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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"
-EXTERNALSRC_SYMLINKS ?= "oe-workdir:${WORKDIR} oe-logs:${T}"
-
-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", True), 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", " ${S}/singletask.lock")
-
- # We do not want our source to be wiped out, ever (kernel.bbclass does this for do_clean)
- cleandirs = (d.getVarFlag(task, 'cleandirs', False) or '').split()
- setvalue = False
- for cleandir in cleandirs[:]:
- if d.expand(cleandir) == externalsrc:
- cleandirs.remove(cleandir)
- setvalue = True
- if setvalue:
- d.setVarFlag(task, 'cleandirs', ' '.join(cleandirs))
-
- fetch_tasks = ['do_fetch', 'do_unpack']
- # If we deltask do_patch, there's no dependency to ensure do_unpack gets run, so add one
- # Note that we cannot use d.appendVarFlag() here because deps is expected to be a list object, not a string
- d.setVarFlag('do_configure', 'deps', (d.getVarFlag('do_configure', 'deps', False) or []) + ['do_unpack'])
-
- for task in d.getVar("SRCTREECOVEREDTASKS", True).split():
- if local_srcuri and task in fetch_tasks:
- continue
- bb.build.deltask(task, d)
-
- d.prependVarFlag('do_compile', 'prefuncs', "externalsrc_compile_prefunc ")
- d.prependVarFlag('do_configure', 'prefuncs', "externalsrc_configure_prefunc ")
-
- # Force the recipe to be always re-parsed so that the file_checksums
- # function is run every time
- d.setVar('BB_DONT_CACHE', '1')
- d.setVarFlag('do_compile', 'file-checksums', '${@srctree_hash_files(d)}')
-
- # We don't want the workdir to go away
- d.appendVar('RM_WORK_EXCLUDE', ' ' + d.getVar('PN', True))
-
- # If B=S the same builddir is used even for different architectures.
- # Thus, use a shared CONFIGURESTAMPFILE and STAMP directory so that
- # change of do_configure task hash is correctly detected and stamps are
- # invalidated if e.g. MACHINE changes.
- if d.getVar('S', True) == d.getVar('B', True):
- configstamp = '${TMPDIR}/work-shared/${PN}/${EXTENDPE}${PV}-${PR}/configure.sstate'
- d.setVar('CONFIGURESTAMPFILE', configstamp)
- d.setVar('STAMP', '${STAMPS_DIR}/work-shared/${PN}/${EXTENDPE}${PV}-${PR}')
-}
-
-python externalsrc_configure_prefunc() {
- # Create desired symlinks
- symlinks = (d.getVar('EXTERNALSRC_SYMLINKS', True) or '').split()
- for symlink in symlinks:
- symsplit = symlink.split(':', 1)
- lnkfile = os.path.join(d.getVar('S', True), symsplit[0])
- target = d.expand(symsplit[1])
- if len(symsplit) > 1:
- if os.path.islink(lnkfile):
- # Link already exists, leave it if it points to the right location already
- if os.readlink(lnkfile) == target:
- continue
- os.unlink(lnkfile)
- elif os.path.exists(lnkfile):
- # File/dir exists with same name as link, just leave it alone
- continue
- os.symlink(target, lnkfile)
-}
-
-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)))
-}
-
-def srctree_hash_files(d):
- import shutil
- import subprocess
- import tempfile
-
- s_dir = d.getVar('EXTERNALSRC', True)
- git_dir = os.path.join(s_dir, '.git')
- oe_hash_file = os.path.join(git_dir, 'oe-devtool-tree-sha1')
-
- ret = " "
- if os.path.exists(git_dir):
- with tempfile.NamedTemporaryFile(dir=git_dir, prefix='oe-devtool-index') as tmp_index:
- # Clone index
- shutil.copy2(os.path.join(git_dir, 'index'), tmp_index.name)
- # Update our custom index
- env = os.environ.copy()
- env['GIT_INDEX_FILE'] = tmp_index.name
- subprocess.check_output(['git', 'add', '.'], cwd=s_dir, env=env)
- sha1 = subprocess.check_output(['git', 'write-tree'], cwd=s_dir, env=env)
- with open(oe_hash_file, 'w') as fobj:
- fobj.write(sha1)
- ret = oe_hash_file + ':True'
- else:
- ret = d.getVar('EXTERNALSRC', True) + '/*:True'
- return ret