buildtools/wafsamba/samba_bundled.py

   1 # functions to support bundled libraries
   2
   3 from Configure import conf
   4 import sys, Logs
   5 from samba_utils import *
   6
   7 def PRIVATE_NAME(bld, name, private_extension, private_library):
   8     '''possibly rename a library to include a bundled extension'''
   9     if bld.env.DISABLE_SHARED or not private_extension:
  10         return name
  11     if name in bld.env.PRIVATE_EXTENSION_EXCEPTION and not private_library:
  12         return name
  13     if private_library and bld.EXPAND_VARIABLES(bld.env.LIBDIR) != bld.EXPAND_VARIABLES(bld.env.PRIVATELIBDIR):
  14         # Private libraries already have their own namespace in another way
  15         return name
  16     extension = getattr(bld.env, 'PRIVATE_EXTENSION', '')
  17     if extension:
  18         return name + '-' + extension
  19     return name
  20
  21
  22 def target_in_list(target, lst, default):
  23     for l in lst:
  24         if target == l:
  25             return True
  26         if '!' + target == l:
  27             return False
  28         if l == 'ALL':
  29             return True
  30         if l == 'NONE':
  31             return False
  32     return default
  33
  34
  35 def BUILTIN_LIBRARY(bld, name):
  36     '''return True if a library should be builtin
  37        instead of being built as a shared lib'''
  38     if bld.env.DISABLE_SHARED:
  39         return True
  40     return target_in_list(name, bld.env.BUILTIN_LIBRARIES, False)
  41 Build.BuildContext.BUILTIN_LIBRARY = BUILTIN_LIBRARY
  42
  43
  44 def BUILTIN_DEFAULT(opt, builtins):
  45     '''set a comma separated default list of builtin libraries for this package'''
  46     if 'BUILTIN_LIBRARIES_DEFAULT' in Options.options:
  47         return
  48     Options.options['BUILTIN_LIBRARIES_DEFAULT'] = builtins
  49 Options.Handler.BUILTIN_DEFAULT = BUILTIN_DEFAULT
  50
  51
  52 def PRIVATE_EXTENSION_DEFAULT(opt, extension, noextension=''):
  53     '''set a default private library extension'''
  54     if 'PRIVATE_EXTENSION_DEFAULT' in Options.options:
  55         return
  56     Options.options['PRIVATE_EXTENSION_DEFAULT'] = extension
  57     Options.options['PRIVATE_EXTENSION_EXCEPTION'] = noextension
  58 Options.Handler.PRIVATE_EXTENSION_DEFAULT = PRIVATE_EXTENSION_DEFAULT
  59
  60
  61 def minimum_library_version(conf, libname, default):
  62     '''allow override of mininum system library version'''
  63
  64     minlist = Options.options.MINIMUM_LIBRARY_VERSION
  65     if not minlist:
  66         return default
  67
  68     for m in minlist.split(','):
  69         a = m.split(':')
  70         if len(a) != 2:
  71             Logs.error("Bad syntax for --minimum-library-version of %s" % m)
  72             sys.exit(1)
  73         if a[0] == libname:
  74             return a[1]
  75     return default
  76
  77
  78 @conf
  79 def LIB_MAY_BE_BUNDLED(conf, libname):
  80     return ('NONE' not in conf.env.BUNDLED_LIBS and
  81             '!%s' % libname not in conf.env.BUNDLED_LIBS)
  82
  83
  84 @conf
  85 def LIB_MUST_BE_BUNDLED(conf, libname):
  86     return ('ALL' in conf.env.BUNDLED_LIBS or
  87             libname in conf.env.BUNDLED_LIBS)
  88
  89
  90 @runonce
  91 @conf
  92 def CHECK_BUNDLED_SYSTEM(conf, libname, minversion='0.0.0',
  93                          checkfunctions=None, headers=None,
  94                          onlyif=None, implied_deps=None,
  95                          require_headers=True):
  96     '''check if a library is available as a system library.
  97     this first tries via pkg-config, then if that fails
  98     tries by testing for a specified function in the specified lib
  99     '''
 100     if conf.LIB_MUST_BE_BUNDLED(libname):
 101         return False
 102     found = 'FOUND_SYSTEMLIB_%s' % libname
 103     if found in conf.env:
 104         return conf.env[found]
 105
 106     def check_functions_headers():
 107         '''helper function for CHECK_BUNDLED_SYSTEM'''
 108         if checkfunctions is None:
 109             return True
 110         if require_headers and headers and not conf.CHECK_HEADERS(headers, lib=libname):
 111             return False
 112         return conf.CHECK_FUNCS_IN(checkfunctions, libname, headers=headers,
 113                                    empty_decl=False, set_target=False)
 114
 115     # see if the library should only use a system version if another dependent
 116     # system version is found. That prevents possible use of mixed library
 117     # versions
 118     if onlyif:
 119         for syslib in TO_LIST(onlyif):
 120             f = 'FOUND_SYSTEMLIB_%s' % syslib
 121             if not f in conf.env:
 122                 if not conf.LIB_MAY_BE_BUNDLED(libname):
 123                     Logs.error('ERROR: Use of system library %s depends on missing system library %s' % (libname, syslib))
 124                     sys.exit(1)
 125                 conf.env[found] = False
 126                 return False
 127
 128     minversion = minimum_library_version(conf, libname, minversion)
 129
 130     # try pkgconfig first
 131     if (conf.check_cfg(package=libname,
 132                       args='"%s >= %s" --cflags --libs' % (libname, minversion),
 133                       msg='Checking for system %s >= %s' % (libname, minversion)) and
 134         check_functions_headers()):
 135         conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 136         conf.env[found] = True
 137         if implied_deps:
 138             conf.SET_SYSLIB_DEPS(libname, implied_deps)
 139         return True
 140     if checkfunctions is not None:
 141         if check_functions_headers():
 142             conf.env[found] = True
 143             if implied_deps:
 144                 conf.SET_SYSLIB_DEPS(libname, implied_deps)
 145             conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 146             return True
 147     conf.env[found] = False
 148     if not conf.LIB_MAY_BE_BUNDLED(libname):
 149         Logs.error('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
 150         sys.exit(1)
 151     return False
 152
 153
 154 @runonce
 155 @conf
 156 def CHECK_BUNDLED_SYSTEM_PYTHON(conf, libname, modulename, minversion='0.0.0'):
 157     '''check if a python module is available on the system and
 158     has the specified minimum version.
 159     '''
 160     if conf.LIB_MUST_BE_BUNDLED(libname):
 161         return False
 162
 163     # see if the library should only use a system version if another dependent
 164     # system version is found. That prevents possible use of mixed library
 165     # versions
 166     minversion = minimum_library_version(conf, libname, minversion)
 167
 168     try:
 169         m = __import__(modulename)
 170     except ImportError:
 171         found = False
 172     else:
 173         try:
 174             version = m.__version__
 175         except AttributeError:
 176             found = False
 177         else:
 178             found = tuple(version.split(".")) >= tuple(minversion.split("."))
 179     if not found and not conf.LIB_MAY_BE_BUNDLED(libname):
 180         Logs.error('ERROR: Python module %s of version %s not found, and bundling disabled' % (libname, minversion))
 181         sys.exit(1)
 182     return found
 183
 184
 185 def NONSHARED_BINARY(bld, name):
 186     '''return True if a binary should be built without non-system shared libs'''
 187     if bld.env.DISABLE_SHARED:
 188         return True
 189     return target_in_list(name, bld.env.NONSHARED_BINARIES, False)
 190 Build.BuildContext.NONSHARED_BINARY = NONSHARED_BINARY
 191
 192