Libpng16.so not found - cannot open a canvas

Hello,

I’ve installed root 6.10.08 on Ubuntu 16.04.3 LTS, in the following way:

 cmake -DCMAKE_INSTALL_PREFIX=/opt/root ..
 make

from the compilation directory, I can use root without any problem, and in particular open a TCanvas.
But after installation to the destination directory:

 make install 
 source /opt/root/bin/thisroot.sh

Opening a canvas leads to the following error:

root [0] TCanvas c
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
Error in <TInterpreter::TCling::AutoLoad>: failure loading library libASImage.so for TASImage
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
Error in <TInterpreter::TCling::AutoLoad>: failure loading library libASImage.so for TASImage
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
Error in <TGHScrollBar::TGHScrollBar>: arrow_*.xpm not found
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
Error in <TInterpreter::TCling::AutoLoad>: failure loading library libASImage.so for TASImage
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
Error in <TInterpreter::TCling::AutoLoad>: failure loading library libASImage.so for TASImage
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
Error in <TGVScrollBar::TGVScrollBar>: arrow_*.xpm not found
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory
Error in <TInterpreter::TCling::AutoLoad>: failure loading library libASImage.so for TASImage
cling::DynamicLibraryManager::loadLibrary(): libpng16.so.16: cannot open shared object file: No such file or directory

 *** Break *** segmentation violation



===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================
#0  0x00007f05e7b9507a in __GI___waitpid (pid=70695, stat_loc=stat_loc
entry=0x7ffc965cad00, options=options
entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
#1  0x00007f05e7b0dfbb in do_system (line=<optimized out>) at ../sysdeps/posix/system.c:148
#2  0x00007f05e8710eed in TUnixSystem::Exec (shellcmd=<optimized out>, this=0xe114f0) at /home/cmsgpu/Software/root-6.10.08/core/unix/src/TUnixSystem.cxx:2118
#3  TUnixSystem::StackTrace (this=0xe114f0) at /home/cmsgpu/Software/root-6.10.08/core/unix/src/TUnixSystem.cxx:2412
#4  0x00007f05e87134dc in TUnixSystem::DispatchSignals (this=0xe114f0, sig=kSigSegmentationViolation) at /home/cmsgpu/Software/root-6.10.08/core/unix/src/TUnixSystem.cxx:3643
#5  <signal handler called>
#6  0x00007f05dc0c7736 in TGHScrollBar::SetPosition (this=0x22b8c90, pos=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGScrollBar.cxx:664
#7  0x00007f05dc09d58b in TGCanvas::Layout (this=0x22b8370) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGCanvas.cxx:2316
#8  0x00007f05dc0cf1d4 in TGCompositeFrame::MapSubwindows (this=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGFrame.cxx:1162
#9  0x00007f05dc0cf1d4 in TGCompositeFrame::MapSubwindows (this=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGFrame.cxx:1162
#10 0x00007f05dc02c875 in TRootCanvas::CreateCanvas (this=this
entry=0x22217c0, name=name
entry=0x16fe4e0 "c1") at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TRootCanvas.cxx:600
#11 0x00007f05dc02d53c in TRootCanvas::TRootCanvas (this=0x22217c0, c=0x7f05e8e7f020, name=0x16fe4e0 "c1", x=10, y=10, width=700, height=500) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TRootCanvas.cxx:321
#12 0x00007f05dc06678e in TRootGuiFactory::CreateCanvasImp (this=<optimized out>, c=0x7f05e8e7f020, title=0x16fe4e0 "c1", x=10, y=10, width=700, height=500) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TRootGuiFactory.cxx:71
#13 0x00007f05de5a4912 in TCanvas::Constructor (this=0x7f05e8e7f020, name=0x16fe4e0 "c1", title=0x16fe4e0 "c1", form=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/graf2d/gpad/src/TCanvas.cxx:306
#14 0x00007f05de5a5550 in TCanvas::TCanvas (this=0x7f05e8e7f020, build=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/graf2d/gpad/src/TCanvas.cxx:155
#15 0x00007f05e8e7e034 in ?? ()
#16 0x00007f05e8e7e010 in ?? ()
#17 0x00007ffc965ce190 in ?? ()
#18 0x0000000000000000 in ?? ()
===========================================================


The lines below might hint at the cause of the crash.
You may get help by asking at the ROOT forum http://root.cern.ch/forum.
Only if you are really convinced it is a bug in ROOT then please submit a
report at http://root.cern.ch/bugs. Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#6  0x00007f05dc0c7736 in TGHScrollBar::SetPosition (this=0x22b8c90, pos=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGScrollBar.cxx:664
#7  0x00007f05dc09d58b in TGCanvas::Layout (this=0x22b8370) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGCanvas.cxx:2316
#8  0x00007f05dc0cf1d4 in TGCompositeFrame::MapSubwindows (this=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGFrame.cxx:1162
#9  0x00007f05dc0cf1d4 in TGCompositeFrame::MapSubwindows (this=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TGFrame.cxx:1162
#10 0x00007f05dc02c875 in TRootCanvas::CreateCanvas (this=this
entry=0x22217c0, name=name
entry=0x16fe4e0 "c1") at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TRootCanvas.cxx:600
#11 0x00007f05dc02d53c in TRootCanvas::TRootCanvas (this=0x22217c0, c=0x7f05e8e7f020, name=0x16fe4e0 "c1", x=10, y=10, width=700, height=500) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TRootCanvas.cxx:321
#12 0x00007f05dc06678e in TRootGuiFactory::CreateCanvasImp (this=<optimized out>, c=0x7f05e8e7f020, title=0x16fe4e0 "c1", x=10, y=10, width=700, height=500) at /home/cmsgpu/Software/root-6.10.08/gui/gui/src/TRootGuiFactory.cxx:71
#13 0x00007f05de5a4912 in TCanvas::Constructor (this=0x7f05e8e7f020, name=0x16fe4e0 "c1", title=0x16fe4e0 "c1", form=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/graf2d/gpad/src/TCanvas.cxx:306
#14 0x00007f05de5a5550 in TCanvas::TCanvas (this=0x7f05e8e7f020, build=<optimized out>) at /home/cmsgpu/Software/root-6.10.08/graf2d/gpad/src/TCanvas.cxx:155
#15 0x00007f05e8e7e034 in ?? ()
#16 0x00007f05e8e7e010 in ?? ()
#17 0x00007ffc965ce190 in ?? ()
#18 0x0000000000000000 in ?? ()
===========================================================

I do not have libpng16 on my system but libpng12.
And anyway, I don’t understand how it can work before installation and fail afterwards.

Any help would be much appreciated, I will be happy to provide more information if needed.

Many thanks,

Colin


Thank you very much for your answer. However, we do need anaconda, and we need to build root with the python version of anaconda, as our analysis is based on root and on many scientific python packages. Would you know of a less drastic solution?

Actually, root compiles and works well with the python version of anaconda.

The problem only occurs after doing make install.

For now, I found a workaround, which is to compile in the /opt directory, and use root from the build directory directly.

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