# 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}/') d.setVar('SRC_URI', '') 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") for task in d.getVar("SRCTREECOVEREDTASKS", True).split(): bb.build.deltask(task, d) }