davide@cermis:~$ objdump -x /opt/easybuild/software/MPI/GCC/7.3.0-2.30/OpenMPI/3.1.1/Mesa/18.1.1/lib/libGL.so.1 | grep libunwind
  NEEDED               libunwind.so.8

$ objdump -x $EBROOTMESA/lib/libGL.so.1 | grep NEEDED
  NEEDED               libz.so.1
  NEEDED               libglapi.so.0
  NEEDED               libXext.so.6
  NEEDED               libX11.so.6
  NEEDED               libxcb.so.1
  NEEDED               libXau.so.6
  NEEDED               libXdmcp.so.6
  NEEDED               libdl.so.2
  NEEDED               libLLVMX86Disassembler.so.6
  NEEDED               libLLVMX86AsmParser.so.6
  NEEDED               libLLVMX86CodeGen.so.6
  NEEDED               libLLVMGlobalISel.so.6
  NEEDED               libLLVMSelectionDAG.so.6
  NEEDED               libLLVMAsmPrinter.so.6
  NEEDED               libLLVMDebugInfoCodeView.so.6
  NEEDED               libLLVMDebugInfoMSF.so.6
  NEEDED               libLLVMCodeGen.so.6
  NEEDED               libLLVMScalarOpts.so.6
  NEEDED               libLLVMInstCombine.so.6
  NEEDED               libLLVMTransformUtils.so.6
  NEEDED               libLLVMX86Desc.so.6
  NEEDED               libLLVMMCDisassembler.so.6
  NEEDED               libLLVMX86Info.so.6
  NEEDED               libLLVMX86AsmPrinter.so.6
  NEEDED               libLLVMX86Utils.so.6
  NEEDED               libLLVMMCJIT.so.6
  NEEDED               libLLVMExecutionEngine.so.6
  NEEDED               libLLVMTarget.so.6
  NEEDED               libLLVMRuntimeDyld.so.6
  NEEDED               libLLVMBitWriter.so.6
  NEEDED               libLLVMAnalysis.so.6
  NEEDED               libLLVMProfileData.so.6
  NEEDED               libLLVMObject.so.6
  NEEDED               libLLVMMCParser.so.6
  NEEDED               libLLVMMC.so.6
  NEEDED               libLLVMBitReader.so.6
  NEEDED               libLLVMCore.so.6
  NEEDED               libLLVMBinaryFormat.so.6
  NEEDED               libLLVMSupport.so.6
  NEEDED               libLLVMDemangle.so.6
  NEEDED               libpthread.so.0
  NEEDED               libstdc++.so.6
  NEEDED               libm.so.6
  NEEDED               libc.so.6
  NEEDED               ld-linux-x86-64.so.2
  NEEDED               libgcc_s.so.1
$
$ objdump -x $EBROOTMESA/lib/libGL.so.1 | grep NEEDED | grep libunwind
$