set-focus: relocation error: set-focus: symbol __isoc99_sscanf, version GLIBC_2.7 not defined in file libc.so.6 with link time reference

set-focus.c:
#include <X11/Xlib.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
Display *display;
Window window = 0;
if (argc!=2) {fprintf(stderr, "usage: set-focus <id>\n"); exit(-1);}
if (sscanf(argv[1], "0x%lx", &window)!=1) {
fprintf(stderr, "id must be in parsable by 0x%%lx\n");
exit(-1);
}
display = XOpenDisplay("");
if (display==NULL) {fprintf(stderr, "can't open display\n"); exit(-1);}
// I don't know which is correct:
XSetInputFocus(display, window, RevertToParent, CurrentTime);
//XSetInputFocus(display, window, RevertToPointerRoot, CurrentTime);
//XSetInputFocus(display, window, RevertToNone, CurrentTime);
XFlush(display);
}
). Well, "only" 875 MB to download, and 725 more - as compared to current image size - space will be used...Reading packet list... Bulding dependency tree... Reading state info... Following packets were kept on hold: cpp-4.4 gcc-4.4-base 0 upgraded, 0 new installed, 0 removed i 2 not upgraded. 4 not fully installed or removed. After this operation, additional 0 B disk space will be used. Continue [Y/n]? Y Configuring packet network-manager (0.9.4.0-5) ... dpkg: error processing network-manager (--configure): sub-process installed script post-installation returned error code 1 dpkg: problem with dependencies prohibit configuration of package network-manager-gnome: network-manager-gnome depends on network-manager (>= 0.9.4); hoever: Packet network-manager isn't yet configured. dpkg: error processing network-manager-gnome (--configure): problem with dependencies - leaving not configuredConfiguring packet avahi-daemon (0.6.31-1) ... adduser: User "avahi" already exist. Ending. dpkg: error processing avahi-daemon (--configure): sub-process installed script post-installation returned error code 1 dpkg: problem with dependencies prohibit configuration of package libnss-mdns: libnss-mdns depends on avahi-daemon (>= 0.6.16-1); but: Packet avahi-daemon isn't configured yet. dpkg: error processing libnss-mdns (--configure): problem with dependencies - leaving not configuredErrors occurred during processing: network-manager network-manager-gnomeavahi-daemon libnss-mdns
deluser avahi delgroup avahi
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echo "cpp-4.4 install" | dpkg --set-selecions echo "gcc-4.4-base install" | dpkg --set-selecions
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wmctrl -l | grep -i "some-window-name" | awk '{print $1}
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./var/log/wicd ./var/log/wicd/wicd.log ./var/run/wicd ./var/run/wicd/wicd.pid ./var/lib/update-rc.d/wicd ./var/lib/wicd ./var/lib/menu-xdg/applications/menu-xdg/X-Debian-Applications-Network-Monitoring-wicd.desktop ./var/lib/dpkg/info/python-wicd.md5sums ./var/lib/dpkg/info/wicd-daemon.conffiles ./var/lib/dpkg/info/wicd-gtk.postrm ./var/lib/dpkg/info/wicd-gtk.conffiles ./var/lib/dpkg/info/wicd-gtk.prerm ./var/lib/dpkg/info/wicd-daemon.templates ./var/lib/dpkg/info/wicd-daemon.postrm ./var/lib/dpkg/info/python-wicd.list ./var/lib/dpkg/info/wicd.list ./var/lib/dpkg/info/wicd-daemon.md5sums ./var/lib/dpkg/info/wicd-gtk.postinst ./var/lib/dpkg/info/python-wicd.postinst ./var/lib/dpkg/info/wicd-daemon.postinst ./var/lib/dpkg/info/wicd.md5sums ./var/lib/dpkg/info/wicd-daemon.list ./var/lib/dpkg/info/wicd-gtk.md5sums ./var/lib/dpkg/info/wicd-daemon.config ./var/lib/dpkg/info/python-wicd.prerm ./var/lib/dpkg/info/wicd-daemon.prerm ./var/lib/dpkg/info/wicd-gtk.list ./etc/rc6.d/K20wicd ./etc/rc0.d/K20wicd ./etc/rc4.d/S20wicd ./etc/rc1.d/K20wicd ./etc/xdg/autostart/wicd-tray.desktop.disable ./etc/xdg/autostart/wicd-tray.desktop ./etc/rc3.d/S20wicd ./etc/init.d/wicd ./etc/dbus-1/system.d/wicd.conf ./etc/wicd ./etc/rc2.d/S20wicd ./etc/rc5.d/S20wicd ./etc/default/wicd ./home/user/.wicd ./usr/bin/wicd-client ./usr/bin/wicd-gtk ./usr/share/app-install/desktop/wicd.desktop ./usr/share/app-install/icons/wicd-gtk.png ./usr/share/icons/hicolor/64x64/apps/wicd-gtk.png ./usr/share/icons/hicolor/96x96/apps/wicd-gtk.png ./usr/share/icons/hicolor/128x128/apps/wicd-gtk.png ./usr/share/icons/hicolor/scalable/apps/wicd-gtk.svg ./usr/share/icons/hicolor/48x48/apps/wicd-gtk.png ./usr/share/icons/hicolor/16x16/apps/wicd-gtk.png ./usr/share/icons/hicolor/32x32/apps/wicd-gtk.png ./usr/share/icons/hicolor/22x22/apps/wicd-gtk.png ./usr/share/locale/et/LC_MESSAGES/wicd.mo ./usr/share/locale/he/LC_MESSAGES/wicd.mo ./usr/share/locale/ast/LC_MESSAGES/wicd.mo ./usr/share/locale/el/LC_MESSAGES/wicd.mo ./usr/share/locale/ml/LC_MESSAGES/wicd.mo ./usr/share/locale/en/LC_MESSAGES/wicd.mo ./usr/share/locale/kk/LC_MESSAGES/wicd.mo ./usr/share/locale/eu/LC_MESSAGES/wicd.mo ./usr/share/locale/pt_BR/LC_MESSAGES/wicd.mo ./usr/share/locale/pl/LC_MESSAGES/wicd.mo ./usr/share/locale/it/LC_MESSAGES/wicd.mo ./usr/share/locale/gl/LC_MESSAGES/wicd.mo ./usr/share/locale/hu/LC_MESSAGES/wicd.mo ./usr/share/locale/uk/LC_MESSAGES/wicd.mo ./usr/share/locale/zh_CN/LC_MESSAGES/wicd.mo ./usr/share/locale/vi/LC_MESSAGES/wicd.mo ./usr/share/locale/sr/LC_MESSAGES/wicd.mo ./usr/share/locale/tr/LC_MESSAGES/wicd.mo ./usr/share/locale/nl/LC_MESSAGES/wicd.mo ./usr/share/locale/sk/LC_MESSAGES/wicd.mo ./usr/share/locale/pt/LC_MESSAGES/wicd.mo ./usr/share/locale/eo/LC_MESSAGES/wicd.mo ./usr/share/locale/cs/LC_MESSAGES/wicd.mo ./usr/share/locale/zh_TW/LC_MESSAGES/wicd.mo ./usr/share/locale/ka/LC_MESSAGES/wicd.mo ./usr/share/locale/ko/LC_MESSAGES/wicd.mo ./usr/share/locale/ja/LC_MESSAGES/wicd.mo ./usr/share/locale/nn/LC_MESSAGES/wicd.mo ./usr/share/locale/fi/LC_MESSAGES/wicd.mo ./usr/share/locale/sv/LC_MESSAGES/wicd.mo ./usr/share/locale/fr/LC_MESSAGES/wicd.mo ./usr/share/locale/ru/LC_MESSAGES/wicd.mo ./usr/share/locale/ar_EG/LC_MESSAGES/wicd.mo ./usr/share/locale/nb/LC_MESSAGES/wicd.mo ./usr/share/locale/hr/LC_MESSAGES/wicd.mo ./usr/share/locale/sl/LC_MESSAGES/wicd.mo ./usr/share/locale/lt/LC_MESSAGES/wicd.mo ./usr/share/locale/id/LC_MESSAGES/wicd.mo ./usr/share/locale/zh_HK/LC_MESSAGES/wicd.mo ./usr/share/locale/ro/LC_MESSAGES/wicd.mo ./usr/share/locale/da/LC_MESSAGES/wicd.mo ./usr/share/locale/lv/LC_MESSAGES/wicd.mo ./usr/share/locale/es/LC_MESSAGES/wicd.mo ./usr/share/locale/fa/LC_MESSAGES/wicd.mo ./usr/share/locale/te/LC_MESSAGES/wicd.mo ./usr/share/locale/de/LC_MESSAGES/wicd.mo ./usr/share/locale/bg/LC_MESSAGES/wicd.mo ./usr/share/locale/ca/LC_MESSAGES/wicd.mo ./usr/share/applications/wicd.desktop ./usr/share/menu/wicd-gtk ./usr/share/pixmaps/wicd-gtk.xpm ./usr/share/pixmaps/wicd ./usr/share/doc/wicd-daemon ./usr/share/doc/wicd-gtk ./usr/share/doc/python-wicd ./usr/share/doc/wicd ./usr/share/pyshared/wicd-1.7.2.4.egg-info ./usr/share/pyshared/wicd ./usr/share/man/man5/wicd-wireless-settings.conf.5.gz ./usr/share/man/man5/wicd-manager-settings.conf.5.gz ./usr/share/man/man5/wicd-wired-settings.conf.5.gz ./usr/share/man/nl/man5/wicd-wireless-settings.conf.5.gz ./usr/share/man/nl/man5/wicd-manager-settings.conf.5.gz ./usr/share/man/nl/man5/wicd-wired-settings.conf.5.gz ./usr/share/man/nl/man8/wicd.8.gz ./usr/share/man/nl/man1/wicd-client.1.gz ./usr/share/man/nl/man1/wicd-gtk.1.gz ./usr/share/man/man8/wicd.8.gz ./usr/share/man/man1/wicd-client.1.gz ./usr/share/man/man1/wicd-gtk.1.gz ./usr/share/python/runtime.d/wicd-daemon.rtupdate ./usr/share/python/runtime.d/wicd-gtk.rtupdate ./usr/share/wicd ./usr/share/wicd/gtk/wicd-client.pyc ./usr/share/wicd/gtk/wicd.ui ./usr/share/wicd/gtk/wicd-client.py ./usr/share/wicd/daemon/wicd-daemon.pyc ./usr/share/wicd/daemon/wicd-daemon.py ./usr/share/bug/wicd-daemon ./usr/share/bug/wicd-gtk ./usr/share/bug/python-wicd ./usr/share/bug/wicd ./usr/sbin/wicd ./usr/lib/pm-utils/sleep.d/55wicd ./usr/lib/python2.6/dist-packages/wicd-1.7.2.4.egg-info ./usr/lib/python2.6/dist-packages/wicd ./usr/lib/python2.7/dist-packages/wicd-1.7.2.4.egg-info ./usr/lib/python2.7/dist-packages/wicd
