# Copyright (C) 2012 Linux Foundation # Author: Richard Purdie # Some code and influence taken from srctree.bbclass: # Copyright (C) 2009 Chris Larson # 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" 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}/') local_srcuri = [] fetch = bb.fetch2.Fetch((d.getVar('SRC_URI', True) or '').split(), d) for url in fetch.urls: url_data = fetch.ud[url] parm = url_data.parm if (url_data.type == 'file' or 'type' in parm and parm['type'] == 'kmeta'): local_srcuri.append(url) d.setVar('SRC_URI', ' '.join(local_srcuri)) if '{SRCPV}' in d.getVar('PV', False): # Dummy value because the default function can't be called with blank SRC_URI d.setVar('SRCPV', '999') tasks = filter(lambda k: d.getVarFlag(k, "task"), d.keys()) for task in tasks: if task.endswith("_setscene"): # sstate is never going to work for external source trees, disable it bb.build.deltask(task, d) 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") # We do not want our source to be wiped out, ever (kernel.bbclass does this for do_clean) cleandirs = (d.getVarFlag(task, 'cleandirs', False) or '').split() setvalue = False for cleandir in cleandirs[:]: if d.expand(cleandir) == externalsrc: cleandirs.remove(cleandir) setvalue = True if setvalue: d.setVarFlag(task, 'cleandirs', ' '.join(cleandirs)) fetch_tasks = ['do_fetch', 'do_unpack'] # If we deltask do_patch, there's no dependency to ensure do_unpack gets run, so add one # Note that we cannot use d.appendVarFlag() here because deps is expected to be a list object, not a string d.setVarFlag('do_configure', 'deps', (d.getVarFlag('do_configure', 'deps', False) or []) + ['do_unpack']) for task in d.getVar("SRCTREECOVEREDTASKS", True).split(): if local_srcuri and task in fetch_tasks: continue bb.build.deltask(task, d) d.prependVarFlag('do_compile', 'prefuncs', "externalsrc_compile_prefunc ") # Ensure compilation happens every time d.setVarFlag('do_compile', 'nostamp', '1') } python externalsrc_compile_prefunc() { # Make it obvious that this is happening, since forgetting about it could lead to much confusion bb.plain('NOTE: %s: compiling from external source tree %s' % (d.getVar('PN', True), d.getVar('EXTERNALSRC', True))) }