I have been trying to build workrave on RHEL 6. I have updated all my X packages and my configure runs smoothly but I get this during the make process:

/apps1/workrave_source/workrave-1.10/backend/src/.libs/libworkrave-backend.a(libworkrave_backend_unix_la-XScreenSaverMonitor.o): In function `XScreenSaverMonitor::run()':
/apps1/workrave_source/workrave-1.10/backend/src/unix/XScreenSaverMonitor.cc:106: undefined reference to `XScreenSaverQueryInfo'
/apps1/workrave_source/workrave-1.10/backend/src/.libs/libworkrave-backend.a(libworkrave_backend_unix_la-XScreenSaverMonitor.o): In function `XScreenSaverMonitor::init()':
/apps1/workrave_source/workrave-1.10/backend/src/unix/XScreenSaverMonitor.cc:70: undefined reference to `XScreenSaverQueryExtension'
/apps1/workrave_source/workrave-1.10/backend/src/unix/XScreenSaverMonitor.cc:74: undefined reference to `XScreenSaverAllocInfo'
collect2: ld returned 1 exit status
make[6]: *** [workrave] Error 1
make[6]: Leaving directory `/apps1/workrave_source/workrave-1.10/frontend/gtkmm/src'
make[5]: *** [all-recursive] Error 1
make[5]: Leaving directory `/apps1/workrave_source/workrave-1.10/frontend/gtkmm/src'
make[4]: *** [all] Error 2
make[4]: Leaving directory `/apps1/workrave_source/workrave-1.10/frontend/gtkmm/src'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/apps1/workrave_source/workrave-1.10/frontend/gtkmm'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/apps1/workrave_source/workrave-1.10/frontend'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/apps1/workrave_source/workrave-1.10'
make: *** [all] Error 2

I rebuilt several of the X libraries and verified my LD_LIBRARY_PATH, PKG_CONFIG_PATH, and even changed their order...I'm stumped...Help??

Please check if libXScrnSaver-devel is installed (this is how the package is called on fedora)

(In reply to ro**@kr**.org from comment #1)
> Please check if libXScrnSaver-devel is installed (this is how the package is
> called on fedora)

Ever have one of those days where you didn't get enough caffeine in your system to function properly....

That did the trick...many thanks!!!

No problem. I will leave this bug open. Workrave's configure script should complain when the library is not available.

I got the error `undefined reference to `XScreenSaverQueryExtension'` when compiling `frontend/gtkmm/src`

> make
...
make[6]: Entering directory '/media/data/develop/c/workrave/frontend/gtkmm/src'
/bin/sh ../../../libtool  --tag=CXX   --mode=link g++ -std=c++11 -DWORKRAVE_PKGDATADIR="\"/usr/local/share/workrave\"" -W -DWORKRAVE_DATADIR="\"/usr/local/share\"" -I../../../frontend/gtkmm/src/ -I../../../common/include -I../../../backend/include -I../../../frontend/common/include -std=c++11 -pthread -I/usr/include/gtkmm-3.0 -I/usr/lib64/gtkmm-3.0/include -I/usr/include/atkmm-1.6 -I/usr/include/gtk-3.0/unix-print -I/usr/include/gdkmm-3.0 -I/usr/lib64/gdkmm-3.0/include -I/usr/include/giomm-2.4 -I/usr/lib64/giomm-2.4/include -I/usr/include/pangomm-1.4 -I/usr/lib64/pangomm-1.4/include -I/usr/include/glibmm-2.4 -I/usr/lib64/glibmm-2.4/include -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib64/dbus-1.0/include -I/usr/include/gtk-3.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/pkg/libxkbcommon -I/usr/include/wayland -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/cairomm-1.0 -I/usr/lib64/cairomm-1.0/include -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libdrm -I/usr/include/libpng16 -I/usr/include/sigc++-2.0 -I/usr/lib64/sigc++-2.0/include -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -pthread -I/usr/include/gconf/2 -I/usr/include/dbus-1.0 -I/usr/lib64/dbus-1.0/include -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -D_XOPEN_SOURCE=600     -I../../../frontend/gtkmm/src/unix/ -DEGG_SM_CLIENT_BACKEND_XSMP   -I../../../frontend/plugin/distribution/gtkmm/src -I../../../frontend/plugin/statistics/gtkmm/src -I../../../frontend/plugin/exercises/gtkmm/src -I../../../frontend/plugin/exercises/common/src -g -O2 -L../../../common/src/ -L../../../backend/src/ -L../../../frontend/common/src -L../../../frontend/gtkmm/src/unix/   -o workrave workrave-AppletControl.o workrave-AppletWindow.o workrave-BreakWindow.o workrave-DailyLimitWindow.o workrave-DataConnector.o workrave-EventButton.o workrave-EventImage.o workrave-EventLabel.o workrave-Frame.o workrave-GUI.o workrave-GUIConfig.o workrave-GtkUtil.o workrave-HeadInfo.o workrave-Hig.o workrave-IconListCellRenderer.o workrave-IconListNotebook.o workrave-MainGtkMenu.o workrave-MainWindow.o workrave-Menus.o workrave-MicroBreakWindow.o workrave-PreferencesDialog.o workrave-PreludeWindow.o workrave-RestBreakWindow.o workrave-Session.o workrave-StatusIcon.o workrave-TimeBar.o workrave-TimeEntry.o workrave-TimerBoxGtkView.o workrave-TimerBoxPreferencePage.o workrave-TimerPreferencesPanel.o workrave-WindowHints.o workrave-eggsmclient.o workrave-main.o   workrave-X11SystrayAppletWindow.o workrave-gtktrayicon3.o workrave-eggdesktopfile.o workrave-eggsmclient-xsmp.o  ../../plugin/distribution/gtkmm/src/workrave-NetworkJoinDialog.o ../../plugin/distribution/gtkmm/src/workrave-NetworkLogDialog.o ../../plugin/distribution/gtkmm/src/workrave-NetworkPreferencePage.o ../../plugin/exercises/gtkmm/src/workrave-ExercisesDialog.o ../../plugin/exercises/gtkmm/src/workrave-ExercisesPanel.o ../../plugin/exercises/common/src/workrave-Exercise.o ../../plugin/statistics/gtkmm/src/workrave-StatisticsDialog.o  workrave-DBusGUI.o workrave-GenericDBusApplet.o  -lworkrave-backend -lworkrave-frontend-common -lworkrave-common  -lXtst -lSM -lICE -Wl,--export-dynamic -lgmodule-2.0 -pthread -lgthread-2.0 -pthread -lglib-2.0 -lgtkmm-3.0 -latkmm-1.6 -lgdkmm-3.0 -lgiomm-2.4 -lpangomm-1.4 -lglibmm-2.4 -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo-gobject -lgio-2.0 -lcairomm-1.0 -lcairo -lsigc-2.0 -lgdk_pixbuf-2.0 -lgobject-2.0 -lglib-2.0   -lXtst -lgconf-2 -lglib-2.0 -lpulse-mainloop-glib -lpulse -lglib-2.0 -lworkrave-frontend-gtkmm-unix -lX11  -lgtkmm-3.0 -latkmm-1.6 -lgdkmm-3.0 -lgiomm-2.4 -lpangomm-1.4 -lglibmm-2.4 -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo-gobject -lgio-2.0 -lcairomm-1.0 -lcairo -lsigc-2.0 -lgdk_pixbuf-2.0 -lgobject-2.0 -lglib-2.0     
libtool: link: g++ -std=c++11 -DWORKRAVE_PKGDATADIR=\"/usr/local/share/workrave\" -W -DWORKRAVE_DATADIR=\"/usr/local/share\" -I../../../frontend/gtkmm/src/ -I../../../common/include -I../../../backend/include -I../../../frontend/common/include -std=c++11 -pthread -I/usr/include/gtkmm-3.0 -I/usr/lib64/gtkmm-3.0/include -I/usr/include/atkmm-1.6 -I/usr/include/gtk-3.0/unix-print -I/usr/include/gdkmm-3.0 -I/usr/lib64/gdkmm-3.0/include -I/usr/include/giomm-2.4 -I/usr/lib64/giomm-2.4/include -I/usr/include/pangomm-1.4 -I/usr/lib64/pangomm-1.4/include -I/usr/include/glibmm-2.4 -I/usr/lib64/glibmm-2.4/include -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib64/dbus-1.0/include -I/usr/include/gtk-3.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/pkg/libxkbcommon -I/usr/include/wayland -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/cairomm-1.0 -I/usr/lib64/cairomm-1.0/include -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libdrm -I/usr/include/libpng16 -I/usr/include/sigc++-2.0 -I/usr/lib64/sigc++-2.0/include -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -pthread -I/usr/include/gconf/2 -I/usr/include/dbus-1.0 -I/usr/lib64/dbus-1.0/include -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -D_XOPEN_SOURCE=600 -I../../../frontend/gtkmm/src/unix/ -DEGG_SM_CLIENT_BACKEND_XSMP -I../../../frontend/plugin/distribution/gtkmm/src -I../../../frontend/plugin/statistics/gtkmm/src -I../../../frontend/plugin/exercises/gtkmm/src -I../../../frontend/plugin/exercises/common/src -g -O2 -o workrave workrave-AppletControl.o workrave-AppletWindow.o workrave-BreakWindow.o workrave-DailyLimitWindow.o workrave-DataConnector.o workrave-EventButton.o workrave-EventImage.o workrave-EventLabel.o workrave-Frame.o workrave-GUI.o workrave-GUIConfig.o workrave-GtkUtil.o workrave-HeadInfo.o workrave-Hig.o workrave-IconListCellRenderer.o workrave-IconListNotebook.o workrave-MainGtkMenu.o workrave-MainWindow.o workrave-Menus.o workrave-MicroBreakWindow.o workrave-PreferencesDialog.o workrave-PreludeWindow.o workrave-RestBreakWindow.o workrave-Session.o workrave-StatusIcon.o workrave-TimeBar.o workrave-TimeEntry.o workrave-TimerBoxGtkView.o workrave-TimerBoxPreferencePage.o workrave-TimerPreferencesPanel.o workrave-WindowHints.o workrave-eggsmclient.o workrave-main.o workrave-X11SystrayAppletWindow.o workrave-gtktrayicon3.o workrave-eggdesktopfile.o workrave-eggsmclient-xsmp.o ../../plugin/distribution/gtkmm/src/workrave-NetworkJoinDialog.o ../../plugin/distribution/gtkmm/src/workrave-NetworkLogDialog.o ../../plugin/distribution/gtkmm/src/workrave-NetworkPreferencePage.o ../../plugin/exercises/gtkmm/src/workrave-ExercisesDialog.o ../../plugin/exercises/gtkmm/src/workrave-ExercisesPanel.o ../../plugin/exercises/common/src/workrave-Exercise.o ../../plugin/statistics/gtkmm/src/workrave-StatisticsDialog.o workrave-DBusGUI.o workrave-GenericDBusApplet.o -Wl,--export-dynamic -pthread -pthread  -L../../../common/src/ -L../../../backend/src/ -L../../../frontend/common/src -L../../../frontend/gtkmm/src/unix/ /home/dec/develop/c/workrave/backend/src/.libs/libworkrave-backend.a /home/dec/develop/c/workrave/frontend/common/src/.libs/libworkrave-frontend-common.a /home/dec/develop/c/workrave/common/src/.libs/libworkrave-common.a -lSM -lICE -lgmodule-2.0 -lgthread-2.0 -lXtst -lgconf-2 -lpulse-mainloop-glib -lpulse -lworkrave-frontend-gtkmm-unix -lX11 -lgtkmm-3.0 -latkmm-1.6 -lgdkmm-3.0 -lgiomm-2.4 -lpangomm-1.4 -lglibmm-2.4 -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo-gobject -lgio-2.0 -lcairomm-1.0 -lcairo -lsigc-2.0 -lgdk_pixbuf-2.0 -lgobject-2.0 -lglib-2.0 -pthread
/home/dec/develop/c/workrave/backend/src/.libs/libworkrave-backend.a(libworkrave_backend_unix_la-XScreenSaverMonitor.o): In function `XScreenSaverMonitor::init()':
/home/dec/develop/c/workrave/backend/src/unix/XScreenSaverMonitor.cc:72: undefined reference to `XScreenSaverQueryExtension'
/home/dec/develop/c/workrave/backend/src/unix/XScreenSaverMonitor.cc:76: undefined reference to `XScreenSaverAllocInfo'
/home/dec/develop/c/workrave/backend/src/.libs/libworkrave-backend.a(libworkrave_backend_unix_la-XScreenSaverMonitor.o): In function `XScreenSaverMonitor::run()':
/home/dec/develop/c/workrave/backend/src/unix/XScreenSaverMonitor.cc:108: undefined reference to `XScreenSaverQueryInfo'
collect2: error: ld returned 1 exit status
Makefile:936: recipe for target 'workrave' failed
make[6]: *** [workrave] Error 1
make[6]: Leaving directory '/media/data/develop/c/workrave/frontend/gtkmm/src'
Makefile:1884: recipe for target 'all-recursive' failed
make[5]: *** [all-recursive] Error 1
make[5]: Leaving directory '/media/data/develop/c/workrave/frontend/gtkmm/src'
Makefile:805: recipe for target 'all' failed
make[4]: *** [all] Error 2
make[4]: Leaving directory '/media/data/develop/c/workrave/frontend/gtkmm/src'
Makefile:480: recipe for target 'all-recursive' failed
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory '/media/data/develop/c/workrave/frontend/gtkmm'
Makefile:480: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory '/media/data/develop/c/workrave/frontend'
Makefile:610: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/media/data/develop/c/workrave'
Makefile:512: recipe for target 'all' failed
make: *** [all] Error 2

The header with the definitions exists:
> grep XScreenSaverQueryInfo /usr/include/X11/extensions/* -ir
/usr/include/X11/extensions/saverproto.h:} xScreenSaverQueryInfoReq;
/usr/include/X11/extensions/saverproto.h:#define sz_xScreenSaverQueryInfoReq	8
/usr/include/X11/extensions/saverproto.h:} xScreenSaverQueryInfoReply;
/usr/include/X11/extensions/saverproto.h:#define sz_xScreenSaverQueryInfoReply	32
/usr/include/X11/extensions/scrnsaver.h:extern Status XScreenSaverQueryInfo (

Doing the latter `g++` run (which is failing) again with the option `-lXss` succeeds.
Tough I was able to figure out, which option was missing, I'm unsure if this is the right way to fix this error. (And if yes, where to add it in the Makefile)
As a temporary fix I added `./configure LIBS=-lXss` to my build process.