Postfix compile error

Figured it out. Needed a couple of -lresolv in the Makefile.in a couple of places.

Hello

I got this problem when compiling postfix 2.8.5 on Ubuntu 11.10

../../lib/libdns.a: error: undefined reference to '__dn_expand'
../../lib/libdns.a: error: undefined reference to '__res_search'

Anyone know how to fix this??

Lars Fisker

 

Got same problem, but don't know howto do "a couple of -lresolv in the Makefile.in a couple of places". Can anyone tell what exactly must be done to fix, please?

 

Re. building error: Postfix VDA 2.9.1

Can anyone with the right knowledge please describe the process of fixing the above problem,

../../lib/libdns.a: undefined reference to `__res_search'
../../lib/libdns.a: undefined reference to `__dn_expand'

that makes the building process with the VDA 2.9.1 patch end in error?
I think it might be useful for many members.

Best regards/Icelake

 

Postfix VDA 2.9.1

make: *** [maildir.o] Error 1
make: Leaving directory `/usr/src/postfix-2.9.1/src/virtual'
make[1]: *** [update] Error 1
make[1]: Leaving directory `/usr/src/postfix-2.9.1'
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2


somebody knows as to solve a problem?

 

Did you use the correct VDA patch for your Postfix version?

Which distribution do you use?

 

Hi, Falko!

On my behalf I tested as you suggested and got the answer:
mail_version = 2.9.1
milter_macro_v = $mail_name $mail_version
so I fetched the patch: postfix-vda-v11-2.9.1.patch with wget as you described in your Howto.

I use Ubuntu 12.04 swedish version.

Rgds/Dagge

 

Not sure if this helps, but you can try to install the package binutils-gold. Then try to build Postfix again.

 

Thanks, Falko!
I erased everething and downloaded the files fresh (just in case).
It didn't work out with the new linker either.
So I just sit on the problem for the moment.
Wonders however...
Is it possible to use the resulting mailserver without the qutoa patch?
Or will it kick back at you, if it not finds the quota information in the database?

Rgds/Dagge

 

Hi Falko!!

When I try to build package got the same error, I´ve been following your how to from this web site. Is it posible use mail server without patch?

I tried with Ubuntu 12.04 LTS (64 bits and 32 bits)

Best Regards!

 

Yes, but quota won't work then.

 

Hi

Ok Falco, I will be following your how to and I´ll be trying to fix this problem.

I have installed binutils-gold getting the same message log.

Thank you very much.

 

German language breaks postfix compilation

I had the same problem with Ubuntu 12.04 and postfix 2.9.3 with vda-patch 2.9.1

Code:

gcc -Wmissing-prototypes -Wformat -DDEBIAN -DMAX_DYNAMIC_MAPS -DHAS_PCRE -DHAS_LDAP -DHAS_SQLITE -DMYORIGIN_FROM_FILE -DNO_NIS -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DHAS_CDB -DHAS_MYSQL -I/usr/include/mysql -DHAS_PGSQL -I/usr/include/postgresql -DHAS_SQLITE -I/usr/include -DHAS_SSL -I/usr/include/openssl -DUSE_SASL_AUTH -I/usr/include/sasl -DUSE_CYRUS_SASL -DUSE_TLS  -O2 -I. -I../../include -DLINUX3 -o smtpd smtpd.o smtpd_token.o smtpd_check.o smtpd_chat.o smtpd_state.o smtpd_peer.o smtpd_sasl_proto.o smtpd_sasl_glue.o smtpd_proxy.o smtpd_xforward.o smtpd_dsn_fix.o smtpd_milter.o smtpd_resolve.o smtpd_expand.o ../../lib/libmaster.a ../../lib/libtls.a ../../lib/libdns.a ../../lib/libxsasl.a ../../lib/libmilter.a ../../lib/libglobal.a ../../lib/libutil.a -lssl -lcrypto -lsasl2 -lpthread -L/usr/src/postfix-2.9.3/debian -ldb
../../lib/libdns.a: undefined reference to `__res_search'
../../lib/libdns.a: undefined reference to `__dn_expand'
collect2: ld gab 1 als Ende-Status zurück
make: *** [smtpd] Fehler 1

The reason of this error: missing -lresolv

I found a problem in Postfix makedefs file. Let's check the source:

Code:

Linux.3*)   SYSTYPE=LINUX3
            if [ -f /usr/include/db.h ]
            then
                : we are all set
            elif [ -f /usr/include/db/db.h ]
            then
                CCARGS="$CCARGS -I/usr/include/db"
            else
                # On a properly installed system, Postfix builds
                # by including <db.h> and by linking with -ldb
                echo "No <db.h> include file found." 1>&2
                echo "Install the appropriate db*-devel package first." 1>&2
                echo "See the RELEASE_NOTES file for more information." 1>&2
                exit 1
            fi
            SYSLIBS="-ldb"
            SEARCHDIRS=$(${CC-gcc} -print-search-dirs 2>/dev/null |
                    sed -n '/^libraries: =/s/libraries: =//p' |
                    sed -e 's/:/\n/g' | xargs -n1 readlink -f |
                    grep -v 'gcc\|/[0-9.]\+$' | sort -u)
            if [ -z "$SEARCHDIRS" ]; then
                    SEARCHDIRS="/usr/lib64 /lib64 /usr/lib /lib /usr/lib/i386-linux-gnu"
            fi
            for name in nsl resolv
            do
                for lib in $SEARCHDIRS
                do
                    test -e $lib/lib$name.a -o -e $lib/lib$name.so && {
                        SYSLIBS="$SYSLIBS -l$name"
                        break
                    }
                done
            done
            ;;

The explanation:

gcc -print-search-dirs | sed -n '/^libraries: =/s/libraries: =//p' didn't work for me, because i have Ubuntu in german language.

The gcc -print-search-dirs output is "Bibliotheken", german word of "libraries".

After changing the sed command the SYSLIBS variable filled in correctly and Postfix compiles fine.