task in tasks:
if task.endswith("_setscene"):
# sstate is never going to work for external source trees, disable it
covered.append(task)
else:
# Since configure will likely touch ${S}, ensure only we lock so one task has access at a time
d.appendVarFlag(task, "lockfiles", "${S}/singletask.lock")
remove_tasks(tasks, covered, d)
}
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