buildtools/wafsamba/samba_autoconf.py

   1 # a waf tool to add autoconf-like macros to the configure section
   2
   3 import Build, os, Options
   4 import string
   5 from Configure import conf
   6 from samba_utils import *
   7
   8 ####################################################
   9 # some autoconf like helpers, to make the transition
  10 # to waf a bit easier for those used to autoconf
  11 # m4 files
  12
  13 @runonce
  14 @conf
  15 def DEFINE(conf, d, v, add_to_cflags=False):
  16     '''define a config option'''
  17     conf.define(d, v, quote=False)
  18     if add_to_cflags:
  19         conf.env.append_value('CCDEFINES', d + '=' + str(v))
  20
  21 @runonce
  22 def CHECK_HEADER(conf, h, add_headers=True):
  23     '''check for a header'''
  24     if conf.check(header_name=h) and add_headers:
  25         conf.env.hlist.append(h)
  26         return True
  27     return False
  28
  29
  30 @conf
  31 def CHECK_HEADERS(conf, list, add_headers=True):
  32     '''check for a list of headers'''
  33     ret = True
  34     for hdr in TO_LIST(list):
  35         if not CHECK_HEADER(conf, hdr, add_headers):
  36             ret = False
  37     return ret
  38
  39
  40 @conf
  41 def CHECK_TYPES(conf, list):
  42     '''check for a list of types'''
  43     ret = True
  44     lst = TO_LIST(list)
  45     for t in TO_LIST(list):
  46         if not conf.check(type_name=t, header_name=conf.env.hlist):
  47             ret = False
  48     return ret
  49
  50
  51 @conf
  52 def CHECK_TYPE_IN(conf, t, hdr, define=None):
  53     '''check for a type in a specific header'''
  54     if conf.check(header_name=hdr):
  55         if define is None:
  56             ret = conf.check(type_name=t, header_name=hdr)
  57         else:
  58             ret = conf.check(type_name=t, header_name=hdr, define_name=define)
  59         return ret
  60     return False
  61
  62
  63 @conf
  64 def CHECK_TYPE(conf, t, alternate=None, headers=None, define=None):
  65     '''check for a type with an alternate'''
  66     if headers is None:
  67         headers = conf.env.hlist
  68     if define is not None:
  69         ret = conf.check(type_name=t, header_name=headers, define_name=define)
  70     else:
  71         ret = conf.check(type_name=t, header_name=headers)
  72     if not ret and alternate is not None:
  73         conf.DEFINE(t, alternate)
  74     return ret
  75
  76
  77 @conf
  78 def CHECK_VARIABLE(conf, v, define=None, always=False, headers=None):
  79     '''check for a variable declaration (or define)'''
  80     hdrs=''
  81     if headers is not None:
  82         hlist = TO_LIST(headers)
  83     else:
  84         hlist = conf.env.hlist
  85     for h in hlist:
  86         hdrs += '#include <%s>\n' % h
  87     if define is None:
  88         define = 'HAVE_%s' % v.upper()
  89     if conf.check(fragment=
  90                   '''
  91                   %s
  92                   int main(void) {
  93                     #ifndef %s
  94                     void *_x; _x=(void *)&%s;
  95                     #endif
  96                     return 0;
  97                   }
  98                   ''' % (hdrs, v, v),
  99                   execute=0,
 100                   msg="Checking for variable %s" % v):
 101         conf.DEFINE(define, 1)
 102         return True
 103     elif always:
 104         conf.DEFINE(define, 0)
 105         return False
 106
 107 @conf
 108 def CHECK_DECLS(conf, vars, reverse=False, headers=None):
 109     '''check a list of variable declarations, using the HAVE_DECL_xxx form
 110        of define
 111
 112        When reverse==True then use HAVE_xxx_DECL instead of HAVE_DECL_xxx
 113        '''
 114     ret = True
 115     for v in TO_LIST(vars):
 116         if not reverse:
 117             define='HAVE_DECL_%s' % v.upper()
 118         else:
 119             define='HAVE_%s_DECL' % v.upper()
 120         if not CHECK_VARIABLE(conf, v, define=define, headers=headers):
 121             ret = False
 122     return ret
 123
 124
 125 @runonce
 126 def CHECK_FUNC(conf, f, checklink=False):
 127     '''check for a function'''
 128     if checklink:
 129         return CHECK_CODE(conf, '%s()' % f, execute=False, define='HAVE_%s' % f.upper())
 130     return conf.check(function_name=f, header_name=conf.env.hlist)
 131
 132
 133 @conf
 134 def CHECK_FUNCS(conf, list, checklink=False):
 135     '''check for a list of functions'''
 136     ret = True
 137     for f in TO_LIST(list):
 138         if not CHECK_FUNC(conf, f, checklink):
 139             ret = False
 140     return ret
 141
 142
 143 @conf
 144 def CHECK_SIZEOF(conf, vars, headers=None, define=None):
 145     '''check the size of a type'''
 146     hdrs=''
 147     if headers is not None:
 148         hlist = TO_LIST(headers)
 149     else:
 150         hlist = conf.env.hlist
 151     for h in hlist:
 152         hdrs += '#include <%s>\n' % h
 153     for v in TO_LIST(vars):
 154         if define is None:
 155             define_name = 'SIZEOF_%s' % string.replace(v.upper(), ' ', '_')
 156         else:
 157             define_name = define
 158         conf.check(fragment=
 159                    '''
 160                   %s
 161                   int main(void) {
 162                     printf("%%u\\n", (unsigned)sizeof(%s));
 163                     return 0;
 164                   }
 165                   ''' % (hdrs, v),
 166                    execute=1,
 167                    define_ret=True,
 168                    define_name=define_name,
 169                    quote=False,
 170                    msg="Checking size of %s" % v)
 171
 172
 173 @conf
 174 def CHECK_CODE(conf, code, define,
 175                always=False, execute=False, addmain=True, mandatory=False,
 176                headers=None, msg=None, cflags='', includes='# .',
 177                local_include=True):
 178     '''check if some code compiles and/or runs'''
 179     hdrs=''
 180     if headers is not None:
 181         hlist = TO_LIST(headers)
 182     else:
 183         hlist = conf.env.hlist
 184     for h in hlist:
 185         hdrs += '#include <%s>\n' % h
 186
 187     if execute:
 188         execute = 1
 189     else:
 190         execute = 0
 191
 192     if addmain:
 193         fragment='#include "__confdefs.h"\n%s\n int main(void) { %s; return 0; }' % (hdrs, code)
 194     else:
 195         fragment='#include "__confdefs.h"\n%s\n%s' % (hdrs, code)
 196
 197     conf.write_config_header('__confdefs.h', top=True)
 198
 199     if msg is None:
 200         msg="Checking for %s" % define
 201
 202     # include the directory containing __confdefs.h
 203     cflags += ' -I../../default'
 204
 205     if local_include:
 206         cflags += ' -I%s' % conf.curdir
 207
 208     if conf.check(fragment=fragment,
 209                   execute=execute,
 210                   define_name = define,
 211                   mandatory = mandatory,
 212                   ccflags=TO_LIST(cflags),
 213                   includes=includes,
 214                   msg=msg):
 215         conf.DEFINE(define, 1)
 216         return True
 217     if always:
 218         conf.DEFINE(define, 0)
 219     return False
 220
 221
 222
 223 @conf
 224 def CHECK_STRUCTURE_MEMBER(conf, structname, member,
 225                            always=False, define=None, headers=None):
 226     '''check for a structure member'''
 227     hdrs=''
 228     if headers is not None:
 229         hlist = TO_LIST(headers)
 230     else:
 231         hlist = conf.env.hlist
 232     for h in hlist:
 233         hdrs += '#include <%s>\n' % h
 234     if define is None:
 235         define = 'HAVE_%s' % member.upper()
 236     if conf.check(fragment=
 237                   '''
 238                   %s
 239                   int main(void) {
 240                     %s s;
 241                     void *_x; _x=(void *)&s.%s;
 242                     return 0;
 243                   }
 244                   ''' % (hdrs, structname, member),
 245                   execute=0,
 246                   msg="Checking for member %s in %s" % (member, structname)):
 247         conf.DEFINE(define, 1)
 248         return True
 249     elif always:
 250         conf.DEFINE(define, 0)
 251         return False
 252
 253
 254 @conf
 255 def CHECK_CFLAGS(conf, cflags, variable):
 256     '''check if the given cflags are accepted by the compiler'''
 257     if conf.check(fragment='int main(void) { return 0; }',
 258                   execute=0,
 259                   ccflags=cflags,
 260                   msg="Checking compiler accepts %s" % cflags):
 261         conf.env[variable] = cflags
 262         return True
 263     return False
 264
 265
 266 #################################################
 267 # return True if a configuration option was found
 268 @conf
 269 def CONFIG_SET(conf, option):
 270     return (option in conf.env) and (conf.env[option] != ())
 271 Build.BuildContext.CONFIG_SET = CONFIG_SET
 272
 273
 274 ###########################################################
 275 # check that the functions in 'list' are available in 'library'
 276 # if they are, then make that library available as a dependency
 277 #
 278 # if the library is not available and mandatory==True, then
 279 # raise an error.
 280 #
 281 # If the library is not available and mandatory==False, then
 282 # add the library to the list of dependencies to remove from
 283 # build rules
 284 #
 285 # optionally check for the functions first in libc
 286 @conf
 287 def CHECK_FUNCS_IN(conf, list, library, mandatory=False, checklibc=False):
 288     # first see if the functions are in libc
 289     if checklibc:
 290         remaining = []
 291         for f in TO_LIST(list):
 292             if not CHECK_FUNC(conf, f):
 293                 remaining.append(f)
 294     else:
 295         remaining = TO_LIST(list)
 296
 297     if remaining == []:
 298         SET_TARGET_TYPE(conf, library, 'EMPTY')
 299         return True
 300
 301     if not conf.check(lib=library, uselib_store=library):
 302         conf.ASSERT(not mandatory,
 303                     "Mandatory library '%s' not found for functions '%s'" % (library, list))
 304         # if it isn't a mandatory library, then remove it from dependency lists
 305         SET_TARGET_TYPE(conf, library, 'EMPTY')
 306         return False
 307
 308     conf.define('HAVE_LIB%s' % string.replace(library.upper(),'-','_'), 1)
 309
 310     ret = True
 311     for f in remaining:
 312         if not conf.check(function_name=f, lib=library, header_name=conf.env.hlist):
 313             ret = False
 314     conf.env['LIB_' + library.upper()] = library
 315     LOCAL_CACHE_SET(conf, 'TARGET_TYPE', library, 'SYSLIB')
 316     return ret
 317
 318
 319 #################################################
 320 # write out config.h in the right directory
 321 @conf
 322 def SAMBA_CONFIG_H(conf, path=None):
 323     # we don't want to produce a config.h in places like lib/replace
 324     # when we are building projects that depend on lib/replace
 325     if os.path.realpath(conf.curdir) != os.path.realpath(Options.launch_dir):
 326         return
 327     if path is None:
 328         conf.write_config_header('config.h', top=True)
 329     else:
 330         conf.write_config_header(path)
 331
 332
 333 ##############################################################
 334 # setup a configurable path
 335 @conf
 336 def CONFIG_PATH(conf, name, default):
 337     if not name in conf.env:
 338         if default[0] == '/':
 339             conf.env[name] = default
 340         else:
 341             conf.env[name] = conf.env['PREFIX'] + default
 342     conf.define(name, conf.env[name], quote=True)
 343
 344 ##############################################################
 345 # add some CFLAGS to the command line
 346 @conf
 347 def ADD_CFLAGS(conf, flags):
 348     if not 'EXTRA_CFLAGS' in conf.env:
 349         conf.env['EXTRA_CFLAGS'] = []
 350     conf.env['EXTRA_CFLAGS'].extend(TO_LIST(flags))
 351
 352 ##############################################################
 353 # add some extra include directories to all builds
 354 @conf
 355 def ADD_EXTRA_INCLUDES(conf, includes):
 356     if not 'EXTRA_INCLUDES' in conf.env:
 357         conf.env['EXTRA_INCLUDES'] = []
 358     conf.env['EXTRA_INCLUDES'].extend(TO_LIST(includes))
 359
 360
 361 ##############################################################
 362 # work out the current flags. local flags are added first
 363 def CURRENT_CFLAGS(bld, target, cflags):
 364     if not 'EXTRA_CFLAGS' in bld.env:
 365         list = []
 366     else:
 367         list = bld.env['EXTRA_CFLAGS'];
 368     ret = TO_LIST(cflags)
 369     ret.extend(list)
 370     return ret