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Why can't I compile this version of Postfix?

rated 0 times [ 0] [ 0] / answers: 1 / hits: 2161 / 3 Years ago, mon, september 27, 2021, 4:07:31

I just installed postfix 2.7.11 in Ubuntu server from source code. I do not use the ubuntu own one because I need the old version.

I found a very interesting problem. Before, in both CentOS 5 and 6, I can build the source code without any problem. But, in Ubuntu server 12.04 is totally different.

I got the following problems:

dict_nis.c:173: error: undefined reference to 'yp_match'

dict_nis.c:187: error: undefined reference to 'yp_match'



dns_lookup.c:347: error: undefined reference to '__dn_expand'

dns_lookup.c:218: error: undefined reference to '__res_search'

dns_lookup.c:287: error: undefined reference to '__dn_expand'

dns_lookup.c:498: error: undefined reference to '__dn_expand'

dns_lookup.c:383: error: undefined reference to '__dn_expand'

Yes, this reason is obviously. I just search related library and add it to the makefile. It works.

The question is why? What is the difference between Ubuntu Server and CentOS?

One possibility is gcc and ld version. Ubuntu server use different version of gcc and ld with CentOS. But I am not sure.

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sconhoney

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answered 3 Years ago uestred · Accepted Answer

Finally, with others help. I found the reason.

Ubuntu have special .so location. The location is different from CentOS.

But in Postfix makedefs file, it do not include this specific location. Let's check the source:

SYSLIBS="-ldb"

        for name in nsl resolv

        do

            for lib in /usr/lib64 /lib64 /usr/lib /lib

            do

            test -e $lib/lib$name.a -o -e $lib/lib$name.so && {

                SYSLIBS="$SYSLIBS -l$name"

                break

            }

            done

        done

Here, SYSLIBS will be used when do make. This script will check some special folder to add .so lib. But these locations do not include Ubuntu's.