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XROOTD-L  October 2005

XROOTD-L October 2005

Subject:

Re: autotools migration done

From:

Derek Feichtinger <[log in to unmask]>

Date:

12 Oct 2005 16:09:36 +0200Wed, 12 Oct 2005 16:09:36 +0200

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text/plain (221 lines)

Hi, Fabrizio

Actually I'm getting the perl options directly via invoking 
   $PERL -MExtUtils::Embed -e ccopts
in the configure script.

I should test whether the returned information about include paths is indeed 
correct (i.e. parsing out the -Ipath argument and looking for a header file, 
or compile/link a trivial test).

Cheers,
Derek

Excerpt from configure output on my system:
==============================
checking perl libraries and link options... -rdynamic  
-L/usr/local/lib /usr/lib/perl5/5.8.6/i686-linux/auto/DynaLoader/DynaLoader.a 
-L/usr/lib/perl5/5.8.6/i686-linux/CORE -lperl -lpthread -lnsl -ldl -lm 
-lcrypt -lutil -lc

configure: perlembed libraries to link:  
-L/usr/local/lib /usr/lib/perl5/5.8.6/i686-linux/auto/DynaLoader/DynaLoader.a 
-L/usr/lib/perl5/5.8.6/i686-linux/CORE -lperl -lpthread -lnsl -ldl -lm 
-lcrypt -lutil -lc

configure: perlembed link flags:  -rdynamic

configure: perlembed cc options:  -fno-strict-aliasing -pipe 
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64  
-I/usr/lib/perl5/5.8.6/i686-linux/CORE
=============================


On Wednesday 12 October 2005 15.52, Fabrizio Furano wrote:
> Hi,
>
>  it also seem that the configure script does not check for the presence
> of the perl include files.
>
> Fabrizio
>
> On Wed, 2005-10-12 at 09:42 +0200, Derek Feichtinger wrote:
> > Hi, Peter
> >
> > >   Do you have any objection to simply maintaining an updated version
> > > of ./configure in CVS?
> >
> > My experience shows, that this does not work well. It would mean
> > committing all the autotools generated files to CVS (aclocal.m4, all
> > Makefile.in, etc.). Since autotools uses timestamps to trigger rebuilding
> > of its own meta files (e.g. when you edit a Makefile.am, when you change
> > configure.ac,...), the freshly checked out CVS distribution tends to want
> > to rebuild parts because of confused timestamps. This forces you to have
> > a matching version of autotools on your system anyways.
> >
> > I propose that I install a little bootstrap script that runs the
> > libtoolize, aclocal,automake,autoconf commands for convenience. You just
> > loose a few seconds for the bootstrap procedure (but sure. You need to
> > have the autotools installed).
> >
> > Building for a non developer should always be done from a generated
> > tarball (and this is the portable way to do it).
> >
> > There is a maintainer mode option in autotools which prevents rebuilding
> > of the automake generated files, but it makes work more complicated.
> >
> > Cheers,
> > Derek
> >
> > On Tuesday 11 October 2005 19.13, Peter Elmer wrote:
> > >   Hi Derek,
> > >
> > >   Do you have any objection to simply maintaining an updated version
> > > of ./configure in CVS? Although it is not quite as "from source"
> > > as using the autotools to build it from scratch each time one checks
> > > out from CVS, it would simplify things for most developers most of the
> > > time. We just need to make sure it is updated when somebody makes
> > > changes which require it to be updated.
> > >
> > >                                    Pete
> > >
> > > On Tue, Oct 11, 2005 at 11:47:16AM +0200, Derek Feichtinger wrote:
> > > > Ciao, Fabrizio
> > > >
> > > > This is what I mentioned in my first migration mail to the list. You
> > > > need reasonably new versions of the autotools (libtool should be very
> > > > new to correctly produce files which work on Macs).
> > > >
> > > > ------------------------------
> > > >
> > > > > To use the new autotools build:
> > > > > You should install automake > 1.6, autoconf-2.59 and libtool 1.5.18
> > > > > on your system.
> > > >
> > > > -------------------------------
> > > >
> > > > Best you get them as tarballs from the GNU site. They build very fast
> > > > (first get Autoconf, then Automake and then libtool). The Solaris
> > > > machines at SLAC seem to have really ancient versions which have been
> > > > out of use for several years (early versions of Autoconf required a
> > > > configure.in file. Now this has been renamed configure.ac to prevent
> > > > confusion with the files on which configure acts, which are all named
> > > > *.in)
> > > >
> > > > Cheers,
> > > > Derek
> > > >
> > > > On Tuesday 11 October 2005 11.34, you wrote:
> > > > > Hi, thank you.
> > > > >
> > > > > One more question. Is there anything special I have to do to work
> > > > > under Solaris?
> > > > > For instance, aclocal fails on shire02 at slac from a fresh
> > > > > checkout, it says that it needs a configure.in file. From a Linux
> > > > > machine (noric02) instead it works fine.
> > > > >
> > > > > Any hint?
> > > > >
> > > > >
> > > > > Fabrizio
> > > > >
> > > > > Derek Feichtinger wrote:
> > > > > > Hi, Fabrizio
> > > > > >
> > > > > > Take a look at the Makefile.am in the XrdClient directory:
> > > > > >
> > > > > > If you want to recourse into subdirectories, you just add a
> > > > > >
> > > > > > SUBDIRS = dir1 dir2 dir3
> > > > > >
> > > > > > statement.
> > > > > >
> > > > > > Build targets in automake are specified via directives like
> > > > > >
> > > > > > bin_PROGRAMS = myprogram1 myprogram2
> > > > > >
> > > > > > The prefix (bin) defines where the file will be installed, the
> > > > > > type (PROGRAM) defines what kind of targets should be built.
> > > > > >
> > > > > > There is a special prefix "check". This specifies targets that
> > > > > > will never be installed and that get only built when a "make
> > > > > > check" is given. This is specially designed for tests that are
> > > > > > run after the initial build to check the package's sanity.
> > > > > > The variable TESTS hold the name of the tests to be run.
> > > > > >
> > > > > > "Info Automake" should provide you with quite some information as
> > > > > > well as the autobook (chapter 7.7):
> > > > > > http://sources.redhat.com/autobook/autobook/autobook_toc.html
> > > > > >
> > > > > > I can gladly help you to get started if you have specific
> > > > > > questions.
> > > > > >
> > > > > > Cheers,
> > > > > > Derek
> > > > > >
> > > > > > On Tuesday 11 October 2005 10.35, Fabrizio Furano wrote:
> > > > > >>Hi,
> > > > > >>
> > > > > >>  just for the records, is there anything special I have to do if
> > > > > >> I want to add new files/dirs to XrdClient with the new building
> > > > > >> scheme?
> > > > > >>
> > > > > >>  If everything goes well, in the next period I'd like to add
> > > > > >> some modules and a directory containing test programs. How do I
> > > > > >> do that?
> > > > > >>
> > > > > >>Fabrizio
> > > > > >>
> > > > > >>Derek Feichtinger wrote:
> > > > > >>>I forgot:
> > > > > >>>
> > > > > >>>to reduce the current compilation output, type
> > > > > >>>
> > > > > >>>make silent
> > > > > >>>
> > > > > >>>(just filters the compilation lines with sed, stderr still
> > > > > >>> visible). At some point one could introduce a config.h file,
> > > > > >>> which is used to pass all the compile switches determined by
> > > > > >>> configure to the preprocessor, so the awfully long compile
> > > > > >>> lines would get shorter. But this requires adding a include
> > > > > >>> directive to all source files, so I did not want to do it now.
> > > > > >>>
> > > > > >>>To build the test files (e.g. for crypto and mon stuff)
> > > > > >>>
> > > > > >>>make check
> > > > > >>>
> > > > > >>>They will never be installed by make install (the check target
> > > > > >>> is just for compiling and running a package's tests. At some
> > > > > >>> point one could add some active tests to this target).
> > > > > >>>
> > > > > >>>
> > > > > >>>make distcheck
> > > > > >>>
> > > > > >>>this will ensure, that a generated tarball can indeed compile.
> > > > > >>>
> > > > > >>>Cheers,
> > > > > >>>Derek
> > > >
> > > > --
> > > > Dr. Derek Feichtinger                   Tel:   +41 22 767 10 07
> > > > LCG/ARDA Group                            email:
> > > > [log in to unmask] CERN
> > > > http://people.web.psi.ch/feichtinger CH-1211 Genève 23
> > >
> > > -----------------------------------------------------------------------
> > >-- Peter Elmer     E-mail: [log in to unmask]      Phone: +41 (22)
> > > 767-4644 Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23,
> > > Switzerland
> > > -----------------------------------------------------------------------
> > >--

-- 
Dr. Derek Feichtinger                   Tel:   +41 22 767 10 07
LCG/ARDA Group                            email: [log in to unmask]
CERN                                    http://people.web.psi.ch/feichtinger
CH-1211 Genève 23




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