buildtools/wafsamba/samba_bundled.py

   1 # functions to support bundled libraries
   2
   3 from Configure import conf
   4 import Logs
   5 from samba_utils import *
   6
   7 def PRIVATE_NAME(bld, name, bundled_extension, private_library):
   8     '''possibly rename a library to include a bundled extension'''
   9     if bld.env.DISABLE_SHARED or not bundled_extension:
  10         return name
  11     if name in bld.env.PRIVATE_EXTENSION_EXCEPTION and not private_library:
  12         return name
  13     extension = getattr(bld.env, 'PRIVATE_EXTENSION', '')
  14     if extension:
  15         return name + '-' + extension
  16     return name
  17
  18
  19 def target_in_list(target, lst, default):
  20     for l in lst:
  21         if target == l:
  22             return True
  23         if '!' + target == l:
  24             return False
  25         if l == 'ALL':
  26             return True
  27         if l == 'NONE':
  28             return False
  29     return default
  30
  31
  32 def BUILTIN_LIBRARY(bld, name):
  33     '''return True if a library should be builtin
  34        instead of being built as a shared lib'''
  35     if bld.env.DISABLE_SHARED:
  36         return True
  37     return target_in_list(name, bld.env.BUILTIN_LIBRARIES, False)
  38 Build.BuildContext.BUILTIN_LIBRARY = BUILTIN_LIBRARY
  39
  40
  41 def BUILTIN_DEFAULT(opt, builtins):
  42     '''set a comma separated default list of builtin libraries for this package'''
  43     if 'BUILTIN_LIBRARIES_DEFAULT' in Options.options:
  44         return
  45     Options.options['BUILTIN_LIBRARIES_DEFAULT'] = builtins
  46 Options.Handler.BUILTIN_DEFAULT = BUILTIN_DEFAULT
  47
  48
  49 def PRIVATE_EXTENSION_DEFAULT(opt, extension, noextension=''):
  50     '''set a default private library extension'''
  51     if 'PRIVATE_EXTENSION_DEFAULT' in Options.options:
  52         return
  53     Options.options['PRIVATE_EXTENSION_DEFAULT'] = extension
  54     Options.options['PRIVATE_EXTENSION_EXCEPTION'] = noextension
  55 Options.Handler.PRIVATE_EXTENSION_DEFAULT = PRIVATE_EXTENSION_DEFAULT
  56
  57
  58 def minimum_library_version(conf, libname, default):
  59     '''allow override of mininum system library version'''
  60
  61     minlist = Options.options.MINIMUM_LIBRARY_VERSION
  62     if not minlist:
  63         return default
  64
  65     for m in minlist.split(','):
  66         a = m.split(':')
  67         if len(a) != 2:
  68             Logs.error("Bad syntax for --minimum-library-version of %s" % m)
  69             sys.exit(1)
  70         if a[0] == libname:
  71             return a[1]
  72     return default
  73
  74
  75 @conf
  76 def LIB_MAY_BE_BUNDLED(conf, libname):
  77     return ('NONE' not in conf.env.BUNDLED_LIBS and
  78             '!%s' % libname not in conf.env.BUNDLED_LIBS)
  79
  80
  81 @conf
  82 def LIB_MUST_BE_BUNDLED(conf, libname):
  83     return ('ALL' in conf.env.BUNDLED_LIBS or
  84             libname in conf.env.BUNDLED_LIBS)
  85
  86
  87 @runonce
  88 @conf
  89 def CHECK_BUNDLED_SYSTEM(conf, libname, minversion='0.0.0',
  90                          checkfunctions=None, headers=None,
  91                          onlyif=None, implied_deps=None,
  92                          require_headers=True):
  93     '''check if a library is available as a system library.
  94     this first tries via pkg-config, then if that fails
  95     tries by testing for a specified function in the specified lib
  96     '''
  97     if conf.LIB_MUST_BE_BUNDLED(libname):
  98         return False
  99     found = 'FOUND_SYSTEMLIB_%s' % libname
 100     if found in conf.env:
 101         return conf.env[found]
 102
 103     def check_functions_headers():
 104         '''helper function for CHECK_BUNDLED_SYSTEM'''
 105         if checkfunctions is None:
 106             return True
 107         if require_headers and headers and not conf.CHECK_HEADERS(headers, lib=libname):
 108             return False
 109         return conf.CHECK_FUNCS_IN(checkfunctions, libname, headers=headers,
 110                                    empty_decl=False, set_target=False)
 111
 112     # see if the library should only use a system version if another dependent
 113     # system version is found. That prevents possible use of mixed library
 114     # versions
 115     if onlyif:
 116         for syslib in TO_LIST(onlyif):
 117             f = 'FOUND_SYSTEMLIB_%s' % syslib
 118             if not f in conf.env:
 119                 if not conf.LIB_MAY_BE_BUNDLED(libname):
 120                     Logs.error('ERROR: Use of system library %s depends on missing system library %s' % (libname, syslib))
 121                     sys.exit(1)
 122                 conf.env[found] = False
 123                 return False
 124
 125     minversion = minimum_library_version(conf, libname, minversion)
 126
 127     # try pkgconfig first
 128     if (conf.check_cfg(package=libname,
 129                       args='"%s >= %s" --cflags --libs' % (libname, minversion),
 130                       msg='Checking for system %s >= %s' % (libname, minversion)) and
 131         check_functions_headers()):
 132         conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 133         conf.env[found] = True
 134         if implied_deps:
 135             conf.SET_SYSLIB_DEPS(libname, implied_deps)
 136         return True
 137     if checkfunctions is not None:
 138         if check_functions_headers():
 139             conf.env[found] = True
 140             if implied_deps:
 141                 conf.SET_SYSLIB_DEPS(libname, implied_deps)
 142             conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 143             return True
 144     conf.env[found] = False
 145     if not conf.LIB_MAY_BE_BUNDLED(libname):
 146         Logs.error('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
 147         sys.exit(1)
 148     return False
 149
 150
 151 @runonce
 152 @conf
 153 def CHECK_BUNDLED_SYSTEM_PYTHON(conf, libname, modulename, minversion='0.0.0'):
 154     '''check if a python module is available on the system and
 155     has the specified minimum version.
 156     '''
 157     if conf.LIB_MUST_BE_BUNDLED(libname):
 158         return False
 159
 160     # see if the library should only use a system version if another dependent
 161     # system version is found. That prevents possible use of mixed library
 162     # versions
 163     minversion = minimum_library_version(conf, libname, minversion)
 164
 165     try:
 166         m = __import__(modulename)
 167     except ImportError:
 168         found = False
 169     else:
 170         try:
 171             version = m.__version__
 172         except AttributeError:
 173             found = False
 174         else:
 175             found = tuple(minversion.split(".")) >= tuple(version.split("."))
 176     if not found and not conf.LIB_MAY_BE_BUNDLED(libname):
 177         Logs.error('ERROR: Python module %s of version %s not found, and bundling disabled' % (libname, minversion))
 178         sys.exit(1)
 179     return found
 180
 181
 182 def NONSHARED_BINARY(bld, name):
 183     '''return True if a binary should be built without non-system shared libs'''
 184     if bld.env.DISABLE_SHARED:
 185         return True
 186     return target_in_list(name, bld.env.NONSHARED_BINARIES, False)
 187 Build.BuildContext.NONSHARED_BINARY = NONSHARED_BINARY
 188
 189