Conflicting thispackage.sh scripts for multiple packages

[rete]

• OS version: ubuntu 18.4
• Compiler version: GCC 8.3.0
• DD4hep version: HEAD (982b654)

What I'm trying to do

I'm developing an event display package based on DD4hep and ROOT Eve7 experimental web event display.

See https://github.com/rete/LCEve

To make it modular I use the plugin mechanism of DD4hep to load LCIO collection converters.
I have successfully:

• Compiled the general library (libLCEve)
• Compiled a DD4hep plugin library (libLCEvePlugins) using the CMake function add_dd4hep_plugin()
• Generated my thislceve.sh using the CMake function dd4hep_instantiate_package( lceve )
• Create an executable LCEventDisplay that is looking for a set of plugins using dd4hep::PluginService::Create()

Important point: I'm using lcgeo to load our standard ILD geometry for the display (ILD_l5_v02).

The issue

To run my event display I execute the following:

source /path/to/lcgeo/bin/thislcgeo.sh
source /path/to/lceve/bin/thislceve.sh
/path/to/lceve/bin/LCEventDisplay [args]

The program fails while loading the geometry:

Compact          INFO  ++ Converted subdetector:Tube of type DD4hep_Beampipe_o1_v01 
Compact          ERROR FAILED     subdetector:QD0_cryostat of type TubeSupport_o1_v01 
PluginService    ERROR Factory requested: TubeSupport_o1_v01 (N10__cxxabiv120__function_type_infoE) :bad any_cast
PluginService    ERROR Stub is invalid!
Compact          ERROR ++ FAILED    to convert subdetector: QD0_cryostat: Failed to execute subdetector creation plugin. 		No factory with name Create(TubeSupport_o1_v01) for type TubeSupport_o1_v01 found.
		Please check library load path and/or plugin factory name.

**************************************************** 
*  A runtime error has occured :                     
*    Failed to execute subdetector creation plugin. 		No factory with name Create(TubeSupport_o1_v01) for type TubeSupport_o1_v01 found.
		Please check library load path and/or plugin factory name.
*  the program will have to be terminated - sorry.   
**************************************************** 

but my plugins from LCEve are found correctly.

It seems that my thislceve.sh hides the environement of lcgeo. As a confirmation, from a new shell, if I switch the file source commands, the geometry is correctly loaded but my plugins are not found.

I looked my environment and found that LD_LIBRARY_PATH in the first case (lcgeo then lceve source) is set to the following:

$ printenv
...
LD_LIBRARY_PATH=/home/ilc/dev/install/lib:/home/ilc/DD4hep/lib::/home/ilc/root/install/lib:/home/ilc/lcgeo/lib:/home/ilc/DD4hep/lib:/home/ilc/python/lib
...

DD4hep library path is set twice. /home/ilc/dev/install/ is the install prefix for LCEve.
Now comes the strange fact: if I remove the last DD4hep library path, i.e:

export LD_LIBRARY_PATH=/home/ilc/dev/install/lib:/home/ilc/root/install/lib:/home/ilc/lcgeo/lib:/home/ilc/DD4hep/lib:/home/ilc/python/lib

then everything works perfectly.

Summary:

• I'm not sure why it is not working so far... Having twice DD4hep library path should not be a problem, but it is for plugins loading.
• Sourcing multiple this{package}.sh scripts from different packages in the same shell somehow leads to conflicts.

[andresailer]

You also dropped the empty path in your second LD_LIBRARY_PATH
This is in the first one:

LD_LIBRARY_PATH=/home/ilc/dev/install/lib:/home/ilc/DD4hep/lib::/home/ilc/root/install/lib:/
                                                              ^^

Does adding or removing that make a difference?

[andresailer]

I think there was a bug in the PluginServiceV2 that stopped the processing of the directories after the two colons. Can you try with #621 ?

[rete]

Thanks Andre. I tried and indeed it solves the problem.
I'll update my docker image after your fix.