7523e537117c824dde3d33fb0f944c35baa92f2f
[auto-debuild.git] / auto_debuild.py
1 #!/usr/bin/python
2 import os, shutil, stat, time, subprocess, sys
3 from collections import OrderedDict
4
5 # a dict with some useful additional getters which can convert types and handle one-element lists like their single member
6 class ConfigDict(dict):
7         def getstr(self, name, default = None):
8                 if not name in self: return default
9                 val = self[name]
10                 if isinstance(val, list):
11                         if len(val) != 1: raise Exception('%s is a list, but it should not' % name)
12                         return val[0]
13                 else:
14                         return val
15         
16         def getint(self, name, default = None):
17                 return int(self.getstr(name, default))
18         
19         def getbool(self, name, default = None):
20                 val = self.getstr(name, default)
21                 if isinstance(val, bool): return val # already a bool
22                 return val.lower() in ('true', 'yes', 'on', '1')
23
24 # create a safe-to-call shell command from the array
25 def safeCall(*args):
26         res = ""
27         for arg in args:
28                 assert arg.find("'") < 0 # ' is not supported
29                 if len(res): res += " "
30                 res += "'"+arg+"'"
31         return res
32
33 # Load a section-less config file: maps parameter names to space-separated lists of strings (with shell quotation)
34 # Lines starting with spaces are continuation lines
35 def loadConfigFile(file):
36         import shlex
37         # read config file
38         linenr = 0
39         with open(file) as file:
40                 result = ConfigDict()
41                 curKey = None
42                 for line in file:
43                         linenr += 1
44                         isCont = len(line) and line[0].isspace() # remember if we were a continuation line
45                         if isCont and curKey is None:
46                                 raise Exception("Invalid config, line %d: Starting with continuation line" % linenr)
47                         line = line.strip()
48                         if not len(line) or line.startswith("#"): continue # skip empty and comment lines
49                         try:
50                                 if isCont:
51                                         # continuation line
52                                         result[curKey] += shlex.split(line)
53                                 else:
54                                         # option line
55                                         pos = line.index("=") # will raise exception when substring is not found
56                                         curKey = line[:pos].strip()
57                                         result[curKey] = shlex.split(line[pos+1:]) # shlex.split also strips
58                         except Exception:
59                                 raise Exception("Invalid config, line %d: Error parsing line (quoting issue?)" % linenr)
60         # add some convencience get functions
61         return result
62
63 # representation of a build system
64 class BuildSystem:
65         def __init__(self, ruleMaker, buildDepends = [], binaryDepends = []):
66                 self.ruleMaker = ruleMaker
67                 self.buildDepends = buildDepends
68                 self.binaryDepends = binaryDepends
69
70 # abstract representation of rules file
71 class RulesFile:
72         def __init__(self):
73                 self.env = {}
74                 self.dh = []
75                 self.dhWith = set()
76                 self.rules = OrderedDict()
77         
78         def env2str(self):
79                 res = ""
80                 for name in self.env: # we rely on the name being sane (i.e., no special characters)
81                         val = self.env[name]
82                         assert val.find("'") < 0 # ' is not supported
83                         if len(res): res += " "
84                         res += name+"='"+val+"'"
85                 return res
86
87         def write(self, f):
88                 print >>f, "#!/usr/bin/make -f"
89                 print >>f, ""
90                 print >>f, ".PHONY: build" # there may be a directory called "build"
91                 print >>f, ""
92                 print >>f, "build %:" # need to mention "build" here again explicitly so PHONY takes effect
93                 # write proper dh call
94                 dh = self.dh
95                 if self.dhWith:
96                         dh.append('--with='+','.join(self.dhWith))
97                 print >>f, '\t'+self.env2str()+' dh $@ '+safeCall(*dh)
98                 # write remaining rules
99                 for rule in self.rules:
100                         print >>f, ""
101                         print >>f, "override_dh_"+rule+":"
102                         for line in self.rules[rule]:
103                                 print >>f, "\t"+line
104
105 # rule-makers
106 def cmakeRules(config):
107         buildDir = config.getstr('buildDir', 'build')
108         srcDir = os.getcwd()
109         r = RulesFile()
110         r.dh += ["--buildsystem=cmake", "--builddirectory="+buildDir] # dh parameters
111         r.rules['auto_configure'] = [
112                 safeCall("mkdir", "-p", buildDir),
113                 safeCall("cd", buildDir) + " && " +
114                   safeCall("cmake", srcDir, "-DCMAKE_INSTALL_PREFIX=/usr", *config.get('cmakeParameters', []))
115         ]
116         r.rules['auto_clean'] = [safeCall('rm', '-f', os.path.join(buildDir, 'CMakeCache.txt'))] # clean old cmake cache
117         return r
118
119 def automakeRules(config):
120         # "build" is what we are building *on*, and "host" is what we are building *for* (and GNU is weird...)
121         # also, we don't really support cross-building... ;-) (to do, we'd have to write shell code that checks whether BUILD_GNU_TYPE
122         #  and HOST_GNU_TYPE are equal, and if they are not, add a --host parameter)
123         r = RulesFile()
124         r.dh += ["--buildsystem=autoconf"]
125         r.rules['auto_configure'] = [
126                 'BUILD_TYPE=$$(dpkg-architecture -qDEB_BUILD_GNU_TYPE) && ' + # doing the expansion beforehand ensures that we cancel if it fails
127                 'MULTIARCH=$$(dpkg-architecture -qDEB_HOST_MULTIARCH) && '+
128                         './configure --build=$$BUILD_TYPE '+ # do the escape manually here so we can use the variables (there's no user-controlled string in here anyway)
129                         '--prefix=/usr --includedir=/usr/include --mandir=/usr/share/man --infodir=/usr/share/info '+
130                         '--libdir=/usr/lib/$$MULTIARCH --libexecdir=/usr/lib/$$MULTIARCH '+
131                         '--sysconfdir=/etc --localstatedir=/var '+
132                         safeCall(*config.get('automakeParameters', []))
133         ]
134         r.rules['auto_clean'] = ['rm -f config.status'] # do not re-use old configuration (no need for escaping here, obviously)
135         return r
136
137 def pythonRules(config):
138         r = RulesFile()
139         r.dh += ["--buildsystem=python_distutils"]
140         r.dhWith.add('python2')
141         r.rules['auto_clean'] = [ # clean properly
142                 'dh_auto_clean',
143                 'rm -rf build'
144         ]
145         return r
146
147 # build systems
148 buildSystems = {
149         'cmake': BuildSystem(cmakeRules, ["cmake"]),
150         'automake': BuildSystem(automakeRules),
151         'python': BuildSystem(pythonRules, ["python-setuptools"], ["${python:Depends}"]),
152 }
153
154 # utility functions
155 def commandInBuildEnv(config, command):
156         schroot = config.getstr('schroot')
157         if schroot is not None: command = ['schroot', '-c', schroot, '--'] + command
158         return command
159
160 def getArchitecture(config):
161         cmd = commandInBuildEnv(config, ['dpkg-architecture', '-qDEB_HOST_ARCH'])
162         p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
163         res = p.communicate()[0] # get only stdout
164         if p.returncode != 0: raise Exception("Querying dpkg for the architecture failed")
165         return res[0:len(res)-1] # chop of the \n at the end
166
167 def writeDependency(f, name, list):
168         if len(list):
169                 print >>f, name+": "+', '.join(list)
170
171 # actual work functions
172 def createDebianFiles(config):
173         if not isinstance(config, ConfigDict):
174                 config = ConfigDict(config)
175         sourceName = config.getstr('sourceName')
176         binaryName = config.getstr('binaryName', sourceName+'-local')
177         name = config.getstr('name', os.getenv('USER')) # os.getlogin() fails in minimal chroots
178         email = config.getstr('email', os.getenv('USER')+'@'+os.uname()[1]) # user@hostname
179         debDir = os.path.expanduser(config.getstr('debDir'))
180         buildSystem = buildSystems[config.getstr('buildSystem')] # get the data immediately
181         version = config.getstr('version')
182         dbgPackage = config.getbool('dbgPackage', False)
183         parallelJobs = config.getint('parallelJobs', 2)
184         packageArchitecture = config.getstr('architecture', 'any')
185         withPython2 = config.getbool('withPython2', False)
186         if withPython2:
187                 buildSystem.binaryDepends.append("${python:Depends}") # HACK, but it works: make sure dependencies on binary are added
188         # we return the list of files generated, so we need to know the architecture
189         arch = getArchitecture(config)
190         files = []
191         # create folders
192         if os.path.exists('debian'): raise Exception('debian folder already exists?')
193         os.mkdir('debian')
194         os.mkdir('debian/source')
195         if not os.path.exists(debDir): os.makedirs(debDir)
196         # source format file
197         with open('debian/source/format', 'w') as f:
198                 print >>f, "3.0 (native)"
199         # compat file
200         with open('debian/compat', 'w') as f:
201                 print >>f, "9"
202         # copyright file
203         with open('debian/copyright', 'w') as f:
204                 print >>f, "Auto-generated by auto-debuild, not suited for distribution"
205         # changelog file
206         with open('debian/changelog', 'w') as f:
207                 print >>f, sourceName,"("+version+")","UNRELEASED; urgency=low"
208                 print >>f, ""
209                 print >>f, "  * Auto-generated by auto-debuild"
210                 print >>f, ""
211                 print >>f, " --",name,"<"+email+">  "+time.strftime('%a, %d %b %Y %H:%M:%S %z')
212         # control file
213         with open('debian/control', 'w') as f:
214                 print >>f, "Source:",sourceName
215                 print >>f, "Section:",config.getstr('section', 'misc')
216                 print >>f, "Priority: extra"
217                 print >>f, "Maintainer: %s <%s>" % (name, email)
218                 writeDependency(f, 'Build-Depends', ["debhelper (>= 9)"] + buildSystem.buildDepends + config.get('buildDepends', []))
219                 print >>f, "Standards-Version: 3.9.3"
220                 print >>f, ""
221                 print >>f, "Package:",binaryName
222                 print >>f, "Architecture:",packageArchitecture
223                 if 'binaryMultiArch' in config:
224                         print >>f, "Multi-Arch:",config.getstr('binaryMultiArch')
225                 writeDependency(f, "Pre-Depends", ["${misc:Pre-Depends}"] + config.get('binaryPreDepends', []))
226                 writeDependency(f, "Depends", ["${shlibs:Depends}", "${misc:Depends}"] + buildSystem.binaryDepends +
227                         config.get('binaryDepends', []))
228                 writeDependency(f, "Recommends", config.get('binaryRecommends', []))
229                 writeDependency(f, "Provides", config.get('binaryProvides', [sourceName]))
230                 writeDependency(f, "Conflicts", config.get('binaryConflicts', []))
231                 writeDependency(f, "Breaks", config.get('binaryBreaks', []) + config.get('binaryBreaksReplaces', []))
232                 writeDependency(f, "Replaces", config.get('binaryReplaces', []) + config.get('binaryBreaksReplaces', []))
233                 print >>f, "Description:",sourceName,"(auto-debuild)"
234                 print >>f, " Package auto-generated by auto-debuild."
235                 files.append(os.path.join(debDir, "%s_%s_%s.deb" % (binaryName, version, arch)))
236                 if dbgPackage:
237                         print >>f, ""
238                         print >>f, "Package:",binaryName+"-dbg"
239                         print >>f, "Section: debug"
240                         print >>f, "Priority: extra"
241                         print >>f, "Architecture:",packageArchitecture
242                         writeDependency(f, "Depends", ["${misc:Depends}", binaryName+" (= ${binary:Version})"])
243                         print >>f, "Description:",sourceName,"debug smbols (auto-debuild)"
244                         print >>f, " Package containing debug symbols for "+sourceName+", auto-generated by auto-debuild."
245                         files.append(os.path.join(debDir, "%s-dbg_%s_%s.deb" % (binaryName, version, arch)))
246         # install file
247         with open('debian/'+binaryName+'.install', 'w') as f:
248                 for line in config.get('binaryInstallFiles', []):
249                         if line.startswith('/'): # a file from within the package, not from the source tree
250                                 line = 'debian/'+binaryName+line
251                         print >>f, line
252         # maintainer scripts for alternatives
253         if 'alternatives' in config:
254                 with open('debian/'+binaryName+'.postinst', 'w') as f:
255                         print >>f, "#!/bin/sh"
256                         print >>f, "set -e"
257                         print >>f, 'if [ "$1" = "configure" ]; then'
258                         for alternative in config.get('alternatives'):
259                                 print >>f, safeCall('update-alternatives', '--install', alternative['link'], alternative['name'], alternative['target'],
260                                         str(alternative['priority']))
261                         print >>f, 'fi'
262                         print >>f, ''
263                         print >>f, '#DEBHELPER#'
264                         print >>f, ''
265                         print >>f, 'exit 0'
266                 with open('debian/'+binaryName+'.prerm', 'w') as f:
267                         print >>f, "#!/bin/sh"
268                         print >>f, "set -e"
269                         print >>f, 'if [ "$1" = "remove" ]; then'
270                         for alternative in config.get('alternatives'):
271                                 print >>f, safeCall('update-alternatives', '--remove', alternative['name'], alternative['target'])
272                         print >>f, 'fi'
273                         print >>f, ''
274                         print >>f, '#DEBHELPER#'
275                         print >>f, ''
276                         print >>f, 'exit 0'
277         # rules file: build system specific
278         with open('debian/rules', 'w') as f:
279                 # get rule file for build system: may only touch auto_config and auto_clean rules and the dh options
280                 r = buildSystem.ruleMaker(config)
281                 # global rules
282                 r.env["DEB_BUILD_OPTIONS"] = 'parallel='+str(parallelJobs)
283                 if not dbgPackage:
284                         # disable debug information
285                         r.env["DEB_CFLAGS_APPEND"] = '-g0'
286                         r.env["DEB_CXXFLAGS_APPEND"] = '-g0'
287                 r.dh += ['--parallel']
288                 if withPython2:
289                         r.dhWith.add('python2')
290                         r.rules['python2'] = ['dh_python2 --no-guessing-versions']
291                 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...)
292                 r.rules['auto_test'] = []
293                 # installation rule
294                 r.rules['auto_install'] = [safeCall('dh_auto_install', '--destdir=debian/'+binaryName)] # install everything into the binary package
295                 if 'binarySkipFiles' in config:
296                         r.rules['auto_install'].append(safeCall('cd', 'debian/'+binaryName) + " && " +
297                                 safeCall('rm', *config.get('binarySkipFiles')))
298                 # for debug packages
299                 if dbgPackage:
300                         r.rules['strip'] = [safeCall('dh_strip', '--dbg-package='+binaryName+"-dbg")] # put debug files in appropriate package
301                         r.rules['installdocs'] = [safeCall('dh_installdocs', '--link-doc='+binaryName)] # make the doc folder of the dbg package a symlink
302                 # wait after configuration?
303                 if config.getbool('waitAfterConfig', False):
304                         if not 'auto_configure' in r.rules: r.rules['auto_configure'] = ['dh_auto_configure'] # make sure there is an override
305                         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...
306                 # dump it to a file
307                 r.write(f)
308         mode = os.stat('debian/rules').st_mode
309         os.chmod('debian/rules', mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH)
310         # return list of files that will be created
311         return files
312
313 def buildDebianPackage(config):
314         if not isinstance(config, ConfigDict):
315                 config = ConfigDict(config)
316         commands = ['dpkg-checkbuilddeps', 'debian/rules clean', 'debian/rules build', 'fakeroot debian/rules binary', 'debian/rules clean']
317         command = ['bash', '-c', ' && '.join(commands)] # make it all one command, so we don't have to open and close the chroot too often
318         subprocess.check_call(commandInBuildEnv(config, command))
319         shutil.rmtree('debian') # it only contains what we just created
320
321 ###################################################################
322 # if we are called directly as script
323 if __name__ == "__main__":
324         try:
325                 # get config
326                 config = loadConfigFile('auto-debuild.conf')
327                 # generate debian files
328                 if os.path.exists('debian'):
329                         if raw_input("A debian folder already exists, to you want to remove it (y/N)? ").lower() != "y":
330                                 sys.exit(1)
331                         shutil.rmtree('debian')
332                 files = createDebianFiles(config)
333                 # check if a file is overwritten
334                 for file in files:
335                         if os.path.exists(file):
336                                 if raw_input("Do you want to overwrite %s (y/N)? " % file).lower() != "y":
337                                         sys.exit(1)
338                 # run compilation
339                 buildDebianPackage(config)
340                 # install files
341                 print "Installing created deb files..."
342                 subprocess.check_call(['sudo', 'dpkg', '--install'] + files)
343         except (subprocess.CalledProcessError, KeyboardInterrupt) as e: # for some exceptions, a stackrace is usually pointless
344                 print >> sys.stderr
345                 print >> sys.stderr
346                 if isinstance(e, KeyboardInterrupt): # str(e) would be the empty string
347                         print >> sys.stderr, "Interruped by user"
348                 else:
349                         print >> sys.stderr, "Error during package creation: %s" % str(e)
350                 print >> sys.stderr
351                 sys.exit(1)