When the QNX build farm machine tries to build the master version of samba, it fails to link bin/winbind_krb5_locator.so because there are undefined references to talloc functions:

Linking bin/winbind_krb5_locator.so
bin/libwbclient.a(wbclient.o): In function `wbcLibraryDetails':
wbclient.c:(.text+0xbc): undefined reference to `talloc_named_const'
wbclient.c:(.text+0xe0): undefined reference to `talloc_strdup'
wbclient.c:(.text+0x110): undefined reference to `_talloc_free'
bin/libwbclient.a(wbclient.o): In function `wbcFreeMemory':
wbclient.c:(.text+0x144): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_util.o): In function `wbcAddNamedBlob':
wbc_util.c:(.text+0x2d): undefined reference to `_talloc_realloc_array'
wbc_util.c:(.text+0x42): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x5f): undefined reference to `_talloc_memdup'
bin/libwbclient.a(wbc_util.o): In function `wbcResolveWinsByIP':
wbc_util.c:(.text+0x130): undefined reference to `talloc_strdup'
bin/libwbclient.a(wbc_util.o): In function `wbcResolveWinsByName':
wbc_util.c:(.text+0x1c8): undefined reference to `talloc_strdup'
bin/libwbclient.a(wbc_util.o): In function `wbcLookupDomainControllerEx':
wbc_util.c:(.text+0x359): undefined reference to `talloc_named_const'
wbc_util.c:(.text+0x37f): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x3a2): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x3ef): undefined reference to `talloc_named_const'
wbc_util.c:(.text+0x434): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x461): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x4ab): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x4e8): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x523): undefined reference to `_talloc_free'
wbc_util.c:(.text+0x53d): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_util.o): In function `wbcLookupDomainController':
wbc_util.c:(.text+0x5dd): undefined reference to `talloc_named_const'
wbc_util.c:(.text+0x617): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x648): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_util.o): In function `wbcDomainInfo':
wbc_util.c:(.text+0x6f8): undefined reference to `talloc_named_const'
wbc_util.c:(.text+0x715): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x72e): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x7a3): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_util.o): In function `wbcInterfaceDetails':
wbc_util.c:(.text+0x7fa): undefined reference to `talloc_named_const'
wbc_util.c:(.text+0x85f): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x8a6): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x8eb): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x92e): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0x975): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_util.o): In function `wbcListTrusts':
wbc_util.c:(.text+0xa24): undefined reference to `_talloc_array'
wbc_util.c:(.text+0xb46): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0xb86): undefined reference to `talloc_strdup'
wbc_util.c:(.text+0xe66): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcListGroups':
wbc_sid.c:(.text+0x18d): undefined reference to `_talloc_realloc_array'
wbc_sid.c:(.text+0x1b1): undefined reference to `talloc_strdup'
wbc_sid.c:(.text+0x23f): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcListUsers':
wbc_sid.c:(.text+0x367): undefined reference to `_talloc_realloc_array'
wbc_sid.c:(.text+0x38b): undefined reference to `talloc_strdup'
wbc_sid.c:(.text+0x419): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcSidToString':
wbc_sid.c:(.text+0x696): undefined reference to `talloc_asprintf'
wbc_sid.c:(.text+0x6c9): undefined reference to `talloc_asprintf_append'
wbc_sid.c:(.text+0x70a): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcGetSidAliases':
wbc_sid.c:(.text+0x7ed): undefined reference to `_talloc_array'
wbc_sid.c:(.text+0x8c4): undefined reference to `_talloc_realloc_array'
wbc_sid.c:(.text+0x995): undefined reference to `_talloc_array'
wbc_sid.c:(.text+0xad6): undefined reference to `_talloc_free'
wbc_sid.c:(.text+0xb03): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcLookupUserSids':
wbc_sid.c:(.text+0xc30): undefined reference to `_talloc_array'
wbc_sid.c:(.text+0xd1b): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcLookupRids':
wbc_sid.c:(.text+0xdf1): undefined reference to `_talloc_zero_array'
wbc_sid.c:(.text+0xeee): undefined reference to `_talloc_free'
wbc_sid.c:(.text+0xf0a): undefined reference to `talloc_strdup'
wbc_sid.c:(.text+0xf4a): undefined reference to `_talloc_array'
wbc_sid.c:(.text+0xf87): undefined reference to `_talloc_array'
wbc_sid.c:(.text+0x103c): undefined reference to `talloc_strdup'
wbc_sid.c:(.text+0x1113): undefined reference to `_talloc_free'
wbc_sid.c:(.text+0x1134): undefined reference to `_talloc_free'
wbc_sid.c:(.text+0x1155): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcLookupSid':
wbc_sid.c:(.text+0x1225): undefined reference to `talloc_strdup'
wbc_sid.c:(.text+0x124c): undefined reference to `talloc_strdup'
wbc_sid.c:(.text+0x1292): undefined reference to `_talloc_free'
wbc_sid.c:(.text+0x12b2): undefined reference to `_talloc_free'
wbc_sid.c:(.text+0x12e5): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_sid.o): In function `wbcGetDisplayName':
wbc_sid.c:(.text+0x1383): undefined reference to `talloc_strdup'
bin/libwbclient.a(wbc_guid.o): In function `wbcGuidToString':
wbc_guid.c:(.text+0x173): undefined reference to `talloc_asprintf'
bin/libwbclient.a(wbc_pwd.o): In function `wbcGetGroups':
wbc_pwd.c:(.text+0x22c): undefined reference to `_talloc_array'
wbc_pwd.c:(.text+0x29d): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_pwd.o): In function `copy_passwd_entry':
wbc_pwd.c:(.text+0x2d1): undefined reference to `talloc_named_const'
wbc_pwd.c:(.text+0x2e8): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x301): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x31b): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x335): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x34f): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x37d): undefined reference to `_talloc_free'
bin/libwbclient.a(wbc_pwd.o): In function `copy_group_entry':
wbc_pwd.c:(.text+0x5c7): undefined reference to `talloc_named_const'
wbc_pwd.c:(.text+0x5e1): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x603): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x63f): undefined reference to `_talloc_array'
wbc_pwd.c:(.text+0x69d): undefined reference to `talloc_strdup'
wbc_pwd.c:(.text+0x703): undefined reference to `_talloc_free'
collect2: ld returned 1 exit status