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
  22 def CHECK_HEADER(conf, h, add_headers=True):
  23     '''check for a header'''
  24     d = 'HAVE_%s' % string.replace(h.upper(), '/', '_')
  25     if CONFIG_SET(conf, d):
  26         if add_headers:
  27             conf.env.hlist.append(h)
  28             conf.env.hlist = unique_list(conf.env.hlist)
  29         return True
  30     ret = conf.check(header_name=h)
  31     if ret and add_headers:
  32         conf.env.hlist.append(h)
  33         conf.env.hlist = unique_list(conf.env.hlist)
  34     return ret
  35
  36
  37 @conf
  38 def CHECK_HEADERS(conf, list, add_headers=True):
  39     '''check for a list of headers'''
  40     ret = True
  41     for hdr in TO_LIST(list):
  42         if not CHECK_HEADER(conf, hdr, add_headers):
  43             ret = False
  44     return ret
  45
  46
  47 @conf
  48 def CHECK_TYPES(conf, list):
  49     '''check for a list of types'''
  50     ret = True
  51     lst = TO_LIST(list)
  52     for t in TO_LIST(list):
  53         if not conf.check(type_name=t, header_name=conf.env.hlist):
  54             ret = False
  55     return ret
  56
  57
  58 @conf
  59 def CHECK_TYPE_IN(conf, t, hdr, define=None):
  60     '''check for a type in a specific header'''
  61     if conf.check(header_name=hdr):
  62         if define is None:
  63             ret = conf.check(type_name=t, header_name=hdr)
  64         else:
  65             ret = conf.check(type_name=t, header_name=hdr, define_name=define)
  66         return ret
  67     return False
  68
  69
  70 @conf
  71 def CHECK_TYPE(conf, t, alternate=None, headers=None, define=None):
  72     '''check for a type with an alternate'''
  73     if headers is None:
  74         headers = conf.env.hlist
  75     if define is not None:
  76         ret = conf.check(type_name=t, header_name=headers, define_name=define)
  77     else:
  78         ret = conf.check(type_name=t, header_name=headers)
  79     if not ret and alternate is not None:
  80         conf.DEFINE(t, alternate)
  81     return ret
  82
  83
  84 @conf
  85 def CHECK_VARIABLE(conf, v, define=None, always=False, headers=None):
  86     '''check for a variable declaration (or define)'''
  87     hdrs=''
  88     if headers is not None:
  89         hlist = TO_LIST(headers)
  90     else:
  91         hlist = conf.env.hlist
  92     for h in hlist:
  93         hdrs += '#include <%s>\n' % h
  94     if define is None:
  95         define = 'HAVE_%s' % v.upper()
  96     if conf.check(fragment=
  97                   '''
  98                   %s
  99                   int main(void) {
 100                     #ifndef %s
 101                     void *_x; _x=(void *)&%s;
 102                     #endif
 103                     return 0;
 104                   }
 105                   ''' % (hdrs, v, v),
 106                   execute=0,
 107                   msg="Checking for variable %s" % v):
 108         conf.DEFINE(define, 1)
 109         return True
 110     elif always:
 111         conf.DEFINE(define, 0)
 112         return False
 113
 114 @conf
 115 def CHECK_DECLS(conf, vars, reverse=False, headers=None):
 116     '''check a list of variable declarations, using the HAVE_DECL_xxx form
 117        of define
 118
 119        When reverse==True then use HAVE_xxx_DECL instead of HAVE_DECL_xxx
 120        '''
 121     ret = True
 122     for v in TO_LIST(vars):
 123         if not reverse:
 124             define='HAVE_DECL_%s' % v.upper()
 125         else:
 126             define='HAVE_%s_DECL' % v.upper()
 127         if not CHECK_VARIABLE(conf, v, define=define, headers=headers):
 128             ret = False
 129     return ret
 130
 131
 132 def CHECK_FUNC(conf, f, checklink=False, header=''):
 133     '''check for a function'''
 134     hlist = conf.env.hlist[:]
 135     for h in TO_LIST(header):
 136         if CHECK_HEADER(conf, h, add_headers=False):
 137             hlist.append(h)
 138     define='HAVE_%s' % f.upper()
 139     if CONFIG_SET(conf, define):
 140         return True
 141     if checklink:
 142         return CHECK_CODE(conf, 'void *x = (void *)%s' % f, execute=False, define=define)
 143
 144     return conf.check_cc(function_name=f, header_name=hlist)
 145
 146
 147 @conf
 148 def CHECK_FUNCS(conf, list, checklink=False, header=''):
 149     '''check for a list of functions'''
 150     ret = True
 151     for f in TO_LIST(list):
 152         if not CHECK_FUNC(conf, f, checklink=checklink, header=header):
 153             ret = False
 154     return ret
 155
 156
 157 @conf
 158 def CHECK_SIZEOF(conf, vars, headers=None, define=None):
 159     '''check the size of a type'''
 160     hdrs=''
 161     if headers is not None:
 162         hlist = TO_LIST(headers)
 163     else:
 164         hlist = conf.env.hlist
 165     for h in hlist:
 166         hdrs += '#include <%s>\n' % h
 167     for v in TO_LIST(vars):
 168         if define is None:
 169             define_name = 'SIZEOF_%s' % string.replace(v.upper(), ' ', '_')
 170         else:
 171             define_name = define
 172         conf.check(fragment=
 173                    '''
 174                   %s
 175                   int main(void) {
 176                     printf("%%u\\n", (unsigned)sizeof(%s));
 177                     return 0;
 178                   }
 179                   ''' % (hdrs, v),
 180                    execute=1,
 181                    define_ret=True,
 182                    define_name=define_name,
 183                    quote=False,
 184                    msg="Checking size of %s" % v)
 185
 186
 187 @conf
 188 def CHECK_CODE(conf, code, define,
 189                always=False, execute=False, addmain=True, mandatory=False,
 190                headers=None, msg=None, cflags='', includes='# .',
 191                local_include=True):
 192     '''check if some code compiles and/or runs'''
 193     hdrs=''
 194     if headers is not None:
 195         hlist = TO_LIST(headers)
 196     else:
 197         hlist = conf.env.hlist
 198     for h in hlist:
 199         hdrs += '#include <%s>\n' % h
 200
 201     if execute:
 202         execute = 1
 203     else:
 204         execute = 0
 205
 206     if addmain:
 207         fragment='#include "__confdefs.h"\n%s\n int main(void) { %s; return 0; }' % (hdrs, code)
 208     else:
 209         fragment='#include "__confdefs.h"\n%s\n%s' % (hdrs, code)
 210
 211     conf.write_config_header('__confdefs.h', top=True)
 212
 213     if msg is None:
 214         msg="Checking for %s" % define
 215
 216     # include the directory containing __confdefs.h
 217     cflags += ' -I../../default'
 218
 219     if local_include:
 220         cflags += ' -I%s' % conf.curdir
 221
 222     if conf.check(fragment=fragment,
 223                   execute=execute,
 224                   define_name = define,
 225                   mandatory = mandatory,
 226                   ccflags=TO_LIST(cflags),
 227                   includes=includes,
 228                   msg=msg):
 229         conf.DEFINE(define, 1)
 230         return True
 231     if always:
 232         conf.DEFINE(define, 0)
 233     return False
 234
 235
 236
 237 @conf
 238 def CHECK_STRUCTURE_MEMBER(conf, structname, member,
 239                            always=False, define=None, headers=None):
 240     '''check for a structure member'''
 241     hdrs=''
 242     if headers is not None:
 243         hlist = TO_LIST(headers)
 244     else:
 245         hlist = conf.env.hlist
 246     for h in hlist:
 247         hdrs += '#include <%s>\n' % h
 248     if define is None:
 249         define = 'HAVE_%s' % member.upper()
 250     if conf.check(fragment=
 251                   '''
 252                   %s
 253                   int main(void) {
 254                     %s s;
 255                     void *_x; _x=(void *)&s.%s;
 256                     return 0;
 257                   }
 258                   ''' % (hdrs, structname, member),
 259                   execute=0,
 260                   msg="Checking for member %s in %s" % (member, structname)):
 261         conf.DEFINE(define, 1)
 262         return True
 263     elif always:
 264         conf.DEFINE(define, 0)
 265         return False
 266
 267
 268 @conf
 269 def CHECK_CFLAGS(conf, cflags, variable):
 270     '''check if the given cflags are accepted by the compiler'''
 271     if conf.check(fragment='int main(void) { return 0; }',
 272                   execute=0,
 273                   ccflags=cflags,
 274                   msg="Checking compiler accepts %s" % cflags):
 275         conf.env[variable] = cflags
 276         return True
 277     return False
 278
 279
 280 #################################################
 281 # return True if a configuration option was found
 282 @conf
 283 def CONFIG_SET(conf, option):
 284     return (option in conf.env) and (conf.env[option] != ())
 285 Build.BuildContext.CONFIG_SET = CONFIG_SET
 286
 287
 288 ###########################################################
 289 # check that the functions in 'list' are available in 'library'
 290 # if they are, then make that library available as a dependency
 291 #
 292 # if the library is not available and mandatory==True, then
 293 # raise an error.
 294 #
 295 # If the library is not available and mandatory==False, then
 296 # add the library to the list of dependencies to remove from
 297 # build rules
 298 #
 299 # optionally check for the functions first in libc
 300 @conf
 301 def CHECK_FUNCS_IN(conf, list, library, mandatory=False, checklibc=False, header=''):
 302     remaining = TO_LIST(list)
 303     liblist   = TO_LIST(library)
 304
 305     hlist = conf.env.hlist[:]
 306     for h in TO_LIST(header):
 307         if CHECK_HEADER(conf, h, add_headers=False):
 308             hlist.append(h)
 309
 310     # check if some already found
 311     for f in remaining[:]:
 312         if CONFIG_SET(conf, 'HAVE_%s' % f.upper()):
 313             remaining.remove(f)
 314
 315     # see if the functions are in libc
 316     if checklibc:
 317         for f in remaining[:]:
 318             if CHECK_FUNC(conf, f, checklink=True, header=header):
 319                 remaining.remove(f)
 320
 321     if remaining == []:
 322         for lib in liblist:
 323             if GET_TARGET_TYPE(conf, lib) != 'SYSLIB':
 324                 SET_TARGET_TYPE(conf, lib, 'EMPTY')
 325         return True
 326
 327     ret = True
 328     for lib in liblist[:]:
 329         if GET_TARGET_TYPE(conf, lib):
 330             continue
 331         if not conf.check(lib=lib, uselib_store=lib):
 332             conf.ASSERT(not mandatory,
 333                         "Mandatory library '%s' not found for functions '%s'" % (lib, list))
 334             # if it isn't a mandatory library, then remove it from dependency lists
 335             SET_TARGET_TYPE(conf, lib, 'EMPTY')
 336             ret = False
 337         else:
 338             conf.define('HAVE_LIB%s' % string.replace(lib.upper(),'-','_'), 1)
 339
 340     if not ret:
 341         return ret
 342
 343     ret = True
 344     for f in remaining:
 345         if not conf.check_cc(function_name=f, lib=liblist, header_name=hlist):
 346             ret = False
 347
 348     if not ret:
 349         return ret
 350
 351     for lib in liblist:
 352         if GET_TARGET_TYPE(conf, lib):
 353             continue
 354         conf.env['LIB_' + lib.upper()] = lib
 355         LOCAL_CACHE_SET(conf, 'TARGET_TYPE', lib, 'SYSLIB')
 356
 357     return ret
 358
 359
 360 #################################################
 361 # write out config.h in the right directory
 362 @conf
 363 def SAMBA_CONFIG_H(conf, path=None):
 364     # we don't want to produce a config.h in places like lib/replace
 365     # when we are building projects that depend on lib/replace
 366     if os.path.realpath(conf.curdir) != os.path.realpath(Options.launch_dir):
 367         return
 368     if path is None:
 369         conf.write_config_header('config.h', top=True)
 370     else:
 371         conf.write_config_header(path)
 372
 373
 374 ##############################################################
 375 # setup a configurable path
 376 @conf
 377 def CONFIG_PATH(conf, name, default):
 378     if not name in conf.env:
 379         if default[0] == '/':
 380             conf.env[name] = default
 381         else:
 382             conf.env[name] = conf.env['PREFIX'] + default
 383     conf.define(name, conf.env[name], quote=True)
 384
 385 ##############################################################
 386 # add some CFLAGS to the command line
 387 @conf
 388 def ADD_CFLAGS(conf, flags):
 389     if not 'EXTRA_CFLAGS' in conf.env:
 390         conf.env['EXTRA_CFLAGS'] = []
 391     conf.env['EXTRA_CFLAGS'].extend(TO_LIST(flags))
 392
 393 ##############################################################
 394 # add some extra include directories to all builds
 395 @conf
 396 def ADD_EXTRA_INCLUDES(conf, includes):
 397     if not 'EXTRA_INCLUDES' in conf.env:
 398         conf.env['EXTRA_INCLUDES'] = []
 399     conf.env['EXTRA_INCLUDES'].extend(TO_LIST(includes))
 400
 401
 402 ##############################################################
 403 # work out the current flags. local flags are added first
 404 def CURRENT_CFLAGS(bld, target, cflags):
 405     if not 'EXTRA_CFLAGS' in bld.env:
 406         list = []
 407     else:
 408         list = bld.env['EXTRA_CFLAGS'];
 409     ret = TO_LIST(cflags)
 410     ret.extend(list)
 411     return ret