summaryrefslogtreecommitdiff
path: root/lib/replace/wscript
blob: aa69c47316651bcdc9728ecbbfce6bc0cf5ddb23 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
#!/usr/bin/env python

APPNAME = 'libreplace'
VERSION = '1.2.1'

blddir = 'bin'

import sys, os, Utils

# find the buildtools directory
srcdir = '.'
while not os.path.exists(srcdir+'/buildtools') and len(srcdir.split('/')) < 5:
    srcdir = '../' + srcdir
sys.path.insert(0, srcdir + '/buildtools/wafsamba')

import wafsamba, samba_dist
import Options, os, preproc

samba_dist.DIST_DIRS('lib/replace buildtools:buildtools')

def set_options(opt):
    opt.BUILTIN_DEFAULT('NONE')
    opt.PRIVATE_EXTENSION_DEFAULT('')
    opt.RECURSE('buildtools/wafsamba')

@wafsamba.runonce
def configure(conf):
    conf.RECURSE('buildtools/wafsamba')

    conf.env.standalone_replace = conf.IN_LAUNCH_DIR()

    conf.DEFINE('HAVE_LIBREPLACE', 1)
    conf.DEFINE('LIBREPLACE_NETWORK_CHECKS', 1)

    # on Tru64 certain features are only available with _OSF_SOURCE set to 1
    # and _XOPEN_SOURCE set to 600
    if conf.env['SYSTEM_UNAME_SYSNAME'] == 'OSF1':
        conf.DEFINE('_OSF_SOURCE', 1, add_to_cflags=True)
        conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)

    conf.CHECK_HEADERS('linux/types.h crypt.h locale.h acl/libacl.h compat.h')
    conf.CHECK_HEADERS('acl/libacl.h attr/xattr.h compat.h ctype.h dustat.h')
    conf.CHECK_HEADERS('fcntl.h fnmatch.h glob.h history.h krb5.h langinfo.h')
    conf.CHECK_HEADERS('libaio.h locale.h ndir.h pwd.h')
    conf.CHECK_HEADERS('shadow.h sys/acl.h')
    conf.CHECK_HEADERS('sys/attributes.h sys/capability.h sys/dir.h sys/epoll.h')
    conf.CHECK_HEADERS('sys/fcntl.h sys/filio.h sys/filsys.h sys/fs/s5param.h sys/fs/vx/quota.h')
    conf.CHECK_HEADERS('sys/id.h sys/ioctl.h sys/ipc.h sys/mman.h sys/mode.h sys/ndir.h sys/priv.h')
    conf.CHECK_HEADERS('sys/resource.h sys/security.h sys/shm.h sys/statfs.h sys/statvfs.h sys/termio.h')
    conf.CHECK_HEADERS('sys/vfs.h sys/xattr.h termio.h termios.h sys/file.h')
    conf.CHECK_HEADERS('sys/wait.h sys/stat.h malloc.h grp.h')
    conf.CHECK_HEADERS('sys/select.h setjmp.h utime.h sys/syslog.h syslog.h')
    conf.CHECK_HEADERS('stdarg.h vararg.h sys/mount.h mntent.h')
    conf.CHECK_HEADERS('stropts.h unix.h string.h strings.h sys/param.h limits.h')
    conf.CHECK_HEADERS('''sys/socket.h netinet/in.h netdb.h arpa/inet.h netinet/in_systm.h
                          netinet/ip.h netinet/tcp.h netinet/in_ip.h
                          sys/sockio.h sys/un.h''', together=True)
    conf.CHECK_HEADERS('sys/uio.h ifaddrs.h direct.h dirent.h')
    conf.CHECK_HEADERS('windows.h winsock2.h ws2tcpip.h')
    conf.CHECK_HEADERS('libintl.h errno.h')
    conf.CHECK_HEADERS('gcrypt.h getopt.h iconv.h')
    conf.CHECK_HEADERS('sys/inotify.h memory.h nss.h sasl/sasl.h')
    conf.CHECK_HEADERS('security/pam_appl.h sys/inotify.h zlib.h asm/unistd.h')
    conf.CHECK_HEADERS('aio.h sys/unistd.h rpc/rpc.h rpc/nettype.h alloca.h float.h')

    conf.CHECK_HEADERS('rpcsvc/nis.h rpcsvc/ypclnt.h sys/prctl.h sys/sysctl.h')
    conf.CHECK_HEADERS('sys/fileio.h sys/filesys.h sys/dustat.h sys/sysmacros.h')
    conf.CHECK_HEADERS('xfs/libxfs.h netgroup.h rpcsvc/yp_prot.h')
    conf.CHECK_HEADERS('valgrind.h valgrind/valgrind.h valgrind/memcheck.h')
    conf.CHECK_HEADERS('nss_common.h nsswitch.h ns_api.h')
    conf.CHECK_HEADERS('sys/extattr.h sys/ea.h sys/proplist.h sys/cdefs.h')
    conf.CHECK_HEADERS('utmp.h utmpx.h lastlog.h malloc.h')
    conf.CHECK_HEADERS('syscall.h sys/syscall.h inttypes.h')

    conf.CHECK_TYPES('"long long" intptr_t uintptr_t ptrdiff_t comparison_fn_t')
    conf.CHECK_TYPE('_Bool', define='HAVE__Bool')
    conf.CHECK_TYPE('bool', define='HAVE_BOOL')

    conf.CHECK_TYPE('int8_t', 'char')
    conf.CHECK_TYPE('uint8_t', 'unsigned char')
    conf.CHECK_TYPE('int16_t', 'short')
    conf.CHECK_TYPE('uint16_t', 'unsigned short')
    conf.CHECK_TYPE('int32_t', 'int')
    conf.CHECK_TYPE('uint32_t', 'unsigned')
    conf.CHECK_TYPE('int64_t', 'long long')
    conf.CHECK_TYPE('uint64_t', 'unsigned long long')
    conf.CHECK_TYPE('size_t', 'unsigned int')
    conf.CHECK_TYPE('ssize_t', 'int')
    conf.CHECK_TYPE('ino_t', 'unsigned')
    conf.CHECK_TYPE('loff_t', 'off_t')
    conf.CHECK_TYPE('offset_t', 'loff_t')
    conf.CHECK_TYPE('volatile int', define='HAVE_VOLATILE')
    conf.CHECK_TYPE('uint_t', 'unsigned int')
    conf.CHECK_TYPE('blksize_t', 'long', headers='sys/types.h sys/stat.h unistd.h')
    conf.CHECK_TYPE('blkcnt_t', 'long', headers='sys/types.h sys/stat.h unistd.h')

    conf.CHECK_SIZEOF('bool char int "long long" long short size_t ssize_t')
    conf.CHECK_SIZEOF('int8_t uint8_t int16_t uint16_t int32_t uint32_t int64_t uint64_t')
    conf.CHECK_SIZEOF('void*', define='SIZEOF_VOID_P')
    conf.CHECK_SIZEOF('off_t dev_t ino_t time_t')

    conf.CHECK_TYPES('socklen_t', headers='sys/socket.h')
    conf.CHECK_TYPE_IN('struct ifaddrs', 'ifaddrs.h')
    conf.CHECK_TYPE_IN('struct addrinfo', 'netdb.h')
    conf.CHECK_TYPE_IN('struct sockaddr', 'sys/socket.h')
    conf.CHECK_CODE('struct sockaddr_in6 x', define='HAVE_STRUCT_SOCKADDR_IN6',
                    headers='sys/socket.h netdb.h netinet/in.h')
    conf.CHECK_TYPE_IN('struct sockaddr_storage', 'sys/socket.h')
    conf.CHECK_TYPE_IN('sa_family_t', 'sys/socket.h')

    conf.CHECK_TYPE_IN('sig_atomic_t', 'signal.h', define='HAVE_SIG_ATOMIC_T_TYPE')

    conf.CHECK_FUNCS_IN('''inet_ntoa inet_aton inet_ntop inet_pton connect gethostbyname
                           getaddrinfo getnameinfo freeaddrinfo gai_strerror socketpair''',
                        'socket nsl', checklibc=True,
                        headers='sys/socket.h netinet/in.h arpa/inet.h netdb.h')

    # Some old Linux systems have broken header files and
    # miss the IPV6_V6ONLY define in netinet/in.h,
    # but have it in linux/in6.h.
    # We can't include both files so we just check if the value
    # if defined and do the replacement in system/network.h
    if not conf.CHECK_VARIABLE('IPV6_V6ONLY',
                               headers='sys/socket.h netdb.h netinet/in.h'):
        conf.CHECK_CODE('''
                        #include <linux/in6.h>
                        #if (IPV6_V6ONLY != 26)
                        #error no IPV6_V6ONLY support on linux
                        #endif
                        int main(void) { return IPV6_V6ONLY; }
                        ''',
                        define='HAVE_LINUX_IPV6_V6ONLY_26',
                        addmain=False,
                        msg='Checking for IPV6_V6ONLY in linux/in6.h',
                        local_include=False)

    conf.CHECK_CODE('''
                       struct sockaddr_storage sa_store;
                       struct addrinfo *ai = NULL;
                       struct in6_addr in6addr;
                       int idx = if_nametoindex("iface1");
                       int s = socket(AF_INET6, SOCK_STREAM, 0);
                       int ret = getaddrinfo(NULL, NULL, NULL, &ai);
                       if (ret != 0) {
                           const char *es = gai_strerror(ret);
                       }
                       freeaddrinfo(ai);
                       {
                          int val = 1;
                          #ifdef HAVE_LINUX_IPV6_V6ONLY_26
                          #define IPV6_V6ONLY 26
                          #endif
                          ret = setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
                                           (const void *)&val, sizeof(val));
                       }
                       ''',
                    define='HAVE_IPV6',
                    lib='nsl socket',
                    headers='sys/socket.h netdb.h netinet/in.h')

    # these may be builtins, so we need the link=False strategy
    conf.CHECK_FUNCS('strdup memmem printf memset memcpy memmove strcpy strncpy bzero', link=False)

    conf.CHECK_FUNCS('shl_load shl_unload shl_findsym')
    conf.CHECK_FUNCS('pipe strftime srandom random srand rand usleep setbuffer')
    conf.CHECK_FUNCS('lstat getpgrp utime utimes seteuid setreuid setresuid setegid')
    conf.CHECK_FUNCS('setregid setresgid chroot strerror vsyslog setlinebuf mktime')
    conf.CHECK_FUNCS('ftruncate chsize rename waitpid wait4')
    conf.CHECK_FUNCS('initgroups pread pwrite strndup strcasestr')
    conf.CHECK_FUNCS('strtok_r mkdtemp dup2 dprintf vdprintf isatty chown lchown')
    conf.CHECK_FUNCS('link readlink symlink realpath snprintf vsnprintf')
    conf.CHECK_FUNCS('asprintf vasprintf setenv unsetenv strnlen strtoull __strtoull')
    conf.CHECK_FUNCS('strtouq strtoll __strtoll strtoq memalign posix_memalign')

    # libbsd on some platforms provides strlcpy and strlcat
    if not conf.CHECK_FUNCS('strlcpy strlcat'):
        conf.CHECK_FUNCS_IN('strlcpy strlcat', 'bsd', headers='bsd/string.h',
                checklibc=True)
    if not conf.CHECK_FUNCS('getpeereid'):
        conf.CHECK_FUNCS_IN('getpeereid', 'bsd', headers='sys/types.h bsd/unistd.h')

    conf.CHECK_CODE('''
                struct ucred cred;
                socklen_t cred_len;
                int ret = getsockopt(0, SOL_SOCKET, SO_PEERCRED, &cred, &cred_len);''',
                'HAVE_PEERCRED',
                msg="Checking whether we can use SO_PEERCRED to get socket credentials",
                headers='sys/types.h sys/socket.h')

    #Some OS (ie. freebsd) return EINVAL if the convertion could not be done, it's not what we expect
    #Let's detect those cases
    if conf.CONFIG_SET('HAVE_STRTOLL'):
        conf.CHECK_CODE('''
                        long long nb = strtoll("Text", NULL, 0);
                        if (errno == EINVAL) {
                            return 0;
                        } else {
                            return 1;
                        }
                        ''',
                        msg="Checking correct behavior of strtoll",
                        headers = 'errno.h',
                        execute = True,
                        define_ret = True,
                        define = 'HAVE_BSD_STRTOLL',
                        )
    conf.CHECK_FUNCS('if_nametoindex strerror_r')
    conf.CHECK_FUNCS('getdirentries getdents syslog')
    conf.CHECK_FUNCS('gai_strerror get_current_dir_name')
    conf.CHECK_FUNCS('timegm getifaddrs freeifaddrs mmap setgroups setsid')
    conf.CHECK_FUNCS('getgrent_r getgrgid_r getgrnam_r getgrouplist getpagesize')
    conf.CHECK_FUNCS('getpwent_r getpwnam_r getpwuid_r epoll_create')

    conf.SET_TARGET_TYPE('attr', 'EMPTY')

    xattr_headers='sys/attributes.h attr/xattr.h sys/xattr.h'

    conf.CHECK_FUNCS_IN('''
fgetxattr flistea flistxattr
fremovexattr fsetxattr getxattr
listxattr removexattr setxattr
''', 'attr', checklibc=True, headers=xattr_headers)

    # We need to check for linux xattrs first, as we do not wish to link to -lattr
    # (the XFS compat API) on Linux systems with the native xattr API
    if not conf.CONFIG_SET('HAVE_GETXATTR'):
        conf.CHECK_FUNCS_IN('''
attr_get attr_getf attr_list attr_listf attropen attr_remove
attr_removef attr_set attr_setf extattr_delete_fd extattr_delete_file
extattr_get_fd extattr_get_file extattr_list_fd extattr_list_file
extattr_set_fd extattr_set_file fgetea flistea
fremoveea fsetea getea listea
removeea setea
''', 'attr', checklibc=True, headers=xattr_headers)

    if (conf.CONFIG_SET('HAVE_ATTR_LISTF') or
        conf.CONFIG_SET('HAVE_EXTATTR_LIST_FD') or
        conf.CONFIG_SET('HAVE_FLISTEA') or
        conf.CONFIG_SET('HAVE_FLISTXATTR')):
            conf.DEFINE('HAVE_XATTR_SUPPORT', 1)

    # Darwin has extra options to xattr-family functions
    conf.CHECK_CODE('getxattr(NULL, NULL, NULL, 0, 0, 0)',
                    headers=xattr_headers, local_include=False,
                    define='XATTR_ADDITIONAL_OPTIONS',
                    msg="Checking whether xattr interface takes additional options")

    conf.CHECK_FUNCS_IN('dlopen dlsym dlerror dlclose', 'dl',
                        checklibc=True, headers='dlfcn.h dl.h')

    conf.CHECK_C_PROTOTYPE('dlopen', 'void *dlopen(const char* filename, unsigned int flags)',
                           define='DLOPEN_TAKES_UNSIGNED_FLAGS', headers='dlfcn.h dl.h')

    if conf.CHECK_FUNCS_IN('fdatasync', 'rt', checklibc=True):
        # some systems are missing the declaration
        conf.CHECK_DECLS('fdatasync')

    if conf.CHECK_FUNCS_IN('clock_gettime', 'rt', checklibc=True):
        for c in ['CLOCK_MONOTONIC', 'CLOCK_PROCESS_CPUTIME_ID', 'CLOCK_REALTIME']:
            conf.CHECK_CODE('''
                #if TIME_WITH_SYS_TIME
                # include <sys/time.h>
                # include <time.h>
                #else
                # if HAVE_SYS_TIME_H
                #  include <sys/time.h>
                # else
                #  include <time.h>
                # endif
                #endif
                clockid_t clk = %s''' % c,
                'HAVE_%s' % c,
                msg='Checking whether the clock_gettime clock ID %s is available' % c)

    conf.CHECK_TYPE('struct timespec', headers='sys/time.h time.h')

    # these headers need to be tested as a group on freebsd
    conf.CHECK_HEADERS(headers='sys/socket.h net/if.h', together=True)
    conf.CHECK_HEADERS(headers='netinet/in.h arpa/nameser.h resolv.h', together=True)
    conf.CHECK_FUNCS_IN('res_search', 'resolv', checklibc=True,
                        headers='netinet/in.h arpa/nameser.h resolv.h')


    if not conf.CHECK_FUNCS_IN('gettext', 'intl', checklibc=True, headers='libintl.h'):
    # Some hosts need lib iconv for linking with lib intl
    # So we try with flags just in case it helps.
        oldflags = conf.env['LDFLAGS_INTL']
        conf.env['LDFLAGS_INTL'] = "-liconv"
        if not conf.CHECK_LIB('intl'):
            conf.env['LDFLAGS_INTL'] = oldflags
        else:
            conf.CHECK_FUNCS_IN('gettext', 'intl', checklibc=True, headers='libintl.h')

    conf.CHECK_FUNCS_IN('dgettext gettext', 'intl', headers='libintl.h')
    conf.CHECK_FUNCS_IN('pthread_create', 'pthread', checklibc=True, headers='pthread.h')

    conf.CHECK_FUNCS_IN('crypt', 'crypt', checklibc=True)

    conf.CHECK_VARIABLE('rl_event_hook', define='HAVE_DECL_RL_EVENT_HOOK', always=True,
                        headers='readline.h readline/readline.h readline/history.h')

    conf.CHECK_DECLS('snprintf vsnprintf asprintf vasprintf')

    conf.CHECK_DECLS('errno', headers='errno.h', reverse=True)
    conf.CHECK_DECLS('environ getgrent_r getpwent_r', reverse=True, headers='pwd.h grp.h')
    conf.CHECK_DECLS('pread pwrite setenv setresgid setresuid', reverse=True)

    if conf.CONFIG_SET('HAVE_EPOLL_CREATE') and conf.CONFIG_SET('HAVE_SYS_EPOLL_H'):
        conf.DEFINE('HAVE_EPOLL', 1)

    conf.CHECK_HEADERS('poll.h')
    conf.CHECK_FUNCS('poll')

    if not conf.CHECK_CODE('''#define LIBREPLACE_CONFIGURE_TEST_STRPTIME
                           #include "test/strptime.c"''',
                           define='HAVE_STRPTIME',
                           addmain=False,
                           msg='Checking for working strptime'):
        conf.DEFINE('REPLACE_STRPTIME', 1)

    conf.CHECK_CODE('gettimeofday(NULL, NULL)', 'HAVE_GETTIMEOFDAY_TZ', execute=False)

    conf.CHECK_CODE('#include "test/snprintf.c"',
                    define="HAVE_C99_VSNPRINTF",
                    execute=True,
                    addmain=False,
                    msg="Checking for C99 vsnprintf")

    conf.CHECK_CODE('#include "test/shared_mmap.c"',
                    addmain=False, add_headers=False, execute=True,
                    define='HAVE_SHARED_MMAP',
                    msg="Checking for HAVE_SHARED_MMAP")

    conf.CHECK_CODE('#include "test/shared_mremap.c"',
                    addmain=False, add_headers=False, execute=True,
                    define='HAVE_MREMAP',
                    msg="Checking for HAVE_MREMAP")

    # OpenBSD (and I've heard HPUX) doesn't sync between mmap and write.
    # FIXME: Anything other than a 0 or 1 exit code should abort configure!
    conf.CHECK_CODE('#include "test/incoherent_mmap.c"',
                    addmain=False, add_headers=False, execute=True,
                    define='HAVE_INCOHERENT_MMAP',
                    msg="Checking for HAVE_INCOHERENT_MMAP")

    conf.SAMBA_BUILD_ENV()

    conf.CHECK_CODE('''
                    typedef struct {unsigned x;} FOOBAR;
                    #define X_FOOBAR(x) ((FOOBAR) { x })
                    #define FOO_ONE X_FOOBAR(1)
                    FOOBAR f = FOO_ONE;
                    static const struct {
                        FOOBAR y;
                    } f2[] = {
                        {FOO_ONE}
                    };
                    static const FOOBAR f3[] = {FOO_ONE};
                    ''',
                    define='HAVE_IMMEDIATE_STRUCTURES')

    conf.CHECK_CODE('mkdir("foo",0777)', define='HAVE_MKDIR_MODE', headers='sys/stat.h')

    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_mtim.tv_nsec', define='HAVE_STAT_TV_NSEC',
                                headers='sys/stat.h')
    # we need the st_rdev test under two names
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_rdev',
                                define='HAVE_STRUCT_STAT_ST_RDEV',
                                headers='sys/stat.h')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_rdev', define='HAVE_ST_RDEV',
                                headers='sys/stat.h')
    conf.CHECK_STRUCTURE_MEMBER('struct sockaddr_storage', 'ss_family',
                                headers='sys/socket.h netinet/in.h')
    conf.CHECK_STRUCTURE_MEMBER('struct sockaddr_storage', '__ss_family',
                                headers='sys/socket.h netinet/in.h')


    if conf.CHECK_STRUCTURE_MEMBER('struct sockaddr', 'sa_len',
                                   headers='sys/socket.h netinet/in.h',
                                   define='HAVE_SOCKADDR_SA_LEN'):
        # the old build system produced both defines
        conf.DEFINE('HAVE_STRUCT_SOCKADDR_SA_LEN', 1)

    conf.CHECK_STRUCTURE_MEMBER('struct sockaddr_in', 'sin_len',
                                headers='sys/socket.h netinet/in.h',
                                define='HAVE_SOCK_SIN_LEN')

    conf.CHECK_CODE('struct sockaddr_un sunaddr; sunaddr.sun_family = AF_UNIX;',
                    define='HAVE_UNIXSOCKET', headers='sys/socket.h sys/un.h')


    conf.CHECK_CODE('''
                    struct stat st;
                    char tpl[20]="/tmp/test.XXXXXX";
                    int fd = mkstemp(tpl);
                    if (fd == -1) exit(1);
                    unlink(tpl);
                    if (fstat(fd, &st) != 0) exit(1);
                    if ((st.st_mode & 0777) != 0600) exit(1);
                    exit(0);
                    ''',
                    define='HAVE_SECURE_MKSTEMP',
                    execute=True,
                    mandatory=True) # lets see if we get a mandatory failure for this one

    if conf.CHECK_CFLAGS('-fvisibility=hidden'):
        conf.env.VISIBILITY_CFLAGS = '-fvisibility=hidden'
        conf.CHECK_CODE('''void vis_foo1(void) {}
                           __attribute__((visibility("default"))) void vis_foo2(void) {}''',
                        cflags=conf.env.VISIBILITY_CFLAGS,
                        define='HAVE_VISIBILITY_ATTR')

    # look for a method of finding the list of network interfaces
    for method in ['HAVE_IFACE_GETIFADDRS', 'HAVE_IFACE_AIX', 'HAVE_IFACE_IFCONF', 'HAVE_IFACE_IFREQ']:
        if conf.CHECK_CODE('''
                           #define %s 1
                           #define NO_CONFIG_H 1
                           #define AUTOCONF_TEST 1
                           #define SOCKET_WRAPPER_NOT_REPLACE
                           #include "replace.c"
                           #include "inet_ntop.c"
                           #include "snprintf.c"
                           #include "getifaddrs.c"
                           #define getifaddrs_test main
                           #include "test/getifaddrs.c"
                           ''' % method,
                           method,
                           lib='nsl socket',
                           addmain=False,
                           execute=True):
            break

    if conf.CHECK_FUNCS('getpass getpassphrase'):
        # if we have both, then we prefer getpassphrase
        conf.DEFINE('REPLACE_GETPASS_BY_GETPASSPHRASE', 1)
        conf.DEFINE('REPLACE_GETPASS', 1)
    else:
        conf.CHECK_CODE('''#include "getpass.c"
                       int main(void) { return 0; }''',
                    addmain=False,
                    define='REPLACE_GETPASS',
                    cflags='-DNO_CONFIG_H')

    conf.RECURSE('system')
    conf.SAMBA_CONFIG_H()


REPLACEMENT_FUNCTIONS = {
    'replace.c': ['ftruncate', 'strlcpy', 'strlcat', 'mktime', 'initgroups',
                  'memmove', 'strdup', 'setlinebuf', 'vsyslog', 'strnlen',
                  'strndup', 'waitpid', 'seteuid', 'setegid', 'chroot',
                  'mkstemp', 'mkdtemp', 'pread', 'pwrite', 'strcasestr',
                  'strtok_r', 'strtoll', 'strtoull', 'setenv', 'unsetenv',
                  'utime', 'utimes', 'dup2', 'chown', 'link', 'readlink',
                  'symlink', 'lchown', 'realpath', 'memmem', 'vdprintf',
                  'dprintf', 'get_current_dir_name',
                  'strerror_r', 'clock_gettime'],
    'timegm.c': ['timegm'],
    # Note: C99_VSNPRINTF is not a function, but a special condition
    # for replacement
    'snprintf.c': ['C99_VSNPRINTF', 'snprintf', 'vsnprintf', 'asprintf', 'vasprintf'],
    }


def build(bld):
    bld.RECURSE('buildtools/wafsamba')

    REPLACE_HOSTCC_SOURCE = ''

    if bld.CONFIG_SET('REPLACE_STRPTIME'):       REPLACE_HOSTCC_SOURCE += ' strptime.c'
    for filename, functions in REPLACEMENT_FUNCTIONS.iteritems():
        for function in functions:
            if not bld.CONFIG_SET('HAVE_%s' % function.upper()):
                REPLACE_HOSTCC_SOURCE += ' %s' % filename
                break

    extra_libs = ''
    if bld.CONFIG_SET('HAVE_LIBBSD'): extra_libs += ' bsd'

    bld.SAMBA_SUBSYSTEM('LIBREPLACE_HOSTCC',
        REPLACE_HOSTCC_SOURCE,
        use_hostcc=True,
        use_global_deps=False,
        cflags='-DSOCKET_WRAPPER_DISABLE=1 -DNSS_WRAPPER_DISABLE=1 -DUID_WRAPPER_DISABLE=1 -D_SAMBA_HOSTCC_',
        group='compiler_libraries',
        deps = extra_libs
    )

    REPLACE_SOURCE = REPLACE_HOSTCC_SOURCE

    if bld.CONFIG_SET('REPLACE_GETPASS'):        REPLACE_SOURCE += ' getpass.c'
    if not bld.CONFIG_SET('HAVE_CRYPT'):         REPLACE_SOURCE += ' crypt.c'
    if not bld.CONFIG_SET('HAVE_DLOPEN'):        REPLACE_SOURCE += ' dlfcn.c'
    if not bld.CONFIG_SET('HAVE_POLL'):          REPLACE_SOURCE += ' poll.c'

    if not bld.CONFIG_SET('HAVE_SOCKETPAIR'):    REPLACE_SOURCE += ' socketpair.c'
    if not bld.CONFIG_SET('HAVE_CONNECT'):       REPLACE_SOURCE += ' socket.c'
    if not bld.CONFIG_SET('HAVE_GETIFADDRS'):    REPLACE_SOURCE += ' getifaddrs.c'
    if not bld.CONFIG_SET('HAVE_GETADDRINFO'):   REPLACE_SOURCE += ' getaddrinfo.c'
    if not bld.CONFIG_SET('HAVE_INET_NTOA'):     REPLACE_SOURCE += ' inet_ntoa.c'
    if not bld.CONFIG_SET('HAVE_INET_ATON'):     REPLACE_SOURCE += ' inet_aton.c'
    if not bld.CONFIG_SET('HAVE_INET_NTOP'):     REPLACE_SOURCE += ' inet_ntop.c'
    if not bld.CONFIG_SET('HAVE_INET_PTON'):     REPLACE_SOURCE += ' inet_pton.c'
    if not bld.CONFIG_SET('HAVE_GETXATTR') or bld.CONFIG_SET('XATTR_ADDITIONAL_OPTIONS'):
                                                 REPLACE_SOURCE += ' xattr.c'

    bld.SAMBA_LIBRARY('replace',
                      source=REPLACE_SOURCE,
                      group='base_libraries',
                      # FIXME: Ideally symbols should be hidden here so they 
                      # don't appear in the global namespace when Samba 
                      # libraries are loaded, but this doesn't appear to work 
                      # at the moment:
                      # hide_symbols=bld.BUILTIN_LIBRARY('replace'),
                      private_library=True,
                      deps='crypt dl nsl socket rt attr' + extra_libs)

    bld.SAMBA_SUBSYSTEM('replace-test',
                      source='''test/testsuite.c test/strptime.c
                      test/os2_delete.c test/getifaddrs.c''',
                      deps='replace')

    if bld.env.standalone_replace:
        bld.SAMBA_BINARY('replace_testsuite',
                         source='test/main.c',
                         deps='replace replace-test',
                         install=False)

    # build replacements for stdint.h and stdbool.h if needed
    bld.SAMBA_GENERATOR('replace_stdint_h',
                        rule='cp ${SRC} ${TGT}',
                        source='hdr_replace.h',
                        target='stdint.h',
                        enabled = not bld.CONFIG_SET('HAVE_STDINT_H'))
    bld.SAMBA_GENERATOR('replace_stdbool_h',
                        rule='cp ${SRC} ${TGT}',
                        source='hdr_replace.h',
                        target='stdbool.h',
                        enabled = not bld.CONFIG_SET('HAVE_STDBOOL_H'))

def dist():
    '''makes a tarball for distribution'''
    samba_dist.dist()