auto_debuild.py

   1 #!/usr/bin/python
   2 import os, shutil, stat, time, subprocess, sys
   3 from collections import OrderedDict
   4
   5 # some utility functions
   6 def safeCall(*args):
   7         res = ""
   8         for arg in args:
   9                 assert arg.find("'") < 0 # ' is not supported
  10                 if len(res): res += " "
  11                 res += "'"+arg+"'"
  12         return res
  13
  14 # representation of a build system
  15 class BuildSystem:
  16         def __init__(self, ruleMaker, buildDepends = [], binaryDepends = []):
  17                 self.ruleMaker = ruleMaker
  18                 self.buildDepends = buildDepends
  19                 self.binaryDepends = binaryDepends
  20
  21 # abstract representation of rules file
  22 class RulesFile:
  23         def __init__(self):
  24                 self.env = {}
  25                 self.dh = []
  26                 self.dhWith = set()
  27                 self.rules = OrderedDict()
  28
  29         def env2str(self):
  30                 res = ""
  31                 for name in self.env: # we rely on the name being sane (i.e., no special characters)
  32                         val = self.env[name]
  33                         assert val.find("'") < 0 # ' is not supported
  34                         if len(res): res += " "
  35                         res += name+"='"+val+"'"
  36                 return res
  37
  38         def write(self, f):
  39                 print >>f, "#!/usr/bin/make -f"
  40                 print >>f, ""
  41                 print >>f, ".PHONY: build" # there may be a directory called "build"
  42                 print >>f, ""
  43                 print >>f, "build %:" # need to mention "build" here again explicitly
  44                 # write proper dh call
  45                 dh = self.dh
  46                 if self.dhWith:
  47                         dh.append('--with='+','.join(self.dhWith))
  48                 print >>f, '\t'+self.env2str()+' dh $@ '+safeCall(*dh)
  49                 # write remaining rules
  50                 for rule in self.rules:
  51                         print >>f, ""
  52                         print >>f, "override_dh_"+rule+":"
  53                         for line in self.rules[rule]:
  54                                 print >>f, "\t"+line
  55
  56 # rule-makers
  57 def cmakeRules(config):
  58         buildDir = config.get('buildDir', 'build')
  59         srcDir = os.getcwd()
  60         r = RulesFile()
  61         r.dh += ["--buildsystem=cmake", "--builddirectory="+buildDir] # dh parameters
  62         r.rules['auto_configure'] = [
  63                 safeCall("mkdir", "-p", buildDir),
  64                 safeCall("cd", buildDir) + " && " +
  65                   safeCall("cmake", srcDir, "-DCMAKE_INSTALL_PREFIX=/usr", *config.get('cmakeParameters', []))
  66         ]
  67         r.rules['auto_clean'] = [safeCall('rm', '-f', os.path.join(buildDir, 'CMakeCache.txt'))] # clean old cmake cache
  68         return r
  69
  70 def automakeRules(config):
  71         # "build" is what we are building *on*, and "host" is what we are building *for* (and GNU is weird...)
  72         # also, we don't really support cross-building... ;-) (to do, we'd have to write shell code that checks whether BUILD_GNU_TYPE
  73         #  and HOST_GNU_TYPE are equal, and if they are not, add a --host parameter)
  74         r = RulesFile()
  75         r.dh += ["--buildsystem=autoconf"]
  76         r.rules['auto_configure'] = [
  77                 'BUILD_TYPE=$$(dpkg-architecture -qDEB_BUILD_GNU_TYPE) && ' + # doing the expansion beforehand ensures that we cancel if it fails
  78                 'MULTIARCH=$$(dpkg-architecture -qDEB_HOST_MULTIARCH) && '+
  79                         './configure --build=$$BUILD_TYPE '+ # do the escape manually here so we can use the variables (there's no user-controlled string in here anyway)
  80                         '--prefix=/usr --includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info '+
  81                         '--libdir=/usr/lib/$$MULTIARCH --libexecdir=/usr/lib/$$MULTIARCH '+
  82                         '--sysconfdir=/etc --localstatedir=/var '+
  83                         safeCall(*config.get('automakeParameters', []))
  84         ]
  85         r.rules['auto_clean'] = ['rm -f config.status'] # do not re-use old configuration (no need for escaping here, obviously)
  86         return r
  87
  88 def pythonRules(config):
  89         r = RulesFile()
  90         r.dh += ["--buildsystem=python_distutils"]
  91         r.dhWith.add('python2')
  92         r.rules['auto_clean'] = [ # clean properly
  93                 'dh_auto_clean',
  94                 'rm -rf build'
  95         ]
  96         return r
  97
  98 # build systems
  99 buildSystems = {
 100         'cmake': BuildSystem(cmakeRules, ["cmake"]),
 101         'automake': BuildSystem(automakeRules),
 102         'python': BuildSystem(pythonRules, ["python-setuptools"], ["${python:Depends}"]),
 103 }
 104
 105 # utility functions
 106 def commandInBuildEnv(config, command):
 107         schroot = config.get('schroot')
 108         if schroot is not None: command = ['schroot', '-c', schroot, '--'] + command
 109         return command
 110
 111 def getArchitecture(config):
 112         cmd = commandInBuildEnv(config, ['dpkg-architecture', '-qDEB_HOST_ARCH'])
 113         p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
 114         res = p.communicate()[0] # get only stdout
 115         if p.returncode != 0: raise Exception("Querying dpkg for the architecture failed")
 116         return res[0:len(res)-1] # chop of the \n at the end
 117
 118 def writeDependency(f, name, list):
 119         if len(list):
 120                 print >>f, name+": "+', '.join(list)
 121
 122 # actual work functions
 123 def createDebianFiles(config):
 124         sourceName = config['sourceName']
 125         binaryName = config.get('binaryName', sourceName+'-local')
 126         name = config.get('name', os.getenv('USER')) # os.getlogin() fails in minimal chroots
 127         email = config.get('email', os.getenv('USER')+'@'+os.uname()[1]) # user@hostname
 128         debDir = os.path.expanduser(config['debDir'])
 129         buildSystem = buildSystems[config['buildSystem']] # get the data immediately
 130         version = config['version']
 131         dbgPackage = config.get('dbgPackage', False)
 132         parallelJobs = int(config.get('parallelJobs', 2))
 133         packageArchitecture = config.get('architecture', 'any')
 134         withPython2 = config.get('withPython2', False)
 135         if withPython2:
 136                 buildSystem.binaryDepends.append("${python:Depends}") # HACK, but it works: make sure dependencies on binary are added
 137         # we return the list of files generated, so we need to know the architecture
 138         arch = getArchitecture(config)
 139         files = []
 140         # create folders
 141         if os.path.exists('debian'): raise Exception('debian folder already exists?')
 142         os.mkdir('debian')
 143         os.mkdir('debian/source')
 144         if not os.path.exists(debDir): os.makedirs(debDir)
 145         # source format file
 146         with open('debian/source/format', 'w') as f:
 147                 print >>f, "3.0 (native)"
 148         # compat file
 149         with open('debian/compat', 'w') as f:
 150                 print >>f, "9"
 151         # copyright file
 152         with open('debian/copyright', 'w') as f:
 153                 print >>f, "Auto-generated by auto-debuild, not suited for distribution"
 154         # changelog file
 155         with open('debian/changelog', 'w') as f:
 156                 print >>f, sourceName,"("+version+")","UNRELEASED; urgency=low"
 157                 print >>f, ""
 158                 print >>f, "  * Auto-generated by auto-debuild"
 159                 print >>f, ""
 160                 print >>f, " --",name,"<"+email+">  "+time.strftime('%a, %d %b %Y %H:%M:%S %z')
 161         # control file
 162         with open('debian/control', 'w') as f:
 163                 print >>f, "Source:",sourceName
 164                 print >>f, "Section:",config.get('section', 'misc')
 165                 print >>f, "Priority: extra"
 166                 print >>f, "Maintainer: %s <%s>" % (name, email)
 167                 writeDependency(f, 'Build-Depends', ["debhelper (>= 9)"] + buildSystem.buildDepends + config.get('buildDepends', []))
 168                 print >>f, "Standards-Version: 3.9.3"
 169                 print >>f, ""
 170                 print >>f, "Package:",binaryName
 171                 print >>f, "Architecture:",packageArchitecture
 172                 writeDependency(f, "Pre-Depends", ["${misc:Pre-Depends}"] + config.get('binaryPreDepends', []))
 173                 writeDependency(f, "Depends", ["${shlibs:Depends}", "${misc:Depends}"] + buildSystem.binaryDepends +
 174                         config.get('binaryDepends', []))
 175                 writeDependency(f, "Recommends", config.get('binaryRecommends', []))
 176                 writeDependency(f, "Provides", config.get('binaryProvides', [sourceName]))
 177                 writeDependency(f, "Conflicts", config.get('binaryConflicts', []))
 178                 print >>f, "Description:",sourceName,"(auto-debuild)"
 179                 print >>f, " Package auto-generated by auto-debuild."
 180                 files.append(os.path.join(debDir, "%s_%s_%s.deb" % (binaryName, version, arch)))
 181                 if dbgPackage:
 182                         print >>f, ""
 183                         print >>f, "Package:",binaryName+"-dbg"
 184                         print >>f, "Architecture:",packageArchitecture
 185                         writeDependency(f, "Depends", ["${misc:Depends}", binaryName+" (= ${binary:Version})"])
 186                         print >>f, "Description:",sourceName,"debug smbols (auto-debuild)"
 187                         print >>f, " Package containing debug symbols for "+sourceName+", auto-generated by auto-debuild."
 188                         files.append(os.path.join(debDir, "%s-dbg_%s_%s.deb" % (binaryName, version, arch)))
 189         # install file
 190         with open('debian/'+binaryName+'.install', 'w') as f:
 191                 for line in config.get('binaryInstallFiles', []):
 192                         if line.startswith('/'): # a file from within the package, not from the source tree
 193                                 line = 'debian/'+binaryName+line
 194                         print >>f, line
 195         # maintainer scripts for alternatives
 196         if 'alternatives' in config:
 197                 with open('debian/'+binaryName+'.postinst', 'w') as f:
 198                         print >>f, "#!/bin/sh"
 199                         print >>f, "set -e"
 200                         print >>f, 'if [ "$1" = "configure" ]; then'
 201                         for alternative in config['alternatives']:
 202                                 print >>f, safeCall('update-alternatives', '--install', alternative['link'], alternative['name'], alternative['target'],
 203                                         str(alternative['priority']))
 204                         print >>f, 'fi'
 205                         print >>f, ''
 206                         print >>f, '#DEBHELPER#'
 207                         print >>f, ''
 208                         print >>f, 'exit 0'
 209                 with open('debian/'+binaryName+'.prerm', 'w') as f:
 210                         print >>f, "#!/bin/sh"
 211                         print >>f, "set -e"
 212                         print >>f, 'if [ "$1" = "remove" ]; then'
 213                         for alternative in config['alternatives']:
 214                                 print >>f, safeCall('update-alternatives', '--remove', alternative['name'], alternative['target'])
 215                         print >>f, 'fi'
 216                         print >>f, ''
 217                         print >>f, '#DEBHELPER#'
 218                         print >>f, ''
 219                         print >>f, 'exit 0'
 220         # rules file: build system specific
 221         with open('debian/rules', 'w') as f:
 222                 # get rule file for build system: may only touch auto_config and auto_clean rules and the dh options
 223                 r = buildSystem.ruleMaker(config)
 224                 # global rules
 225                 r.env["DEB_BUILD_OPTIONS"] = 'parallel='+str(parallelJobs)
 226                 if not dbgPackage:
 227                         # disable debug information
 228                         r.env["DEB_CFLAGS_APPEND"] = '-g0'
 229                         r.env["DEB_CXXFLAGS_APPEND"] = '-g0'
 230                 r.dh += ['--parallel']
 231                 if withPython2:
 232                         r.dhWith.add('python2')
 233                         r.rules['python2'] = ['dh_python2 --no-guessing-versions']
 234                 r.rules['builddeb'] = [safeCall('dh_builddeb', "--destdir="+debDir)] # passing this gobally to dh results in weird problems (like stuff being installed there, and not in the package...)
 235                 r.rules['auto_test'] = []
 236                 # installation rule
 237                 r.rules['auto_install'] = [safeCall('dh_auto_install', '--destdir=debian/'+binaryName)] # install everything into the binary package
 238                 if 'binarySkipFiles' in config:
 239                         r.rules['auto_install'].append(safeCall('cd', 'debian/'+binaryName) + " && " +
 240                                 safeCall('rm', *config['binarySkipFiles']))
 241                 # for debug packages
 242                 if dbgPackage:
 243                         r.rules['strip'] = [safeCall('dh_strip', '--dbg-package='+binaryName+"-dbg")] # put debug files in appropriate package
 244                         r.rules['installdocs'] = [safeCall('dh_installdocs', '--link-doc='+binaryName)] # make the doc folder of the dbg package a symlink
 245                 # wait after configuration?
 246                 if config.get('waitAfterConfig', False):
 247                         r.rules['auto_configure'].append("@"+safeCall('read', '-p', 'Configuration done. Hit "Enter" to build the package. ', 'DUMMY_VAR')) # if we run in dash, we need to tell it which variable to use for the result...
 248                 # dump it to a file
 249                 r.write(f)
 250         mode = os.stat('debian/rules').st_mode
 251         os.chmod('debian/rules', mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH)
 252         # return list of files that will be created
 253         return files
 254
 255 def buildDebianPackage(config):
 256         commands = ['dpkg-checkbuilddeps', 'debian/rules clean', 'debian/rules build', 'fakeroot debian/rules binary', 'debian/rules clean']
 257         command = ['bash', '-c', ' && '.join(commands)] # make it all one command, so we don't have to open and close the chroot too often
 258         subprocess.check_call(commandInBuildEnv(config, command))
 259         shutil.rmtree('debian') # it only contains what we just created
 260
 261 ###################################################################
 262 # if we are called directly as script
 263 if __name__ == "__main__":
 264         try:
 265                 import imp
 266                 # get config
 267                 config = imp.load_source('config', 'auto-debuild.conf').__dict__
 268                 os.remove('auto-debuild.confc')
 269                 # generate debian files
 270                 if os.path.exists('debian'):
 271                         if raw_input("A debian folder already exists, to you want to remove it (y/N)? ").lower() != "y":
 272                                 sys.exit(1)
 273                         shutil.rmtree('debian')
 274                 files = createDebianFiles(config)
 275                 # check if a file is overwritten
 276                 for file in files:
 277                         if os.path.exists(file):
 278                                 if raw_input("Do you want to overwrite %s (y/N)? " % file).lower() != "y":
 279                                         sys.exit(1)
 280                 # run compilation
 281                 buildDebianPackage(config)
 282                 # install files
 283                 print "Installing created deb files..."
 284                 subprocess.check_call(['sudo', 'dpkg', '--install'] + files)
 285         except (subprocess.CalledProcessError, KeyboardInterrupt) as e: # for some exceptions, a stackrace is usually pointless
 286                 print >> sys.stderr
 287                 print >> sys.stderr
 288                 if isinstance(e, KeyboardInterrupt): # str(e) would be the empty string
 289                         print >> sys.stderr, "Interruped by user"
 290                 else:
 291                         print >> sys.stderr, "Error during package creation: %s" % str(e)
 292                 print >> sys.stderr
 293                 sys.exit(1)