Unbound 1.9.3 released

Yuri yvoinov at gmail.com
Fri Sep 6 13:04:40 UTC 2019


Seems only libevent_pthread.pc contains this:

#libevent pkg-config source file

prefix=/usr/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include

Name: libevent_pthreads
Description: libevent_pthreads adds pthreads-based threading support to
libevent
Version: 2.1.11-stable
Requires: libevent
Conflicts:
Libs: -L${libdir} -levent_pthreads
Libs.private: -lsendfile -lrt -lsocket -lnsl 
Cflags: -I${includedir} -D_REENTRANT -pthreads


06.09.2019 19:00, Wouter Wijngaards via Unbound-users пишет:
> Hi,
>
> Already privately replied that it looks like libtool inserts extra link
> options. Specifically an extra -mt option, and with that a '-pthreads'
> option. That looks like it causes the problem.
>
> The suggestion I gave was to move away, temporarily the
> lib<something>.la file from /usr/lib or /usr/local/lib that contains
> that -pthreads flag that libtool appends to the commandline, likely in
> there because that library was compiled with gcc.
>
> Not sure why libtool appends the extra dependencies or options.
>
> Best regards, Wouter
>
> On 06/09/2019 14:43, Yuri via Unbound-users wrote:
>> 30.08.2019 13:52, Wouter Wijngaards via Unbound-users пишет:
>>> Hi Yuri,
>>>
>>> On 29/08/2019 09:43, Yuri via Unbound-users wrote:
>>>> Thank you, Jaco, but this not solves my problem.
>>>>
>>>> I have Solaris 10u13 with Oracle Developer Studio 12.6 on SPARC-IV+ (so,
>>>> incompatible with Solaris 11.x).
>>>>
>>>> 29.08.2019 13:29, Jaco Lesch via Unbound-users пишет:
>>>>> On 8/28/19 18:49, Yuri via Unbound-users wrote:
>>>>>> 28.08.2019 18:23, Wouter Wijngaards via Unbound-users пишет:
>>>>>>> Hi Yuri,
>>>>>>>
>>>>>>> On 27/08/2019 19:45, Yuri via Unbound-users wrote:
>>>>>>>> 27.08.2019 21:22, Yuri пишет:
>>>>>>>>> 27.08.2019 21:17, Wouter Wijngaards via Unbound-users пишет:
>>>>>>>>>> Hi Yuri,
>>>>>>>>>>
>>>>>>>>>> If that is any similar to yours, the ./configure --disable-shared
>>>>>>>>>> flag
>>>>>>>>>> could fix it.
>>>>>>>> Tried with same error:
>>>>>>> It looks like the flag makes the library build pass, but this link
>>>>>>> fails
>>>>>>> because of (what may also be the first error) unrecognised options.
>>>>>>>
>>>>>>> Can you give the full commandline that failed, and also a couple before
>>>>>>> it (the libtool invocation, and then the compiler and linker lines).
>>>>>>> The flags on it, we can try to change them to see which one is the
>>>>>>> problem.  Something that looks like -...h... is what I guess from the
>>>>>>> link you sent.
>>>>>> Failed all object and binaries link call. Which one?
>>> The commandline I need is just before the part that you copy and pasted,
>>> and I guess about 20 lines more would help me.   That probably also
>>> includes another commandline before it, or even a non-failure line, but
>>> that's not a problem.
>> libtool: compile:  /bin/cc -I. -I/opt/csw/include -I/opt/csw/include
>> -I/usr/local/include -I/opt/csw/include -DSRCDIR=. -xO4 -m64 -xlinkopt=2
>> -xc99 -mt -c libunbound/libworker.c -o libworker.o >/dev/null 2>&1
>> ./libtool --tag=CC --mode=compile /bin/cc -I. -I/opt/csw/include
>> -I/opt/csw/include -I/usr/local/include -I/opt/csw/include -DSRCDIR=.
>> -xO4 -m64 -xlinkopt=2 -xc99 -mt  -o ub_event_pluggable.lo -c
>> util/ub_event_pluggable.c
>> libtool: compile:  /bin/cc -I. -I/opt/csw/include -I/opt/csw/include
>> -I/usr/local/include -I/opt/csw/include -DSRCDIR=. -xO4 -m64 -xlinkopt=2
>> -xc99 -mt -c util/ub_event_pluggable.c  -KPIC -DPIC -o
>> .libs/ub_event_pluggable.o
>> "./util/log.h", line 75: warning:  attribute "format" is unknown, ignored
>> "./util/log.h", line 131: warning:  attribute "format" is unknown, ignored
>> "./util/log.h", line 138: warning:  attribute "format" is unknown, ignored
>> "./util/log.h", line 145: warning:  attribute "format" is unknown, ignored
>> "./util/log.h", line 161: warning:  attribute "format" is unknown, ignored
>> "./util/log.h", line 168: warning:  attribute "format" is unknown, ignored
>> "./util/log.h", line 184: warning:  attribute "format" is unknown, ignored
>> libtool: compile:  /bin/cc -I. -I/opt/csw/include -I/opt/csw/include
>> -I/usr/local/include -I/opt/csw/include -DSRCDIR=. -xO4 -m64 -xlinkopt=2
>> -xc99 -mt -c util/ub_event_pluggable.c -o ub_event_pluggable.o
>>> /dev/null 2>&1
>> ./libtool --tag=CC --mode=link /bin/cc -R/opt/csw/lib -R/usr/local/lib
>> -I. -I/opt/csw/include -I/opt/csw/include -I/usr/local/include
>> -I/opt/csw/include -DSRCDIR=. -xO4 -m64 -xlinkopt=2 -xc99 -mt -m64
>> -L/opt/csw/lib/64 -xlinkopt=2 -L/opt/csw/lib -L/usr/local/lib
>> -L/opt/csw/lib -version-info 9:3:1 -no-undefined -export-symbols
>> ./libunbound/ubsyms.def -o libunbound.la context.lo libunbound.lo
>> libworker.lo ub_event_pluggable.lo dns.lo infra.lo rrset.lo dname.lo
>> msgencode.lo as112.lo msgparse.lo msgreply.lo packed_rrset.lo
>> iterator.lo iter_delegpt.lo iter_donotq.lo iter_fwd.lo iter_hints.lo
>> iter_priv.lo iter_resptype.lo iter_scrub.lo iter_utils.lo localzone.lo
>> mesh.lo modstack.lo view.lo outbound_list.lo alloc.lo config_file.lo
>> configlexer.lo configparser.lo fptr_wlist.lo edns.lo locks.lo log.lo
>> mini_event.lo module.lo net_help.lo random.lo rbtree.lo regional.lo
>> rtt.lo dnstree.lo lookup3.lo lruhash.lo slabhash.lo tcp_conn_limit.lo
>> timehist.lo tube.lo winsock_event.lo autotrust.lo val_anchor.lo
>> validator.lo val_kcache.lo val_kentry.lo val_neg.lo val_nsec3.lo
>> val_nsec.lo val_secalgo.lo val_sigcrypt.lo val_utils.lo dns64.lo
>> cachedb.lo redis.lo authzone.lo        respip.lo netevent.lo
>> listen_dnsport.lo outside_network.lo keyraw.lo sbuffer.lo wire2str.lo
>> parse.lo parseutil.lo rrdef.lo str2wire.lo explicit_bzero.lo
>> reallocarray.lo arc4random.lo arc4random_uniform.lo arc4_lock.lo
>> getentropy_solaris.lo strsep.lo -rpath /usr/local/lib -lssl -lrt -levent
>> -lrt -lsocket -lnsl  -lcrypto -lmd
>> libtool: link: echo "{ global:" > .libs/libunbound.so.8.1.3.exp
>> libtool: link: cat ./libunbound/ubsyms.def | /opt/csw/gnu/sed -e
>> "s/\(.*\)/\1;/" >> .libs/libunbound.so.8.1.3.exp
>> libtool: link: echo "local: *; };" >> .libs/libunbound.so.8.1.3.exp
>> libtool: link:  /bin/cc -G -z defs -M .libs/libunbound.so.8.1.3.exp -h
>> libunbound.so.8 -o .libs/libunbound.so.8.1.3  .libs/context.o
>> .libs/libunbound.o .libs/libworker.o .libs/ub_event_pluggable.o
>> .libs/dns.o .libs/infra.o .libs/rrset.o .libs/dname.o .libs/msgencode.o
>> .libs/as112.o .libs/msgparse.o .libs/msgreply.o .libs/packed_rrset.o
>> .libs/iterator.o .libs/iter_delegpt.o .libs/iter_donotq.o
>> .libs/iter_fwd.o .libs/iter_hints.o .libs/iter_priv.o
>> .libs/iter_resptype.o .libs/iter_scrub.o .libs/iter_utils.o
>> .libs/localzone.o .libs/mesh.o .libs/modstack.o .libs/view.o
>> .libs/outbound_list.o .libs/alloc.o .libs/config_file.o
>> .libs/configlexer.o .libs/configparser.o .libs/fptr_wlist.o .libs/edns.o
>> .libs/locks.o .libs/log.o .libs/mini_event.o .libs/module.o
>> .libs/net_help.o .libs/random.o .libs/rbtree.o .libs/regional.o
>> .libs/rtt.o .libs/dnstree.o .libs/lookup3.o .libs/lruhash.o
>> .libs/slabhash.o .libs/tcp_conn_limit.o .libs/timehist.o .libs/tube.o
>> .libs/winsock_event.o .libs/autotrust.o .libs/val_anchor.o
>> .libs/validator.o .libs/val_kcache.o .libs/val_kentry.o .libs/val_neg.o
>> .libs/val_nsec3.o .libs/val_nsec.o .libs/val_secalgo.o
>> .libs/val_sigcrypt.o .libs/val_utils.o .libs/dns64.o .libs/cachedb.o
>> .libs/redis.o .libs/authzone.o .libs/respip.o .libs/netevent.o
>> .libs/listen_dnsport.o .libs/outside_network.o .libs/keyraw.o
>> .libs/sbuffer.o .libs/wire2str.o .libs/parse.o .libs/parseutil.o
>> .libs/rrdef.o .libs/str2wire.o .libs/explicit_bzero.o
>> .libs/reallocarray.o .libs/arc4random.o .libs/arc4random_uniform.o
>> .libs/arc4_lock.o .libs/getentropy_solaris.o .libs/strsep.o  
>> -R/usr/local/lib -R/usr/local/lib -R/opt/csw/lib -L/opt/csw/lib/64
>> -L/opt/csw/lib -L/usr/local/lib -lssl /usr/local/lib/libevent.so
>> -lsendfile -lrt -lsocket -lnsl -lcrypto -lmd -lc  -m64 -mt -m64   -mt
>> -pthreads
>> ld: warning: soname option (-h, --soname) appears more than once, first
>> setting taken
>> libtool: link: rm -f .libs/libunbound.so.8.1.3.exp
>> libtool: link: (cd ".libs" && rm -f "libunbound.so.8" && ln -s
>> "libunbound.so.8.1.3" "libunbound.so.8")
>> libtool: link: (cd ".libs" && rm -f "libunbound.so" && ln -s
>> "libunbound.so.8.1.3" "libunbound.so")
>> libtool: link: /opt/csw/gnu/ar cru .libs/libunbound.a  context.o
>> libunbound.o libworker.o ub_event_pluggable.o dns.o infra.o rrset.o
>> dname.o msgencode.o as112.o msgparse.o msgreply.o packed_rrset.o
>> iterator.o iter_delegpt.o iter_donotq.o iter_fwd.o iter_hints.o
>> iter_priv.o iter_resptype.o iter_scrub.o iter_utils.o localzone.o mesh.o
>> modstack.o view.o outbound_list.o alloc.o config_file.o configlexer.o
>> configparser.o fptr_wlist.o edns.o locks.o log.o mini_event.o module.o
>> net_help.o random.o rbtree.o regional.o rtt.o dnstree.o lookup3.o
>> lruhash.o slabhash.o tcp_conn_limit.o timehist.o tube.o winsock_event.o
>> autotrust.o val_anchor.o validator.o val_kcache.o val_kentry.o val_neg.o
>> val_nsec3.o val_nsec.o val_secalgo.o val_sigcrypt.o val_utils.o dns64.o
>> cachedb.o redis.o authzone.o respip.o netevent.o listen_dnsport.o
>> outside_network.o keyraw.o sbuffer.o wire2str.o parse.o parseutil.o
>> rrdef.o str2wire.o explicit_bzero.o reallocarray.o arc4random.o
>> arc4random_uniform.o arc4_lock.o getentropy_solaris.o strsep.o
>> libtool: link: ranlib .libs/libunbound.a
>> libtool: link: ( cd ".libs" && rm -f "libunbound.la" && ln -s
>> "../libunbound.la" "libunbound.la" )
>> ./libtool --tag=CC --mode=link /bin/cc  -R/opt/csw/lib -R/usr/local/lib
>> -I. -I/opt/csw/include -I/opt/csw/include -I/usr/local/include
>> -I/opt/csw/include -DSRCDIR=. -xO4 -m64 -xlinkopt=2 -xc99 -mt -m64
>> -L/opt/csw/lib/64 -xlinkopt=2 -L/opt/csw/lib -L/usr/local/lib
>> -L/opt/csw/lib -o unbound acl_list.lo cachedump.lo daemon.lo shm_main.lo
>> remote.lo stats.lo unbound.lo worker.lo  dns.lo infra.lo rrset.lo
>> dname.lo msgencode.lo as112.lo msgparse.lo msgreply.lo packed_rrset.lo
>> iterator.lo iter_delegpt.lo iter_donotq.lo iter_fwd.lo iter_hints.lo
>> iter_priv.lo iter_resptype.lo iter_scrub.lo iter_utils.lo localzone.lo
>> mesh.lo modstack.lo view.lo outbound_list.lo alloc.lo config_file.lo
>> configlexer.lo configparser.lo fptr_wlist.lo edns.lo locks.lo log.lo
>> mini_event.lo module.lo net_help.lo random.lo rbtree.lo regional.lo
>> rtt.lo dnstree.lo lookup3.lo lruhash.lo slabhash.lo tcp_conn_limit.lo
>> timehist.lo tube.lo winsock_event.lo autotrust.lo val_anchor.lo
>> validator.lo val_kcache.lo val_kentry.lo val_neg.lo val_nsec3.lo
>> val_nsec.lo val_secalgo.lo val_sigcrypt.lo val_utils.lo dns64.lo
>> cachedb.lo redis.lo authzone.lo        respip.lo netevent.lo
>> listen_dnsport.lo outside_network.lo ub_event.lo keyraw.lo sbuffer.lo
>> wire2str.lo parse.lo parseutil.lo rrdef.lo str2wire.lo explicit_bzero.lo
>> reallocarray.lo arc4random.lo arc4random_uniform.lo arc4_lock.lo
>> getentropy_solaris.lo strsep.lo   -lssl -lrt -levent -lrt -lsocket
>> -lnsl  -lcrypto -lmd
>> libtool: link: /bin/cc -I. -I/opt/csw/include -I/opt/csw/include
>> -I/usr/local/include -I/opt/csw/include -DSRCDIR=. -xO4 -m64 -xlinkopt=2
>> -xc99 -mt -m64 -xlinkopt=2 -o unbound .libs/acl_list.o .libs/cachedump.o
>> .libs/daemon.o .libs/shm_main.o .libs/remote.o .libs/stats.o
>> .libs/unbound.o .libs/worker.o .libs/dns.o .libs/infra.o .libs/rrset.o
>> .libs/dname.o .libs/msgencode.o .libs/as112.o .libs/msgparse.o
>> .libs/msgreply.o .libs/packed_rrset.o .libs/iterator.o
>> .libs/iter_delegpt.o .libs/iter_donotq.o .libs/iter_fwd.o
>> .libs/iter_hints.o .libs/iter_priv.o .libs/iter_resptype.o
>> .libs/iter_scrub.o .libs/iter_utils.o .libs/localzone.o .libs/mesh.o
>> .libs/modstack.o .libs/view.o .libs/outbound_list.o .libs/alloc.o
>> .libs/config_file.o .libs/configlexer.o .libs/configparser.o
>> .libs/fptr_wlist.o .libs/edns.o .libs/locks.o .libs/log.o
>> .libs/mini_event.o .libs/module.o .libs/net_help.o .libs/random.o
>> .libs/rbtree.o .libs/regional.o .libs/rtt.o .libs/dnstree.o
>> .libs/lookup3.o .libs/lruhash.o .libs/slabhash.o .libs/tcp_conn_limit.o
>> .libs/timehist.o .libs/tube.o .libs/winsock_event.o .libs/autotrust.o
>> .libs/val_anchor.o .libs/validator.o .libs/val_kcache.o
>> .libs/val_kentry.o .libs/val_neg.o .libs/val_nsec3.o .libs/val_nsec.o
>> .libs/val_secalgo.o .libs/val_sigcrypt.o .libs/val_utils.o .libs/dns64.o
>> .libs/cachedb.o .libs/redis.o .libs/authzone.o .libs/respip.o
>> .libs/netevent.o .libs/listen_dnsport.o .libs/outside_network.o
>> .libs/ub_event.o .libs/keyraw.o .libs/sbuffer.o .libs/wire2str.o
>> .libs/parse.o .libs/parseutil.o .libs/rrdef.o .libs/str2wire.o
>> .libs/explicit_bzero.o .libs/reallocarray.o .libs/arc4random.o
>> .libs/arc4random_uniform.o .libs/arc4_lock.o .libs/getentropy_solaris.o
>> .libs/strsep.o  -L/opt/csw/lib/64 -L/opt/csw/lib -L/usr/local/lib -lssl
>> /usr/local/lib/libevent.so -lsendfile -lrt -lsocket -lnsl -lcrypto -lmd
>> -pthreads -mt  -R/usr/local/lib -R/usr/local/lib -R/opt/csw/lib
>> ld: fatal: soname option (-h, --soname) is incompatible with building a
>> dynamic executable
>> ld: fatal: flags processing errors
>> postopt: error: ld failed to link the binary
>> cc: postopt failed for unbound
>> gmake: *** [Makefile:329: unbound] Error 2
>>
>>> Your configure options look nice.  The "--without-pthreads
>>> --with-solaris-threads" part should be okay, but on the CFLAGS there
>>> seems to be -pthread -mt.  This is weird.  The -pthread should not be
>>> there, I think.  Could you re-run configure, then when it is done edit
>>> the Makefile and remove the -pthread from the Makefile and see if that
>>> compiles?
>>>
>>> From the code, it looks like the -pthread could be from some pkg-config
>>> imported flags, but there does not seem to be an obvious candidate that
>>> is importing flags.  The ax_pthread code, tries to do the -pthread -mt
>>> option, and that could be the culprit - it does not distinguish between
>>> solaris 11 and solaris 10 for the -pthread flag and sunworkshop.   But
>>> you disabled that, in the configure line you pasted.  This is weird. 
>>> And perhaps the way to solve this (if the compile without -pthread
>>> passes, then this debug could be useful) is to look at the configure
>>> output for threading stuff and the config.log, to take a look and see
>>> what is wrong there.
>> Attached compressed config.log
>>> Best regards, Wouter
>>>
>>>
>>>>>>> You could edit the CFLAGS, CPPFLAGS in the Makefile to try different
>>>>>>> options, or enter the commandline by hand ('#' makes comments in the
>>>>>>> Makefile, or copy to a backup file so you can try different changes).
>>>>>>> Try to remove the '-pthread', because there is an 'h' in that and
>>>>>>> solaris has a different threading model (the '-mt' option enables the
>>>>>>> solaris threading I believe).  Maybe the '/usr/local/lib/libevent.so'
>>>>>> Let's take a look on configure options:
>>>>>>
>>>>>> ./configure --prefix=/usr/local
>>>>>> --with-conf-file=/usr/local/etc/unbound/unbound.conf
>>>>>> --with-username=unbound --with-ssl=/opt/csw --with-libevent=/usr/local
>>>>>> --with-libexpat=/opt/csw --without-pthreads --with-solaris-threads
>>>>>> --enable-tfo-client --with-pidfile=/tmp/unbound.pid 'CFLAGS=-xO4 -m64
>>>>>> -xlinkopt=2' 'CPPFLAGS=-I/opt/csw/include' 'LDFLAGS=-m64
>>>>>> -L/opt/csw/lib/64 -xlinkopt=2'
>>>>>>
>>>>>> Solaris support POSIX threads since at least Developer Studio 12.4, If I
>>>>>> remember correct. I've specified explicity use native, however, for
>>>>>> Unbound since 2014.
>>>>>>
>>>>>>> needs to change into '-levent' because citing the .so directly is a gcc
>>>>>>> feature (I thought).  Maybe there are other options that cause issues,
>>>>>>> like warning options or the '-flto' option (disabled with
>>>>>>> --disable-flto
>>>>>>> for configure).
>>>>>> LTO does not supported by SunPro, only -xlinkopt.
>>>>>>> Best regards, Wouter
>>>>>>>
>>>>>>>
>>>>>>>> nsport.o outside_network.o ub_event.o keyraw.o sbuffer.o wire2str.o
>>>>>>>> parse.o parseutil.o rrdef.o str2wire.o explicit_bzero.o reallocarray.o
>>>>>>>> arc4random.o arc4random_uniform.o arc4_lock.o getentropy_solaris.o
>>>>>>>> strsep.o  -L/opt/csw/lib/64 -L/opt/csw/lib -L/usr/local/lib -lssl
>>>>>>>> /usr/local/lib/libevent.so -lsendfile -lrt -lsocket -lnsl -lcrypto
>>>>>>>> -lmd
>>>>>>>> -pthreads -mt -Wl,-rpath -Wl,/usr/local/lib -Wl,-rpath
>>>>>>>> -Wl,/usr/local/lib -Wl,-rpath -Wl,/opt/csw/lib
>>>>>>>> cc: postopt failed for unbound-checkconf
>>>>>>>> gmake: *** [Makefile:335: unbound-control] Error 2
>>>>>>>> gmake: *** [Makefile:332: unbound-checkconf] Error 2
>>>>>>>> ld: fatal: soname option (-h, --soname) is incompatible with
>>>>>>>> building a
>>>>>>>> dynamic executable
>>>>>>>> ld: fatal: flags processing errors
>>>>>>>> postopt: error: ld failed to link the binary
>>>>>>>> cc: postopt failed for unbound
>>>>>>>> gmake: *** [Makefile:329: unbound] Error 2
>>>>>>>>
>>>>>>>> Static library built, but no one executable linked.
>>>>>>>>
>>>>>>>>
>>>>> Yuri
>>>>>
>>>>> From my side I was able to successfully compile Unbound 1.9.3 on
>>>>> Solaris 11.4 SPARC with Studio 12.6, linked to libev 4.24. The output
>>>>> from './unbound -V':
>>>>> --------------------------------------------------------------------------------------
>>>>>
>>>>> Version 1.9.3
>>>>>
>>>>> Configure line: --prefix=/opt/local --libdir=/opt/local/lib/sparcv9
>>>>> --sysconfdir=/etc --with-username=dnsadmin --with-libevent=/opt/local
>>>>> --disable-gost --disable-ecdsa
>>>>> Linked libs: libev 4.24 (it uses not obtainable), OpenSSL 1.0.2q 20
>>>>> Nov 2018
>>>>> Linked modules: dns64 respip validator iterator
>>>>>
>>>>> BSD licensed, see LICENSE in source package for details.
>>>>> Report bugs to unbound-bugs at nlnetlabs.nl or
>>>>> https://github.com/NLnetLabs/unbound/issues
>>>>> --------------------------------------------------------------------------------------
>>>>>
>>>>>
>>>>>
>>>>> And I compiled it with the following settings:
>>>>> --------------------------------------------------------------------------------------
>>>>>
>>>>> CC="/opt/SunStudio/OracleDeveloperStudio12.6-solaris-sparc-bin/developerstudio12.6/bin/cc"
>>>>>
>>>>> CFLAGS="-m64 -xO4 -Qoption cg -xregs=no%appl -W2,-xwrap_int
>>>>> -xmemalign=16s"
>>>>> CPPFLAGS="-I/opt/local/include"
>>>>> LDFLAGS="-L/opt/local/lib/64"
>>>>>
>>>>>
>>>>> ./configure --prefix=/opt/local \
>>>>>         --libdir=/opt/local/lib/sparcv9 \
>>>>>         --sysconfdir=/etc \
>>>>>         --with-username=dnsadmin \
>>>>>         --with-libevent=/opt/local \
>>>>>         --disable-gost --disable-ecdsa
>>>>> --------------------------------------------------------------------------------------
>>>>>
>>>>>
>>>>> According the Studio manpage on cc, the "-mt" is used by default for
>>>>> multithreaded code and the binary then links to
>>>>> '/lib/64/libpthread.so.1'.
>>>> Yes, I know about it. Im using it in my own projects for years. But the
>>>> issue is not -mt, but -soname option.
>>>>
>>>> Just take a look on my configure more closely:
>>>>
>>>> ./configure --prefix=/usr/local
>>>> --with-conf-file=/usr/local/etc/unbound/unbound.conf
>>>> --with-username=unbound --with-ssl=/opt/csw --with-libevent=/usr/local
>>>> --with-libexpat=/opt/csw --without-pthreads --with-solaris-threads
>>>> --enable-tfo-client --with-pidfile=/tmp/unbound.pid 'CFLAGS=-xO4 -m64
>>>> -xlinkopt=2' 'CPPFLAGS=-I/opt/csw/include' 'LDFLAGS=-m64
>>>> -L/opt/csw/lib/64 -xlinkopt=2'
>>>>
>>>> AFAIK, --without-pthreads --with-solaris-threads should set
>>>> thread-related flags correctly, right?
>>>>
>>>>
>>>>> Hope this helps you with your problem.
>>>>>
>>>>> Regards
>>>>>
-- 
"C++ seems like a language suitable for firing other people's legs."

*****************************
* C++20 : Bug to the future *
*****************************


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