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https://git.yoctoproject.org/poky
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The fixmepath file that is generated contains a list of all of the files that need their paths fixed. In the previous version the fixmepath was generated to include all of the files that sed may have changed. In the new version, we first grep the files to see if they contain a path that needs to be changed, only then do we perform the sed operation on those files. This results in a modest performance increate in the creation of the sstate file. The following numbers include the do_package and do_populate_sysroot tasks on the perl recipe. Before the change: real 4m23.018s user 1m57.067s sys 1m33.327s After the change: real 4m13.083s user 1m54.062s sys 1m26.064s However, a more significnt performance gain is felt during the extraction/install of sstate cache files, as the fixmepaths file now has a significantly smaller list of files to modify. Before the change: real 0m39.798s user 0m11.158s sys 0m12.642s After the change: real 0m25.511s user 0m8.408s sys 0m5.077s (All numbers above were recorded with a cold filesystem cache on a machine with 12 GB of ram.) (From OE-Core rev: 46067264bedeff8248a2b2441733420fe6651f84) Signed-off-by: Mark Hatle <mark.hatle@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
551 lines
20 KiB
Plaintext
551 lines
20 KiB
Plaintext
SSTATE_VERSION = "2"
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SSTATE_MANIFESTS ?= "${TMPDIR}/sstate-control"
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SSTATE_MANFILEBASE = "${SSTATE_MANIFESTS}/manifest-${SSTATE_MANMACH}-"
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SSTATE_MANFILEPREFIX = "${SSTATE_MANFILEBASE}${PN}"
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SSTATE_PKGARCH = "${PACKAGE_ARCH}"
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SSTATE_PKGSPEC = "sstate-${PN}-${PACKAGE_ARCH}${TARGET_VENDOR}-${TARGET_OS}-${PV}-${PR}-${SSTATE_PKGARCH}-${SSTATE_VERSION}-"
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SSTATE_PKGNAME = "${SSTATE_PKGSPEC}${BB_TASKHASH}"
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SSTATE_PKG = "${SSTATE_DIR}/${SSTATE_PKGNAME}"
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SSTATE_SCAN_FILES ?= "*.la *-config *_config"
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SSTATE_SCAN_CMD ?= 'find ${SSTATE_BUILDDIR} \( -name "${@"\" -o -name \"".join(d.getVar("SSTATE_SCAN_FILES", True).split())}" \) -type f'
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BB_HASHFILENAME = "${SSTATE_PKGNAME}"
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SSTATE_MANMACH ?= "${SSTATE_PKGARCH}"
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SSTATEPREINSTFUNCS ?= ""
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SSTATEPOSTINSTFUNCS ?= ""
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python () {
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if bb.data.inherits_class('native', d):
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d.setVar('SSTATE_PKGARCH', d.getVar('BUILD_ARCH'))
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elif bb.data.inherits_class('cross', d):
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d.setVar('SSTATE_PKGARCH', d.expand("${BUILD_ARCH}_${TUNE_PKGARCH}"))
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d.setVar('SSTATE_MANMACH', d.expand("${BUILD_ARCH}_${MACHINE}"))
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elif bb.data.inherits_class('crosssdk', d):
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d.setVar('SSTATE_PKGARCH', d.expand("${BUILD_ARCH}_${PACKAGE_ARCH}"))
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elif bb.data.inherits_class('nativesdk', d):
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d.setVar('SSTATE_PKGARCH', d.expand("${SDK_ARCH}"))
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elif bb.data.inherits_class('cross-canadian', d):
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d.setVar('SSTATE_PKGARCH', d.expand("${SDK_ARCH}_${PACKAGE_ARCH}"))
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else:
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d.setVar('SSTATE_MANMACH', d.expand("${MACHINE}"))
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# These classes encode staging paths into their scripts data so can only be
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# reused if we manipulate the paths
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if bb.data.inherits_class('native', d) or bb.data.inherits_class('cross', d) or bb.data.inherits_class('sdk', d) or bb.data.inherits_class('crosssdk', d):
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scan_cmd = "grep -Irl ${STAGING_DIR} ${SSTATE_BUILDDIR}"
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d.setVar('SSTATE_SCAN_CMD', scan_cmd)
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unique_tasks = set((d.getVar('SSTATETASKS', True) or "").split())
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d.setVar('SSTATETASKS', " ".join(unique_tasks))
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namemap = []
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for task in unique_tasks:
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namemap.append(d.getVarFlag(task, 'sstate-name'))
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d.prependVarFlag(task, 'prefuncs', "sstate_task_prefunc ")
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d.appendVarFlag(task, 'postfuncs', " sstate_task_postfunc")
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d.setVar('SSTATETASKNAMES', " ".join(namemap))
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}
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def sstate_init(name, task, d):
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ss = {}
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ss['task'] = task
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ss['name'] = name
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ss['dirs'] = []
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ss['plaindirs'] = []
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ss['lockfiles'] = []
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ss['lockfiles-shared'] = []
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return ss
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def sstate_state_fromvars(d, task = None):
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if task is None:
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task = d.getVar('BB_CURRENTTASK', True)
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if not task:
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bb.fatal("sstate code running without task context?!")
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task = task.replace("_setscene", "")
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name = d.getVarFlag("do_" + task, 'sstate-name', True)
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inputs = (d.getVarFlag("do_" + task, 'sstate-inputdirs', True) or "").split()
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outputs = (d.getVarFlag("do_" + task, 'sstate-outputdirs', True) or "").split()
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plaindirs = (d.getVarFlag("do_" + task, 'sstate-plaindirs', True) or "").split()
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lockfiles = (d.getVarFlag("do_" + task, 'sstate-lockfile', True) or "").split()
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lockfilesshared = (d.getVarFlag("do_" + task, 'sstate-lockfile-shared', True) or "").split()
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interceptfuncs = (d.getVarFlag("do_" + task, 'sstate-interceptfuncs', True) or "").split()
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if not name or len(inputs) != len(outputs):
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bb.fatal("sstate variables not setup correctly?!")
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ss = sstate_init(name, task, d)
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for i in range(len(inputs)):
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sstate_add(ss, inputs[i], outputs[i], d)
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ss['lockfiles'] = lockfiles
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ss['lockfiles-shared'] = lockfilesshared
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ss['plaindirs'] = plaindirs
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ss['interceptfuncs'] = interceptfuncs
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return ss
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def sstate_add(ss, source, dest, d):
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srcbase = os.path.basename(source)
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ss['dirs'].append([srcbase, source, dest])
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return ss
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def sstate_install(ss, d):
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import oe.path
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sharedfiles = []
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shareddirs = []
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bb.mkdirhier(d.expand("${SSTATE_MANIFESTS}"))
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manifest = d.expand("${SSTATE_MANFILEPREFIX}.%s" % ss['name'])
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if os.access(manifest, os.R_OK):
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bb.fatal("Package already staged (%s)?!" % manifest)
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locks = []
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for lock in ss['lockfiles-shared']:
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locks.append(bb.utils.lockfile(lock, True))
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for lock in ss['lockfiles']:
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locks.append(bb.utils.lockfile(lock))
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for state in ss['dirs']:
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oe.path.copytree(state[1], state[2])
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for walkroot, dirs, files in os.walk(state[1]):
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bb.debug(2, "Staging files from %s to %s" % (state[1], state[2]))
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for file in files:
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srcpath = os.path.join(walkroot, file)
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dstpath = srcpath.replace(state[1], state[2])
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#bb.debug(2, "Staging %s to %s" % (srcpath, dstpath))
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sharedfiles.append(dstpath)
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for dir in dirs:
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srcdir = os.path.join(walkroot, dir)
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dstdir = srcdir.replace(state[1], state[2])
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#bb.debug(2, "Staging %s to %s" % (srcdir, dstdir))
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if not dstdir.endswith("/"):
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dstdir = dstdir + "/"
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shareddirs.append(dstdir)
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f = open(manifest, "w")
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for file in sharedfiles:
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f.write(file + "\n")
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# We want to ensure that directories appear at the end of the manifest
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# so that when we test to see if they should be deleted any contents
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# added by the task will have been removed first.
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dirs = sorted(shareddirs, key=len)
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# Must remove children first, which will have a longer path than the parent
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for di in reversed(dirs):
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f.write(di + "\n")
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f.close()
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for postinst in (d.getVar('SSTATEPOSTINSTFUNCS', True) or '').split():
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bb.build.exec_func(postinst, d)
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for lock in locks:
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bb.utils.unlockfile(lock)
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def sstate_installpkg(ss, d):
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import oe.path
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def prepdir(dir):
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# remove dir if it exists, ensure any parent directories do exist
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if os.path.exists(dir):
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oe.path.remove(dir)
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bb.mkdirhier(dir)
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oe.path.remove(dir)
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sstateinst = d.expand("${WORKDIR}/sstate-install-%s/" % ss['name'])
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sstatepkg = d.getVar('SSTATE_PKG', True) + '_' + ss['name'] + ".tgz"
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if not os.path.exists(sstatepkg):
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pstaging_fetch(sstatepkg, d)
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if not os.path.isfile(sstatepkg):
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bb.note("Staging package %s does not exist" % sstatepkg)
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return False
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sstate_clean(ss, d)
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d.setVar('SSTATE_INSTDIR', sstateinst)
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d.setVar('SSTATE_PKG', sstatepkg)
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for preinst in (d.getVar('SSTATEPREINSTFUNCS', True) or '').split():
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bb.build.exec_func(preinst, d)
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bb.build.exec_func('sstate_unpack_package', d)
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# Fixup hardcoded paths
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#
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# Note: The logic below must match the reverse logic in
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# sstate_hardcode_path(d)
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fixmefn = sstateinst + "fixmepath"
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if os.path.isfile(fixmefn):
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staging = d.getVar('STAGING_DIR', True)
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staging_target = d.getVar('STAGING_DIR_TARGET', True)
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staging_host = d.getVar('STAGING_DIR_HOST', True)
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if bb.data.inherits_class('native', d) or bb.data.inherits_class('nativesdk', d) or bb.data.inherits_class('crosssdk', d) or bb.data.inherits_class('cross-canadian', d):
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sstate_sed_cmd = "sed -i -e 's:FIXMESTAGINGDIR:%s:g'" % (staging)
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elif bb.data.inherits_class('cross', d):
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sstate_sed_cmd = "sed -i -e 's:FIXMESTAGINGDIRTARGET:%s:g; s:FIXMESTAGINGDIR:%s:g'" % (staging_target, staging)
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else:
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sstate_sed_cmd = "sed -i -e 's:FIXMESTAGINGDIRHOST:%s:g'" % (staging_host)
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# Add sstateinst to each filename in fixmepath, use xargs to efficiently call sed
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sstate_hardcode_cmd = "sed -e 's:^:%s:g' %s | xargs %s" % (sstateinst, fixmefn, sstate_sed_cmd)
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print "Replacing fixme paths in sstate package: %s" % (sstate_hardcode_cmd)
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os.system(sstate_hardcode_cmd)
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# Need to remove this or we'd copy it into the target directory and may
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# conflict with another writer
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os.remove(fixmefn)
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for state in ss['dirs']:
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prepdir(state[1])
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os.rename(sstateinst + state[0], state[1])
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sstate_install(ss, d)
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for plain in ss['plaindirs']:
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workdir = d.getVar('WORKDIR', True)
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src = sstateinst + "/" + plain.replace(workdir, '')
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dest = plain
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bb.mkdirhier(src)
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prepdir(dest)
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os.rename(src, dest)
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return True
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def sstate_clean_cachefile(ss, d):
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import oe.path
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sstatepkgdir = d.getVar('SSTATE_DIR', True)
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sstatepkgfile = sstatepkgdir + '/' + d.getVar('SSTATE_PKGSPEC', True) + "*_" + ss['name'] + ".tgz*"
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bb.note("Removing %s" % sstatepkgfile)
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oe.path.remove(sstatepkgfile)
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def sstate_clean_cachefiles(d):
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for task in (d.getVar('SSTATETASKS', True) or "").split():
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ss = sstate_state_fromvars(d, task[3:])
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sstate_clean_cachefile(ss, d)
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def sstate_clean_manifest(manifest, d):
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import oe.path
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mfile = open(manifest)
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entries = mfile.readlines()
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mfile.close()
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for entry in entries:
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entry = entry.strip()
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bb.debug(2, "Removing manifest: %s" % entry)
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# We can race against another package populating directories as we're removing them
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# so we ignore errors here.
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try:
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if entry.endswith("/"):
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if os.path.islink(entry[:-1]):
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os.remove(entry[:-1])
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elif os.path.exists(entry) and len(os.listdir(entry)) == 0:
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os.rmdir(entry[:-1])
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else:
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oe.path.remove(entry)
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except OSError:
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pass
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oe.path.remove(manifest)
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def sstate_clean(ss, d):
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import oe.path
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manifest = d.expand("${SSTATE_MANFILEPREFIX}.%s" % ss['name'])
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if os.path.exists(manifest):
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locks = []
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for lock in ss['lockfiles-shared']:
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locks.append(bb.utils.lockfile(lock))
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for lock in ss['lockfiles']:
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locks.append(bb.utils.lockfile(lock))
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sstate_clean_manifest(manifest, d)
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for lock in locks:
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bb.utils.unlockfile(lock)
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stfile = d.getVar("STAMP", True) + ".do_" + ss['task']
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extrainf = d.getVarFlag("do_" + ss['task'], 'stamp-extra-info', True)
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oe.path.remove(stfile)
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oe.path.remove(stfile + "_setscene")
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if extrainf:
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oe.path.remove(stfile + ".*" + extrainf)
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oe.path.remove(stfile + "_setscene" + ".*" + extrainf)
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else:
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oe.path.remove(stfile + ".*")
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oe.path.remove(stfile + "_setscene" + ".*")
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CLEANFUNCS += "sstate_cleanall"
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python sstate_cleanall() {
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import fnmatch
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bb.note("Removing shared state for package %s" % d.getVar('PN', True))
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manifest_dir = d.getVar('SSTATE_MANIFESTS', True)
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manifest_prefix = d.getVar("SSTATE_MANFILEPREFIX", True)
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manifest_pattern = os.path.basename(manifest_prefix) + ".*"
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if not os.path.exists(manifest_dir):
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return
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for manifest in (os.listdir(manifest_dir)):
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if fnmatch.fnmatch(manifest, manifest_pattern):
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name = manifest.replace(manifest_pattern[:-1], "")
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namemap = d.getVar('SSTATETASKNAMES', True).split()
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tasks = d.getVar('SSTATETASKS', True).split()
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if name not in namemap:
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continue
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taskname = tasks[namemap.index(name)]
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shared_state = sstate_state_fromvars(d, taskname[3:])
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sstate_clean(shared_state, d)
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}
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def sstate_hardcode_path(d):
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# Need to remove hardcoded paths and fix these when we install the
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# staging packages.
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#
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# Note: the logic in this function needs to match the reverse logic
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# in sstate_installpkg(ss, d)
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staging = d.getVar('STAGING_DIR', True)
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staging_target = d.getVar('STAGING_DIR_TARGET', True)
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staging_host = d.getVar('STAGING_DIR_HOST', True)
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sstate_builddir = d.getVar('SSTATE_BUILDDIR', True)
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if bb.data.inherits_class('native', d) or bb.data.inherits_class('nativesdk', d) or bb.data.inherits_class('crosssdk', d) or bb.data.inherits_class('cross-canadian', d):
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sstate_grep_cmd = "grep -l -e '%s'" % (staging)
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sstate_sed_cmd = "sed -i -e 's:%s:FIXMESTAGINGDIR:g'" % (staging)
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elif bb.data.inherits_class('cross', d):
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sstate_grep_cmd = "grep -l -e '(%s|%s)'" % (staging_target, staging)
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sstate_sed_cmd = "sed -i -e 's:%s:FIXMESTAGINGDIRTARGET:g; s:%s:FIXMESTAGINGDIR:g'" % (staging_target, staging)
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else:
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sstate_grep_cmd = "grep -l -e '%s'" % (staging_host)
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sstate_sed_cmd = "sed -i -e 's:%s:FIXMESTAGINGDIRHOST:g'" % (staging_host)
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sstate_scan_cmd = d.getVar('SSTATE_SCAN_CMD', True)
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sstate_filelist_cmd = "tee %sfixmepath" % (sstate_builddir)
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# fixmepath file needs relative paths, drop sstate_builddir prefix
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sstate_filelist_relative_cmd = "sed -i -e 's:^%s::g' %sfixmepath" % (sstate_builddir, sstate_builddir)
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# Limit the fixpaths and sed operations based on the initial grep search
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# This has the side effect of making sure the vfs cache is hot
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sstate_hardcode_cmd = "%s | xargs %s | %s | xargs %s" % (sstate_scan_cmd, sstate_grep_cmd, sstate_filelist_cmd, sstate_sed_cmd)
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print "Removing hardcoded paths from sstate package: '%s'" % (sstate_hardcode_cmd)
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os.system(sstate_hardcode_cmd)
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print "Replacing absolute paths in fixmepath file: '%s'" % (sstate_filelist_relative_cmd)
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os.system(sstate_filelist_relative_cmd)
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def sstate_package(ss, d):
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import oe.path
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def make_relative_symlink(path, outputpath, d):
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# Replace out absolute TMPDIR paths in symlinks with relative ones
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if not os.path.islink(path):
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return
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link = os.readlink(path)
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if not os.path.isabs(link):
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return
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if not link.startswith(tmpdir):
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return
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depth = link.rpartition(tmpdir)[2].count('/')
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base = link.partition(tmpdir)[2].strip()
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while depth > 1:
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base = "../" + base
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depth -= 1
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bb.debug(2, "Replacing absolute path %s with relative path %s" % (link, base))
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os.remove(path)
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os.symlink(base, path)
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tmpdir = d.getVar('TMPDIR', True)
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sstatebuild = d.expand("${WORKDIR}/sstate-build-%s/" % ss['name'])
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sstatepkg = d.getVar('SSTATE_PKG', True) + '_'+ ss['name'] + ".tgz"
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bb.mkdirhier(sstatebuild)
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bb.mkdirhier(os.path.dirname(sstatepkg))
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for state in ss['dirs']:
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srcbase = state[0].rstrip("/").rsplit('/', 1)[0]
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for walkroot, dirs, files in os.walk(state[1]):
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for file in files:
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srcpath = os.path.join(walkroot, file)
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dstpath = srcpath.replace(state[1], sstatebuild + state[0])
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make_relative_symlink(srcpath, dstpath, d)
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for dir in dirs:
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srcpath = os.path.join(walkroot, dir)
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dstpath = srcpath.replace(state[1], sstatebuild + state[0])
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make_relative_symlink(srcpath, dstpath, d)
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bb.debug(2, "Preparing tree %s for packaging at %s" % (state[1], sstatebuild + state[0]))
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oe.path.copytree(state[1], sstatebuild + state[0])
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workdir = d.getVar('WORKDIR', True)
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for plain in ss['plaindirs']:
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pdir = plain.replace(workdir, sstatebuild)
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bb.mkdirhier(plain)
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bb.mkdirhier(pdir)
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oe.path.copytree(plain, pdir)
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d.setVar('SSTATE_BUILDDIR', sstatebuild)
|
|
d.setVar('SSTATE_PKG', sstatepkg)
|
|
sstate_hardcode_path(d)
|
|
bb.build.exec_func('sstate_create_package', d)
|
|
|
|
bb.siggen.dump_this_task(sstatepkg + ".siginfo", d)
|
|
|
|
return
|
|
|
|
def pstaging_fetch(sstatepkg, d):
|
|
import bb.fetch2
|
|
|
|
# Only try and fetch if the user has configured a mirror
|
|
mirrors = d.getVar('SSTATE_MIRRORS', True)
|
|
if not mirrors:
|
|
return
|
|
|
|
# Copy the data object and override DL_DIR and SRC_URI
|
|
localdata = bb.data.createCopy(d)
|
|
bb.data.update_data(localdata)
|
|
|
|
dldir = localdata.expand("${SSTATE_DIR}")
|
|
srcuri = "file://" + os.path.basename(sstatepkg)
|
|
|
|
bb.mkdirhier(dldir)
|
|
|
|
localdata.setVar('DL_DIR', dldir)
|
|
localdata.setVar('PREMIRRORS', mirrors)
|
|
localdata.setVar('SRC_URI', srcuri)
|
|
|
|
# Try a fetch from the sstate mirror, if it fails just return and
|
|
# we will build the package
|
|
try:
|
|
fetcher = bb.fetch2.Fetch([srcuri], localdata, cache=False)
|
|
fetcher.download()
|
|
|
|
# Need to optimise this, if using file:// urls, the fetcher just changes the local path
|
|
# For now work around by symlinking
|
|
localpath = bb.data.expand(fetcher.localpath(srcuri), localdata)
|
|
if localpath != sstatepkg and os.path.exists(localpath) and not os.path.exists(sstatepkg):
|
|
os.symlink(localpath, sstatepkg)
|
|
|
|
except bb.fetch2.BBFetchException:
|
|
pass
|
|
|
|
def sstate_setscene(d):
|
|
shared_state = sstate_state_fromvars(d)
|
|
accelerate = sstate_installpkg(shared_state, d)
|
|
if not accelerate:
|
|
raise bb.build.FuncFailed("No suitable staging package found")
|
|
|
|
python sstate_task_prefunc () {
|
|
shared_state = sstate_state_fromvars(d)
|
|
sstate_clean(shared_state, d)
|
|
}
|
|
|
|
python sstate_task_postfunc () {
|
|
shared_state = sstate_state_fromvars(d)
|
|
sstate_install(shared_state, d)
|
|
for intercept in shared_state['interceptfuncs']:
|
|
bb.build.exec_func(intercept, d)
|
|
sstate_package(shared_state, d)
|
|
}
|
|
|
|
|
|
#
|
|
# Shell function to generate a sstate package from a directory
|
|
# set as SSTATE_BUILDDIR
|
|
#
|
|
sstate_create_package () {
|
|
cd ${SSTATE_BUILDDIR}
|
|
TFILE=`mktemp ${SSTATE_PKG}.XXXXXXXX`
|
|
# Need to handle empty directories
|
|
if [ "$(ls -A)" ]; then
|
|
tar -czf $TFILE *
|
|
else
|
|
tar -cz --file=$TFILE --files-from=/dev/null
|
|
fi
|
|
mv $TFILE ${SSTATE_PKG}
|
|
|
|
cd ${WORKDIR}
|
|
rm -rf ${SSTATE_BUILDDIR}
|
|
}
|
|
|
|
#
|
|
# Shell function to decompress and prepare a package for installation
|
|
#
|
|
sstate_unpack_package () {
|
|
mkdir -p ${SSTATE_INSTDIR}
|
|
cd ${SSTATE_INSTDIR}
|
|
tar -xvzf ${SSTATE_PKG}
|
|
}
|
|
|
|
BB_HASHCHECK_FUNCTION = "sstate_checkhashes"
|
|
|
|
def sstate_checkhashes(sq_fn, sq_task, sq_hash, sq_hashfn, d):
|
|
|
|
ret = []
|
|
# This needs to go away, FIXME
|
|
mapping = {
|
|
"do_populate_sysroot" : "populate-sysroot",
|
|
"do_populate_lic" : "populate-lic",
|
|
"do_package_write_ipk" : "deploy-ipk",
|
|
"do_package_write_deb" : "deploy-deb",
|
|
"do_package_write_rpm" : "deploy-rpm",
|
|
"do_package" : "package",
|
|
"do_deploy" : "deploy",
|
|
}
|
|
|
|
for task in range(len(sq_fn)):
|
|
sstatefile = d.expand("${SSTATE_DIR}/" + sq_hashfn[task] + "_" + mapping[sq_task[task]] + ".tgz")
|
|
sstatefile = sstatefile.replace("${BB_TASKHASH}", sq_hash[task])
|
|
if os.path.exists(sstatefile):
|
|
bb.debug(2, "SState: Found valid sstate file %s" % sstatefile)
|
|
ret.append(task)
|
|
continue
|
|
else:
|
|
bb.debug(2, "SState: Looked for but didn't find file %s" % sstatefile)
|
|
|
|
mirrors = d.getVar("SSTATE_MIRRORS", True)
|
|
if mirrors:
|
|
# Copy the data object and override DL_DIR and SRC_URI
|
|
localdata = bb.data.createCopy(d)
|
|
bb.data.update_data(localdata)
|
|
|
|
dldir = localdata.expand("${SSTATE_DIR}")
|
|
localdata.setVar('DL_DIR', dldir)
|
|
localdata.setVar('PREMIRRORS', mirrors)
|
|
|
|
bb.debug(2, "SState using premirror of: %s" % mirrors)
|
|
|
|
for task in range(len(sq_fn)):
|
|
if task in ret:
|
|
continue
|
|
|
|
sstatefile = d.expand("${SSTATE_DIR}/" + sq_hashfn[task] + "_" + mapping[sq_task[task]] + ".tgz")
|
|
sstatefile = sstatefile.replace("${BB_TASKHASH}", sq_hash[task])
|
|
|
|
srcuri = "file://" + os.path.basename(sstatefile)
|
|
localdata.setVar('SRC_URI', srcuri)
|
|
bb.debug(2, "SState: Attempting to fetch %s" % srcuri)
|
|
|
|
try:
|
|
fetcher = bb.fetch2.Fetch(srcuri.split(), localdata)
|
|
fetcher.checkstatus()
|
|
bb.debug(2, "SState: Successful fetch test for %s" % srcuri)
|
|
ret.append(task)
|
|
except:
|
|
bb.debug(2, "SState: Unsuccessful fetch test for %s" % srcuri)
|
|
pass
|
|
|
|
return ret
|
|
|