diff options
Diffstat (limited to 'sys-kernel/debian-sources-lts/files/config-extract')
| -rwxr-xr-x | sys-kernel/debian-sources-lts/files/config-extract | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/sys-kernel/debian-sources-lts/files/config-extract b/sys-kernel/debian-sources-lts/files/config-extract new file mode 100755 index 00000000..fe15f548 --- /dev/null +++ b/sys-kernel/debian-sources-lts/files/config-extract @@ -0,0 +1,216 @@ +#!/usr/bin/python2 + +import os,sys,re +import getopt + +re_head = re.compile('^binary-arch_(.*)_real::') +re_flav = re.compile('binary-arch-flavour') +re_item = re.compile("[A-Z_]*='[^']*'") + +try: + f=open("debian/rules.gen","r") +except: + print "Unable to open debian/rules.gen; can't continue." + sys.exit(1) +lines=f.readlines() +f.close() + +line=0 + +configlist = [] +configdict = {} + +# scan Debian rules.gen file and gather all variable data into a more useable format: + +while line < len(lines): + head_match = re_head.match(lines[line]) + if not head_match: + line += 1 + continue + config_name = head_match.group(1) + line += 1 + if not re_flav.findall(lines[line]): + continue + lsplit = re_item.findall(lines[line]) + groovydict = {} + for item in lsplit: + kv = item.split("=",1) + if len(kv) < 2: + continue + groovydict[kv[0]] = kv[1][1:-1] + configlist.append(config_name) + configdict[config_name] = groovydict + line += 1 + +# We will organize the arch, featureset and flavors into cascading lists so +# that we can present a nice clean chart of what's available to the user: + +archdict = {} + +for config in configlist: + cs = config.split("_") + if not cs[0] in archdict: + archdict[cs[0]] = { } + if cs[1] == "none": + cs[1] = None + if cs[1] not in archdict[cs[0]]: + archdict[cs[0]][cs[1]] = [] + archdict[cs[0]][cs[1]].append(cs[2]) + +arches = archdict.keys() +arches.sort() + +features = [ None ] +for arch in arches: + for flav in archdict[arch]: + if flav not in features: + features.append(flav) + +PROG="config-extract" +def usage(): + print """This work is free software. + +Copyright 2011 Funtoo Technologies. You can redistribute and/or modify it under +the terms of the GNU General Public License version 3 as published by the Free +Software Foundation. Alternatively you may (at your option) use any other +license that has been publicly approved for use with this program by Funtoo +Technologies (or its successors, if any.) + +usage: %s [options] arch [featureset] [subarch] + + -h --help print this usage and exit + -l --list list all available kernel configurations + -o --outfile specify kernel config outfile -- + defaults to .config in current directory + [featureset] defaults to "none" if not specified + [subarch] defaults to the only one available; otherwise required + +This program was written by Daniel Robbins for Funtoo Linux, for the purpose of +easily and conveniently extracting Debian kernel configurations. To see a nice +list of all available kernel configurations, use the --list option. + +Debian's kernel configs are specified internally in arch_featureset_flavor +format, such as: "amd64_openvz_amd64". The featureset typically describes an +optional kernel configuration such as "xen" or "openvz", while the flavor in +Debian terminology typically refers to the sub-architecture of the CPU. + +When using this command, you must specify an arch. A featureset of "none" is +assumed unless you specify one, and by default this program will pick the only +available subarch if there is only one to choose from. If not, you will need to +pick one (and the program will remind you to do this.) + +The kernel configuration will be written to ".config" in the current directory, +or the location you specified using the -o/--outfile option. +""" % PROG + sys.exit(2) + +try: + opts, args = getopt.getopt(sys.argv[1:], "o:hl", ["help", "list","outfile="]) +except getopt.GetoptError, err: + print str(err) + usage() + +mode="run" +outfile=None +for o,a in opts: + if o in ("-h", "--help"): + usage() + elif o in ("-l", "--list"): + mode="list" + elif o in ("-o", "--outfile"): + outfile = a + else: + assert False, "Unhandled option" +if mode == "run": + if len(args) < 1 or len(args) > 3: + if len(args) == 0: + print "Please specify an arch - one of: "+", ".join(arches) + sys.exit(2) + else: + print "Too many arguments." + usage() + arch = args[0] + if outfile == None: + outfile = os.path.join(os.getcwd(),".config") + featureset = None + subarch = None + if len(args) == 3: + featureset = args[1] + subarch = args[2] + elif len(args) == 2: + featureset = args[1] + +# print out optimized list of available kernel configurations: + +if mode=="list": + print + for flav in features: + label = flav + if label == None: + label = "standard" + print "====== %s featureset ======" % label + print + for arch in arches: + if flav in archdict[arch]: + if len(archdict[arch][flav]) == 1: + print arch.rjust(12) + else: + flavlist = archdict[arch][flav] + flavlist.sort() + variants = ", ".join(flavlist) + print arch.rjust(12) + ":", variants + print + sys.exit(0) + +# featureset defaults to None. + +if featureset not in archdict[arch]: + print "Error: There is no '%s' featureset kernel config for arch '%s'. Exiting." % ( featureset, arch ) + sys.exit(2) + +# If a subarch is not specified (None), then we will auto-pick the subarch if only one is available. +# Debian often has an "amd64" subarch for the "amd64" arch, rather than "none" as I might expect: + +if subarch == None: + if len(archdict[arch][featureset]) == 1: + subarch = archdict[arch][featureset][0] + else: + print "Error: there is more than one 'sub-architecture' for this arch." + print "Please specify one of the following subarches as a secondary argument:" + print ", ".join(archdict[arch][featureset]) + sys.exit(2) +else: + if subarch not in archdict[arch][featureset]: + print "Error: specified sub-architecture '%s' is not available for this arch. Exiting." % subarch + sys.exit(2) + +# We've done all our arg processing, now let's construct the master_key that we will use to look up the +# proper settings to pass to Debian's debian/bin/kconfig.py command: + +master_key=arch +if featureset == None: + master_key += "_none" +else: + master_key += "_%s" % featureset +if subarch == None: + master_key += "_none" +else: + master_key += "_%s" % subarch +if master_key not in configdict: + print "Master key lookup failed; can't continue. Please report this bug." + sys.exit(1) +if "KCONFIG" not in configdict[master_key]: + print "Unable to find KCONFIG option; can't continue. Please report this bug." + sys.exit(1) +cmd = "python2 debian/bin/kconfig.py '%s' %s" % ( outfile, configdict[master_key]["KCONFIG"] ) +if "KCONFIG_OPTIONS" in configdict[master_key]: + cmd += " %s" % configdict[master_key]["KCONFIG_OPTIONS"] +os.environ["PYTHONPATH"] = "debian/lib/python" +retval = os.system(cmd) +if retval == 0: + print "Wrote %s kernel configuration to %s." % ( master_key, outfile ) + sys.exit(0) +else: + print "There was an error extracting the Debian kernel config." + sys.exit(1) + |