bind9-libs not properly linked in focal?

[Timo Aaltonen]

while trying to backport bind-dyndb-ldap for bug 1874568 it failed to build, because the libs aren't properly linked:

configure:9800: checking for isc_dir_open in -lisc
configure:9825: gcc -o conftest -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -fvisibility=hidden -fno-delete-null-pointer-checks -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-Bsymbolic-functions -Wl,-z,relro conftest.c -lisc >&5
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_new_int64'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_new_string'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `deflate'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `deflateInit_'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `xmlTextWriterWriteString'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `deflateEnd'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_object_add'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `xmlTextWriterStartElement'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_new_int'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_array_add'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_new_array'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `xmlTextWriterWriteFormatString'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `xmlTextWriterEndElement'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_new_object'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `xmlTextWriterWriteElement'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libisc.so: undefined reference to `json_object_put'

and ldd shows:

>> ldd /usr/lib/x86_64-linux-gnu/libisc.so.1601
 linux-vdso.so.1 (0x00007ffe97ffa000)
 libcrypto.so.1.1 => /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 (0x00007fd4b6f28000)
 libuv.so.1 => /usr/lib/x86_64-linux-gnu/libuv.so.1 (0x00007fd4b6ef7000)
 libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fd4b6ed4000)
 libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fd4b6ece000)
 libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd4b6cdc000)
 /lib64/ld-linux-x86-64.so.2 (0x00007fd4b7279000)

On groovy we have

 linux-vdso.so.1 (0x00007ffe53b07000)
 libcrypto.so.1.1 => /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1 (0x00007fba86042000)
 libjson-c.so.5 => /usr/lib/x86_64-linux-gnu/libjson-c.so.5 (0x00007fba8602f000)
 libuv.so.1 => /usr/lib/x86_64-linux-gnu/libuv.so.1 (0x00007fba85fff000)
 libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fba85fdd000)
 libxml2.so.2 => /usr/lib/x86_64-linux-gnu/libxml2.so.2 (0x00007fba85e2e000)
 libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fba85e11000)
 libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fba85e09000)
 libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fba85c1f000)
 /lib64/ld-linux-x86-64.so.2 (0x00007fba863b8000)
 libicuuc.so.67 => /usr/lib/x86_64-linux-gnu/libicuuc.so.67 (0x00007fba85a33000)
 liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007fba85a0a000)
 libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fba858bb000)
 libicudata.so.67 => /usr/lib/x86_64-linux-gnu/libicudata.so.67 (0x00007fba83da0000)
 libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fba83bbf000)
 libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fba83ba4000)

[Timo Aaltonen (tjaalton)]

oh well, building a version from Debian which has proper libs fails just as well on focal, so it's not bind9's fault but something else

[Timo Aaltonen (tjaalton)]

The previous comment isn't right, my mistake.

This commit is needed to fix it, included in 9.16.2:

commit 4cc7d2412f63d8878cd8c806752cc2d7b5a580ab
Author: Petr Menšík <email address hidden>
Date: Wed Apr 1 14:28:42 2020 +0200

    Link all required libraries to libisc

    It would fail to link -lisc without additional libraries, which should
    not be required.