Error when linking agains libdbus

English Open Build Service (OBS)
1

This is my make file:


daemon-ui: main.c
    echo gcc -ggdb `pkg-config --libs dbus-1 --cflags dbus-1` main.c -o daemon-ui
    gcc -ggdb -o daemon-ui `pkg-config --libs dbus-1 --cflags dbus-1` main.c

install:
    cp daemon-ui /usr/local/bin
    cp DaemonUI-session-helper /usr/local/bin
    cp etc.dbus-1.system..d.daemonUI..conf /etc/dbus-1/system.d/daemonUI.conf
    cp usr.share.dbus-1.system-services.pl..art..lach..slawek..apps..DaemonUI..service /usr/share/dbus-1/system-services/pl.art.lach.slawek.apps.DaemonUI.service

This is my spec file:


Name:       DaemonUI
Version:    0.0.1
Release:    0.0.1
Summary:    This package providces UI for system daemon
License:      GPL-3.0-or-later
BuildRequires: cmake
BuildRequires: pkgconfig(dbus-1)
Requires: dbus-1 systemd
URL:        https://sourceforge.net/projects/DaemonUI
Source0:    https://sourceforge.net/projects/DaemonUI/files/Sources/DaemonUI-%{version}.tar.gz

%description
This ststem daemon is designed to allow other daemon asking user for certain thinks. It only stores DBUS ID for of default Bonsole program for given session and share it for root program, which needs it.

%prep
%setup -q

%build
make

%install

mkdir -p %{buildroot}/%{_bindir}
mkdir -p %{buildroot}/%{_prefix}/sbin
mkdir -p %{buildroot}/%{_prefix}/share/dbus-1/system-services/
mkdir -p %{buildroot}/etc/dbus-1/system.d

install -m 0755 DaemonUI-session-helper %{buildroot}/%{_bindir}/
install -m 0755 daemon-ui %{buildroot}/%{_prefix}/sbin/

cp etc.dbus-1.system..d.daemonUI..conf %{buildroot}/etc/dbus-1/system.d/daemonUI.conf
cp  usr.share.dbus-1.system-services.pl..art..lach..slawek..apps..DaemonUI..service %{buildroot}/%{_prefix}/share/dbus-1/system-services/pl.art.lach.slawek.apps.DaemonUI.service


%files
/%{_bindir}/DaemonUI-session-helper
/%{_prefix}/sbin/daemon-ui
/%{_prefix}/share/dbus-1/system-services/pl.art.lach.slawek.apps.DaemonUI.service
/etc/dbus-1/system.d/daemonUI.conf
%dir /*
%dir /%{_prefix}/share/
%dir /etc
%dir /usr
%dir /usr/share
%dir /etc/dbus-1
%dir /etc/dbus-1/system.d
%dir /usr/share/dbus-1
%dir /usr/share/dbus-1/system-services

%changelog
* Mon May 17 2021 Sławomir Lach <slawek@lach.art.pl>
-

This is end of output:


   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /tmp/cc3F8
Jjj.o: in function `get_unix_process_from_id': 
   23s] /home/abuild/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:69: undefined reference to `dbus_e
rror_init' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:71: undefined reference to `dbus_message_new_method_c
all' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:77: undefined reference to `dbus_message_iter_init_ap
pend' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:80: undefined reference to `dbus_message_iter_append_
basic' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:85: undefined reference to `dbus_connection_send_with
_reply' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:90: undefined reference to `dbus_connection_flush' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:91: undefined reference to `dbus_message_unref' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:93: undefined reference to `dbus_pending_call_block' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:94: undefined reference to `dbus_pending_call_steal_r
eply' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:95: undefined reference to `dbus_pending_call_unref' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:97: undefined reference to `dbus_message_get_type' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:101: undefined reference to `dbus_message_get_args' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:114: undefined reference to `dbus_error_init' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:115: undefined reference to `dbus_message_get_args' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:116: undefined reference to `dbus_error_is_set' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /tmp/cc3F8
Jjj.o: in function `send_dbus_reply_string_string': 
   23s] /home/abuild/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:231: undefined reference to `dbus_
message_new_method_return' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:236: undefined reference to `dbus_message_iter_init_a
ppend' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:237: undefined reference to `dbus_message_iter_append
_basic' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:242: undefined reference to `dbus_message_iter_append
_basic' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:247: undefined reference to `dbus_connection_send' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:252: undefined reference to `dbus_connection_flush' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:254: undefined reference to `dbus_message_unref' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /tmp/cc3F8
Jjj.o: in function `connect_with_client': 
   23s] /home/abuild/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:264: undefined reference to `dbus_
message_get_member' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:265: undefined reference to `dbus_message_get_interfa
ce' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:268: undefined reference to `dbus_error_init' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:277: undefined reference to `dbus_message_get_args' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:278: undefined reference to `dbus_message_get_sender' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:301: undefined reference to `dbus_message_get_args' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:318: undefined reference to `dbus_message_get_args' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:336: undefined reference to `dbus_message_get_args' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:342: undefined reference to `dbus_message_get_args' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:349: undefined reference to `dbus_message_new_method_
return' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:360: undefined reference to `dbus_message_iter_init_a
ppend' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:363: undefined reference to `dbus_message_iter_append
_basic' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:368: undefined reference to `dbus_message_iter_append
_basic' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:374: undefined reference to `dbus_connection_send' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:379: undefined reference to `dbus_connection_flush' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:381: undefined reference to `dbus_message_unref' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /tmp/cc3F8
Jjj.o: in function `init': 
   23s] /home/abuild/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:394: undefined reference to `dbus_
error_init' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:395: undefined reference to `dbus_bus_get' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:398: undefined reference to `dbus_error_is_set' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:406: undefined reference to `dbus_error_free' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:410: undefined reference to `dbus_bus_request_name' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:411: undefined reference to `dbus_error_is_set' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:420: undefined reference to `dbus_connection_try_regi
ster_object_path' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:426: undefined reference to `dbus_error_is_set' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:429: undefined reference to `dbus_error_free' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:434: undefined reference to `dbus_message_new_signal' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:443: undefined reference to `dbus_connection_send' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:449: undefined reference to `dbus_connection_flush' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:451: undefined reference to `dbus_message_unref' 
   23s] /usr/lib64/gcc/x86_64-suse-linux/11/../../../../x86_64-suse-linux/bin/ld: /home/abui
ld/rpmbuild/BUILD/DaemonUI-0.0.1/main.c:453: undefined reference to `dbus_connection_read_wri
te_dispatch' 
   23s] collect2: error: ld returned 1 exit status 
   23s] make: *** [Makefile:3: daemon-ui] Error 1 
   23s] error: Bad exit status from /var/tmp/rpm-tmp.E9Oktv (%build) 
   23s]  
   23s]  
   23s] RPM build errors: 
   23s]     Bad exit status from /var/tmp/rpm-tmp.E9Oktv (%build) 
   23s]  
   23s] localhost.localdomain failed "build DaemonUI.spec" at Sat Jul 24 10:48:35 UTC 2021. 
   23s]  

The buildroot was: /var/tmp/build-root/openSUSE_
2

This question has nothing to do with OBS, it is general programming question.

Libraries must be listed on command line after object modules that use them, not before.

3

Thanks. But this build command (gcc) worked, when build normal executable (not for package). Why?

4

I do not know. I have no idea what normal executable is and sourceforge project in your spec file points to something without any downloads (and with different license and different description).

5

Thanks a lot!

Spec file corrected. By wrote normal executable I mean executable created by invocation of make on my shell, not by osc build tool during rpm creation. English is not my native.

6

Hi
You might need to add the --as-needed flag, or add export SUSE_ASNEEDED=0 as the first line after %build in spec file.

7

Actually the problem is caused by --as-needed flag, you probably mean --no-as-needed.

or add export SUSE_ASNEEDED=0 as the first line after %build in spec file.

Yes, on OBS during build

SUSE_ASNEEDED=1

Do you know where this variable is set? openSUSE linker defaults to --no-as-needed for normal binaries which explains why it works outside of OBS. It also is not RPM (building package locally works correctly).

P.S. Thank you for explaining it. ld documentation is rather vague on effect of --as-needed and makes impression it affects only run-time linking. Not to mention completely undocumented magic variable.

P.P.S. it turned out to be OBS specific issue after all :slight_smile: