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We get

cling::DynamicLibraryManager::loadLibrary(): dlopen(/Volumes/HDD2/ec/build/night/LABEL/mac1012/SPEC/noimt/build/lib/libNetxNG.so, 9): Library not loaded: libXrdUtils.2.dylib
  Referenced from: /Volumes/HDD2/ec/build/night/LABEL/mac1012/SPEC/noimt/build/lib/libNetxNG.so
  Reason: unsafe use of relative rpath libXrdUtils.2.dylib in /Volumes/HDD2/ec/build/night/LABEL/mac1012/SPEC/noimt/build/lib/libNetxNG.so with restricted binary
Error in <TInterpreter::TCling::AutoLoad>: failure loading library libNetxNG.so for TNetXNGSystem

on our Mac builds. That's caused by python loading a library (libNetxNG.so from ROOT) which depends on libXrdUtils.2.dylib. otool says:

otool -L lib/libNetxNG.so
lib/libNetxNG.so:
	@rpath/libNetxNG.so (compatibility version 0.0.0, current version 0.0.0)
	libXrdUtils.2.dylib (compatibility version 2.0.0, current version 2.0.0)
	libXrdCl.2.dylib (compatibility version 2.0.0, current version 2.0.0)
	@rpath/libNet.so (compatibility version 0.0.0, current version 0.0.0)
	@rpath/libRIO.so (compatibility version 0.0.0, current version 0.0.0)
	@rpath/libThread.so (compatibility version 0.0.0, current version 0.0.0)
	@rpath/libCore.so (compatibility version 0.0.0, current version 0.0.0)
	/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 400.9.4)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.250.1)

As you can see, the xrootd client libs don't have an RPATH set. I see no way of forcing one upon them; without, binaries in SIP-protected areas (like /usr/bin/python) refuse to load the xrootd client libs.

Could RPATH be allowed as an option, or am I misunderstanding something here?

Cheers, Axel.

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