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BUG #17169: Does PG  involve GPL license?
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* BUG #17169: Does PG  involve GPL license?
@ 2021-08-31 03:32 PG Bug reporting form <noreply@postgresql.org>
  2021-08-31 13:56 ` Re: BUG #17169: Does PG involve GPL license? Tom Lane <tgl@sss.pgh.pa.us>
  0 siblings, 1 reply; 2+ messages in thread

From: PG Bug reporting form @ 2021-08-31 03:32 UTC (permalink / raw)
  To: pgsql-bugs@lists.postgresql.org; +Cc: bchen90@163.com

The following bug has been logged on the website:

Bug reference:      17169
Logged by:          Bo Chen
Email address:      bchen90@163.com
PostgreSQL version: 11.13
Operating system:   euleros v2r7 x86_64
Description:        

Hi, all

    Recently, We planned to use PostgreSQL for owner project, so we
retrieved the license of all PG source code. And the following files which
involve the GPL and perl copyright license. 
   We analyzes the comment of copyright in the file head. For files in
config dir, it seems our using is GPL exceptional. But I can't confirm my
understanding is correct or not?

    Best regards

config
	ax_pthread.m4
	check_decls.m4
	config.guess
	config.sub
	libtool.m4
	pkg.m4



^ permalink  raw  reply  [nested|flat] 2+ messages in thread

* Re: BUG #17169: Does PG involve GPL license?
  2021-08-31 03:32 BUG #17169: Does PG  involve GPL license? PG Bug reporting form <noreply@postgresql.org>
@ 2021-08-31 13:56 ` Tom Lane <tgl@sss.pgh.pa.us>
  0 siblings, 0 replies; 2+ messages in thread

From: Tom Lane @ 2021-08-31 13:56 UTC (permalink / raw)
  To: bchen90@163.com; +Cc: pgsql-bugs@lists.postgresql.org

PG Bug reporting form <noreply@postgresql.org> writes:
>     Recently, We planned to use PostgreSQL for owner project, so we
> retrieved the license of all PG source code. And the following files which
> involve the GPL and perl copyright license. 

> config
> 	ax_pthread.m4
> 	check_decls.m4
> 	config.guess
> 	config.sub
> 	libtool.m4
> 	pkg.m4

Those files come from autoconf (they are part of the source code that
goes into the configure script).  The autoconf manual says, in its
FAQ section:

20.1 Distributing `configure' Scripts
=====================================

     What are the restrictions on distributing `configure'
     scripts that Autoconf generates?  How does that affect my
     programs that use them?

   There are no restrictions on how the configuration scripts that
Autoconf produces may be distributed or used.  In Autoconf version 1,
they were covered by the GNU General Public License.  We still encourage
software authors to distribute their work under terms like those of the
GPL, but doing so is not required to use Autoconf.

   Of the other files that might be used with `configure',
`config.h.in' is under whatever copyright you use for your
`configure.ac'.  `config.sub' and `config.guess' have an exception to
the GPL when they are used with an Autoconf-generated `configure'
script, which permits you to distribute them under the same terms as
the rest of your package.  `install-sh' is from the X Consortium and is
not copyrighted.


			regards, tom lane





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