Re: CUPS will change license since 2.3 version - now incompatible with GPLv2

Zdenek Dohnal <zdohnal@xxxxxxxxxx> · Tue, 27 Feb 2018 12:43:52 +0100



    Hi Gerald,
    I'll try to explain how I understood it:

    
    On 02/26/2018 03:45 PM, Gerald B. Cox
      wrote:

    
            I must be missing something.... what is sad?  It has
              been stated that CUPS does

            
            not need any GPLv2 only component for building or
              linking.
          
        
    The issue is about packages, which have GPLv2only license and they
    need CUPS libraries for building or linking.

    
              Tom's comment stated:

              
              "Thus, pretty much everyone is in agreement that GPLv3 +
              Apache 2.0 is a
              fine combination. 

              If the combination is GPLv2 or later, then you can
              resolve any concerns about compatibility between GPLv2 and
              

              Apache 2.0 by
              using the GPLv3 license in situations where that work is
              combined with
              an Apache 2.0 work."

              
            and 

              
              "As far as LGPL compatibility goes, because the LGPL
              provides permission
              for anyone to use the LGPL 

              work under the terms of the GPL (section 3 of
              the LGPLv2 and section 2.b of the LGPLv3). LGPLv2 permits
              the 

              terms of
              GPLv2 or GPLv3 (or any future version of GPL) to be
              applied in place of
              the LGPLv2 terms.

               LGPLv3 permits the terms of GPLv3 to be applied in
              place of the LGPLv3 terms.
              

              Thus, LGPLv2 + Apache 2.0 _and_ LGPLv3 + Apache 2.0 are
              considered
              compatible."

              
            So what's the issue?

               
    I think the problem's description lies lower in Tom's email - begins
    "So, that leaves us with GPL version 2 (only) and Apache 2.0. In
    this
    scenario, it is worth noting a few things:"

    -- 
Zdenek Dohnal
Associate Software Engineer
Red Hat Czech - Brno TPB-C

  
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