[12gevmoller_sim] [JeffersonLab/remoll] ee9530: Travis fix: HEPMC_LIBRARIES undefined

[GitHub]

  Branch: refs/heads/feature-evgen-hepmc
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  Commit: ee95308a7fe18af4b3012f9f0fb511d6b73bd3bc
      https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll_commit_ee95308a7fe18af4b3012f9f0fb511d6b73bd3bc&d=DwICaQ&c=lz9TcOasaINaaC3U7FbMev2lsutwpI4--09aP8Lu18s&r=3B3cpV8BW_CcRY44e0IgDNmqzlTXeeJsbWtRdt_HYCM&m=pE_nbnO72Kk-k7NG7COGdazoh9Xh-QIquKiBWYphar4&s=T-XCrFwPMKen_SGDYeU8idUPXhq-mpl7W0RASVI5f3A&e= 
  Author: Wouter Deconinck <wdconinc at gmail.com>
  Date:   2018-07-05 (Thu, 05 Jul 2018)

  Changed paths:
    M CMakeLists.txt

  Log Message:
  -----------
  Travis fix: HEPMC_LIBRARIES undefined



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