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 # abstract representation of rules file
  15 class RulesFile:
  16         def __init__(self):
  17                 self.env = {}
  18                 self.dh = []
  19                 self.rules = OrderedDict()
  20
  21         def env2str(self):
  22                 res = ""
  23                 for name in self.env: # we rely on the name being sane (i.e., no special characters)
  24                         val = self.env[name]
  25                         assert val.find("'") < 0 # ' is not supported
  26                         if len(res): res += " "
  27                         res += name+"='"+val+"'"
  28                 return res
  29
  30         def write(self, f):
  31                 print >>f, "#!/usr/bin/make -f"
  32                 print >>f, ""
  33                 print >>f, "%:"
  34                 print >>f, '\t'+self.env2str()+' dh $@ '+safeCall(*self.dh)
  35                 for rule in self.rules:
  36                         print >>f, ""
  37                         print >>f, "override_dh_"+rule+":"
  38                         for line in self.rules[rule]:
  39                                 print >>f, "\t"+line
  40
  41 # build-system specific part of rules file
  42 def cmakeRules(config):
  43         buildDir = config.get('buildDir', 'build.dir') # "build" is not a good idea, as that's also the name of a target...
  44         srcDir = os.getcwd()
  45         r = RulesFile()
  46         r.dh += ["--buildsystem=cmake", "--builddirectory="+buildDir] # dh parameters
  47         r.rules['auto_configure'] = [
  48                 safeCall("mkdir", "-p", buildDir),
  49                 safeCall("cd", buildDir) + " && " +
  50                   safeCall("cmake", srcDir, "-DCMAKE_INSTALL_PREFIX=/usr", *config.get('cmakeParameters', []))
  51         ]
  52         r.rules['auto_clean'] = [safeCall('rm', '-f', os.path.join(buildDir, 'CMakeCache.txt'))] # clean old cmake cache
  53         return r
  54
  55 def automakeRules(config):
  56         # "build" is what we are building *on*, and "host" is what we are building *for* (and GNU is weird...)
  57         # also, we don't really support cross-building... ;-) (to do, we'd have to write shell code that checks whether BUILD_GNU_TYPE
  58         #  and HOST_GNU_TYPE are equal, and if they are not, add a --host parameter)
  59         r = RulesFile()
  60         r.dh += ["--buildsystem=autoconf"]
  61         r.rules['auto_configure'] = [
  62                 'BUILD_TYPE=$$(dpkg-architecture -qDEB_BUILD_GNU_TYPE) && ' + # doing the expansion beforehand ensures that we cancel if it fails
  63                 'MULTIARCH=$$(dpkg-architecture -qDEB_HOST_MULTIARCH) && '+
  64                         './configure --build=$$BUILD_TYPE '+ # do the escape manually here so we can use the variables (there's no user-controlled string in here anyway)
  65                         '--prefix=/usr --includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info '+
  66                         '--libdir=/usr/lib/$$MULTIARCH --libexecdir=/usr/lib/$$MULTIARCH '+
  67                         '--sysconfdir=/etc --localstatedir=/var '+
  68                         safeCall(*config.get('automakeParameters', []))
  69         ]
  70         r.rules['auto_clean'] = ['rm -f config.status'] # do not re-use old configuration (no need for escaping here, obviously)
  71         return r
  72
  73 # utility functions
  74 def commandInBuildEnv(config, command):
  75         schroot = config.get('schroot')
  76         if schroot is not None: command = ['schroot', '-c', schroot, '--'] + command
  77         return command
  78
  79 def getArchitecture(config):
  80         cmd = commandInBuildEnv(config, ['dpkg-architecture', '-qDEB_HOST_ARCH'])
  81         p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
  82         res = p.communicate()[0] # get only stdout
  83         if p.returncode != 0: raise Exception("Querying dpkg for the architecture failed")
  84         return res[0:len(res)-1] # chop of the \n at the end
  85
  86 def writeDependency(f, name, list):
  87         if len(list):
  88                 print >>f, name+": "+', '.join(list)
  89
  90 # actual work functions
  91 def createDebianFiles(config):
  92         sourceName = config['sourceName']
  93         binaryName = config.get('binaryName', sourceName+'-local')
  94         name = config.get('name', os.getenv('USER')) # os.getlogin() fails in minimal chroots
  95         email = config.get('email', os.getenv('USER')+'@'+os.uname()[1]) # user@hostname
  96         debDir = os.path.expanduser(config['debDir'])
  97         buildSystem = config['buildSystem']
  98         version = config['version']
  99         dbgPackage = config.get('dbgPackage', False)
 100         parallelJobs = int(config.get('parallelJobs', 2))
 101         packageArchitecture = config.get('architecture', 'any')
 102         # we return the list of files generated, so we need to know the architecture
 103         arch = getArchitecture(config)
 104         files = []
 105         # create folders
 106         if os.path.exists('debian'): raise Exception('debian folder already exists?')
 107         os.mkdir('debian')
 108         os.mkdir('debian/source')
 109         if not os.path.exists(debDir): os.mkdir(debDir)
 110         # source format file
 111         with open('debian/source/format', 'w') as f:
 112                 print >>f, "3.0 (native)"
 113         # compat file
 114         with open('debian/compat', 'w') as f:
 115                 print >>f, "9"
 116         # copyright file
 117         with open('debian/copyright', 'w') as f:
 118                 print >>f, "Auto-generated by auto-debuild, not suited for distribution"
 119         # changelog file
 120         with open('debian/changelog', 'w') as f:
 121                 print >>f, sourceName,"("+version+")","UNRELEASED; urgency=low"
 122                 print >>f, ""
 123                 print >>f, "  * Auto-generated by auto-debuild"
 124                 print >>f, ""
 125                 print >>f, " --",name,"<"+email+">  "+time.strftime('%a, %d %b %Y %H:%M:%S %z')
 126         # control file
 127         with open('debian/control', 'w') as f:
 128                 print >>f, "Source:",sourceName
 129                 print >>f, "Section:",config.get('section', 'misc')
 130                 print >>f, "Priority: extra"
 131                 print >>f, "Maintainer: %s <%s>" % (name, email)
 132                 writeDependency(f, 'Build-Depends', ["debhelper (>= 9)"] + config.get('buildDepends', []))
 133                 print >>f, "Standards-Version: 3.9.3"
 134                 print >>f, ""
 135                 print >>f, "Package:",binaryName
 136                 print >>f, "Architecture:",packageArchitecture
 137                 writeDependency(f, "Pre-Depends", ["${misc:Pre-Depends}"] + config.get('binaryPreDepends', []))
 138                 writeDependency(f, "Depends", ["${shlibs:Depends}", "${misc:Depends}"] + config.get('binaryDepends', []))
 139                 writeDependency(f, "Recommends", config.get('binaryRecommends', []))
 140                 writeDependency(f, "Provides", config.get('binaryProvides', [sourceName]))
 141                 print >>f, "Description:",sourceName,"(auto-debuild)"
 142                 print >>f, " Package auto-generated by auto-debuild."
 143                 files.append(os.path.join(debDir, "%s_%s_%s.deb" % (binaryName, version, arch)))
 144                 if dbgPackage:
 145                         print >>f, ""
 146                         print >>f, "Package:",binaryName+"-dbg"
 147                         print >>f, "Architecture:",packageArchitecture
 148                         writeDependency(f, "Depends", ["${misc:Depends}", binaryName+" (= ${binary:Version})"])
 149                         print >>f, "Description:",sourceName,"debug smbols (auto-debuild)"
 150                         print >>f, " Package containing debug symbols for "+sourceName+", auto-generated by auto-debuild."
 151                         files.append(os.path.join(debDir, "%s-dbg_%s_%s.deb" % (binaryName, version, arch)))
 152         # install file
 153         with open('debian/'+binaryName+'.install', 'w') as f:
 154                 for line in config.get('binaryInstallFiles', []):
 155                         if line.startswith('/'): # a file from within the package, not from the source tree
 156                                 line = 'debian/'+binaryName+line
 157                         print >>f, line
 158         # rules file: build system specific
 159         with open('debian/rules', 'w') as f:
 160                 # get rule file for build system: may only touch auto_config and auto_clean rules and the dh options
 161                 if buildSystem == 'cmake':
 162                         r = cmakeRules(config)
 163                 elif buildSystem == 'automake':
 164                         r = automakeRules(config)
 165                 else:
 166                         raise Exception("Invalid build system "+buildSystem)
 167                 # global rules
 168                 r.env["DEB_BUILD_OPTIONS"] = 'parallel='+str(parallelJobs)
 169                 if not dbgPackage:
 170                         # disable debug information
 171                         r.env["DEB_CFLAGS_APPEND"] = '-g0'
 172                         r.env["DEB_CXXFLAGS_APPEND"] = '-g0'
 173                 r.dh += ['--parallel']
 174                 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...)
 175                 r.rules['auto_test'] = []
 176                 # installation rule
 177                 r.rules['auto_install'] = [safeCall('dh_auto_install', '--destdir=debian/'+binaryName)] # install everything into the binary package
 178                 if 'binarySkipFiles' in config:
 179                         r.rules['auto_install'].append(safeCall('cd', 'debian/'+binaryName) + " && " +
 180                                 safeCall('rm', *config['binarySkipFiles']))
 181                 # for debug packages
 182                 if dbgPackage:
 183                         r.rules['strip'] = [safeCall('dh_strip', '--dbg-package='+binaryName+"-dbg")] # put debug files in appropriate package
 184                         r.rules['installdocs'] = [safeCall('dh_installdocs', '--link-doc='+binaryName)] # make the doc folder of the dbg package a symlink
 185                 # wait after configuration?
 186                 if config.get('waitAfterConfig', False):
 187                         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...
 188                 # dump it to a file
 189                 r.write(f)
 190         mode = os.stat('debian/rules').st_mode
 191         os.chmod('debian/rules', mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH)
 192         # return list of files that will be created
 193         return files
 194
 195 def buildDebianPackage(config):
 196         commands = ['dpkg-checkbuilddeps', 'debian/rules clean', 'debian/rules build', 'fakeroot debian/rules binary', 'debian/rules clean']
 197         command = ['bash', '-c', ' && '.join(commands)] # make it all one command, so we don't have to open and close the chroot too often
 198         subprocess.check_call(commandInBuildEnv(config, command))
 199         shutil.rmtree('debian') # it only contains what we just created
 200
 201 ###################################################################
 202 # if we are called directly as script
 203 if __name__ == "__main__":
 204         import imp
 205         # get config
 206         config = imp.load_source('config', 'auto-debuild.conf').__dict__
 207         os.remove('auto-debuild.confc')
 208         # generate debian files
 209         if os.path.exists('debian'):
 210                 if raw_input("A debian folder already exists, to you want to remove it (y/N)? ").lower() != "y":
 211                         sys.exit(1)
 212                 shutil.rmtree('debian')
 213         files = createDebianFiles(config)
 214         # check if a file is overwritten
 215         for file in files:
 216                 if os.path.exists(file):
 217                         if raw_input("Do you want to overwrite %s (y/N)? " % file).lower() != "y":
 218                                 sys.exit(1)
 219         # run compilation
 220         buildDebianPackage(config)
 221         # install files
 222         print "Installing created deb files..."
 223         subprocess.check_call(['sudo', 'dpkg', '--install'] + files)