Para openSUSE Factory execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:VirtualBox_backports/openSUSE_Factory/Virtualization:VirtualBox_backports.repo
zypper refresh
zypper install gsoap
Para openSUSE 12.2 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:VirtualBox_backports/openSUSE_12.2/Virtualization:VirtualBox_backports.repo
zypper refresh
zypper install gsoap
Para openSUSE 12.1 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:VirtualBox_backports/openSUSE_12.1/Virtualization:VirtualBox_backports.repo
zypper refresh
zypper install gsoap
Para openSUSE 11.4 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:VirtualBox_backports/openSUSE_11.4/Virtualization:VirtualBox_backports.repo
zypper refresh
zypper install gsoap