mLinux 4

10 files changed, 3606 insertions, 0 deletions

diff --git a/scripts/lib/recipetool/__init__.py b/scripts/lib/recipetool/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/scripts/lib/recipetool/__init__.py
diff --git a/scripts/lib/recipetool/append.py b/scripts/lib/recipetool/append.py
new file mode 100644
index 0000000..558fd25
--- /dev/null
+++ b/scripts/lib/recipetool/append.py
@@ -0,0 +1,471 @@
+# Recipe creation tool - append plugin
+#
+# Copyright (C) 2015 Intel Corporation
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import sys
+import os
+import argparse
+import glob
+import fnmatch
+import re
+import subprocess
+import logging
+import stat
+import shutil
+import scriptutils
+import errno
+from collections import defaultdict
+
+logger = logging.getLogger('recipetool')
+
+tinfoil = None
+
+def tinfoil_init(instance):
+    global tinfoil
+    tinfoil = instance
+
+
+# FIXME guessing when we don't have pkgdata?
+# FIXME mode to create patch rather than directly substitute
+
+class InvalidTargetFileError(Exception):
+    pass
+
+def find_target_file(targetpath, d, pkglist=None):
+    """Find the recipe installing the specified target path, optionally limited to a select list of packages"""
+    import json
+
+    pkgdata_dir = d.getVar('PKGDATA_DIR', True)
+
+    # The mix between /etc and ${sysconfdir} here may look odd, but it is just
+    # being consistent with usage elsewhere
+    invalidtargets = {'${sysconfdir}/version': '${sysconfdir}/version is written out at image creation time',
+                      '/etc/timestamp': '/etc/timestamp is written out at image creation time',
+                      '/dev/*': '/dev is handled by udev (or equivalent) and the kernel (devtmpfs)',
+                      '/etc/passwd': '/etc/passwd should be managed through the useradd and extrausers classes',
+                      '/etc/group': '/etc/group should be managed through the useradd and extrausers classes',
+                      '/etc/shadow': '/etc/shadow should be managed through the useradd and extrausers classes',
+                      '/etc/gshadow': '/etc/gshadow should be managed through the useradd and extrausers classes',
+                      '${sysconfdir}/hostname': '${sysconfdir}/hostname contents should be set by setting hostname_pn-base-files = "value" in configuration',}
+
+    for pthspec, message in invalidtargets.iteritems():
+        if fnmatch.fnmatchcase(targetpath, d.expand(pthspec)):
+            raise InvalidTargetFileError(d.expand(message))
+
+    targetpath_re = re.compile(r'\s+(\$D)?%s(\s|$)' % targetpath)
+
+    recipes = defaultdict(list)
+    for root, dirs, files in os.walk(os.path.join(pkgdata_dir, 'runtime')):
+        if pkglist:
+            filelist = pkglist
+        else:
+            filelist = files
+        for fn in filelist:
+            pkgdatafile = os.path.join(root, fn)
+            if pkglist and not os.path.exists(pkgdatafile):
+                continue
+            with open(pkgdatafile, 'r') as f:
+                pn = ''
+                # This does assume that PN comes before other values, but that's a fairly safe assumption
+                for line in f:
+                    if line.startswith('PN:'):
+                        pn = line.split(':', 1)[1].strip()
+                    elif line.startswith('FILES_INFO:'):
+                        val = line.split(':', 1)[1].strip()
+                        dictval = json.loads(val)
+                        for fullpth in dictval.keys():
+                            if fnmatch.fnmatchcase(fullpth, targetpath):
+                                recipes[targetpath].append(pn)
+                    elif line.startswith('pkg_preinst_') or line.startswith('pkg_postinst_'):
+                        scriptval = line.split(':', 1)[1].strip().decode('string_escape')
+                        if 'update-alternatives --install %s ' % targetpath in scriptval:
+                            recipes[targetpath].append('?%s' % pn)
+                        elif targetpath_re.search(scriptval):
+                            recipes[targetpath].append('!%s' % pn)
+    return recipes
+
+def _get_recipe_file(cooker, pn):
+    import oe.recipeutils
+    recipefile = oe.recipeutils.pn_to_recipe(cooker, pn)
+    if not recipefile:
+        skipreasons = oe.recipeutils.get_unavailable_reasons(cooker, pn)
+        if skipreasons:
+            logger.error('\n'.join(skipreasons))
+        else:
+            logger.error("Unable to find any recipe file matching %s" % pn)
+    return recipefile
+
+def _parse_recipe(pn, tinfoil):
+    import oe.recipeutils
+    recipefile = _get_recipe_file(tinfoil.cooker, pn)
+    if not recipefile:
+        # Error already logged
+        return None
+    append_files = tinfoil.cooker.collection.get_file_appends(recipefile)
+    rd = oe.recipeutils.parse_recipe(recipefile, append_files,
+                                    tinfoil.config_data)
+    return rd
+
+def determine_file_source(targetpath, rd):
+    """Assuming we know a file came from a specific recipe, figure out exactly where it came from"""
+    import oe.recipeutils
+
+    # See if it's in do_install for the recipe
+    workdir = rd.getVar('WORKDIR', True)
+    src_uri = rd.getVar('SRC_URI', True)
+    srcfile = ''
+    modpatches = []
+    elements = check_do_install(rd, targetpath)
+    if elements:
+        logger.debug('do_install line:\n%s' % ' '.join(elements))
+        srcpath = get_source_path(elements)
+        logger.debug('source path: %s' % srcpath)
+        if not srcpath.startswith('/'):
+            # Handle non-absolute path
+            srcpath = os.path.abspath(os.path.join(rd.getVarFlag('do_install', 'dirs', True).split()[-1], srcpath))
+        if srcpath.startswith(workdir):
+            # OK, now we have the source file name, look for it in SRC_URI
+            workdirfile = os.path.relpath(srcpath, workdir)
+            # FIXME this is where we ought to have some code in the fetcher, because this is naive
+            for item in src_uri.split():
+                localpath = bb.fetch2.localpath(item, rd)
+                # Source path specified in do_install might be a glob
+                if fnmatch.fnmatch(os.path.basename(localpath), workdirfile):
+                    srcfile = 'file://%s' % localpath
+                elif '/' in workdirfile:
+                    if item == 'file://%s' % workdirfile:
+                        srcfile = 'file://%s' % localpath
+
+        # Check patches
+        srcpatches = []
+        patchedfiles = oe.recipeutils.get_recipe_patched_files(rd)
+        for patch, filelist in patchedfiles.iteritems():
+            for fileitem in filelist:
+                if fileitem[0] == srcpath:
+                    srcpatches.append((patch, fileitem[1]))
+        if srcpatches:
+            addpatch = None
+            for patch in srcpatches:
+                if patch[1] == 'A':
+                    addpatch = patch[0]
+                else:
+                    modpatches.append(patch[0])
+            if addpatch:
+                srcfile = 'patch://%s' % addpatch
+
+    return (srcfile, elements, modpatches)
+
+def get_source_path(cmdelements):
+    """Find the source path specified within a command"""
+    command = cmdelements[0]
+    if command in ['install', 'cp']:
+        helptext = subprocess.check_output('LC_ALL=C %s --help' % command, shell=True)
+        argopts = ''
+        argopt_line_re = re.compile('^-([a-zA-Z0-9]), --[a-z-]+=')
+        for line in helptext.splitlines():
+            line = line.lstrip()
+            res = argopt_line_re.search(line)
+            if res:
+                argopts += res.group(1)
+        if not argopts:
+            # Fallback
+            if command == 'install':
+                argopts = 'gmoSt'
+            elif command == 'cp':
+                argopts = 't'
+            else:
+                raise Exception('No fallback arguments for command %s' % command)
+
+        skipnext = False
+        for elem in cmdelements[1:-1]:
+            if elem.startswith('-'):
+                if len(elem) > 1 and elem[1] in argopts:
+                    skipnext = True
+                continue
+            if skipnext:
+                skipnext = False
+                continue
+            return elem
+    else:
+        raise Exception('get_source_path: no handling for command "%s"')
+
+def get_func_deps(func, d):
+    """Find the function dependencies of a shell function"""
+    deps = bb.codeparser.ShellParser(func, logger).parse_shell(d.getVar(func, True))
+    deps |= set((d.getVarFlag(func, "vardeps", True) or "").split())
+    funcdeps = []
+    for dep in deps:
+        if d.getVarFlag(dep, 'func', True):
+            funcdeps.append(dep)
+    return funcdeps
+
+def check_do_install(rd, targetpath):
+    """Look at do_install for a command that installs/copies the specified target path"""
+    instpath = os.path.abspath(os.path.join(rd.getVar('D', True), targetpath.lstrip('/')))
+    do_install = rd.getVar('do_install', True)
+    # Handle where do_install calls other functions (somewhat crudely, but good enough for this purpose)
+    deps = get_func_deps('do_install', rd)
+    for dep in deps:
+        do_install = do_install.replace(dep, rd.getVar(dep, True))
+
+    # Look backwards through do_install as we want to catch where a later line (perhaps
+    # from a bbappend) is writing over the top
+    for line in reversed(do_install.splitlines()):
+        line = line.strip()
+        if (line.startswith('install ') and ' -m' in line) or line.startswith('cp '):
+            elements = line.split()
+            destpath = os.path.abspath(elements[-1])
+            if destpath == instpath:
+                return elements
+            elif destpath.rstrip('/') == os.path.dirname(instpath):
+                # FIXME this doesn't take recursive copy into account; unsure if it's practical to do so
+                srcpath = get_source_path(elements)
+                if fnmatch.fnmatchcase(os.path.basename(instpath), os.path.basename(srcpath)):
+                    return elements
+    return None
+
+
+def appendfile(args):
+    import oe.recipeutils
+
+    stdout = ''
+    try:
+        (stdout, _) = bb.process.run('LANG=C file -b %s' % args.newfile, shell=True)
+        if 'cannot open' in stdout:
+            raise bb.process.ExecutionError(stdout)
+    except bb.process.ExecutionError as err:
+        logger.debug('file command returned error: %s' % err)
+        stdout = ''
+    if stdout:
+        logger.debug('file command output: %s' % stdout.rstrip())
+        if ('executable' in stdout and not 'shell script' in stdout) or 'shared object' in stdout:
+            logger.warn('This file looks like it is a binary or otherwise the output of compilation. If it is, you should consider building it properly instead of substituting a binary file directly.')
+
+    if args.recipe:
+        recipes = {args.targetpath: [args.recipe],}
+    else:
+        try:
+            recipes = find_target_file(args.targetpath, tinfoil.config_data)
+        except InvalidTargetFileError as e:
+            logger.error('%s cannot be handled by this tool: %s' % (args.targetpath, e))
+            return 1
+        if not recipes:
+            logger.error('Unable to find any package producing path %s - this may be because the recipe packaging it has not been built yet' % args.targetpath)
+            return 1
+
+    alternative_pns = []
+    postinst_pns = []
+
+    selectpn = None
+    for targetpath, pnlist in recipes.iteritems():
+        for pn in pnlist:
+            if pn.startswith('?'):
+                alternative_pns.append(pn[1:])
+            elif pn.startswith('!'):
+                postinst_pns.append(pn[1:])
+            elif selectpn:
+                # hit here with multilibs
+                continue
+            else:
+                selectpn = pn
+
+    if not selectpn and len(alternative_pns) == 1:
+        selectpn = alternative_pns[0]
+        logger.error('File %s is an alternative possibly provided by recipe %s but seemingly no other, selecting it by default - you should double check other recipes' % (args.targetpath, selectpn))
+
+    if selectpn:
+        logger.debug('Selecting recipe %s for file %s' % (selectpn, args.targetpath))
+        if postinst_pns:
+            logger.warn('%s be modified by postinstall scripts for the following recipes:\n  %s\nThis may or may not be an issue depending on what modifications these postinstall scripts make.' % (args.targetpath, '\n  '.join(postinst_pns)))
+        rd = _parse_recipe(selectpn, tinfoil)
+        if not rd:
+            # Error message already shown
+            return 1
+        sourcefile, instelements, modpatches = determine_file_source(args.targetpath, rd)
+        sourcepath = None
+        if sourcefile:
+            sourcetype, sourcepath = sourcefile.split('://', 1)
+            logger.debug('Original source file is %s (%s)' % (sourcepath, sourcetype))
+            if sourcetype == 'patch':
+                logger.warn('File %s is added by the patch %s - you may need to remove or replace this patch in order to replace the file.' % (args.targetpath, sourcepath))
+                sourcepath = None
+        else:
+            logger.debug('Unable to determine source file, proceeding anyway')
+        if modpatches:
+            logger.warn('File %s is modified by the following patches:\n  %s' % (args.targetpath, '\n  '.join(modpatches)))
+
+        if instelements and sourcepath:
+            install = None
+        else:
+            # Auto-determine permissions
+            # Check destination
+            binpaths = '${bindir}:${sbindir}:${base_bindir}:${base_sbindir}:${libexecdir}:${sysconfdir}/init.d'
+            perms = '0644'
+            if os.path.abspath(os.path.dirname(args.targetpath)) in rd.expand(binpaths).split(':'):
+                # File is going into a directory normally reserved for executables, so it should be executable
+                perms = '0755'
+            else:
+                # Check source
+                st = os.stat(args.newfile)
+                if st.st_mode & stat.S_IXUSR:
+                    perms = '0755'
+            install = {args.newfile: (args.targetpath, perms)}
+        oe.recipeutils.bbappend_recipe(rd, args.destlayer, {args.newfile: sourcepath}, install, wildcardver=args.wildcard_version, machine=args.machine)
+        return 0
+    else:
+        if alternative_pns:
+            logger.error('File %s is an alternative possibly provided by the following recipes:\n  %s\nPlease select recipe with -r/--recipe' % (targetpath, '\n  '.join(alternative_pns)))
+        elif postinst_pns:
+            logger.error('File %s may be written out in a pre/postinstall script of the following recipes:\n  %s\nPlease select recipe with -r/--recipe' % (targetpath, '\n  '.join(postinst_pns)))
+        return 3
+
+
+def appendsrc(args, files, rd, extralines=None):
+    import oe.recipeutils
+
+    srcdir = rd.getVar('S', True)
+    workdir = rd.getVar('WORKDIR', True)
+
+    import bb.fetch
+    simplified = {}
+    src_uri = rd.getVar('SRC_URI', True).split()
+    for uri in src_uri:
+        if uri.endswith(';'):
+            uri = uri[:-1]
+        simple_uri = bb.fetch.URI(uri)
+        simple_uri.params = {}
+        simplified[str(simple_uri)] = uri
+
+    copyfiles = {}
+    extralines = extralines or []
+    for newfile, srcfile in files.iteritems():
+        src_destdir = os.path.dirname(srcfile)
+        if not args.use_workdir:
+            if rd.getVar('S', True) == rd.getVar('STAGING_KERNEL_DIR', True):
+                srcdir = os.path.join(workdir, 'git')
+                if not bb.data.inherits_class('kernel-yocto', rd):
+                    logger.warn('S == STAGING_KERNEL_DIR and non-kernel-yocto, unable to determine path to srcdir, defaulting to ${WORKDIR}/git')
+            src_destdir = os.path.join(os.path.relpath(srcdir, workdir), src_destdir)
+        src_destdir = os.path.normpath(src_destdir)
+
+        source_uri = 'file://{0}'.format(os.path.basename(srcfile))
+        if src_destdir and src_destdir != '.':
+            source_uri += ';subdir={0}'.format(src_destdir)
+
+        simple = bb.fetch.URI(source_uri)
+        simple.params = {}
+        simple_str = str(simple)
+        if simple_str in simplified:
+            existing = simplified[simple_str]
+            if source_uri != existing:
+                logger.warn('{0!r} is already in SRC_URI, with different parameters: {1!r}, not adding'.format(source_uri, existing))
+            else:
+                logger.warn('{0!r} is already in SRC_URI, not adding'.format(source_uri))
+        else:
+            extralines.append('SRC_URI += {0}'.format(source_uri))
+        copyfiles[newfile] = srcfile
+
+    oe.recipeutils.bbappend_recipe(rd, args.destlayer, copyfiles, None, wildcardver=args.wildcard_version, machine=args.machine, extralines=extralines)
+
+
+def appendsrcfiles(parser, args):
+    recipedata = _parse_recipe(args.recipe, tinfoil)
+    if not recipedata:
+        parser.error('RECIPE must be a valid recipe name')
+
+    files = dict((f, os.path.join(args.destdir, os.path.basename(f)))
+                 for f in args.files)
+    return appendsrc(args, files, recipedata)
+
+
+def appendsrcfile(parser, args):
+    recipedata = _parse_recipe(args.recipe, tinfoil)
+    if not recipedata:
+        parser.error('RECIPE must be a valid recipe name')
+
+    if not args.destfile:
+        args.destfile = os.path.basename(args.file)
+    elif args.destfile.endswith('/'):
+        args.destfile = os.path.join(args.destfile, os.path.basename(args.file))
+
+    return appendsrc(args, {args.file: args.destfile}, recipedata)
+
+
+def layer(layerpath):
+    if not os.path.exists(os.path.join(layerpath, 'conf', 'layer.conf')):
+        raise argparse.ArgumentTypeError('{0!r} must be a path to a valid layer'.format(layerpath))
+    return layerpath
+
+
+def existing_path(filepath):
+    if not os.path.exists(filepath):
+        raise argparse.ArgumentTypeError('{0!r} must be an existing path'.format(filepath))
+    return filepath
+
+
+def existing_file(filepath):
+    filepath = existing_path(filepath)
+    if os.path.isdir(filepath):
+        raise argparse.ArgumentTypeError('{0!r} must be a file, not a directory'.format(filepath))
+    return filepath
+
+
+def destination_path(destpath):
+    if os.path.isabs(destpath):
+        raise argparse.ArgumentTypeError('{0!r} must be a relative path, not absolute'.format(destpath))
+    return destpath
+
+
+def target_path(targetpath):
+    if not os.path.isabs(targetpath):
+        raise argparse.ArgumentTypeError('{0!r} must be an absolute path, not relative'.format(targetpath))
+    return targetpath
+
+
+def register_commands(subparsers):
+    common = argparse.ArgumentParser(add_help=False)
+    common.add_argument('-m', '--machine', help='Make bbappend changes specific to a machine only', metavar='MACHINE')
+    common.add_argument('-w', '--wildcard-version', help='Use wildcard to make the bbappend apply to any recipe version', action='store_true')
+    common.add_argument('destlayer', metavar='DESTLAYER', help='Base directory of the destination layer to write the bbappend to', type=layer)
+
+    parser_appendfile = subparsers.add_parser('appendfile',
+                                              parents=[common],
+                                              help='Create/update a bbappend to replace a target file',
+                                              description='Creates a bbappend (or updates an existing one) to replace the specified file that appears in the target system, determining the recipe that packages the file and the required path and name for the bbappend automatically. Note that the ability to determine the recipe packaging a particular file depends upon the recipe\'s do_packagedata task having already run prior to running this command (which it will have when the recipe has been built successfully, which in turn will have happened if one or more of the recipe\'s packages is included in an image that has been built successfully).')
+    parser_appendfile.add_argument('targetpath', help='Path to the file to be replaced (as it would appear within the target image, e.g. /etc/motd)', type=target_path)
+    parser_appendfile.add_argument('newfile', help='Custom file to replace the target file with', type=existing_file)
+    parser_appendfile.add_argument('-r', '--recipe', help='Override recipe to apply to (default is to find which recipe already packages the file)')
+    parser_appendfile.set_defaults(func=appendfile, parserecipes=True)
+
+    common_src = argparse.ArgumentParser(add_help=False, parents=[common])
+    common_src.add_argument('-W', '--workdir', help='Unpack file into WORKDIR rather than S', dest='use_workdir', action='store_true')
+    common_src.add_argument('recipe', metavar='RECIPE', help='Override recipe to apply to')
+
+    parser = subparsers.add_parser('appendsrcfiles',
+                                   parents=[common_src],
+                                   help='Create/update a bbappend to add or replace source files',
+                                   description='Creates a bbappend (or updates an existing one) to add or replace the specified file in the recipe sources, either those in WORKDIR or those in the source tree. This command lets you specify multiple files with a destination directory, so cannot specify the destination filename. See the `appendsrcfile` command for the other behavior.')
+    parser.add_argument('-D', '--destdir', help='Destination directory (relative to S or WORKDIR, defaults to ".")', default='', type=destination_path)
+    parser.add_argument('files', nargs='+', metavar='FILE', help='File(s) to be added to the recipe sources (WORKDIR or S)', type=existing_path)
+    parser.set_defaults(func=lambda a: appendsrcfiles(parser, a), parserecipes=True)
+
+    parser = subparsers.add_parser('appendsrcfile',
+                                   parents=[common_src],
+                                   help='Create/update a bbappend to add or replace a source file',
+                                   description='Creates a bbappend (or updates an existing one) to add or replace the specified files in the recipe sources, either those in WORKDIR or those in the source tree. This command lets you specify the destination filename, not just destination directory, but only works for one file. See the `appendsrcfiles` command for the other behavior.')
+    parser.add_argument('file', metavar='FILE', help='File to be added to the recipe sources (WORKDIR or S)', type=existing_path)
+    parser.add_argument('destfile', metavar='DESTFILE', nargs='?', help='Destination path (relative to S or WORKDIR, optional)', type=destination_path)
+    parser.set_defaults(func=lambda a: appendsrcfile(parser, a), parserecipes=True)
diff --git a/scripts/lib/recipetool/create.py b/scripts/lib/recipetool/create.py
new file mode 100644
index 0000000..1f85fcf
--- /dev/null
+++ b/scripts/lib/recipetool/create.py
@@ -0,0 +1,963 @@
+# Recipe creation tool - create command plugin
+#
+# Copyright (C) 2014-2016 Intel Corporation
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import sys
+import os
+import argparse
+import glob
+import fnmatch
+import re
+import json
+import logging
+import scriptutils
+import urlparse
+import hashlib
+
+logger = logging.getLogger('recipetool')
+
+tinfoil = None
+plugins = None
+
+def plugin_init(pluginlist):
+    # Take a reference to the list so we can use it later
+    global plugins
+    plugins = pluginlist
+
+def tinfoil_init(instance):
+    global tinfoil
+    tinfoil = instance
+
+class RecipeHandler(object):
+    recipelibmap = {}
+    recipeheadermap = {}
+    recipecmakefilemap = {}
+    recipebinmap = {}
+
+    @staticmethod
+    def load_libmap(d):
+        '''Load library->recipe mapping'''
+        import oe.package
+
+        if RecipeHandler.recipelibmap:
+            return
+        # First build up library->package mapping
+        shlib_providers = oe.package.read_shlib_providers(d)
+        libdir = d.getVar('libdir', True)
+        base_libdir = d.getVar('base_libdir', True)
+        libpaths = list(set([base_libdir, libdir]))
+        libname_re = re.compile('^lib(.+)\.so.*$')
+        pkglibmap = {}
+        for lib, item in shlib_providers.iteritems():
+            for path, pkg in item.iteritems():
+                if path in libpaths:
+                    res = libname_re.match(lib)
+                    if res:
+                        libname = res.group(1)
+                        if not libname in pkglibmap:
+                            pkglibmap[libname] = pkg[0]
+                    else:
+                        logger.debug('unable to extract library name from %s' % lib)
+
+        # Now turn it into a library->recipe mapping
+        pkgdata_dir = d.getVar('PKGDATA_DIR', True)
+        for libname, pkg in pkglibmap.iteritems():
+            try:
+                with open(os.path.join(pkgdata_dir, 'runtime', pkg)) as f:
+                    for line in f:
+                        if line.startswith('PN:'):
+                            RecipeHandler.recipelibmap[libname] = line.split(':', 1)[-1].strip()
+                            break
+            except IOError as ioe:
+                if ioe.errno == 2:
+                    logger.warn('unable to find a pkgdata file for package %s' % pkg)
+                else:
+                    raise
+
+        # Some overrides - these should be mapped to the virtual
+        RecipeHandler.recipelibmap['GL'] = 'virtual/libgl'
+        RecipeHandler.recipelibmap['EGL'] = 'virtual/egl'
+        RecipeHandler.recipelibmap['GLESv2'] = 'virtual/libgles2'
+
+    @staticmethod
+    def load_devel_filemap(d):
+        '''Build up development file->recipe mapping'''
+        if RecipeHandler.recipeheadermap:
+            return
+        pkgdata_dir = d.getVar('PKGDATA_DIR', True)
+        includedir = d.getVar('includedir', True)
+        cmakedir = os.path.join(d.getVar('libdir', True), 'cmake')
+        for pkg in glob.glob(os.path.join(pkgdata_dir, 'runtime', '*-dev')):
+            with open(os.path.join(pkgdata_dir, 'runtime', pkg)) as f:
+                pn = None
+                headers = []
+                cmakefiles = []
+                for line in f:
+                    if line.startswith('PN:'):
+                        pn = line.split(':', 1)[-1].strip()
+                    elif line.startswith('FILES_INFO:'):
+                        val = line.split(':', 1)[1].strip()
+                        dictval = json.loads(val)
+                        for fullpth in sorted(dictval):
+                            if fullpth.startswith(includedir) and fullpth.endswith('.h'):
+                                headers.append(os.path.relpath(fullpth, includedir))
+                            elif fullpth.startswith(cmakedir) and fullpth.endswith('.cmake'):
+                                cmakefiles.append(os.path.relpath(fullpth, cmakedir))
+                if pn and headers:
+                    for header in headers:
+                        RecipeHandler.recipeheadermap[header] = pn
+                if pn and cmakefiles:
+                    for fn in cmakefiles:
+                        RecipeHandler.recipecmakefilemap[fn] = pn
+
+    @staticmethod
+    def load_binmap(d):
+        '''Build up native binary->recipe mapping'''
+        if RecipeHandler.recipebinmap:
+            return
+        sstate_manifests = d.getVar('SSTATE_MANIFESTS', True)
+        staging_bindir_native = d.getVar('STAGING_BINDIR_NATIVE', True)
+        build_arch = d.getVar('BUILD_ARCH', True)
+        fileprefix = 'manifest-%s-' % build_arch
+        for fn in glob.glob(os.path.join(sstate_manifests, '%s*-native.populate_sysroot' % fileprefix)):
+            with open(fn, 'r') as f:
+                pn = os.path.basename(fn).rsplit('.', 1)[0][len(fileprefix):]
+                for line in f:
+                    if line.startswith(staging_bindir_native):
+                        prog = os.path.basename(line.rstrip())
+                        RecipeHandler.recipebinmap[prog] = pn
+
+    @staticmethod
+    def checkfiles(path, speclist, recursive=False):
+        results = []
+        if recursive:
+            for root, _, files in os.walk(path):
+                for fn in files:
+                    for spec in speclist:
+                        if fnmatch.fnmatch(fn, spec):
+                            results.append(os.path.join(root, fn))
+        else:
+            for spec in speclist:
+                results.extend(glob.glob(os.path.join(path, spec)))
+        return results
+
+    @staticmethod
+    def handle_depends(libdeps, pcdeps, deps, outlines, values, d):
+        if pcdeps:
+            recipemap = read_pkgconfig_provides(d)
+        if libdeps:
+            RecipeHandler.load_libmap(d)
+
+        ignorelibs = ['socket']
+        ignoredeps = ['gcc-runtime', 'glibc', 'uclibc', 'musl', 'tar-native', 'binutils-native', 'coreutils-native']
+
+        unmappedpc = []
+        pcdeps = list(set(pcdeps))
+        for pcdep in pcdeps:
+            if isinstance(pcdep, basestring):
+                recipe = recipemap.get(pcdep, None)
+                if recipe:
+                    deps.append(recipe)
+                else:
+                    if not pcdep.startswith('$'):
+                        unmappedpc.append(pcdep)
+            else:
+                for item in pcdep:
+                    recipe = recipemap.get(pcdep, None)
+                    if recipe:
+                        deps.append(recipe)
+                        break
+                else:
+                    unmappedpc.append('(%s)' % ' or '.join(pcdep))
+
+        unmappedlibs = []
+        for libdep in libdeps:
+            if isinstance(libdep, tuple):
+                lib, header = libdep
+            else:
+                lib = libdep
+                header = None
+
+            if lib in ignorelibs:
+                logger.debug('Ignoring library dependency %s' % lib)
+                continue
+
+            recipe = RecipeHandler.recipelibmap.get(lib, None)
+            if recipe:
+                deps.append(recipe)
+            elif recipe is None:
+                if header:
+                    RecipeHandler.load_devel_filemap(d)
+                    recipe = RecipeHandler.recipeheadermap.get(header, None)
+                    if recipe:
+                        deps.append(recipe)
+                    elif recipe is None:
+                        unmappedlibs.append(lib)
+                else:
+                    unmappedlibs.append(lib)
+
+        deps = set(deps).difference(set(ignoredeps))
+
+        if unmappedpc:
+            outlines.append('# NOTE: unable to map the following pkg-config dependencies: %s' % ' '.join(unmappedpc))
+            outlines.append('#       (this is based on recipes that have previously been built and packaged)')
+
+        if unmappedlibs:
+            outlines.append('# NOTE: the following library dependencies are unknown, ignoring: %s' % ' '.join(list(set(unmappedlibs))))
+            outlines.append('#       (this is based on recipes that have previously been built and packaged)')
+
+        if deps:
+            values['DEPENDS'] = ' '.join(deps)
+
+    def genfunction(self, outlines, funcname, content, python=False, forcespace=False):
+        if python:
+            prefix = 'python '
+        else:
+            prefix = ''
+        outlines.append('%s%s () {' % (prefix, funcname))
+        if python or forcespace:
+            indent = '    '
+        else:
+            indent = '\t'
+        addnoop = not python
+        for line in content:
+            outlines.append('%s%s' % (indent, line))
+            if addnoop:
+                strippedline = line.lstrip()
+                if strippedline and not strippedline.startswith('#'):
+                    addnoop = False
+        if addnoop:
+            # Without this there'll be a syntax error
+            outlines.append('%s:' % indent)
+        outlines.append('}')
+        outlines.append('')
+
+    def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
+        return False
+
+
+def validate_pv(pv):
+    if not pv or '_version' in pv.lower() or pv[0] not in '0123456789':
+        return False
+    return True
+
+def determine_from_filename(srcfile):
+    """Determine name and version from a filename"""
+    part = ''
+    if '.tar.' in srcfile:
+        namepart = srcfile.split('.tar.')[0].lower()
+    else:
+        namepart = os.path.splitext(srcfile)[0].lower()
+    splitval = namepart.rsplit('_', 1)
+    if len(splitval) == 1:
+        splitval = namepart.rsplit('-', 1)
+    pn = splitval[0].replace('_', '-')
+    if len(splitval) > 1:
+        if splitval[1][0] in '0123456789':
+            pv = splitval[1]
+        else:
+            pn = '-'.join(splitval).replace('_', '-')
+            pv = None
+    else:
+        pv = None
+    return (pn, pv)
+
+def determine_from_url(srcuri):
+    """Determine name and version from a URL"""
+    pn = None
+    pv = None
+    parseres = urlparse.urlparse(srcuri.lower().split(';', 1)[0])
+    if parseres.path:
+        if 'github.com' in parseres.netloc:
+            res = re.search(r'.*/(.*?)/archive/(.*)-final\.(tar|zip)', parseres.path)
+            if res:
+                pn = res.group(1).strip().replace('_', '-')
+                pv = res.group(2).strip().replace('_', '.')
+            else:
+                res = re.search(r'.*/(.*?)/archive/v?(.*)\.(tar|zip)', parseres.path)
+                if res:
+                    pn = res.group(1).strip().replace('_', '-')
+                    pv = res.group(2).strip().replace('_', '.')
+        elif 'bitbucket.org' in parseres.netloc:
+            res = re.search(r'.*/(.*?)/get/[a-zA-Z_-]*([0-9][0-9a-zA-Z_.]*)\.(tar|zip)', parseres.path)
+            if res:
+                pn = res.group(1).strip().replace('_', '-')
+                pv = res.group(2).strip().replace('_', '.')
+
+        if not pn and not pv:
+            srcfile = os.path.basename(parseres.path.rstrip('/'))
+            pn, pv = determine_from_filename(srcfile)
+
+    logger.debug('Determined from source URL: name = "%s", version = "%s"' % (pn, pv))
+    return (pn, pv)
+
+def supports_srcrev(uri):
+    localdata = bb.data.createCopy(tinfoil.config_data)
+    # This is a bit sad, but if you don't have this set there can be some
+    # odd interactions with the urldata cache which lead to errors
+    localdata.setVar('SRCREV', '${AUTOREV}')
+    bb.data.update_data(localdata)
+    fetcher = bb.fetch2.Fetch([uri], localdata)
+    urldata = fetcher.ud
+    for u in urldata:
+        if urldata[u].method.supports_srcrev():
+            return True