[mythtv] Compiling on uClibc undefined reference to `getloadavg'

[Andrew Mahone]

On 10/13/05, Christian Jensen <nyzeta at broadpark.no> wrote:
> I'm having a project on my own. Trying to compile mythtv 0.18.1 from gentoo build files.
> I've made a lot of patches witch I will post to those who want them.. But I'm still having trouble with a undefined reference. Here is the error:
>
> /usr/qt/3/bin/moc customrecord.h -o moc_customrecord.cppg++ -c -pipe -march=i586 -include uclibc-hack.h -Wall -W -O3 -Wall -Wno-switch -fomit-frame-pointer -D_REENTRANT  -DMMX -Di386 -DUSING_IVTV -DUSING_XRANDR -DUSING_XVMC -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -DPREFIX=\"/usr\" -DQT_NO_DEBUG -DQT_THREAD_SUPPORT -DQT_SHARED -DQT_TABLET_SUPPORT -I/usr/qt/3/mkspecs/linux-g++ -I. -I../.. -I../../libs/libmythtv -I../../libs -I../../libs/libmyth -I/usr/include -I/usr/qt/3/include -o moc_customrecord.o moc_customrecord.cpp
> g++  -o mythfrontend main.o manualbox.o playbackbox.o viewscheduled.o globalsettings.o manualschedule.o programrecpriority.o channelrecpriority.o statusbox.o previousbox.o customrecord.o moc_manualbox.o moc_playbackbox.o moc_viewscheduled.o moc_manualschedule.o moc_programrecpriority.o moc_channelrecpriority.o moc_statusbox.o moc_previousbox.o moc_customrecord.o   -L/usr/qt/3/lib -L../../libs/libmyth -L../../libs/libmythtv -L../../libs/libavcodec -L../../libs/libavformat -lmythtv-0.18.1 -lmythavformat-0.18.1 -lmythavcodec-0.18.1 -lmyth-0.18.1 -lfreetype -lmp3lame -lasound -L/usr/X11R6/lib -lXinerama -lXv -lXxf86vm -lI810XvMC -lXvMC -lGL -lGLU -lqt-mt -lXext -lX11 -lm -lpthread
> statusbox.o(.text+0x13893): In function `StatusBox::doMachineStatus()':
> : undefined reference to `getloadavg'
> collect2: ld returned 1 exit status
> make[2]: *** [mythfrontend] Error 1
> make[2]: Leaving directory `/var/tmp/portage/mythtv-0.18.1-r1/work/mythtv-0.18.1/programs/mythfrontend'
> make[1]: *** [sub-mythfrontend] Error 2
> make[1]: Leaving directory `/var/tmp/portage/mythtv-0.18.1-r1/work/mythtv-0.18.1/programs'
> make: *** [sub-programs] Error 2
>
> I've tried to do a search on getloadavg but I can't find any..
> Thanks
>
> Christian Jensen

I wrote a uClibc patch for Myth some time ago - much of it will likely
need updating.  Getloadavg was one of many things that Myth expects
that is missing from uClibc.  It's easy enough to write a quick and
dirty getloadavg by reading the data from /proc with scanf, or you can
remove the reference entirely (you'll only lose load average reporting
for that system).

--
Andrew Mahone
andrew DOT mahone AT gmail DOT com