1 # a waf tool to add autoconf-like macros to the configure section
3 import Build, os, Options, preproc, Logs
5 from Configure import conf
6 from samba_utils import *
9 missing_headers = set()
11 ####################################################
12 # some autoconf like helpers, to make the transition
13 # to waf a bit easier for those used to autoconf
18 def DEFINE(conf, d, v, add_to_cflags=False, quote=False):
19 '''define a config option'''
20 conf.define(d, v, quote=quote)
22 conf.env.append_value('CCDEFINES', d + '=' + str(v))
24 def hlist_to_string(conf, headers=None):
25 '''convert a headers list to a set of #include lines'''
27 hlist = conf.env.hlist
30 hlist.extend(TO_LIST(headers))
32 hdrs += '#include <%s>\n' % h
37 def COMPOUND_START(conf, msg):
38 '''start a compound test'''
39 def null_check_message_1(self,*k,**kw):
41 def null_check_message_2(self,*k,**kw):
44 v = getattr(conf.env, 'in_compound', [])
45 if v != [] and v != 0:
46 conf.env.in_compound = v + 1
48 conf.check_message_1(msg)
49 conf.saved_check_message_1 = conf.check_message_1
50 conf.check_message_1 = null_check_message_1
51 conf.saved_check_message_2 = conf.check_message_2
52 conf.check_message_2 = null_check_message_2
53 conf.env.in_compound = 1
57 def COMPOUND_END(conf, result):
58 '''start a compound test'''
59 conf.env.in_compound -= 1
60 if conf.env.in_compound != 0:
62 conf.check_message_1 = conf.saved_check_message_1
63 conf.check_message_2 = conf.saved_check_message_2
64 p = conf.check_message_2
68 p('not found', 'YELLOW')
75 '''using the nolink type in conf.check() allows us to avoid
76 the link stage of a test, thus speeding it up for tests
77 that where linking is not needed'''
81 def CHECK_HEADER(conf, h, add_headers=False, lib=None):
82 '''check for a header'''
83 if h in missing_headers:
85 d = h.upper().replace('/', '_')
86 d = d.replace('.', '_')
88 if CONFIG_SET(conf, d):
90 if not h in conf.env.hlist:
91 conf.env.hlist.append(h)
94 (ccflags, ldflags) = library_flags(conf, lib)
96 hdrs = hlist_to_string(conf, headers=h)
97 ret = conf.check(fragment='%s\nint main(void) { return 0; }' % hdrs,
101 msg="Checking for header %s" % h)
103 missing_headers.add(h)
107 if add_headers and not h in conf.env.hlist:
108 conf.env.hlist.append(h)
113 def CHECK_HEADERS(conf, headers, add_headers=False, together=False, lib=None):
114 '''check for a list of headers
116 when together==True, then the headers accumulate within this test.
117 This is useful for interdependent headers
120 if not add_headers and together:
121 saved_hlist = conf.env.hlist[:]
122 set_add_headers = True
124 set_add_headers = add_headers
125 for hdr in TO_LIST(headers):
126 if not CHECK_HEADER(conf, hdr, set_add_headers, lib=lib):
128 if not add_headers and together:
129 conf.env.hlist = saved_hlist
133 def header_list(conf, headers=None, lib=None):
134 '''form a list of headers which exist, as a string'''
136 if headers is not None:
137 for h in TO_LIST(headers):
138 if CHECK_HEADER(conf, h, add_headers=False, lib=lib):
140 return hlist_to_string(conf, headers=hlist)
144 def CHECK_TYPE(conf, t, alternate=None, headers=None, define=None, lib=None, msg=None):
145 '''check for a single type'''
147 define = 'HAVE_' + t.upper().replace(' ', '_')
149 msg='Checking for %s' % t
150 ret = CHECK_CODE(conf, '%s _x' % t,
158 if not ret and alternate:
159 conf.DEFINE(t, alternate)
164 def CHECK_TYPES(conf, list, headers=None, define=None, alternate=None, lib=None):
165 '''check for a list of types'''
167 for t in TO_LIST(list):
168 if not CHECK_TYPE(conf, t, headers=headers,
169 define=define, alternate=alternate, lib=lib):
175 def CHECK_TYPE_IN(conf, t, headers=None, alternate=None, define=None):
176 '''check for a single type with a header'''
177 return CHECK_TYPE(conf, t, headers=headers, alternate=alternate, define=define)
181 def CHECK_VARIABLE(conf, v, define=None, always=False,
182 headers=None, msg=None, lib=None):
183 '''check for a variable declaration (or define)'''
185 define = 'HAVE_%s' % v.upper()
188 msg="Checking for variable %s" % v
190 return CHECK_CODE(conf,
193 void *_x; _x=(void *)&%s;
208 def CHECK_DECLS(conf, vars, reverse=False, headers=None, always=False):
209 '''check a list of variable declarations, using the HAVE_DECL_xxx form
212 When reverse==True then use HAVE_xxx_DECL instead of HAVE_DECL_xxx
215 for v in TO_LIST(vars):
217 define='HAVE_DECL_%s' % v.upper()
219 define='HAVE_%s_DECL' % v.upper()
220 if not CHECK_VARIABLE(conf, v,
223 msg='Checking for declaration of %s' % v,
229 def CHECK_FUNC(conf, f, link=True, lib=None, headers=None):
230 '''check for a function'''
231 define='HAVE_%s' % f.upper()
235 conf.COMPOUND_START('Checking for %s' % f)
237 if link is None or link == True:
238 ret = CHECK_CODE(conf,
239 # this is based on the autoconf strategy
241 #define %s __fake__%s
248 #if defined __stub_%s || defined __stub___%s
249 #error "bad glibc stub"
252 int main() { return %s(); }
253 ''' % (f, f, f, f, f, f, f),
262 msg='Checking for %s' % f)
265 ret = CHECK_CODE(conf,
266 # it might be a macro
267 'void *__x = (void *)%s' % f,
276 msg='Checking for macro %s' % f)
278 if not ret and (link is None or link == False):
279 ret = CHECK_VARIABLE(conf, f,
282 msg='Checking for declaration of %s' % f)
283 conf.COMPOUND_END(ret)
288 def CHECK_FUNCS(conf, list, link=True, lib=None, headers=None):
289 '''check for a list of functions'''
291 for f in TO_LIST(list):
292 if not CHECK_FUNC(conf, f, link=link, lib=lib, headers=headers):
298 def CHECK_SIZEOF(conf, vars, headers=None, define=None):
299 '''check the size of a type'''
301 for v in TO_LIST(vars):
304 v_define = 'SIZEOF_%s' % v.upper().replace(' ', '_')
305 if not CHECK_CODE(conf,
306 'printf("%%u\\n", (unsigned)sizeof(%s))' % v,
313 msg="Checking size of %s" % v):
320 def CHECK_CODE(conf, code, define,
321 always=False, execute=False, addmain=True,
322 add_headers=True, mandatory=False,
323 headers=None, msg=None, cflags='', includes='# .',
324 local_include=True, lib=None, link=True,
325 define_ret=False, quote=False):
326 '''check if some code compiles and/or runs'''
328 if CONFIG_SET(conf, define):
331 if headers is not None:
332 CHECK_HEADERS(conf, headers=headers, lib=lib)
335 hdrs = header_list(conf, headers=headers, lib=lib)
344 fragment='#include "__confdefs.h"\n%s\n int main(void) { %s; return 0; }\n' % (hdrs, code)
346 fragment='#include "__confdefs.h"\n%s\n%s\n' % (hdrs, code)
348 conf.write_config_header('__confdefs.h', top=True)
351 msg="Checking for %s" % define
353 # include the directory containing __confdefs.h
354 cflags += ' -I../../default'
357 cflags += ' -I%s' % conf.curdir
364 uselib = TO_LIST(lib)
366 (ccflags, ldflags) = library_flags(conf, uselib)
368 cflags = TO_LIST(cflags)
369 cflags.extend(ccflags)
371 exec_args = conf.SAMBA_CROSS_ARGS()
373 ret = conf.check(fragment=fragment,
375 define_name = define,
376 mandatory = mandatory,
385 define_ret=define_ret)
386 if not ret and CONFIG_SET(conf, define):
387 # sometimes conf.check() returns false, but it
388 # sets the define. Maybe a waf bug?
392 conf.DEFINE(define, 1)
395 conf.DEFINE(define, 0)
401 def CHECK_STRUCTURE_MEMBER(conf, structname, member,
402 always=False, define=None, headers=None):
403 '''check for a structure member'''
405 define = 'HAVE_%s' % member.upper()
406 return CHECK_CODE(conf,
407 '%s s; void *_x; _x=(void *)&s.%s' % (structname, member),
414 msg="Checking for member %s in %s" % (member, structname))
418 def CHECK_CFLAGS(conf, cflags):
419 '''check if the given cflags are accepted by the compiler
421 return conf.check(fragment='int main(void) { return 0; }\n',
425 msg="Checking compiler accepts %s" % cflags)
429 def CONFIG_SET(conf, option):
430 '''return True if a configuration option was found'''
431 return (option in conf.env) and (conf.env[option] != ())
432 Build.BuildContext.CONFIG_SET = CONFIG_SET
435 def library_flags(conf, libs):
436 '''work out flags from pkg_config'''
439 for lib in TO_LIST(libs):
441 inc_path = getattr(conf.env, 'CPPPATH_%s' % lib.upper(), [])
442 lib_path = getattr(conf.env, 'LIBPATH_%s' % lib.upper(), [])
444 ccflags.append('-I%s' % i)
446 ldflags.append('-L%s' % l)
447 return (ccflags, ldflags)
451 def CHECK_LIB(conf, libs, mandatory=False, empty_decl=True):
452 '''check if a set of libraries exist'''
454 liblist = TO_LIST(libs)
456 for lib in liblist[:]:
457 if GET_TARGET_TYPE(conf, lib) == 'SYSLIB':
460 (ccflags, ldflags) = library_flags(conf, lib)
462 if not conf.check(lib=lib, uselib_store=lib, ccflags=ccflags, ldflags=ldflags):
464 Logs.error("Mandatory library '%s' not found for functions '%s'" % (lib, list))
467 # if it isn't a mandatory library, then remove it from dependency lists
468 SET_TARGET_TYPE(conf, lib, 'EMPTY')
471 conf.define('HAVE_LIB%s' % lib.upper().replace('-','_'), 1)
472 conf.env['LIB_' + lib.upper()] = lib
473 LOCAL_CACHE_SET(conf, 'TARGET_TYPE', lib, 'SYSLIB')
480 def CHECK_FUNCS_IN(conf, list, library, mandatory=False, checklibc=False,
481 headers=None, link=True, empty_decl=True):
483 check that the functions in 'list' are available in 'library'
484 if they are, then make that library available as a dependency
486 if the library is not available and mandatory==True, then
489 If the library is not available and mandatory==False, then
490 add the library to the list of dependencies to remove from
493 optionally check for the functions first in libc
495 remaining = TO_LIST(list)
496 liblist = TO_LIST(library)
498 # check if some already found
499 for f in remaining[:]:
500 if CONFIG_SET(conf, 'HAVE_%s' % f.upper()):
503 # see if the functions are in libc
505 for f in remaining[:]:
506 if CHECK_FUNC(conf, f, link=True, headers=headers):
511 if GET_TARGET_TYPE(conf, lib) != 'SYSLIB' and empty_decl:
512 SET_TARGET_TYPE(conf, lib, 'EMPTY')
515 conf.CHECK_LIB(liblist, empty_decl=empty_decl)
516 for lib in liblist[:]:
517 if not GET_TARGET_TYPE(conf, lib) == 'SYSLIB':
519 Logs.error("Mandatory library '%s' not found for functions '%s'" % (lib, list))
521 # if it isn't a mandatory library, then remove it from dependency lists
527 if not CHECK_FUNC(conf, f, lib=' '.join(liblist), headers=headers, link=link):
534 def IN_LAUNCH_DIR(conf):
535 '''return True if this rule is being run from the launch directory'''
536 return os.path.realpath(conf.curdir) == os.path.realpath(Options.launch_dir)
540 def SAMBA_CONFIG_H(conf, path=None):
541 '''write out config.h in the right directory'''
542 # we don't want to produce a config.h in places like lib/replace
543 # when we are building projects that depend on lib/replace
544 if not IN_LAUNCH_DIR(conf):
547 if Options.options.developer:
548 # we add these here to ensure that -Wstrict-prototypes is not set during configure
549 conf.ADD_CFLAGS('-Wall -g -Wshadow -Wstrict-prototypes -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings -Werror-implicit-function-declaration -Wformat=2 -Wno-format-y2k',
552 if Options.options.picky_developer:
553 conf.ADD_CFLAGS('-Werror', testflags=True)
555 if Options.options.fatal_errors:
556 conf.ADD_CFLAGS('-Wfatal-errors', testflags=True)
558 if Options.options.pedantic:
559 conf.ADD_CFLAGS('-W', testflags=True)
562 conf.write_config_header('config.h', top=True)
564 conf.write_config_header(path)
568 def CONFIG_PATH(conf, name, default):
569 '''setup a configurable path'''
570 if not name in conf.env:
571 if default[0] == '/':
572 conf.env[name] = default
574 conf.env[name] = conf.env['PREFIX'] + default
577 def ADD_CFLAGS(conf, flags, testflags=False):
578 '''add some CFLAGS to the command line
579 optionally set testflags to ensure all the flags work
583 for f in flags.split():
584 if CHECK_CFLAGS(conf, f):
587 if not 'EXTRA_CFLAGS' in conf.env:
588 conf.env['EXTRA_CFLAGS'] = []
589 conf.env['EXTRA_CFLAGS'].extend(TO_LIST(flags))
594 def ADD_EXTRA_INCLUDES(conf, includes):
595 '''add some extra include directories to all builds'''
596 if not 'EXTRA_INCLUDES' in conf.env:
597 conf.env['EXTRA_INCLUDES'] = []
598 conf.env['EXTRA_INCLUDES'].extend(TO_LIST(includes))
602 def CURRENT_CFLAGS(bld, target, cflags):
603 '''work out the current flags. local flags are added first'''
604 if not 'EXTRA_CFLAGS' in bld.env:
607 list = bld.env['EXTRA_CFLAGS'];
608 ret = TO_LIST(cflags)
614 def CHECK_CC_ENV(conf):
615 """trim whitespaces from 'CC'.
616 The build farm sometimes puts a space at the start"""
617 if os.environ.get('CC'):
618 conf.env.CC = TO_LIST(os.environ.get('CC'))
619 if len(conf.env.CC) == 1:
620 # make for nicer logs if just a single command
621 conf.env.CC = conf.env.CC[0]
625 def SETUP_CONFIGURE_CACHE(conf, enable):
626 '''enable/disable cache of configure results'''
628 # when -C is chosen, we will use a private cache and will
629 # not look into system includes. This roughtly matches what
630 # autoconf does with -C
631 cache_path = os.path.join(conf.blddir, '.confcache')
633 Options.cache_global = os.environ['WAFCACHE'] = cache_path
635 # when -C is not chosen we will not cache configure checks
636 # We set the recursion limit low to prevent waf from spending
637 # a lot of time on the signatures of the files.
638 Options.cache_global = os.environ['WAFCACHE'] = ''
639 preproc.recursion_limit = 1
640 # in either case we don't need to scan system includes
641 preproc.go_absolute = False