[Privoxy-devel] new windows build system

[Fabian Keil]

Lee <ler762 at gmail.com> wrote:

> On 4/28/16, Fabian Keil <fk at fabiankeil.de> wrote:
> > Lee <ler762 at gmail.com> wrote:
> >  
> >> I've been working on getting Privoxy to build under the current
> >> cygwin, which requires a 'cross-compiler toolchain'.  The autoconf
> >> stuff in privoxy is so old that it doesn't support --host & --build so
> >> how do you feel about replacing config.guess & config.sub with
> >> current/later versions?  What I've been using is
> >>
> >> http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=blob_plain;f=build-aux/config.guess;hb=refs/heads/master
> >>
> >> http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=blob_plain;f=build-aux/config.sub;hb=refs/heads/master  
> >
> > We're currently using the last revisions that were licensed under
> > GPLv2 or later. The current versions are licensed under GPLv3 or
> > later and while there is an exception, it does not apply to Privoxy
> > (according to my interpretation) because we don't ship files generated
> > by autoconf.  
> 
> My understanding is the bit about "it does not include the work's
> System Libraries, or general-purpose tools or generally available free
> programs which are used unmodified" allows using the latest version of
> autoconf and/or individual autoconf files since it's a generally
> available free program that's being used unmodified.  But I'm not a
> lawyer, so my understanding isn't worth beans..
> 
> > Hopefully that's just an oversight.
> >
> > I've contacted the FSF to ask if they can change the wording of the
> > exception so it covers Privoxy as well.  
> 
> I'd be surprised if they changed the wording of the GPL.  I wouldn't
> expect more than an additional FAQ entry to clarify matters.  In any
> case, please let me know their answer.

I didn't request a change of the GPL itself, but a change of the
exception they added for config.sub and config.guess. From the header:

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that
# program.  This Exception is an additional permission under section 7
# of the GNU General Public License, version 3 ("GPLv3").

> >> and replacing AC_CANONICAL_HOST with AC_CANONICAL_SYSTEM in configure.in  
> >
> > Did you try adding AC_CANONICAL_SYSTEM without removing AC_CANONICAL_HOST?  
> 
> I don't remember if I tried it after updating config.guess &
> config.sub or not.  And it turns out I shouldn't be using
> AC_CANONICAL_SYSTEM anyway - see
> https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Obsolete-Macros.html
> 
> *sigh* I need to keep better notes.  What I added was
> AC_CONFIG_HEADER([config.h])
> dnl LR * AC_CANONICAL_HOST
> dnl LR * ac-canonical-host does not set up a compiler toolchain
> dnl LR * as in, it does not support cross-compiling???
> 
> and I don't remember where I got the idea it doesn't set up a compiler
> toolchain.

Does this mean the autoconf goo works as is?

> >> Any suggestions on privoxy-regression-test.pl parameters for testing
> >> this thing?  I'm a bit surprised it even works at all, but it hasn't
> >> crashed yet & old vs. new test results for
> >> privoxy-regression-test.pl --max-level 200  --privoxy-address
> >> 127.0.0.1:8118  
> >
> > The parameters seem reasonable, but I'm not sure I understand the question.  
> 
> I don't have much confidence in software built on guesses & cargo-cult
> programming (which is what I did).  So I'd like to use
> privoxy-regression-test.pl to check as much as I can.  hrmm.. yes, I
> should have said that before asking for suggestions on which
> parameters to use.  Sorry :(

You could additionally use the --forks and --shuffle-tests which
may reveal thread-related issues, but there is no option to
specifically test cross-compiled builds.

Fabian
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