Technical Team/Minutes/2014-10-28

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October 28, 2014


  • Gary O'Neall
  • Bill Schineller
  • Kate Stewart
  • Mark Gisi
  • Kirsten Newcomer
  • Scott Sterling
  • Jack Manbeck


  • License Expression Language parsing - spanning multiple lines
  • File Tagging follow-up

License Expression Language

Need a way to have license expression language span multiple 4 possible approaches

  • Use parenthesis (like today)
  • Have continuation characters
  • Use begin/end text tags
  • Restrict to single line

Agree to use a parenthesis but only require it around the outside expression. e.g.:

  • LGPL-2.1 is OK since it is only a single license ID
  • (LGPL-2.1 AND APACHE-2.0) is OK
  • LGPL-2.1 AND APACHE-2.0 is NOT OK (needs parenthesis as delimiters)
  • (LGPL-2.1 AND APACHE-2.0 OR APACHE 1.1) is OK (will use the operator precedence to determine expression)

File Tagging in Binaries

  • Bill followed up on Binary inclusion of tags by declaring a string variable
    • Seemed OK, with caveats
      • Compilers may compile it out if the string is not referenced
      • Some may not want it due to the size of the binaries
  • Kate followed up with Ed W.
    • Ed suggested a standardized Macro for C and C++
    • Other considerations regarding linking
  • Agree that the suggestion is valuable, but may not be ready to be put in the spec. proper
  • Separate decisions on including the comments in the source that indicates the license
  • Agree separate document but publish it at the same time and have the separate document refer back to the SPDX dpecification