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
  85 @conf
  86 def CHECK_PREREQUISITES(conf, prereqs):
  87     missing = []
  88     for syslib in TO_LIST(prereqs):
  89         f = 'FOUND_SYSTEMLIB_%s' % syslib
  90         if not f in conf.env:
  91             missing.append(syslib)
  92     return missing
  93
  94
  95 @runonce
  96 @conf
  97 def CHECK_BUNDLED_SYSTEM_PKG(conf, libname, minversion='0.0.0',
  98         onlyif=None, implied_deps=None, pkg=None):
  99     '''check if a library is available as a system library.
 100
 101     This only tries using pkg-config
 102     '''
 103     if conf.LIB_MUST_BE_BUNDLED(libname):
 104         return False
 105     found = 'FOUND_SYSTEMLIB_%s' % libname
 106     if found in conf.env:
 107         return conf.env[found]
 108
 109     # see if the library should only use a system version if another dependent
 110     # system version is found. That prevents possible use of mixed library
 111     # versions
 112     if onlyif:
 113         missing = conf.CHECK_PREREQUISITES(onlyif)
 114         if missing:
 115             if not conf.LIB_MAY_BE_BUNDLED(libname):
 116                 Logs.error('ERROR: Use of system library %s depends on missing system library/libraries %r' % (libname, missing))
 117                 sys.exit(1)
 118             conf.env[found] = False
 119             return False
 120
 121     minversion = minimum_library_version(conf, libname, minversion)
 122
 123     msg = 'Checking for system %s' % libname
 124     if minversion != '0.0.0':
 125         msg += ' >= %s' % minversion
 126
 127     if pkg is None:
 128         pkg = libname
 129
 130     if conf.check_cfg(package=pkg,
 131                       args='"%s >= %s" --cflags --libs' % (pkg, minversion),
 132                       msg=msg, uselib_store=libname.upper()):
 133         conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 134         conf.env[found] = True
 135         if implied_deps:
 136             conf.SET_SYSLIB_DEPS(libname, implied_deps)
 137         return True
 138     conf.env[found] = False
 139     if not conf.LIB_MAY_BE_BUNDLED(libname):
 140         Logs.error('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
 141         sys.exit(1)
 142     return False
 143
 144
 145 @runonce
 146 @conf
 147 def CHECK_BUNDLED_SYSTEM(conf, libname, minversion='0.0.0',
 148                          checkfunctions=None, headers=None,
 149                          onlyif=None, implied_deps=None,
 150                          require_headers=True):
 151     '''check if a library is available as a system library.
 152     this first tries via pkg-config, then if that fails
 153     tries by testing for a specified function in the specified lib
 154     '''
 155     if conf.LIB_MUST_BE_BUNDLED(libname):
 156         return False
 157     found = 'FOUND_SYSTEMLIB_%s' % libname
 158     if found in conf.env:
 159         return conf.env[found]
 160
 161     def check_functions_headers():
 162         '''helper function for CHECK_BUNDLED_SYSTEM'''
 163         if checkfunctions is None:
 164             return True
 165         if require_headers and headers and not conf.CHECK_HEADERS(headers, lib=libname):
 166             return False
 167         return conf.CHECK_FUNCS_IN(checkfunctions, libname, headers=headers,
 168                                    empty_decl=False, set_target=False)
 169
 170     # see if the library should only use a system version if another dependent
 171     # system version is found. That prevents possible use of mixed library
 172     # versions
 173     if onlyif:
 174         missing = conf.CHECK_PREREQUISITES(onlyif)
 175         if missing:
 176             if not conf.LIB_MAY_BE_BUNDLED(libname):
 177                 Logs.error('ERROR: Use of system library %s depends on missing system library/libraries %r' % (libname, missing))
 178                 sys.exit(1)
 179             conf.env[found] = False
 180             return False
 181
 182     minversion = minimum_library_version(conf, libname, minversion)
 183
 184     msg = 'Checking for system %s' % libname
 185     if minversion != '0.0.0':
 186         msg += ' >= %s' % minversion
 187
 188     # try pkgconfig first
 189     if (conf.check_cfg(package=libname,
 190                       args='"%s >= %s" --cflags --libs' % (libname, minversion),
 191                       msg=msg) and
 192         check_functions_headers()):
 193         conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 194         conf.env[found] = True
 195         if implied_deps:
 196             conf.SET_SYSLIB_DEPS(libname, implied_deps)
 197         return True
 198     if checkfunctions is not None:
 199         if check_functions_headers():
 200             conf.env[found] = True
 201             if implied_deps:
 202                 conf.SET_SYSLIB_DEPS(libname, implied_deps)
 203             conf.SET_TARGET_TYPE(libname, 'SYSLIB')
 204             return True
 205     conf.env[found] = False
 206     if not conf.LIB_MAY_BE_BUNDLED(libname):
 207         Logs.error('ERROR: System library %s of version %s not found, and bundling disabled' % (libname, minversion))
 208         sys.exit(1)
 209     return False
 210
 211
 212 def tuplize_version(version):
 213     return tuple([int(x) for x in version.split(".")])
 214
 215 @runonce
 216 @conf
 217 def CHECK_BUNDLED_SYSTEM_PYTHON(conf, libname, modulename, minversion='0.0.0'):
 218     '''check if a python module is available on the system and
 219     has the specified minimum version.
 220     '''
 221     if conf.LIB_MUST_BE_BUNDLED(libname):
 222         return False
 223
 224     # see if the library should only use a system version if another dependent
 225     # system version is found. That prevents possible use of mixed library
 226     # versions
 227     minversion = minimum_library_version(conf, libname, minversion)
 228
 229     try:
 230         m = __import__(modulename)
 231     except ImportError:
 232         found = False
 233     else:
 234         try:
 235             version = m.__version__
 236         except AttributeError:
 237             found = False
 238         else:
 239             found = tuplize_version(version) >= tuplize_version(minversion)
 240     if not found and not conf.LIB_MAY_BE_BUNDLED(libname):
 241         Logs.error('ERROR: Python module %s of version %s not found, and bundling disabled' % (libname, minversion))
 242         sys.exit(1)
 243     return found
 244
 245
 246 def NONSHARED_BINARY(bld, name):
 247     '''return True if a binary should be built without non-system shared libs'''
 248     if bld.env.DISABLE_SHARED:
 249         return True
 250     return target_in_list(name, bld.env.NONSHARED_BINARIES, False)
 251 Build.BuildContext.NONSHARED_BINARY = NONSHARED_BINARY
 252
 253