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 BUNDLED_NAME(bld, name, bundled_extension):
   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.BUNDLED_EXTENSION_EXCEPTION:
  12         return name
  13     extension = getattr(bld.env, 'BUNDLED_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 BUNDLED_EXTENSION_DEFAULT(opt, extension, noextension=''):
  50     '''set a default bundled library extension'''
  51     if 'BUNDLED_EXTENSION_DEFAULT' in Options.options:
  52         return
  53     Options.options['BUNDLED_EXTENSION_DEFAULT'] = extension
  54     Options.options['BUNDLED_EXTENSION_EXCEPTION'] = noextension
  55 Options.Handler.BUNDLED_EXTENSION_DEFAULT = BUNDLED_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     # see if the library should only use a system version if another dependent
 104     # system version is found. That prevents possible use of mixed library
 105     # versions
 106     if onlyif:
 107         for syslib in TO_LIST(onlyif):
 108             f = 'FOUND_SYSTEMLIB_%s' % syslib
 109             if not f in conf.env:
 110                 if not conf.LIB_MAY_BE_BUNDLED(libname):
 111                     Logs.error('ERROR: Use of system library %s depends on missing system library %s' % (libname, syslib))
 112                     sys.exit(1)
 113                 conf.env[found] = False
 114                 return False
 115
 116     minversion = minimum_library_version(conf, libname, minversion)
 117
 118     # try pkgconfig first
 119     if conf.check_cfg(package=libname,
 120                       args='"%s >= %s" --cflags --libs' % (libname, minversion),
 121                       msg='Checking for system %s >= %s' % (libname, minversion)):
 122         conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 123         conf.env[found] = True
 124         if implied_deps:
 125             conf.SET_SYSLIB_DEPS(libname, implied_deps)
 126         return True
 127     if checkfunctions is not None:
 128         headers_ok = True
 129         if require_headers and headers and not conf.CHECK_HEADERS(headers):
 130             headers_ok = False
 131         if headers_ok and conf.CHECK_FUNCS_IN(checkfunctions, libname, headers=headers, empty_decl=False):
 132             conf.env[found] = True
 133             if implied_deps:
 134                 conf.SET_SYSLIB_DEPS(libname, implied_deps)
 135             return True
 136     conf.env[found] = False
 137     if not conf.LIB_MAY_BE_BUNDLED(libname):
 138         Logs.error('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
 139         sys.exit(1)
 140     return False
 141
 142 def NONSHARED_BINARY(bld, name):
 143     '''return True if a binary should be built without non-system shared libs'''
 144     if bld.env.DISABLE_SHARED:
 145         return True
 146     return target_in_list(name, bld.env.NONSHARED_BINARIES, False)
 147 Build.BuildContext.NONSHARED_BINARY = NONSHARED_BINARY
 148
 149