RE: Open source licenses

Dear All,

As I solution, I wanted to start to build Postgres from source by myself, in order to better managed what it is finally
included. 
So I wanted to compile on Windows with Visual Studio.

However, in the page https://www.postgresql.org/docs/current/install-windows.html, I can see:
   " It is recommended that most users download the binary distribution for Windows, available as a graphical installer
packagefrom the PostgreSQL website. Building from source is only intended for people developing PostgreSQL or
extensions." 

Why this recommendation ? Is there any "risk" by building from source ?

Best regards,

Nicolas DAVID
WORKNC DENTAL Project Manager
Manufacturing Intelligence division
Hexagon
E: nicolas.david@hexagon.com
HexagonMI.com

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-----Original Message-----
From: Laurenz Albe <laurenz.albe@cybertec.at>
Sent: 07 April 2021 10:51
To: DAVID Nicolas <nicolas.david@hexagon.com>; Adrian Klaver <adrian.klaver@aklaver.com>; pgsql-general@postgresql.org
Subject: Re: Open source licenses

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On Wed, 2021-04-07 at 06:41 +0000, DAVID Nicolas wrote:
> > > It is to make an inventory of all the used opensource licenses
> > > from all the used components,  to check and respect the terms of use, to preserve copyrights and intellectual
property.
> > >
> > > However, when I get PostgreSql binaries for Windows (Zip archive
> > > linked to [EDB]), I can see in installation-notes.html :
> > >   -> "The software bundled together in this package is released
> > > under a number of different  Open Source licences. By using any
> > > component of this installation package, you agree to abide  by the terms and conditions of it's licence."
> > >
> > > Could the PostgreSQL Global Development Group consider to provide these information ?
> >
> > These installation packages are provided by EnterpriseDB, not by the PGDG.
> >
> > I think your request is reasonable, but you'll have to ask the packager.
>
> Yes sure. I also did it ... without answer.

Not nice.

> But my initial question concerned only the open source components
> linked to the PostgreSQL server that are not under the PostgreSQL license( ex: openssl, libcharset, ...).
> Regarding the other modules added by EDB, I will ask again to EDB.

That depends on how PostgreSQL was configured.

It may be a bit cumbersome, but you could go through all the shared libraries
(DLLs) in the "bin" directory that do not belong to PostgreSQL.  The licenses for software like OpenSSL should be easy
tofind. 

Yours,
Laurenz Albe
--
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