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