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Table of Contents
Further documentation
Software related links
- Creating your first XDAQ application (outdated)
Issues with POS
When running XDAQ, one might observe problems on SLC5 when loading shared libraries:
cannot restore segment prot after reloc: Permission denied
Usually SELinux is enabled on SL(C)5 machines and there are 2 cases so far in which one can run into this problem. One needs to disable SELinux by doing as root:
echo 0 > /selinux/enforce
Alternatively, but not working for me, you can get a warning message instead of crash if you set SELINUX=permissive inside
/etc/selinux/config
You might also run into this problem when loading a library compiled on local disk you might get “error: cannot restore segment prot after reloc: Permission denied”. In that case most probably the reason is that either the library or the one which it was linked against need to be rebuild with “-fPIC” option. The SELinux context on AFS does not permit library relocations so sometimes you might hit the problem on local disk but not on AFS or vice versa.
Issues with XDAQ
When running XDAQ on SLC6 64-bit and trying to compile my own package, the following error occured:
/opt/xdaq/include/toolbox/net/UUID.h:18:23: error: uuid/uuid.h: No such file or directory
Could be fixed by installing package: libuuid-devel
