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
  10     # we now use the same private name for libraries as the public name.
  11     # see http://git.samba.org/?p=tridge/junkcode.git;a=tree;f=shlib for a
  12     # demonstration that this is the right thing to do
  13     # also see http://lists.samba.org/archive/samba-technical/2011-January/075816.html
  14     return name
  15
  16
  17 def target_in_list(target, lst, default):
  18     for l in lst:
  19         if target == l:
  20             return True
  21         if '!' + target == l:
  22             return False
  23         if l == 'ALL':
  24             return True
  25         if l == 'NONE':
  26             return False
  27     return default
  28
  29
  30 def BUILTIN_LIBRARY(bld, name):
  31     '''return True if a library should be builtin
  32        instead of being built as a shared lib'''
  33     if bld.env.DISABLE_SHARED:
  34         return True
  35     return target_in_list(name, bld.env.BUILTIN_LIBRARIES, False)
  36 Build.BuildContext.BUILTIN_LIBRARY = BUILTIN_LIBRARY
  37
  38
  39 def BUILTIN_DEFAULT(opt, builtins):
  40     '''set a comma separated default list of builtin libraries for this package'''
  41     if 'BUILTIN_LIBRARIES_DEFAULT' in Options.options:
  42         return
  43     Options.options['BUILTIN_LIBRARIES_DEFAULT'] = builtins
  44 Options.Handler.BUILTIN_DEFAULT = BUILTIN_DEFAULT
  45
  46
  47 def PRIVATE_EXTENSION_DEFAULT(opt, extension, noextension=''):
  48     '''set a default private library extension'''
  49     if 'PRIVATE_EXTENSION_DEFAULT' in Options.options:
  50         return
  51     Options.options['PRIVATE_EXTENSION_DEFAULT'] = extension
  52     Options.options['PRIVATE_EXTENSION_EXCEPTION'] = noextension
  53 Options.Handler.PRIVATE_EXTENSION_DEFAULT = PRIVATE_EXTENSION_DEFAULT
  54
  55
  56 def minimum_library_version(conf, libname, default):
  57     '''allow override of mininum system library version'''
  58
  59     minlist = Options.options.MINIMUM_LIBRARY_VERSION
  60     if not minlist:
  61         return default
  62
  63     for m in minlist.split(','):
  64         a = m.split(':')
  65         if len(a) != 2:
  66             Logs.error("Bad syntax for --minimum-library-version of %s" % m)
  67             sys.exit(1)
  68         if a[0] == libname:
  69             return a[1]
  70     return default
  71
  72
  73 @conf
  74 def LIB_MAY_BE_BUNDLED(conf, libname):
  75     return ('NONE' not in conf.env.BUNDLED_LIBS and
  76             '!%s' % libname not in conf.env.BUNDLED_LIBS)
  77
  78
  79 @conf
  80 def LIB_MUST_BE_BUNDLED(conf, libname):
  81     return ('ALL' in conf.env.BUNDLED_LIBS or
  82             libname in conf.env.BUNDLED_LIBS)
  83
  84 @conf
  85 def LIB_MUST_BE_PRIVATE(conf, libname):
  86     return ('ALL' in conf.env.PRIVATE_LIBS or
  87             libname in conf.env.PRIVATE_LIBS)
  88
  89 @conf
  90 def CHECK_PREREQUISITES(conf, prereqs):
  91     missing = []
  92     for syslib in TO_LIST(prereqs):
  93         f = 'FOUND_SYSTEMLIB_%s' % syslib
  94         if not f in conf.env:
  95             missing.append(syslib)
  96     return missing
  97
  98
  99 @runonce
 100 @conf
 101 def CHECK_BUNDLED_SYSTEM_PKG(conf, libname, minversion='0.0.0',
 102         onlyif=None, implied_deps=None, pkg=None):
 103     '''check if a library is available as a system library.
 104
 105     This only tries using pkg-config
 106     '''
 107     if conf.LIB_MUST_BE_BUNDLED(libname):
 108         return False
 109     found = 'FOUND_SYSTEMLIB_%s' % libname
 110     if found in conf.env:
 111         return conf.env[found]
 112
 113     # see if the library should only use a system version if another dependent
 114     # system version is found. That prevents possible use of mixed library
 115     # versions
 116     if onlyif:
 117         missing = conf.CHECK_PREREQUISITES(onlyif)
 118         if missing:
 119             if not conf.LIB_MAY_BE_BUNDLED(libname):
 120                 Logs.error('ERROR: Use of system library %s depends on missing system library/libraries %r' % (libname, missing))
 121                 sys.exit(1)
 122             conf.env[found] = False
 123             return False
 124
 125     minversion = minimum_library_version(conf, libname, minversion)
 126
 127     msg = 'Checking for system %s' % libname
 128     if minversion != '0.0.0':
 129         msg += ' >= %s' % minversion
 130
 131     if pkg is None:
 132         pkg = libname
 133
 134     if conf.check_cfg(package=pkg,
 135                       args='"%s >= %s" --cflags --libs' % (pkg, minversion),
 136                       msg=msg, uselib_store=libname.upper()):
 137         conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 138         conf.env[found] = True
 139         if implied_deps:
 140             conf.SET_SYSLIB_DEPS(libname, implied_deps)
 141         return True
 142     conf.env[found] = False
 143     if not conf.LIB_MAY_BE_BUNDLED(libname):
 144         Logs.error('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
 145         sys.exit(1)
 146     return False
 147
 148
 149 @runonce
 150 @conf
 151 def CHECK_BUNDLED_SYSTEM(conf, libname, minversion='0.0.0',
 152                          checkfunctions=None, headers=None,
 153                          onlyif=None, implied_deps=None,
 154                          require_headers=True):
 155     '''check if a library is available as a system library.
 156     this first tries via pkg-config, then if that fails
 157     tries by testing for a specified function in the specified lib
 158     '''
 159     if conf.LIB_MUST_BE_BUNDLED(libname):
 160         return False
 161     found = 'FOUND_SYSTEMLIB_%s' % libname
 162     if found in conf.env:
 163         return conf.env[found]
 164
 165     def check_functions_headers():
 166         '''helper function for CHECK_BUNDLED_SYSTEM'''
 167         if checkfunctions is None:
 168             return True
 169         if require_headers and headers and not conf.CHECK_HEADERS(headers, lib=libname):
 170             return False
 171         return conf.CHECK_FUNCS_IN(checkfunctions, libname, headers=headers,
 172                                    empty_decl=False, set_target=False)
 173
 174     # see if the library should only use a system version if another dependent
 175     # system version is found. That prevents possible use of mixed library
 176     # versions
 177     if onlyif:
 178         missing = conf.CHECK_PREREQUISITES(onlyif)
 179         if missing:
 180             if not conf.LIB_MAY_BE_BUNDLED(libname):
 181                 Logs.error('ERROR: Use of system library %s depends on missing system library/libraries %r' % (libname, missing))
 182                 sys.exit(1)
 183             conf.env[found] = False
 184             return False
 185
 186     minversion = minimum_library_version(conf, libname, minversion)
 187
 188     msg = 'Checking for system %s' % libname
 189     if minversion != '0.0.0':
 190         msg += ' >= %s' % minversion
 191
 192     # try pkgconfig first
 193     if (conf.check_cfg(package=libname,
 194                       args='"%s >= %s" --cflags --libs' % (libname, minversion),
 195                       msg=msg) and
 196         check_functions_headers()):
 197         conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 198         conf.env[found] = True
 199         if implied_deps:
 200             conf.SET_SYSLIB_DEPS(libname, implied_deps)
 201         return True
 202     if checkfunctions is not None:
 203         if check_functions_headers():
 204             conf.env[found] = True
 205             if implied_deps:
 206                 conf.SET_SYSLIB_DEPS(libname, implied_deps)
 207             conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 208             return True
 209     conf.env[found] = False
 210     if not conf.LIB_MAY_BE_BUNDLED(libname):
 211         Logs.error('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
 212         sys.exit(1)
 213     return False
 214
 215
 216 def tuplize_version(version):
 217     return tuple([int(x) for x in version.split(".")])
 218
 219 @runonce
 220 @conf
 221 def CHECK_BUNDLED_SYSTEM_PYTHON(conf, libname, modulename, minversion='0.0.0'):
 222     '''check if a python module is available on the system and
 223     has the specified minimum version.
 224     '''
 225     if conf.LIB_MUST_BE_BUNDLED(libname):
 226         return False
 227
 228     # see if the library should only use a system version if another dependent
 229     # system version is found. That prevents possible use of mixed library
 230     # versions
 231     minversion = minimum_library_version(conf, libname, minversion)
 232
 233     try:
 234         m = __import__(modulename)
 235     except ImportError:
 236         found = False
 237     else:
 238         try:
 239             version = m.__version__
 240         except AttributeError:
 241             found = False
 242         else:
 243             found = tuplize_version(version) >= tuplize_version(minversion)
 244     if not found and not conf.LIB_MAY_BE_BUNDLED(libname):
 245         Logs.error('ERROR: Python module %s of version %s not found, and bundling disabled' % (libname, minversion))
 246         sys.exit(1)
 247     return found
 248
 249
 250 def NONSHARED_BINARY(bld, name):
 251     '''return True if a binary should be built without non-system shared libs'''
 252     if bld.env.DISABLE_SHARED:
 253         return True
 254     return target_in_list(name, bld.env.NONSHARED_BINARIES, False)
 255 Build.BuildContext.NONSHARED_BINARY = NONSHARED_BINARY
 256
 257