Move loading a module by filename into a helper function

[mass-build.git] / build_system.py

diff --git a/build_system.py b/build_system.py
index 253348e25e79559d13dc530cd4b3be0a0877ed3b..9dceb7df7e689e7782a69ef3fa9462f2ff5e953e 100644 (file)
--- a/build_system.py
+++ b/build_system.py
@@ -1,77 +1,123 @@
-import os, subprocess
+# mass-build - Easily Build Software Involving a Large Amount of Source Repositories
+# Copyright (C) 2012-2013 Ralf Jung <post@ralfj.de>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# 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.

 
 

-'''A build system has three methods: "configure" (with optionak "force" parameter), "build" and "install"'''
+import os, shutil, subprocess, multiprocessing
+
+'''A build system must have a "build" method with parameters "reconfigure" and "waitAfterConfig".'''

 
 # Compile, build, and install cmake projects:
 class CMake:
 
 # Compile, build, and install cmake projects:
 class CMake:

-       def __init__(self, sourceFolder, buildFolder, module, config):
+       def __init__(self, sourceFolder, buildFolder, config):

                self.sourceFolder = os.path.abspath(sourceFolder)
                self.buildFolder = os.path.abspath(buildFolder)
                self.sourceFolder = os.path.abspath(sourceFolder)
                self.buildFolder = os.path.abspath(buildFolder)

-               self.installDir = config['installDir']
-               self.buildType = config['buildType']
-               self.jobs = config['jobs']
-               self.buildCmdPrefix = config['buildCmdPrefix']
-               self.installCmdPrefix = config['installCmdPrefix']
-               self.module = module
+               self.config = config
+       
+       def setEnv(self, name, val):
+               '''Set the given environment variable, return old value'''
+               oldVal = os.getenv(name)
+               os.putenv(name, val)
+               return oldVal
+       
+       def prependDirToEnv(self, name, dir, default):
+               '''Prepends the given directory to the environment variable. If the variable is empty, dir isprepended to the default.
+                  Returns the old value.'''
+               oldVal = os.getenv(name)
+               oldPaths = default if oldVal is None else oldVal
+               os.putenv(name, dir+':'+oldPaths)
+               return oldVal
+       
+       def restoreEnv(self, name, oldVal):
+               '''Restore environment variable to previous value'''
+               if oldVal is None:
+                       os.unsetenv(name)
+               else:
+                       os.putenv(name, oldVal)

        
        

-       def build(self, reconfigure=False):
+       def build(self, reconfigure, waitAfterConfig):

                # Make sure we have a build directory
                if not os.path.exists(self.buildFolder): os.makedirs(self.buildFolder)
                os.chdir(self.buildFolder)
                # In case of reconfiguration, delete cache file if it exists
                cacheFile = 'CMakeCache.txt'
                if os.path.exists(cacheFile) and reconfigure: os.remove(cacheFile)
                # Make sure we have a build directory
                if not os.path.exists(self.buildFolder): os.makedirs(self.buildFolder)
                os.chdir(self.buildFolder)
                # In case of reconfiguration, delete cache file if it exists
                cacheFile = 'CMakeCache.txt'
                if os.path.exists(cacheFile) and reconfigure: os.remove(cacheFile)

-               # Run cmake
-               os.putenv('PKG_CONFIG_PATH', os.path.join(self.installDir, 'lib', 'pkgconfig')) # I found no way to do this within cmake
-               subprocess.check_call(['cmake', self.sourceFolder, '-DCMAKE_BUILD_TYPE='+self.buildType,
-                       '-DCMAKE_INSTALL_PREFIX='+self.installDir]+self.module.get('cmakeParameters', []))
-               os.unsetenv('PKG_CONFIG_PATH')
+               # Run cmake, in the proper environment, then restore old environment
+               oldPKGConfigPath = self.setEnv('PKG_CONFIG_PATH', os.path.join(self.config['installDir'], 'lib', 'pkgconfig'))
+               oldCMakePrefixPath = self.setEnv('CMAKE_PREFIX_PATH', self.config['installDir'])
+               oldXDGDataDirs = self.prependDirToEnv('XDG_DATA_DIRS', os.path.join(self.config['installDir'], 'share'), '/usr/share')
+               oldXDGConfigDirs = self.prependDirToEnv('XDG_CONFIG_DIRS', os.path.join(self.config['installDir'], 'etc', 'xdg'), '/etc/xdg')
+               subprocess.check_call(['cmake', self.sourceFolder, '-DCMAKE_BUILD_TYPE='+self.config['buildType'],
+                       '-DCMAKE_INSTALL_PREFIX='+self.config['installDir']]+self.config.get('cmakeParameters', []))
+               self.restoreEnv('PKG_CONFIG_PATH', oldPKGConfigPath)
+               self.restoreEnv('CMAKE_PREFIX_PATH', oldCMakePrefixPath)
+               self.restoreEnv('XDG_DATA_DIRS', oldXDGDataDirs)
+               self.restoreEnv('XDG_CONFIG_DIRS', oldXDGConfigDirs)
+               # if asked to do so, wait
+               if waitAfterConfig:
+                       input('Configuration done. Hit "Enter" to build the project. ')

                # run compilation
                # run compilation

-               subprocess.check_call(self.buildCmdPrefix + ['make', '-j'+str(self.jobs)])
+               jobs = multiprocessing.cpu_count()+1
+               subprocess.check_call(self.config.get('buildCmdPrefix', []) + ['make', '-j'+str(jobs)])

                # run installation
                # run installation

-               subprocess.check_call(self.installCmdPrefix + ['make', 'install'])
+               subprocess.check_call(self.config.get('installCmdPrefix', []) + ['make', 'install', '-j'+str((jobs+1)//2)]) # jobs/2, rounded up

 
 # if auto-debuild is available, provide a wrapper for it
 try:
        import auto_debuild
        class AutoDebuild:
 
 # if auto-debuild is available, provide a wrapper for it
 try:
        import auto_debuild
        class AutoDebuild:

-               def __init__(self, sourceFolder, buildFolder, module, vcs, config):
+               def __init__(self, sourceFolder, buildFolder, config, vcs):

                        self.sourceFolder = os.path.abspath(sourceFolder)
                        self.buildFolder = os.path.abspath(buildFolder)
                        self.sourceFolder = os.path.abspath(sourceFolder)
                        self.buildFolder = os.path.abspath(buildFolder)

-                       self.jobs = config['jobs']
-                       self.debDir = os.path.abspath(config['debDir'])
-                       self.debName = config['debName']
-                       self.debEMail = config['debEMail']
-                       self.module = module
+                       self.debFolder = os.path.abspath(config['debDir'])
+                       self.config = config

                        self.vcs = vcs
 
                        self.vcs = vcs
 

-               def build(self, reconfigure=False): # reconfigure is ignored (we always do a reconfiguration)
+               def build(self, reconfigure, waitAfterConfig): # reconfigure is ignored (we always do a reconfiguration)
+                       # get version name
+                       versionName = self.config['versionName'] if 'versionName' in self.config else self.vcs.version()
+                       if versionName is None:
+                               raise Exception("VCS did not provide us with a proper version number, please provide one manually")

                        # create auto-debuild configuration
                        autoDebuildConfig = {
                        # create auto-debuild configuration
                        autoDebuildConfig = {

-                               'sourceName': self.module['name'],
-                               'buildSystem': self.module['buildSystem'],
-                               'debDir': self.debDir,
+                               'sourceName': self.config['name'],
+                               'buildSystem': self.config['buildSystem'],
+                               'debDir': self.debFolder,

                                'buildDir': self.buildFolder,
                                'buildDir': self.buildFolder,

-                               'name': self.debName,
-                               'email': self.debEMail,
-                               'parallelJobs': self.jobs,
-                               'version': self.vcs.version()
+                               'name': self.config['debName'],
+                               'email': self.config['debEMail'],
+                               'version': versionName + self.config.get('versionSuffix', ''),
+                               'waitAfterConfig': waitAfterConfig,

                        }
                        }

-                       if autoDebuildConfig['version'] is None:
-                               raise Exception("VCS did not provide us with a proper version number, please fix this")

                        # copy some more optional configuration
                        # copy some more optional configuration

-                       for option in ('dbgPackage', 'section', 'binarySkipFiles', 'binaryInstallFiles',
-                                       'buildDepends', 'binaryDepends', 'binaryRecommends', 'binaryProvides',
-                                       'cmakeParameters', 'automakeParameters'):
-                               if option in self.module:
-                                       autoDebuildConfig[option] = self.module[option]
+                       for option in ('epoch', 'dbgPackage', 'section', 'withPython2', 'withSIP', 'binarySkipFiles', 'binaryInstallFiles',
+                                       'buildDepends', 'binaryDepends', 'binaryShims', 'binaryRecommends', 'binaryProvides', 'binaryConflicts', 'binaryBreaks',
+                                       'binaryReplaces', 'binaryBreaksReplaces',
+                                       'alternatives', 'cmakeParameters', 'automakeParameters'):
+                               if option in self.config:
+                                       autoDebuildConfig[option] = self.config[option]

                        # create Debian files
                        os.chdir(self.sourceFolder)
                        # create Debian files
                        os.chdir(self.sourceFolder)

+                       if os.path.isdir('debian'): # clean previous build attempts
+                               shutil.rmtree('debian')

                        files = auto_debuild.createDebianFiles(autoDebuildConfig)
                        # build package(s)
                        auto_debuild.buildDebianPackage(autoDebuildConfig)
                        # install package(s)
                        files = auto_debuild.createDebianFiles(autoDebuildConfig)
                        # build package(s)
                        auto_debuild.buildDebianPackage(autoDebuildConfig)
                        # install package(s)

-                       subprocess.check_call(['sudo', 'dpkg', '--install'] + files)
+                       if self.config.get('debInstall', True):
+                               subprocess.check_call(['sudo', 'dpkg', '--install'] + files)

 
 except ImportError:
        #print "auto_debuild not found, disabling auto-debuild system"
 
 except ImportError:
        #print "auto_debuild not found, disabling auto-debuild system"