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-rw-r--r--meta/classes/externalsrc.bbclass53
1 files changed, 53 insertions, 0 deletions
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1# Copyright (C) 2012 Linux Foundation
2# Author: Richard Purdie
3# Some code and influence taken from srctree.bbclass:
4# Copyright (C) 2009 Chris Larson <clarson@kergoth.com>
5# Released under the MIT license (see COPYING.MIT for the terms)
6#
7# externalsrc.bbclass enables use of an existing source tree, usually external to
8# the build system to build a piece of software rather than the usual fetch/unpack/patch
9# process.
10#
11# To use, set S to point at the directory you want to use containing the sources
12# e.g. S = "/path/to/my/source/tree"
13#
14# If the class is to work for both target and native versions (or with multilibs/
15# cross or other BBCLASSEXTEND variants), its expected that setting B to point to
16# where to place the compiled binaries will work (split source and build directories).
17# This is the default but B can be set to S if circumstaces dictate.
18#
19
20SRC_URI = ""
21SRCTREECOVEREDTASKS ?= "do_patch do_unpack do_fetch"
22B = "${WORKDIR}/${BPN}-${PV}/"
23
24def remove_tasks(tasks, deltasks, d):
25 for task in tasks:
26 deps = d.getVarFlag(task, "deps")
27 for preptask in deltasks:
28 if preptask in deps:
29 deps.remove(preptask)
30 d.setVarFlag(task, "deps", deps)
31 # Poking around bitbake internal variables is evil but there appears to be no better way :(
32 tasklist = d.getVar('__BBTASKS') or []
33 for task in deltasks:
34 d.delVarFlag(task, "task")
35 if task in tasklist:
36 tasklist.remove(task)
37 d.setVar('__BBTASKS', tasklist)
38
39python () {
40 tasks = filter(lambda k: d.getVarFlag(k, "task"), d.keys())
41 covered = d.getVar("SRCTREECOVEREDTASKS", True).split()
42
43 for task in tasks:
44 if task.endswith("_setscene"):
45 # sstate is never going to work for external source trees, disable it
46 covered.append(task)
47 else:
48 # Since configure will likely touch ${S}, ensure only we lock so one task has access at a time
49 d.appendVarFlag(task, "lockfiles", "${S}/singletask.lock")
50
51 remove_tasks(tasks, covered, d)
52}
53