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Add support for a custom built dynamic loader #866

Merged
merged 6 commits into from Jul 16, 2014
Merged

Add support for a custom built dynamic loader #866

merged 6 commits into from Jul 16, 2014

Commits on Jul 16, 2014

  1. Add support for a custom built dynamic loader 

    - Add PatchELF utility for patching ELF binaries in post-install
  step.
- Do ELF relocation for bin/$SCRAM_ARCH and test/$SCRAM_ARCH using
  CMS_INSTALL_PREFIX.
- Relocation is only done for slc6_amd64_* (current production
  architecture for CMSSW_7_2_X).

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
    David Abdurachmanov authored and David Abdurachmanov committed Jul 16, 2014
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  2. Add Linux guards; remove LDFLAGS from C compiler 

    Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
    David Abdurachmanov authored and David Abdurachmanov committed Jul 16, 2014
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  3. Add Linux guard macros around glibc in gcc-toolfile 

    Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
    David Abdurachmanov authored and David Abdurachmanov committed Jul 16, 2014
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  4. cmssw-tool-conf: remove duplicate 

    Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
    David Abdurachmanov authored and David Abdurachmanov committed Jul 16, 2014
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  5. Relocate only binaries with a custom glibc 

    - BuildFile must add LDFLAGS rule for a custom dynamic loader
- We only relocate ELF binaries, which were built with a dynamic
  loader from CMSDIST

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
    David Abdurachmanov authored and David Abdurachmanov committed Jul 16, 2014
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  6. Cleanup not needed parts 

    - Drop hard dependency on glibc in gcc-toolfile.spec
- Remove a switch allowing to control post-install relocation.
  Everything is now done based on .interp section content.
  If ELF binary has .interp with $SCRAM_ARCH/external/glibc in
  path we then do post-install relocation on it.

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
    David Abdurachmanov authored and David Abdurachmanov committed Jul 16, 2014
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