/lib/libfreenect2.so: undefined reference on Odroid XU3

[oskr1709]

Hello!

I have an Odroid XU3 and I want to use Kinect v2 with it. I´m following the 4 steps of this entry; http://forum.odroid.com/viewtopic.php?f=93&t=12207 but at the end of the "make" step I´m having the next errors:

../lib/libfreenect2.so: undefined reference to 'XRRSetCrtcGamma'
../lib/libfreenect2.so: undefined reference to 'XRRGetOutputInfo'
../lib/libfreenect2.so: undefined reference to 'XcursorImageLoadCursor'
../lib/libfreenect2.so: undefined reference to 'XRRGetScreenResourcesCurrent'
../lib/libfreenect2.so: undefined reference to 'XRRAllocGamma'
../lib/libfreenect2.so: undefined reference to 'XRRQueryVersion'
../lib/libfreenect2.so: undefined reference to 'XRRFreeOutputInfo'
../lib/libfreenect2.so: undefined reference to 'XRRFreeScreenResources'
../lib/libfreenect2.so: undefined reference to 'XRRGetOutputPrimary'
../lib/libfreenect2.so: undefined reference to 'XRRFreeGamma'
../lib/libfreenect2.so: undefined reference to 'XineramaQueryScreens'
../lib/libfreenect2.so: undefined reference to 'XRRQueryExtension'
../lib/libfreenect2.so: undefined reference to 'XineramaIsActive'
../lib/libfreenect2.so: undefined reference to 'XineramaQueryExtension'
../lib/libfreenect2.so: undefined reference to 'XRRGetScreenResources'
../lib/libfreenect2.so: undefined reference to 'XRRGetCrtcGamma'
../lib/libfreenect2.so: undefined reference to 'XISelectEvents'
../lib/libfreenect2.so: undefined reference to 'XRRFreeCrtcInfo'
../lib/libfreenect2.so: undefined reference to 'XRRUpdateConfiguration'
../lib/libfreenect2.so: undefined reference to 'XRRGetCrtcInfo'
../lib/libfreenect2.so: undefined reference to 'XcursorImageCreate'
../lib/libfreenect2.so: undefined reference to 'XIQueryVersion'
../lib/libfreenect2.so: undefined reference to 'XRRSetCrtcConfig'
../lib/libfreenect2.so: undefined reference to 'XcursorImageDestroy'
../lib/libfreenect2.so: undefined reference to 'XRRSelectInput'
../lib/libfreenect2.so: undefined reference to 'XRRGetCrtcGammaSize'

Does anyone know what is the problem?

[floe]

Well, it looks like your installation is missing some Xorg libraries, e.g. libXrandr, libXi, etc. Try installing libxrandr-dev, libxi-dev and so on.

[oskr1709]

Hi floe, thanks for your reply. I tried with sudo apt-get install xorg openbox and with some packages of this link: http://packages.ubuntu.com/trusty/x11/xorg-dev (It seems I already had them) and the same problem

[floe]

Can you post the full build output, e.g. on pastebin? And please use make VERBOSE=1.

[oskr1709]

Floe, this is the build output: http://paste.ubuntu.com/12268944/

[floe]

I'm noticing two weird things:

make[2]: Warning: File `../lib/libfreenect2.so' has modification time 8.4e+07 s in the future
make[2]: Nothing to be done for `CMakeFiles/freenect2shared.dir/build'.
make[2]: warning:  Clock skew detected.  Your build may be incomplete.

Looks like something with your clock is wrong, maybe you're trying to link against an older library version by accident?

And the build command that's actually failing is explicitly using /usr/local/lib as a library source directory. Maybe something weird is installed there, messing up the build?

[oskr1709]

I rebuild it changing with the correct date and time and deleting some old .so files of libglfw in the /usr/local/lib (that I installed before installing libglfw3). Now I don´t have the warnings that you mentioned me but still is the same problem at the end: http://paste.ubuntu.com/12286073/

[floe]

Hm, you could try editing CMakeLists.txt and explicitly adding xrandr to the SET(LIBRARIES ... command. I can't really think of anything else...

[xlz]

Your cmake configured glfw3. This is not expected. glfw is expected. That is, you should have -lglfw instead of -lglfw3 during linking.

The config comes from cat /usr/lib/*/pkgconfig/glfw3.pc, which should give you Libs: -L${libdir} -lglfw. In the binary package there is only libglfw.so.3.x, not libglfw3.so.x. So you must have the wrong libglfw3 package installed.

OK, so there is actually no libglfw3(-dev) packages for Ubuntu armhf installer from install_ubuntu.sh. Can't say we are really supporting ARM platform except Jetson TK1. Maybe you can drive this if you are interested.

I took a look, it seems you should be downloading libglfw3_*_armhf.deb from http://ports.ubuntu.com/ubuntu-ports/pool/universe/g/glfw3/ instead of http://archive.ubuntu.com/ubuntu/...

[oskr1709]

Hi Lingzhu,
i installed libglfw3_3.1.1-1_armhf.deb as you told me but I have this linking error:

[ 88%] Built target freenect2
Scanning dependencies of target freenect2shared
Linking CXX shared library ../lib/libfreenect2.so
/usr/bin/ld: cannot find -lglfw3
collect2: error: ld returned 1 exit status
make[2]: *** [../lib/libfreenect2.so] Error 1
make[1]: *** [CMakeFiles/freenect2shared.dir/all] Error 2
make: *** [all] Error 2

How can I change the linking to -lglfw instead of -libglw3 as you told me?

With cat /usr/lib/*/pkgconfig/glfw3.pc I have Libs: -L${libdir} -lglfw

[xlz]

You need to find out why -lglfw3 is generated. I don't know your systems specifics. Basically it's investigating the configuration of GLFW3 in CMakeLists.txt.

In CMakeLists.txt, GLFW3_LIBRARIES should have glfw not glfw3. Further in, in FindGLFW3.cmake, PKG_CONFIG_FOUND should be true, and running pkg-config --libs glfw3 should return -lglfw not -lglfw3. Otherwise I can't help you.

[oskr1709]

I came back a little bit because I think I know why the building is messed up. I downloaded libglfw3_3.0.4-1_armf.deb and installed it ( sudo dpkg -i libglfw3_3.0.4-1_armf.deb )

When I´m building libfreenect2 I have the next error: fatal error: GLFW/glfw3.h: No such file or directory #include <GLFW/glfw3.h> . I was fixing it using this link: http://stackoverflow.com/questions/17768008/how-to-build-install-glfw-3-and-use-it-in-a-linux-project but I think that because of this I´m getting the undefined references and the other errors. So, is there any other way to fix this problem?

[xlz]

Did you install libglfw3-dev too?

[oskr1709]

I´m not sure when I installed it, but It seems I have it